Multiquip Saw HS81A User Manual

OPERATION AND PARTS MANUAL  
SideWinder  
MODEL HS81A  
CUT-OFF SAW  
Revision #2 (07/26/10)  
To find the latest revision of this  
publication, visit our website at:  
THIS MANUAL MUST ACCOMPANYTHE EQUIPMENT AT ALLTIMES.  
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HS81A CUT-OFF SAW TABLE OF CONTENTS  
Carburetor Mounting Assembly .........................56-57  
MULTIQUIP — HS81A CUT-OFF  
Carburetor Assembly .........................................58-59  
Crankshaft and Piston Assembly .......................60-61  
Water Kit Assembly ............................................62-63  
Cart Assembly....................................................64-65  
Tools ...................................................................66-67  
Recommended Diamond Blades ............................ 68  
SAW  
Proposition 65 Warning ............................................. 2  
Table Of Contents ..................................................... 4  
Parts Ordering Procedures ....................................... 5  
Safety Message Alert Symbols .............................. 6-7  
Rules For Safe Operation .................................... 8-11  
Specifications (Saw/Engine) ................................... 12  
Decal Placement ..................................................... 13  
Controls & Components .....................................14-15  
Blade Installation Instructions ................................. 16  
Water Kit Installation Instructions ............................ 17  
Blades ..................................................................... 18  
Initial Start-Up/Operation ...................................19-20  
Maintenance ......................................................21-25  
Troubleshooting (Blade) .......................................... 26  
Troubleshooting (Engine)...................................27-28  
Filter Kits ................................................................. 29  
Explanation of Codes in Remarks Column ............. 30  
Suggested Spare Parts ........................................... 31  
Terms and Conditions of Sale — Parts ................... 69  
COMPONENT DRAWINGS  
Muffler Assembly ...............................................32-33  
Recoil Start Assembly ........................................34-35  
Crankcase Assembly .........................................36-37  
V-belt Cover (Clutch Side) Assembly .................38-39  
V-Belt Cover (Pulley) Blade Guard Assembly ....40-41  
Fuel Tank Assembly ...........................................42-43  
Lifting Handle and Roller Assembly ...................44-45  
Throttle Linkage Assembly ................................46-47  
Flywheel Cover Assembly..................................48-49  
Flywheel Assembly ............................................50-51  
Ignition Assembly ...............................................52-53  
Air Filter Assembly .............................................54-55  
Specifications and part  
numbers are subject to  
change without notice.  
PAGE 4 — HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10)  
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PARTS ORDERING PROCEDURES  
Ordering parts has never been easier!  
Choose from three easy options:  
Effective:  
January 1st, 2006  
Best Deal!  
Order via Internet (Dealers Only):  
Order parts on-line using Multiquip’s SmartEquip website!  
If you have an MQ Account, to obtain a Username  
and Password, E-mail us at: parts@multiquip.  
com.  
N View Parts Diagrams  
N Order Parts  
N Print Specification Information  
To obtain an MQ Account, contact your  
District Sales Manager for more information.  
Use the internet and qualify for a 5% Discount  
on Standard orders for all orders which include  
complete part numbers.*  
to log in and save!  
Order Parts  
Note: Discounts Are Subject To Change  
Fax your order in and qualify for a 2% Discount  
on Standard orders for all orders which include  
complete part numbers.*  
Order via Fax (Dealers Only):  
All customers are welcome to order parts via Fax.  
Domestic (US) Customers dial:  
1-800-6-PARTS-7 (800-672-7877)  
Note: Discounts Are Subject To Change  
Domestic (US) Dealers Call:  
Order via Phone:  
1-800-427-1244  
Non-Dealer Customers:  
International Customers should contact  
their local Multiquip Representatives for  
Parts Ordering information.  
Contact your local Multiquip Dealer for  
parts or call 800-427-1244 for help in  
locating a dealer near you.  
When ordering parts, please supply:  
R
Dealer Account Number  
R
Specify Preferred Method of Shipment:  
R
R
R
R
R
Dealer Name and Address  
UPS/Fed Ex  
DHL  
Truck  
N
N
Priority One  
Ground  
Shipping Address (if different than billing address)  
Return Fax Number  
N Next Day  
Second/Third Day  
Applicable Model Number  
N
Quantity, Part Number and Description of Each Part  
NOTICE  
All orders are treated as Standard Orders and will  
ship the same day if received prior to 3PM PST.  
WE ACCEPT ALL MAJOR CREDIT CARDS!  
HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10) — PAGE 5  
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HS81A CUT-OFF SAW — SAFETY MESSAGE ALERT SYMBOLS  
FORYOUR SAFETY ANDTHE SAFETY OF OTHERS!  
HAZARD SYMBOLS  
Safety precautions should be followed at all times when operating  
this equipment. Failure to read and understand the Safety  
Messages and Operating Instructions could result in injury to  
yourself and others.  
Lethal Exhaust Gases  
Engine exhaust gases contain poisonous  
carbon monoxide. This gas is colorless and  
odorless, and can cause death if inhaled.  
NEVER operate this equipment in a confined  
area or enclosed structure that does not  
provide ample free flow air.  
This Owner's Manual has been  
developed to provide complete  
instructions for the safe and efficient  
operation of the MULTIQUIP MODEL  
HS81A CUT-OFF SAW. For engine  
maintenance information, please refer  
NOTE  
to the maintenance section of this manual for data relative to its safe  
operation.  
Explosive Fuel  
Before using this SAW, ensure that the operating individual  
has read and understands all instructions in this manual.  
Gasoline is extremely flammable, and its  
vapors can cause an explosion if ignited. DO  
NOT start the engine near spilled fuel or  
combustible fluids. DO NOT fill the fuel tank  
while the engine is running or hot. DO NOT  
overfill tank, since spilled fuel could ignite if it  
comes into contact with hot engine parts or  
sparks from the ignition system. Store fuel in  
approved containers, in well-ventilated areas  
and away from sparks and flames. NEVER  
use fuel as a cleaning agent.  
SAFETY MESSAGE ALERT SYMBOLS  
The three (3) Safety Messages shown below will inform you  
about potential hazards that could injure you or others. The  
Safety Messages specifically address the level of exposure  
to the operator, and are preceded by one of three words:  
DANGER, WARNING, or CAUTION.  
Burn Hazards  
DANGER  
You WILL be KILLED or SERIOUSLY injured if you DO  
Engine components can generate extreme heat.  
To prevent burns, DO NOT touch these areas  
while the engine is running or immediately after  
operations. NEVER operate the engine with  
heat shields or heat guards removed.  
NOT follow directions.  
WARNING  
You CAN be KILLED or SERIOUSLY injured if you DO  
NOT follow directions.  
Rotating Parts  
CAUTION  
NEVER operate equipment with covers, or  
guards removed. Keep fingers, hands, hair  
and clothing away from all moving parts to  
prevent injury.  
You CAN be INJURED if you DO NOT follow directions.  
PAGE 6 — HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10)  
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HS81A CUT-OFF SAW — SAFETY MESSAGE ALERT SYMBOLS  
Accidental Starting  
Respiratory Hazard  
ALWAYS place the engine ON/OFF  
switch in the OFF position, when the saw  
is not in use.  
ALWAYS wear approved respiratory protection.  
Over Speed Conditions  
Sight and Hearing hazard  
NEVER tamper with the factory settings of the  
engine governor or settings. Personal injury  
and damage to the engine or equipment can  
result if operating in speed ranges above  
maximum allowable.  
ALWAYS wear approved eye and hearing  
protection.  
Equipment Damage Messages  
Guards and Covers In Place  
NEVER operate the saw without blade guards  
and covers in place. Adhere to safety  
guidelines ANSI, OSHA, or other applicable  
local regulations.  
Other important messages are provided throughout this manual  
to help prevent damage to your concrete saw, other property, or  
the surrounding environment.  
Rotating Blade  
Rotating blade can cut and crush. Keep  
hands and feet clear.  
This concrete/asphalt saw, other  
property, or the surrounding  
environment could be damaged if  
you do not follow instructions.  
NOTE  
HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10) — PAGE 7  
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HS81A CUT-OFF SAW — RULES FOR SAFE OPERATION  
NEVER touch the hot exhaust manifold,  
muffler or cylinder.Allowthese parts to cool  
before servicing the saw.  
WARNING - ReadThis Manual  
Failure to follow instructions in this manual may lead to  
Serious Injury or even Death. This equipment is to be  
operated by trained and qualified personnel only! This  
equipment is for industrial use only.  
The following safety guidelines should always be used  
when operating the Multiquip HS81A Cut-off Saw.  
HighTemperatures – Allow the engine to cool before adding  
fuel or performing service and maintenance functions. Contact  
with hot! components can cause serious burns.  
SAFETY  
DO NOT operate or service this equipment  
before reading this entire manual.  
The engine of this saw requires an adequate free flow of  
cooling air. NEVER operate the saw in any enclosed or narrow  
area where free flow of the air is restricted. If the air flow is  
restricted it will cause serious  
This equipment should not be operated by persons under 18  
years of age.  
NEVER operate the saw without proper protective clothing,  
shatterproof glasses, steel-toed boots and other protective  
devices required by the job.  
damage to the saw's engine  
and may cause injury to  
people. Remember the  
saw's engine gives off  
DEADLY carbon monoxide  
gas.  
ALWAYS refuel in a well-ventilated area, away from sparks  
NEVER operate this equipment when not feeling  
and open flames.  
well due to fatigue, illness or taking medicine.  
ALWAYS use extreme caution when  
working with flammable liquids.  
When refueling, STOP the engine and  
allow it to cool.  
NEVERoperatethesawunder the influence or drugs or alcohol.  
NEVER smoke around or near the saw.  
Fire or explosion could result from fuel  
vapors, or if fuel is spilled on a hot!  
engine.  
NEVER use accessories or attachments, which are not  
recommended by Multiquip for this equipment. Damage to  
the equipment and/or injury to user may result.  
Manufacturer does not assume responsibility for any accident  
due to equipment modifications. Unauthorized equipment  
modification will void all warranties.  
NEVER operate the saw in an explosive atmosphere where  
fumes are present or near combustible materials. An  
explosion or fire could result causing severe bodily harm  
or even death.  
Whenever necessary, replace nameplate, operation and  
safety decals when they become difficult read.  
ALWAYS move the saw at least 10 feet away from the fueling  
point before starting the engine and make sure the gas cap  
on the saw and the fuel can are properly tightened.  
ALWAYS check the saw for loosened hardware such as nuts  
and bolts before starting.  
Topping-off to filler port is dangerous, as it tends to spill fuel.  
NEVER use fuel as a cleaning agent.  
PAGE 8 — HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10)  
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HS81A CUT-OFF SAW — RULES FOR SAFE OPERATION  
General Safety  
ALWAYS hold the saw with both hands when the engine is  
running. Use a firm grip with thumbs and fingers encircling  
the handles.  
ALWAYS read, understand, and  
follow procedures in Operator's  
Manual before attempting to operate  
this equipment.  
ALWAYSkeep all parts of the body away from the cutting-off  
blades when the engine is running.  
ALWAYS keep the handles dry, clean and free of oil or fuel.  
ALWAYS carry the saw with the engine stopped and the  
muffler away from the body.  
ALWAYS wear proper respiratory (mask), hearing and eye  
protection equipment when operating the saw.  
ALWAYS instruct bystanders on where to stand while the  
saw is in operation.  
ALWAYS clear the work area of unnecessary people.  
NEVER allow anyone to stand in front of or behind the blade  
while the engine is running.  
ALWAYS make sure the blade is not contacting any objects  
before starting the engine.  
ALWAYS be sure the operator is familiar with proper safety  
precautions and operating techniques before using the saw.  
ALWAYS check for buried electrical cables before sawing. If  
unsure, contact the local utilities.  
ALWAYS inspect the blade, flanges and shafts for damage  
before installing the blade.  
ALWAYS have all service and maintenance performed by  
competent trained service personnel.  
ALWAYS use high-speed, reinforced, abrasive blades - 1/8"  
(3.17 mm) thick (minimum) or high-speed, diamond blades  
specifically rated with a maximum operating speed of at least  
5,400 RPM on 14" (350 mm) or 6,200 RPM on 12" (300 mm).  
ALWAYS clean the saw after each day’s use.  
ALWAYS have a copy of this manual at the job site.  
ALWAYS stop the engine before servicing, adding fuel and  
oil.  
ALWAYS use high-speed reinforced, abrasive blades or  
high-speed, diamond blades marked with a 1" (25.4 mm)  
hole for a 1" (25.4 mm) flange, or a 20 mm hole for a 20 mm  
flange.  
ALWAYS service air cleaner frequently to prevent carburetor  
malfunction.  
ALWAYS keep clear of rotating or moving parts while the  
saw is in operation.  
ALWAYS use abrasive blades or high-speed diamond blades  
marked for use with gasoline-powered, hand-held, portable,  
abrasive cutting-off saws.  
ALWAYS maintain this saw in a safe operating condition at  
all times.  
ALWAYS read all safety materials and instructions that  
accompany any blade used with this saw.  
ALWAYS keep any inexperienced and unauthorized people  
away from the saw at all times.  
ALWAYS inspect each blade carefully before using it.If there  
are any signs of damage or unusual wear, DO NOT USE  
THE BLADE.  
ALWAYS store saw properly when it is not being used.  
Equipment should be stored in a clean, dry location out of  
the reach of children.  
ALWAYS verify the blade arbor hole matches the saw's  
spindle before mounting the blade.  
ALWAYS mount the blade solidly and firmly. Wrench tighten  
the arbor nut.  
This saw is designed for certain  
applications only. DO NOT use or  
modify this saw for any application  
other than for which it was designed.  
ALWAYS make sure the blade and flanges are clean and  
free of dirt and debris before mounting the blade on the saw.  
NOTE  
ALWAYS use the correct blade for the type of work being  
done. Check with blade manufacturer if you do not know if  
blade is correct for desired application.  
HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10) — PAGE 9  
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HS81A CUT-OFF SAW — RULES FOR SAFE OPERATION  
Diamond Blade Safety  
NEVER leave the machine unattended while running.  
Use appropriate steel centered diamond blades  
manufactured for use on concrete saws.  
NEVER run the engine without the air filter. Severe engine  
damage could occur.  
NEVER wear jewelry or loose fitting clothing that may snag  
on the controls or moving parts, this can cause a serious  
injury.  
WARNING  
ALWAYS inspect diamond blades before each use. The  
blade should exhibit no cracks,  
dings, or flaws in the steel  
centered core and/or rim. Center  
(arbor) hole must be undamaged  
and true.  
NEVER operate this saw without the blade guard, or other  
protective guards in place.  
NEVER stand behind or in front of the blade path while the  
engine is running.  
NEVER use abrasive blades that are less the 1/8" (3.17 mm)  
thick.  
Examine blade flanges for  
damage, excessive wear and  
cleanliness before mounting  
blade. Blade should fit snugly on the shaft and against the  
inside/outside blade flanges.  
NEVER exceed maximum blade speed shown for each blade  
size. Excessive speed could result in blade breakage.  
NEVER use a damaged saw or blades.  
NEVER try to stop a moving blade with your hand.  
NEVER use an abrasive blade that has been dropped.  
Ensure the blade is marked with an operating speed greater  
than the blade shaft speed of the saw.  
Only cut the material that is specified by the diamond blade.  
Read the specifications of the diamond blade to ensure the  
proper tool has been matched to the material being cut.  
NEVER use carbide-tipped or toothed type blades of any  
kind.  
NEVER use segmented diamond blades unless they are  
specifically designed for high-speed, hand-held saws.  
ALWAYS keep blade guards in place. Exposure of the  
diamond blade must not exceed 180 degrees.  
NEVER place 1 inch (25.4 mm) arbor hole blades on 20 mm  
flanges.  
Ensure that the diamond blade does not come into contact  
with the ground or surface during transportation. DO NOT  
drop the diamond blade on ground or surface.  
NEVER use the side of a cutting-off blade as a grinder.  
NEVER cock, jam or wedge the blade in the cut.  
The engine governor is designed to permit maximum  
engine speed in a no-load condition. Speeds that exceed  
this limit may cause the diamond blade to exceed the  
maximum safe allowable speed.  
NEVER operate the saw if the blade does not stop rotating  
when the throttle trigger is released.  
NEVER start cutting until you have a clear work area and  
secure footing.  
Ensure that the blade is mounted correctly for proper  
operation.  
NEVER allow other persons to be near the saw when starting,  
refueling, or when the saw is operating.  
SawTransportation Safety  
NEVER allow bystanders or animals in the work area while  
using a cutting-off machine.  
NEVER transport the saw with the blade mounted.  
ALWAYS use caution when lifting and transporting this  
saw.  
NEVER touch a dry cutting diamond blade immediately after  
use. These blades require several minutes to cool after each  
cut.  
ALWAYS tie-down the saw when transporting.  
ALWAYS use caution and follow the instructions when  
loading and unloading the saw.  
NEVER use damaged or worn blade flanges. Discard any  
damage or worn saw parts.  
NEVER allow blade exposure from the guard to be more  
than 180 degrees.  
NEVER operate this saw without both hands on the handles.  
PAGE 10 — HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10)  
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HS81A CUT-OFF SAW — RULES FOR SAFE OPERATION  
EMERGENCIES  
ALWAYS know the location of  
the nearest fire extinguisher.  
ALWAYS know the location of the  
nearest first aid kit.  
In emergencies always know the location of the  
nearest phone or keep a phone on the job site.  
Also know the phone numbers of the nearest  
ambulance, doctor, and fire department. This  
information will be invaluable in the case of an  
emergency.  
HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10) — PAGE 11  
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HS81A CUT-OFF SAW — SPECIFICATIONS  
Table 1. HS81A Cut-off Saw Specifications  
50 x 18 x 33 in  
(1270 x 457 x 838 mm)  
Dimensions (Shipping) LxWxH  
Weight (without blade)  
Blade Size  
25.1 lbs. (11.4 kg)  
12 in. (305 mm)  
14 in. (356 mm)  
4 in. (100 mm)  
5 in. (127 mm)  
Maximum Cut Depth  
Arbor Size  
1 in. (25.4 mm)  
Reversible  
Cutting Arm  
Table 2. HS81A Power Source Specifications  
Engine Type  
Two-Stroke, Single Cylinder, Air cooled  
4.92 cu. in. (80.7 cc.)  
5,100 RPM  
Displacement  
Maximum Spindle Speed  
Engine Speed  
Idle Speed  
10,000 RPM  
2,500 RPM  
31.5 x 8.7 x15.75 in.  
(800 x 220 x 400 mm)  
Dimensions (LxWxH)  
Fuel Tank Capacity  
Fuel/Oil Mix Ratio  
Starting Method  
.23 Gallons (.9 Liters)  
See Figure 13  
Recoil Start  
Electronic  
Type  
Speed Controlled  
.014 in. (.35 mm)  
Champion/NGK  
RCJ7Y/BPR6A  
.02 in (.5 mm)  
Walbro  
Ignition  
Gap  
Manufacturer  
Type  
Spark Plugs  
Gap  
Manufacturer  
Model  
WJ85  
Carburetor  
Diaphragm/  
Semi-Fixed Jet  
EPA Approved  
Type  
PAGE 12 — HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10)  
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HS81A CUT-OFF SAW — DECAL PLACEMENT  
Machine Operation And Safety Decals  
The HS81A CUT-OFF SAW is equipped with a number of  
operation and safety decals (Figure 1). Should any of these  
decals become unreadable, replacements can be obtained from  
your dealer.  
P/N DCL 230  
P/N DCL 231  
P/N DCL 232  
P/N DCL 234A  
P/N DCL 161  
Figure 1. Safety Decals  
HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10) — PAGE 13  
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HS81A CUT-OFF SAW — CONTROLS & COMPONENTS  
3
2
1
4
12  
11  
9
5
8
7
10  
6
Figure 2. HS81A Cut-off Saw Components 1  
Figures 2 and 3 shows the location of the basic controls or  
components for the Multiquip Model HS81A Cut-off Saw. Listed  
below is a brief explanation of each control or component.  
1. Air Filter – Prevents dirt and debris from entering the engine  
air intake. Check filter periodically and keep cleaned or  
replace when necessary. NEVER run engine with a dirty  
air filter.  
7. RollerWheel – Allows for easy free movement of the saw  
when cutting on a flat surface.  
8. V-belt Cover (Clutch) – Unscrew these 2 nuts to remove  
the clutch V-belt cover. NEVER operate the saw with this  
cover removed. It may be necessary to remove the pulley  
cover first before this cover can be removed.  
2. Muffler Used to reduce noise and emissions. NEVER!  
touch muffler when engine is running. Allow engine to cool  
down.This component gets extremely hot!  
9. Decompression Valve – Push inward when starting  
3. Guard Adjustmet Knob – Allows for the adjustment of  
the blade guard. Turn this knob clockwise to tighten,  
counter-clockwise to loosen.  
engine.  
10. Choke Lever – Used in the starting of a cold engine, or in  
cold weather conditions. The choke enriches the fuel  
mixture.  
4. Pulley Lock Pin Hole – Insert a phillips head screw driver  
or similar tool into this hole to prevent the pulley from rotating.  
11. Rear Handle – When starting engine, place right foot onto  
rear handle base. For normal operation always place one  
hand on the rear handle and the other hand on the upper  
handle.Always use two hands when operating the saw.  
5. V-beltTensioning Cam Allows for the adjustment of the  
V-belt. To tighten V-belt turn clockwise, to slacken turn  
counterclockwise.  
6. V-belt Cover (Pulley) – Unscrew these 3 nuts to remove  
the pulley V-belt cover. NEVER operate the saw with this  
cover removed.  
12. Engine ON/OFF Switch – ON position permits engine  
starting, OFF position stops engine operation.  
PAGE 14 — HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10)  
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HS81A CUT-OFF SAW — CONTROLS & COMPONENTS  
14  
13  
16  
15  
22  
21 20 19  
18  
17  
Figure 3. HS81A Cut-off Saw Components 2  
13. Blade Guard – Covers saw blade.  
18. Fuel Filler Cap – Remove this cap to add mixed fuel  
(requires a 25:1 mixture) to the fuel tank.This saw uses a  
2-stroke engine.Make sure fuel cap is tightened securely.  
DO NOT over fill. See Figure 13 for correct fuel to oil mixture.  
14. Front Handle – When lifting or carrying of the saw is  
required, use this handle.  
15. Throttle Lock Lever – Using your thumb, press this lever  
downward and squeeze the trigger lever to lock the throttle  
in place.This will allow the saw blade to rotate at maximum  
speed without having to hold the trigger lever.Squeeze the  
trigger lever again to unlock the throttle.  
19. Recoil Starter (pull rope) – Manual-starting method. Pull  
the starter grip until resistance is felt, then pull briskly and  
smoothly.  
20. Blade Shaft Nut – Loosen to remove the cutting blade  
from the outer and inner flanges.  
16. Variable Throttle Lever To obtain a variable blade  
speed, press this lever downward then squeeze the throttle  
trigger.  
21. Cutting Blade – Use appropriate type blades for desired  
cutting application.  
17. ThrottleTrigger Lever – Squeeze this lever to start the  
saw blade rotation. Release the trigger lever to stop the  
saw blade rotation. This lever is to be used in conjunction  
with either the throttle lock or variable throttle levers.  
22. Spark Plug – Provides spark to the ignition system. Set  
spark plug gap to 0.02 inch (0.5 mm). Clean spark plug  
once a month.  
HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10) — PAGE 15  
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HS81A CUT-OFF SAW — BLADE INSTALLATION INSTRUCTIONS  
The Multiquip Side Winder Cut-Off Saw comes with aTool Kit  
(Figure 4) that assists you with day to day operations.You will  
need these tools for the assembly of your saw.  
Item is a versatile screwdriver/wrench that accommodates  
common bolt/screw and nut head sizes of your saw.  
Item  
allen screws.  
is the wrench necessary to accommodate various  
Figure 4. Tool Kit  
Blade Installation Procedure  
STEP 1  
STEP 3  
Chose the proper blade arbor side of the inner flange (to match  
For proper installation, first remove the blade shaft nut  
,  
your cutting blade arbor) and place this selected side to the  
outer flange  
, and inner “dual-arborflange  
.
blade shaft .  
Figure 5. Inner and Outer Flanges (Removal)  
STEP 2  
A dual sided, “dual-arbor” inner flange  
Figure 7. Selecting the Proper Blade Arbor  
STEP 4  
accommodates either  
Match the arbor side to the dimension of your blade arbor and  
“sandwich” between the inner and outer flanges. Tighten the  
blade shaft nut securely to hold the blade in place.  
a 20 mm or 1-inch arbor hole for operator safety and convenience.  
The outer flange fits on top of the cutting blade.  
Figure 6. Inner and Outer Flanges (Placement)  
Figure 8. Securing the Cutting Blade  
PAGE 16 — HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10)  
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HS81A CUT-OFF SAW WATER KIT INSTALLATION INSTRUCTIONS  
Contents ofWater Kit  
The contents of theWater Kit cannot be purchased seperately.  
See Water Kit Assembly in Parts Section of this manual for  
Water Kit part number.  
Hose Clamp   
Socket Head Cap Screw w/Washer   
Quick Disconnect Fitting  
Water Hose   
Hex KeyTool (Included withTool Kit)  
Plastic Ties   
Figure 9. Water Kit Parts  
Wet Air Filter Canister (Sold Seperately)  
Water Kit Installation Procedure  
Connect the Quick Disconnect Fitting to the  
single end of the Water Hose .  
Snap fit the Water Hose Outlets to the Holes in the  
Blade Guard .Orient the Water Hose through the  
Front Handle.  
Loop the Hose Clamp around theWater Hose   
and fasten the clamp to the Roller Bar Support Arm  
using the Socket Head Cap Screw w/Washer , and  
Hex KeyTool .  
Figure 10. Water Kit Assembly Points  
Use the PlasticTies as preferred to further secure  
the hose fittings and water hose to the saw.  
When using theWater Kit option for your saw, the Dry Air  
Filter Canister MUST be replaced with the Wet Air Filter  
Canister (See Air Filter Kit Assembly in Parts  
Section of this manual).  
Figure 11. Wet Air Filter Canister  
HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10) — PAGE 17  
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HS81A CUT-OFF SAW — BLADES  
PREPARATION / PRE-INSPECTION  
1. Read and fully understand this manual,  
the safety instructions in particular, and  
the engine manufacturer's manual  
supplied with the saw.  
2. Select the correct blade for each application. If abrasive  
blades are used, MAKE CERTAIN they are designed for  
use on a concrete floor saw. They must be reinforced and  
have a hole for the driving pin. When wet cutting with an  
abrasive blade, MAKE CERTAIN the blade is intended for  
wet cutting. Water will destroy a dry cut abrasive blade.  
Some diamond blades require water cooling and failure to  
do so will destroy them almost immediately. Other diamond  
blades can be used with or without water.  
Figure 12. Diamond Blade  
2. Edge of the Steel Core - Check the diameter edge for  
discoloration (blue oxidation) indicating an overheating  
condition caused by insufficient cooling water/air.  
Overheating of blades may lead to loss of core tension and/  
or increase the possibility for blade failure. Make sure the  
steel core's width is uniform about the rim of the blade, and  
not succumbing to an "under-cutting" condition brought  
about by highly abrasive material or improper under-cutting  
core protection  
3. Handle all blades with care and NEVER use a damaged  
blade. NEVER use an abrasive blade that has been  
dropped.  
BLADES  
3. Directional Arrow - Ensure that the blade is oriented  
properly on the blade shaft for sawing. Reference the  
directional arrow on the blade and place it so the direction  
of rotation "downcuts" with the turn of the shaft.  
Saw blades, or cutting disks, are available in either an abrasive  
design or as diamond blades. Either blade will work on the  
HS81ACUT-OFFSAW,however,diamondbladesare recommended.  
Ask your dealer about your specific cutting application.  
4. Diamond Segment or Rim - Ensure there are no cracks,  
dings, or missing portions of the diamond segment/rim. DO  
NOT use a blade that is missing a segment or a portion  
of the rim. Damaged and /or missing segments/rims may  
cause damage to your saw or injury to the user or others in  
the operating area.  
SAW BLADE INSPECTION  
WARNING  
Failure to thoroughly inspect the diamond  
blade (Figure 12) for operational safety  
could result in damage to the blades or  
the saw and may cause injury to the user  
or others in the operating area.  
5. Specifications - Ensure that the blade specifications, size,  
and diameter properly match up to sawing operations.  
Utilizing a blade not matched properly to the task may result  
in poor performance and/or blade damage.  
6. Arbor Hole - It is essential that the arbor hole diameter  
properly matches the blade, and that it is free from distortion.  
Correct blade flanges (collars) must be used. The inside  
face of the flanges must be clean and free of debris. An out-  
of-round arbor condition will cause damage to the blade  
and the saw.  
1. Stress Relief Holes (Gullets) - Check the steel core for  
cracks that may have propagated from the slots and/or  
gullets. Cracks indicate extreme fatigue failure and if sawing  
continues, catastrophic failure will occur.  
7. MAX RPM - This RPM reference is the maximum safe  
operating speed for the blade selected. NEVER exceed the  
max RPM on the diamond blade. Exceeding the maximum  
RPM is dangerous and may cause poor performance and  
may damage the blade.  
PAGE 18 — HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10)  
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HS81A CUT-OFF SAW — INITIAL START-UP/OPERATION  
INITIAL START-UP  
2-STROKE  
MOTOR OIL  
2.6 FL.OZ  
UNLEADED  
FUEL  
DO NOT attempt to operate the saw until  
the Safety, General Information and  
CAUTION  
Inspection sections of this manual have  
been read and thoroughly understood.  
Depending on engine manufacturer,  
operating steps may vary. See engine  
90 OCTANE  
PREMIUM  
manufactures operating manual.  
UNLEADED  
GASOLINE  
CAUTION  
NEVER operate the saw in a  
confined area or enclosed  
area structure that does not  
provide ample free flow of air.  
UNLEADED GAS 2-STROKE OIL NUMBER OF  
GAL. (LITERS)  
FUEL TO OIL  
MIXTURE RATIO  
25:1 (4%)  
OZ. (ML)  
BOTTLES  
1 (3.78)  
2 (7.57)  
5 (18.92)  
5.2 (154)  
10.4 (308)  
26 (769)  
2
4
10  
Figure 13. Fuel to Oil Mixture  
DO NOT use automotive motor oil when  
adding oil to fuel. For optimum performance  
and proper lubrication, the manufacture  
recommends that the fuel to oil ratio mixture  
be 25:1  
ALWAYS wear approved eye and hearing  
protection before operating the saw.  
NOTE  
NEVER place hands or feet inside the belt  
guard or blade guard while the engine is  
running. ALWAYS shut the engine down  
before performing any kind of maintenance  
service on the saw.  
A single bottle ( 2.6 fl. oz) of smokeless 2-stroke motor oil cannot  
be purchased separately. However you can purchase from  
Multiquip a case (P/N 00325) of 48 individual bottles or a 6 pack  
(P/N 003256PAK).  
Starting  
1. Place the engine ON/OFF switch in the ON position  
Explosive Fuel  
Fuel Check  
2. Using your thumb, press down on the throttle lock lever,  
while squeezing the throttle trigger.This will lock the throttle  
in the half-throttle position.  
Motor fuels are highly flammable and can be  
dangerous if mishandled. DO NOT smoke  
while refueling. DO NOT attempt to refuel the  
saw if the engine is hot! or running.  
3. Pull the choke lever all the way out to the CLOSED position.  
4. Pull the decompression button outward.  
1. Remove the fuel cap located on the side of the saw.  
5. Place the saw on level ground. Make sure the saw blade is  
free to rotate and will not come into contact with any foreign  
objects.  
2. Visually inspect to see if fuel level is low. If fuel is low,  
replenish with fuel oil mixture as shown in Figure 13.  
6. Hold the front handle firmly with the left hand and put your  
right foot onto the base of the rear handle.  
3. When refueling, be sure to use a strainer for filtration. DO  
NOT top-off fuel. Wipe up any spilled fuel.  
The CLOSED position of the choke lever  
enriches the fuel mixture for starting a COLD  
engine. The OPEN position provides the  
correct fuel mixture for normal operation after  
starting, and for restarting a warm engine.  
This saw uses a 2-stroke engine which  
requires a mixture of no less than 90 octane  
NOTE  
NOTE  
premium unleaded gasoline and smoke  
free 2-stroke motor oil. See Figure 13.  
HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10) — PAGE 19  
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HS81A CUT-OFF SAW — INITIAL START-UP/OPERATION  
7. Graspthe startergrip andslowlypullitout.Theresistance  
becomesthehardestatacertainposition,correspondingto  
thecompressionpoint.Pullthestartergripbrisklyandsmoothly  
forstarting.  
Mark the cutting line clearly and always  
saw in a STRAIGHT LINE ONLY.  
NOTE  
8. Iftheenginehasstarted,slowlyreturnthechokelever tothe  
"OPEN"position.Iftheenginehasnotstartedrepeatsteps  
1 through 9.  
4. When the end of the cut has been reached, raise the blade  
out of the cut .  
9. Squeezethethrottlelevertriggertoreleaseitfromthehalf-  
throttleposition.  
5. Ifcuttingiscomplete,turntheengineoffandwaitfortheblade  
tostoprotating.  
10. Before the saw is placed into operation, run the engine for  
severalminutes. Checkforfuelleaks,andnoisesthatwould  
associate with a loose guards and/or covers.  
Shut-down  
1. Let the engine idle for 3-5 minutes.  
2. Place the engine ON/OFF switch to the OFF position  
3. Wait for the blade to stop spinning before handling the saw.  
OPERATION  
WARNING  
4. DO NOT touch the cutting blade it is very hot!, allow it to  
ALWAYS cut with the saw at FULLTHROTTLE. Attempting to  
cut with the saw at less than full throttle could cause the blade to  
bind or stop abruptly in the slab resulting in serious injury to the  
operator or others in the area.  
cool, severe burn condition exists.  
WARNING  
ALWAYS keep clear of rotating or moving parts while operating  
this equipment.  
2. Tobeginsawing,lowertherotatingbladeallowingittocutto  
thepresetdepth.  
3. When blade has reached full cutting depth, slowly walk  
behindthesawataratethatwillallowtheenginetooperate  
withoutlosingoptimumRPM.  
CAUTION  
DO NOT try to cut faster than the blade will allow.  
Cutting too fast will cause the blade to rise up  
out of the cut. Improper cutting rate can decrease  
the life of the engine and blades.  
PAGE 20 — HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10)  
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HS81A CUT-OFF SAW — MAINTENANCE  
V-Belt Changing Procedure  
N
Remove the 2 hex nuts and hex screw and washer to  
gain access to the V-belt on the clutch side. Remove V-belt  
cover .  
Figure 14. Belt Guard Cover Removal  
Remove the 2 hex nuts and hex screw and guard adjustment  
knob to gain access to theV-belt on the spindle side. Remove  
the Cover Guard .  
Figure 15. Re-Installing Cover Guard  
Using the provided wrench, loosen the three nuts to reduce  
the tension on theV-belt, then turn the V-beltTensioning Cam  
until the V-belt is completely slacked.  
Figure 16. V-BeltTensioning  
Remove the V-belt from the clutch and spindle pulleys.  
Install the newV-belt around both pulleys.It is essential that the  
drive V-belt is properly positioned around both the clutch and  
spindle pulleys.  
Figure 17. DriveV-Belt  
HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10) — PAGE 21  
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HS81A CUT-OFF SAW — MAINTENANCE  
V-Belt Changing Procedure (continued)  
Re-tension the V-belt by turning the belt tensioning cam .  
TheV-belt should remain in tension.  
Fully tighten the three nuts that lock theV-belt into the proper  
tensioning position.  
Figure 18. Reversing the Cutting Arm  
and V-belt covers. Fully tighten  
Re-install the guard   
the two cap screws   
and reinstall the adjustment knob .  
N
Figure 19. Re-Installing Cover Guard  
PAGE 22 — HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10)  
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HS81A CUT-OFF SAW — MAINTENANCE  
Reversing the Cutting Arm Procedure  
This assembly procedure permits the operator to reorient the cutting blade closer to a wall, column  
and/or object.  
NOTE  
The Multiquip Side Winder Cut-Off Saw comes with aTool Kit  
(Figure 20) that assist you with day to day operations.You will  
need these tools for the maintenance of your saw.  
Item is a versatile screwdriver/wrench that accommodates  
common bolt/screw and nut head sizes of your saw.  
Item is the wrench necessary to accommodate various allen  
screws.  
Figure 20. Tool Kit  
This position displays the cutting blade on the inside (center)  
cutting position.To reverse the blade position continue with the  
following steps:  
Remove the following items from the Cutting Arm Assembly  
to expose theV-belt:  
Guard Adjustment Knob   
Two Cap Screws   
Cover Guard   
Figure 21. Inside Center Cutting Position  
Loosen the belt tensioning cam  
and remove the three  
nuts .This will take tension off theV-belt, and permit you to  
reverse the cutting arm.  
Figure 22 BeltTensioning Cam  
HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10) — PAGE 23  
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HS81A CUT-OFF SAW — MAINTENANCE  
Reversing the Cutting Arm Procedure (continued)  
Reverse the cutting arm 180 degrees as shown in the Figure  
23, and re-tension the V-belt by turning the belt tensioning  
cam .The V-belt should remain in tension.  
Fully tighten the three nuts that lock theV-belt into the proper  
tensioning position.  
Figure 23. Reversing the Cutting Arm  
Re-attach the cover guard with the 2 cap screws  
,  
and reconnect the guard adjustment knob  
.  
Figure 24. Re-attaching Cover Guard  
PAGE 24 — HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10)  
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HS81A CUT-OFF SAW — MAINTENANCE (AIR/FUEL FILTER)  
Air/Fuel Filter Maintenance Procedures  
Check the fuel filter located inside the fuel tank periodically  
for dirt/debris build up. It is recommended to change the fuel filter  
every 50 tanks of fuel.  
This engine is a 2-stroke gasoline engine requiring a specific  
fuel to oil mixture of 25:1(4%). It is recommended to use an  
unleaded gasoline rated at 92 octane (premium) with an oil for  
use on 2-stroke engines only.See Figure 13.  
Figure 25. Fuel Filter  
It is highly recommended to keep a supply of spare pre-filters  
on hand.Maintaining the foam pre -filter, and regular exchanges  
will prolong the life of the main filter element.  
Every 8 hours of operation, remove the pre-air cleaner cover  
and wash the foam pre-cleaner in warm fresh soapy  
water. Let dry thoroughly. When dry, completely coat the filter  
with only an approved foam filter oil.  
Figure 26. Pre-Filter  
Every 8 hours of operation, remove the covers and   
and inspect the main filter element. Clean the main filter  
element by vigorously shaking out and dusting off with a  
soft brush. DO NOT air blast clean this element with compressed  
gas.  
The main filter element should be replaced after three pre filter  
changes  
Figure 27. Main Filter Element  
Every 8 hours of operation, inspect the supplementary filter  
element . Clean the supplementary filter element by  
vigorously shaking out and dusting off with a soft brush. DO  
NOT air blast clean this element with compressed gas.  
The supplementary filter element should be replaced after  
three pre filter changes.  
Figure 28. Supplementary Filter  
HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10) — PAGE 25  
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HS81A CUT-OFF SAW — TROUBLESHOOTING (BLADE)  
TABLE 3. BLADE TROUBLESHOOTING  
SYMPTOM  
POSSIBLE PROBLEM  
SOLUTION  
Consult Dealer or Multiquip for correct blade. Try cutting  
very soft material (sandstone, silica brick, cinder block) to  
"Redress" the blade.  
Blade too hard for the material being  
cut?  
Engine torque diminished because of  
loose V-belt?  
Tighten and/or replace V-Belts.  
Blade slows or stops cutting.  
Insufficient engine power?  
Check throttle setting. Check Engine horsepower.  
Check that the blade is properly oriented and rotational  
arrow points in a "Down-Cutting" direction.  
Improper direction of rotation?  
Check that the blade & flange pin are properly installed on  
the blade shaft.  
Blade is slipping on the blade shaft?  
Blade being used on misaligned saw?  
Check blade shaft bearings and alignment integrity.  
Blade is excessively hard for the  
material being cut?  
Check specification of the blade with the material being  
cut. Consult Dealer or Multiquip for information.  
Ensure blade surface feet per minute speed (SFPM) is  
approximately 6,000.  
Blade being used at improper RPM?  
Blade does not cut straight  
and/or true.  
Blade improperly mounted on arbor  
shoulders and flanges?  
Ensure blade is properly affixed on the blade shaft.  
Excessive force applied to blade while  
cutting?  
DO NOT force the blade in the cut. Apply a slow and  
steady pace when sawing.  
Consult Dealer or Multiquip for correct blade. Try cutting  
very soft material (sandstone, silica brick, cinder block) to  
"Redress" the blade.  
Blades too hard for the material being  
cut?  
Blade improperly mounted on arbor  
shoulders and flanges?  
Ensure blade is properly affixed on the blade shaft.  
Ensure proper flow & volume of water is provided for wet  
cutting blades. Ensure sufficient cooling air is circulated  
about a dry cutting blade.  
Blade not receiving enough cooling  
water or air?  
Blade discoloring, crackling  
and/or wearing excessively.  
Arbor hole out of round?  
Ensure blade is properly affixed on the blade shaft.  
Incorrect blade chosen for material  
being cut?  
Check specification of the blade with the material being  
cut. Consult Dealer or Multiquip for information.  
Excessive force applied to blade while  
cutting?  
DO NOT force the blade in the cut. Apply a slow and  
steady pace when sawing.  
PAGE 26 — HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10)  
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HS81A CUT-OFF SAW — TROUBLESHOOTING (ENGINE)  
TABLE 4. TROUBLESHOOTING (ENGINE)  
SYMPTOM  
POSSIBLE CAUSE  
SOLUTION  
Check gap, insulation or  
replace spark plug.  
Spark plug bridging?  
Carbon deposit on spark plug?  
Clean or replace spark plug.  
Difficult to start, "fuel is available, but no  
SPARK at spark plug".  
Short circuit due to deficient spark plug  
insulation?  
Check spark plug insulation,  
replace if worn.  
Improper spark plug gap?  
Ignition coil defective?  
Set to proper gap.  
Replace ignition coil.  
Check switch wiring, replace  
switch.  
ON/OFF switch is shorted?  
Set correct spark gap and  
clean points.  
Improper spark gap, points dirty?  
Difficult to start, "fuel is available, and  
SPARK is present at the spark plug".  
Condenser insulation worn or short  
circuiting?  
Replace condenser.  
Replace defective spark plug  
wiring.  
Spark plug wire broken or short circuiting?  
Wrong fuel type?  
Flush fuel system, and replace  
with correct type of fuel.  
Water or dust in fuel system?  
Air cleaner dirty?  
Flush fuel system.  
Clean or replace air cleaner.  
Close Choke.  
Difficult to start, "fuel is available, spark  
is present and compression is normal".  
Choke Open?  
Suction/exhaust valve stuck or protruded?  
Re-seat valves.  
Replace piston rings and/or  
piston.  
Piston ring and/or cylinder worn?  
Difficult to start, "fuel is available, spark  
is present and compression is low".  
Cylinder head and/or spark plug not  
tightened properly?  
Torque cylinder head bolts and  
spark plug.  
Head gasket and/or spark plug gasket  
damaged?  
Replace head and/or spark plug  
gaskets.  
Fuel not available in fuel tank (tank empy)? Fill with correct type of fuel.  
Fuel filter clogged?  
Replace fuel filter.  
No fuel present at the carburetor.  
Fuel tank cap breather hole clogged?  
Air in fuel line?  
Clean or replace fuel tank cap.  
Bleed fuel line.  
HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10) — PAGE 27  
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HS81A CUT-OFF SAW — TROUBLESHOOTING (ENGINE)  
TABLE 4. TROUBLESHOOTING (ENGINE, CONTINUED)  
SYMPTOM  
POSSIBLE CAUSE  
Air cleaner not clean?  
SOLUTION  
Clean or replace air cleaner.  
Check float adjustment.  
Rebuild carburetor.  
Improper fuel level in carburetor?  
"Weak in power" compression is proper  
and does not misfire.  
Defective spark plug?  
Clean or replace spark plug.  
Set to proper gap.  
Improper spark plug gap?  
Flush fuel system and replace  
with correct type fuel.  
Water in fuel system?  
"Weak in power" compression is proper  
but misfires.  
Ignition coil defective?  
Dirty spark plug?  
Replace ignition coil.  
Clean or replace spark plug.  
Flush fuel system, and replace  
with correct type of fuel.  
Wrong fuel type?  
Replace with correct type of  
spark plug.  
Engine overheats.  
Spark plug heat value improper?  
Cooling fins dirty?  
Clean cooling fins.  
Adjust governor.  
Governor adjusted correctly?  
Governor spring defective or missing?  
Replace governor spring.  
Rotational speed fluctuates.  
Recoil starter malfunction.  
Check entire fuel system for  
leaks or clogs.  
Fuel flow restricted?  
Recoil mechanism clogged with dust and  
dirt?  
Clean recoil assembly with soap  
and water.  
Spiral spring loose?  
Replace spiral spring.  
PAGE 28 — HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10)  
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HS81A CUT-OFF SAW — FILTER KITS  
For Side Winder HS Series Cut-Off Saws  
HS81A  
DRY FILTER KITS  
HS81FK1A  
HS81FK5A  
HS81FK10A  
[ Includes 1 ea.]  
[ Includes 5 ea.]  
[ Includes 10 ea.]  
HS52010451R- Foam Filter  
HS018600125R- Paper Filter  
HS018600056AR - Inner Filter  
HS52010451R - Foam Filter  
HS018600125R - Paper Filter  
HS018600056AR - Inner Filter  
HS52010451R - Foam Filter  
HS018600125R - Paper Filter  
HS018600056AR - Inner Filter  
WET FILTER  
* Replaces DRY Air Filter CanisterWhen UsingWater &  
Standard Water Kit (provided)  
HS099900778A  
[ Includes 1 ea.]  
HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10) — PAGE 29  
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HS81A CUT-OFF SAW — EXPLANATION OF PARTS SECTION REMARKS  
The following section explains the different symbols and  
remarks used in the Parts section of this manual. Use the  
help numbers found on the back page of the manual if there  
are any questions.  
QTY. Column  
Numbers Used — Item quantity can be indicated by a  
number, a blank entry, or A/R.  
A/R (As Required) is generally used for hoses or other  
parts that are sold in bulk and cut to length.  
NOTICE  
The contents and part numbers listed in the parts  
section are subject to change without notice.Multiquip  
does not guarantee the availability of the parts listed.  
A blank entry generally indicates that the item is not sold  
separately.Other entries will be clarified in theRemarks”  
Column.  
SAMPLE PARTS LIST  
REMARKS Column  
NO. PART NO. PART NAME  
QTY. REMARKS  
Some of the most common notes found in the “Remarks”  
Column are listed below. Other additional notes needed  
to describe the item can also be shown.  
1
2%  
12345  
BOLT......................1 .....INCLUDES ITEMS W/%  
WASHER, 1/4 IN............NOT SOLD SEPARATELY  
WASHER, 3/8 IN....1 .....MQ-45T ONLY  
2% 12347  
3
4
12348  
12349  
HOSE ..................A/R ...MAKE LOCALLY  
BEARING ..............1 .....S/N 2345B AND ABOVE  
Assembly/Kit — All items on the parts list with the  
same unique symbol will be included when this item is  
purchased.  
NO. Column  
Indicated by:  
Unique Symbols — All items with same unique  
symbol  
“INCLUDES ITEMS W/(unique symbol)”  
(@, #, +, %, or >) in the number column belong to the  
same assembly or kit, which is indicated by a note in the  
“Remarks” column.  
Serial Number Break — Used to list an effective serial  
number range where a particular part is used.  
Indicated by:  
Duplicate Item Numbers — Duplicate numbers indicate  
multiple part numbers, which are in effect for the same  
general item, such as different size saw blade guards in  
use or a part that has been updated on newer versions  
of the same machine.  
“S/N XXXXX AND BELOW”  
“S/N XXXX AND ABOVE”  
“S/N XXXX TO S/N XXX”  
Specific Model Number Use — Indicates that the part  
is used only with the specific model number or model  
number variant listed. It can also be used to show a  
part is NOT used on a specific model or model number  
variant.  
NOTICE  
When ordering a part that has more than one item  
number listed, check the remarks column for help in  
determining the proper part to order.  
Indicated by:  
“XXXXX ONLY”  
“NOT USED ON XXXX”  
PART NO. Column  
Numbers Used — Part numbers can be indicated by a  
number, a blank entry, or TBD.  
“Make/Obtain Locally” — Indicates that the part can  
be purchased at any hardware shop or made out of  
available items.Examples include battery cables, shims,  
and certain washers and nuts.  
TBD (To Be Determined) is generally used to show a  
part that has not been assigned a formal part number  
at the time of publication.  
“Not Sold Separately— Indicates that an item cannot  
be purchased as a separate item and is either part of an  
assembly/kit that can be purchased, or is not available  
for sale through Multiquip.  
A blank entry generally indicates that the item is not sold  
separately or is not sold by Multiquip. Other entries will  
be clarified in the “Remarks” Column.  
PAGE 30 — HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10)  
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HS81A CUT-OFF SAW — SUGGESTED SPARE PARTS  
SUGGESTED SPARE PARTS  
HS81A SIDEWINDER CUT-OFF SAW  
1 to 3 Units  
Qty.  
P/N  
Description  
1 ............ HS52012047A....... STARTER ASSEMBLY  
3 ............ HS098000079R .... ROPE, STARTER  
1 ............ HS50140060 ......... HANDLE, ROPE  
1 ............ HS098000060A ..... SPRING & CASE, STARTER  
6 ............ HS3055118 ........... SPARK PLUG  
1 ............ HS097000132 ....... CLUTCH ASSEMBLY  
1 ............ HS52022005 ......... FUEL CAP, W/O-RING  
3 ............ HS50010218 ......... FILTER, FUEL  
1 ............ HS52010092 ......... THROTTLE TRIGGER LEVER  
1 ............ HS52010077 ......... THROTTLE LOCK LEVER  
1 ............ HS52010078 ......... CHOKE LEVER  
1 ............ HS52010022A....... COVER, BELT GUARD  
3 ............ HS3914010 ........... NUT, BELT COVER  
3 ............ HS018100180 ....... V-BELT  
2 ............ HS018600235 ....... FLANGE, ARBOR  
2 ............ HS018600236A ..... FLANGE, ARBOR  
2 ............ HS52010177 ......... SCREW ANDWASHER, ARBOR  
2 ............ HS52010062A....... KNOB, ADJ. GUIDE  
2 ............ HS3833080 ........... WASHER, ADJ.GUIDE  
2 ............ HS52010045 ......... SPACER, ADJ. GUIDE  
2 ............ HS52010013 ......... LOCK, GUIDE BLADE GUARD  
1 ............ HS52012024B....... FLANGE, PRE-FILTER CAP  
1 ............ HS52010014B....... SUPPORT FILTER  
2 ............ HS3802002A......... SCREW, FILTER SUPPORT  
1 ............ HS330000010 ....... O-RING, FLANGE PRE-FILTER  
1 ............ HS018600090A ..... GASKET, AIR FILTER LOWER  
18 .......... HS018600125R .... AIR FILTER  
6 ............ HS018600056AR .. FILTER, AIR INNER  
18 .......... HS52010451R ...... PRE-FILTER, FOAM  
3 ............ HS4191240 ........... TOOL KIT  
3 ............ HS099900778A ..... WET, AIR FILTER  
3 ............ HS52010082 ......... BREATHER ASSEMBLY  
1 ............ 00325 .................... CASE, OIL 2-STROKE NON-SMOKE - 36 BOTTLES  
The contents of this parts  
catalog are subject to change  
without notice.  
NOTE  
HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10) — PAGE 31  
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HS81A CUT-OFF SAW — MUFFLER ASSY.  
MUFFLER ASSY.  
PAGE 32 — HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10)  
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HS81A CUT-OFF SAW — MUFFLER ASSY.  
MUFFLER ASSY.  
NO.  
PART NO.  
PART NAME  
SCREW  
WASHER  
COVER, MUFFLER  
SCREW  
SCREW  
WASHER  
DEFLECTOR, MUFFLER  
SCREEN  
MUFFLER ASSEMBLY ............................. 1 ......... INCLUDES ITEMS W/  
SCREW  
QTY.  
REMARKS  
1
*
2
*
3
*
4
*
5
*
6
*
7
*
8
*
9
HS3801052  
3
5
1
2
2
2
1
1
HS3033074  
HS097000342A  
HS3801045  
HS005100913B  
HS3833073  
HS098000133  
HS098000132  
HS52010441  
HS097000092A  
HS097000094A  
*
10  
11  
2
1
*
GASKET, MUFFLER  
HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10) — PAGE 33  
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HS81A CUT-OFF SAW — RECOIL START ASSY.  
RECOIL START ASSY.  
PAGE 34 — HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10)  
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HS81A CUT-OFF SAW — RECOIL START ASSY.  
RECOIL START ASSY.  
NO.  
PART NO.  
PART NAME  
QTY.  
REMARKS  
14  
HS50140060  
HS098000079R  
HS098000060A  
HS3960017  
HANDLE, STARTER ROPE  
ROPE, STARTER  
SPRING AND CASE, STARTER  
SCREW  
1
1
1
4
1
1
1
1
1
4
*
15  
*
16  
*
17  
*
18  
HS3960116  
HS50140055  
HS3918006  
HS52010439B  
HS3908036  
HS099900296R  
HS52012047A  
HS52010410  
HS50140056  
HS52010404  
SCREW  
COVER  
WASHER  
PULLEY, STARTER  
SCREW  
*
19  
*
20  
*
21  
*
22  
*
23  
SCREW  
24  
STARTER ASSEMBLY .............................. 1 ......... INCLUDES ITEMS W/  
CAP  
CAP  
SPACER  
*
25  
1
1
1
*
26  
*
27  
*
HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10) — PAGE 35  
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HS81A CUT-OFF SAW — CRANKCASE ASSY.  
CRANKCASE ASSY.  
PAGE 36 — HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10)  
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HS81A CUT-OFF SAW — CRANKCASE ASSY.  
CRANKCASE ASSY.  
NO.  
3
11  
12  
16  
18  
PART NO.  
PART NAME  
PLATE  
RUBBER CLAMP  
CAP  
QTY.  
REMARKS  
HS52010312  
HS09990268  
HS52020040  
HS097000009A  
HS52012018  
HS3034012  
1
1
1
1
GASKET, CRANKCASE  
CRANKCASE W/ BEARING ASSY ........................ 1 ......... INCLUDES ITEMS W/  
BEARING, CRANKCASE  
GROMMET  
GROMMET  
WASHER  
SCREW  
BAR STUD, CRANKCASE  
SCREW  
SCREW  
GROMMET  
SPLIT PIN  
*
19  
20  
2
1
1
7
2
2
4
1
1
1
2
1
1
*
HS099900110  
HS52010117  
HS3833073  
HS006100303  
HS097000080BR  
HS3801015  
HS005100987  
HS097000057  
HS006000102  
HS3023008  
HS52010078  
HS3049030  
21  
22  
23  
24  
26  
28  
30  
31  
37  
40  
41  
PIN  
*
CHOKE LEVER  
O-RING  
HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10) — PAGE 37  
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HS81A CUT-OFF SAW V-BELT COVER (CLUTCH SIDE) ASSY.  
V-BELT COVER (CLUTCH SIDE) ASSY  
PAGE 38 — HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10)  
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HS81A CUT-OFF SAW V-BELT COVER (CLUTCH SIDE) ASSY.  
V-BELT COVER (CLUTCH SIDE) ASSY.  
NO.  
25  
31  
34  
40  
41  
42  
43  
44  
PART NO.  
PART NAME  
V-BELT COVER, (CLUTCH SIDE)  
NUT  
WASHER  
SCREW  
SCREW  
GUARD, BELT INNER  
WASHER  
QTY.  
REMARKS  
HS52010430  
HS50010148R  
HS3833073  
HS3806021A  
HS3801037  
HS52010023  
HS3916008R  
HS006000300  
1
2
3
2
1
1
2
1
BUSHING  
HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10) — PAGE 39  
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HS81A CUT-OFF SAW V-BELT COVER (PULLEY) /BLADE GUARD ASSY.  
V-BELT COVER (PULLEY-SIDE)/BLADE GUARD ASSY.  
BLADE FLANGE  
INNER (LIP)  
10  
8
2
1
34  
5
14  
BLADE FLANGE  
OUTER (FLAT)  
6
13  
22  
34  
14  
20  
14  
46  
23  
12  
24  
28  
7
27  
4
36  
11  
12  
37  
35  
15  
21  
9
6
38  
39  
16  
47  
45  
17  
18  
26  
32  
33  
CLUTCH  
PULLEY  
34  
19  
29  
30  
PAGE 40 — HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10)  
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HS81A CUT-OFF SAW V-BELT COVER (PULLEY) /BLADE GUARD ASSY.  
V-BELT COVER (PULLEY-SIDE)/BLADE GUARD ASSY.  
NO.  
1
2
4
5
6
7
8
PART NO.  
PART NAME  
BLADE COVER 14-INCH  
SCREW ANDWASHER  
SPACER  
FLANGE, ARBOR (OUTER)  
SPACER  
QTY.  
1
1
1
1
2
1
3
REMARKS  
HS52010026  
HS52010177  
HS52010045  
HS018600235  
HS52010044  
HS018600019  
HS3806022  
SHAFT  
SCREW  
9
HS005000343  
HS018600236A  
HS018100029  
HS3035019  
HS093000020  
HS094000251  
HS52010039  
HS01860004A  
HS3918013  
WASHER  
1
1
1
2
1
5
1
1
1
1
17  
5
1
1
1
1
1
2
1
2
3
1
1
6
1
1
1
1
1
1
1
2
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
26  
27  
28  
29  
30  
32  
33  
34  
35  
36  
37  
38  
39  
45  
46  
47  
FLANGE, ARBOR (INNER)  
O-RING, BLADE GUARD SUPPORT  
BEARING  
SPACER  
NUT  
SPACER  
PULLEY, BELT  
WASHER  
SCREW  
PLATE  
SCREW  
ARM  
FLANGE  
LOCK, GUIDE BLADE GUARD  
GUIDE, BLADE GUARD  
KNOB, ADJUSTMENT GUIDE  
SCREW  
SUPPORT BLADE GUARD  
SCREW  
HS3806065  
HS52010305  
HS3806021A  
HS52012114  
HS52010043  
HS52010013  
HS52010396  
HS52010062A  
HS3802005A  
HS52010025A  
HS3801016  
HS3914010  
NUT  
V-BELT  
HS018100180  
HS52010022A  
HS3833073  
HS3806037A  
HS52010211  
HS52010046  
HS52010401  
HS52010036  
HS3833080  
COVER, V-BELT (PULLEY SIDE)  
WASHER  
SCREW  
GUARD  
BUSHING  
SCREW  
BELT ADJUSTER  
WASHER  
SCREW  
PLASTIC PIN  
HS3906019  
HS52010428  
HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10) — PAGE 41  
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HS81A CUT-OFF SAW — FUELTANK ASSY.  
FUEL TANK ASSY.  
PAGE 42 — HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10)  
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HS81A CUT-OFF SAW — FUELTANK ASSY.  
FUEL TANK ASSY.  
NO.  
4
5
6
8
PART NO.  
PART NAME  
BREATHER  
TUBE  
FITTING  
VALVE BODY  
TUBE  
QTY.  
REMARKS  
HS52010082  
HS093000448  
HS018500066  
HS018500096  
HS50010093  
HS099900090  
HS52022005  
HS4098377  
1
1
1
1
1
1
9
15  
16  
19  
28  
0-RING  
*
CAP, FUEL ............................................................. 1 ......... INCLUDES ITEM W/  
CLIP  
FILTER, FUEL  
*
1
1
HS50010218  
HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10) — PAGE 43  
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HS81A CUT-OFF SAW — LIFTING HANDLE AND ROLLER ASSY.  
LIFTING HANDLE AND ROLLER ASSY.  
PAGE 44 — HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10)  
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HS81A CUT-OFF SAW — LIFTING HANDLE AND ROLLER ASSY.  
LIFTING HANDLE AND ROLLER ASSY.  
NO.  
1
2
3
7
17  
18  
20  
21  
22  
23  
24  
25  
26  
27  
29  
30  
PART NO.  
PART NAME  
QTY.  
1
4
2
2
1
1
1
2
1
1
2
2
4
1
4
2
REMARKS  
HS52010047  
HS097000061A  
HS3072015  
HS3801020  
HS52020026  
HS3960087  
HS52010214  
HS018100317  
HS018100171A  
HS52010098  
HS3072015  
HS3801024  
HS52010066R  
HS097000485  
HS3833076  
HS3806035  
HANDLE  
SCREW  
WASHER  
SCREW  
GUARD, FUELTANK  
SCREW  
MAIN ROLLER SUPPORT UPPER  
SPACER, ROLLER SUPPORT LOWER  
ROLLER  
SUPPORT, ROLLER LOWER  
WASHER  
SCREW  
SHOCK ABSORBER  
FUEL TANK ASSY.  
WASHER  
SCREW  
HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10) — PAGE 45  
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HS81A CUT-OFF SAW THROTTLE LINKAGE ASSY.  
THROTTLE ASSY.  
PAGE 46 — HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10)  
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HS81A CUT-OFF SAW THROTTLE LINKAGE ASSY.  
THROTTLE ASSY  
NO.  
10  
11  
12  
13  
PART NO.  
PART NAME  
QTY.  
REMARKS  
HS52010092  
HS52010077  
HS097000028  
HS097000024  
HS3960040  
THROTTLE TRIGGER LEVER............................... 1 ......... INCLUDES ITEM W/ #  
THROTTLE LOCK LEVER  
SPRING  
COVER, HANDLE/TANK  
SCREW  
1
1
1
3
14  
38%  
39  
40#  
CAP, THROTTLE LINKAGE ................................... 1 ......... NOT SOLD SEPARATELY  
THROTTLE LINKAGE ............................................ 1 ......... INCLUDES ITEM W/ %  
PLATE .................................................................... 1 ......... NOT SOLD SEPARATELY  
HS52012044  
HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10) — PAGE 47  
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HS81A CUT-OFF SAW — FLYWHEEL COVER ASSY.  
FLYWHEEL COVER ASSY.  
PAGE 48 — HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10)  
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HS81A CUT-OFF SAW — FLYWHEEL COVER ASSY.  
FLYWHEEL COVER ASSY.  
NO.  
3
4
5
6
PART NO.  
HS005000361  
HS3833080  
HS004000142  
HS097000019C  
PART NAME  
WASHER, FLAT  
WASHER, LOCK  
NUT  
QTY.  
REMARKS  
1
1
1
1
FLANGE, STARTER  
HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10) — PAGE 49  
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HS81A CUT-OFF SAW — FLYWHEEL ASSY.  
FLYWHEEL ASSY.  
PAGE 50 — HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10)  
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HS81A CUT-OFF SAW — FLYWHEEL ASSY.  
FLYWHEEL ASSY.  
NO.  
PART NO.  
HS52010136R  
HS52012027  
PART NAME  
QTY.  
REMARKS  
1
FLYWHEEL................................................ 1 ......... INCLUDES ITEM W/  
*
2
PAWL SET  
1
*
HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10) — PAGE 51  
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HS81A CUT-OFF SAW — IGNITION COIL ASSY.  
IGNITION COIL ASSY.  
PAGE 52 — HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10)  
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HS81A CUT-OFF SAW — IGNITION COIL ASSY.  
IGNITION COIL ASSY.  
NO.  
PART NO.  
PART NAME  
SPRING SPARK PLUG  
CAP, SPARK PLUG  
CABLE WIRE  
WASHER  
WASHER  
SCREW  
COIL, IGNITION ASSY.............................. 1 ......... INCLUDES ITEMS W/  
CONNECTING LINK  
SWITCH, ON-OFF  
CABLE WIRE, ON-OFF SWITCH  
NUT  
PLATE, ON-OFF SWITCH  
QTY.  
REMARKS  
7
*
8
*
9
HS094600169  
HS094600097A  
HS052010362  
HS3916004  
1
1
1
2
2
2
10  
11  
12  
13  
15  
16  
17  
18  
19  
HS006000315  
HS094000227  
HS52010320R  
HS52010132  
HS094500497  
HS097000121A  
HS099900397  
HS004000438  
*
1
1
1
1
1
HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10) — PAGE 53  
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HS81A CUT-OFF SAW — AIR FILTER ASSY.  
AIR FILTER ASSY.  
PAGE 54 — HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10)  
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HS81A CUT-OFF SAW — AIR FILTER ASSY.  
AIR FILTER ASSY.  
NO.  
1
2
3
3A  
4
5
6
7
8
PART NO.  
PART NAME  
QTY.  
REMARKS  
HS52012024B  
HS330000010  
HS018600125  
HS099900778A  
HS018600056AR  
HS3802002A  
HS3049007  
FLANGE, PRE- FILTER, CAP  
O- RING, FLANGE PRE- FILTER  
FILTER, AIR (STANDARD)  
1
2
1
FILTER, AIR (WET CUTTING) .................. 1 ......... OPTIONAL  
FILTER, AIR INNER  
SCREW, FILTER SUPPORT  
O-RING  
SUPPORT, FILTER  
PRE- FILTER, FOAM  
TUBE  
GASKET, AIR FILTER LOWER  
GASKET, AIR FILTER BASE  
COVER, AIR FILTER LOWER  
SCREW, AIR CLEANER MTG.  
WASHER, AIR CLEANER MTG.  
COVER, AIR FILTER, UPPER  
GASKET, AIR FILTER COVER  
KNOB, AIR FILTER COVER  
COVER, AIR FILTER, LONG  
SCREW, AIR FILTER COVER  
1
3
1
1
1
1
1
1
1
3
3
1
1
1
1
2
HS52010014B  
HS52010451R  
HS015000100  
HS018600090A  
HS52010059  
HS52010016  
HS072700182  
HS3833073  
HS52012004A  
HS52010060  
HS52010041  
HS52010018A  
HS093000468A  
9
10  
11  
12  
13  
14  
20  
21  
22  
23  
24  
HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10) — PAGE 55  
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HS81A CUT-OFF SAW — CARBURETOR MOUNTING ASSY.  
CARBURETOR MOUNTINGASSY.  
PAGE 56 — HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10)  
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HS81A CUT-OFF SAW — CARBURETOR MOUNTING ASSY.  
CARBURETOR MOUNTING ASSY.  
NO.  
6
PART NO.  
PART NAME  
QTY.  
2
1
1
1
1
1
1
1
1
1
1
1
1
1
REMARKS  
HS3833073  
WASHER  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
52010120  
094600126  
SPRING  
TUBE  
SCREW  
SPRING, MANIFOLD  
MANIFOLD, OUTER  
FLANGE  
HS61052009B  
HS097000059A  
HS52010008A  
HS097000333  
HS3960057  
HS2318920B  
HS015000100  
HS52010189  
HS097000092A  
HS098000057  
HS098000010  
SCREW  
CARBURETOR ASSEMBLY  
FUEL LINE, CARBURETOR  
SCREW  
SCREW  
SUPPORT, CARBURETOR  
MANIFOLD, INNER  
HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10) — PAGE 57  
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HS81A CUT-OFF SAW — CARBURETOR ASSY.  
CARBURETOR ASSY.  
PAGE 58 — HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10)  
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HS81A CUT-OFF SAW — CARBURETOR ASSY.  
CARBURETOR ASSY.  
NO.  
PART NO.  
PART NAME  
THROTTLE VALVE  
SCREW  
CARBURETOR ASSY. .............................. 1 ......... INCLUDES ITEMS W/  
SPRING  
THROTTLE SHAFT  
STARTER SHAFT  
SCREW, ADJUST  
SCREW "L" CARBURETOR  
SCREW "H" CARBURETOR  
SPRING  
BUSHING  
SCREW  
COVER  
SCREW  
PIN  
SPRING  
BALL, CARBURETOR  
SCREW  
STARTER VALVE  
PLATE  
QTY.  
1
1
REMARKS  
1
*
2
*
3
HS52010019  
HS380000338  
HS2318920B  
HS097000161  
HS097000154  
HS097000155  
HS097000162  
HS2318761  
*
4
1
1
1
1
1
1
2
2
5
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
*
5
*
6
*
7
*
8
*
9
HS2318762  
*
10  
HS097000223  
HS097000224  
HS035000162  
HS52010007  
HS003300202  
HS035000169  
HS035000164  
HS006000325  
HS003300209  
HS035000151  
HS035000149  
HS097000160  
HS003300036  
HS097000157  
HS035000161  
HS097000220  
HS097000221  
HS380000272  
HS015400153  
*
11  
*
12  
*
13  
*
14  
*
15  
*
16  
*
17  
*
18  
*
19  
*
20  
*
21  
*
LEVER  
ELBOW CONNECT  
COVER  
22  
*
23  
*
24  
*
SCREW  
25  
*
KIT, REPAIR CARBURETOR  
KIT, GASKET CARBURETOR  
SEAL RING  
26  
*
27  
28  
WASHER  
HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10) — PAGE 59  
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HS81A CUT-OFF SAW — CRANKSHAFT / PISTON ASSY.  
CRANKSHAFT AND PISTON ASSY.  
PAGE 60 — HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10)  
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HS81A CUT-OFF SAW — CRANKSHAFT AND PISTON ASSY.  
CRANKSHAFT AND PISTON ASSY.  
NO.  
1
2
3
4
PART NO.  
PART NAME  
SPARK PLUG  
SCREW  
QTY.  
REMARKS  
HS3055118  
1
4
4
1
1
1
2
HS005100906A  
HS3833076  
WASHER  
HS52010067  
HS098000004  
HS094500007  
HS007201198  
HS098000033B  
HS50102012B  
HS097000010B  
HS006000010  
HS098000001  
HS094500028R  
HS094500004  
HS099900014  
HS097000132  
HS004900137B  
HS097000097  
HS52010030  
HS52010035  
HS52010034  
HS52010029R  
DECOMPRESSOR  
PISTON RINGS  
PISTON PIN  
5 #  
*
6
#
7 #  
*
RING, PISTON PIN  
*
8
9
PISTON ASSEMBLYW /RINGS ..................... 1 ..........INCLUDES ITEMS W /#  
CYLINDER ASSEMBLYW /PISTON .............. 1 ..........INCLUDES ITEMS W /  
GASKET, CYLINDER  
BEARING, UPPER CRANKSHAFT  
CRANKSHAFT  
KEY, CRANKSHAFT  
SEAL RING  
SEAL RING, CRANKSHAFT  
CLUTCH ASSEMBLY..................................... 1 ..........INCLUDES ITEMS W /  
SPRING, CLUTCH  
WASHER  
BEARING  
*
*
10  
13  
14  
15  
17  
25  
27  
1
1
1
1
1
1
+
29+  
1
1
1
1
1
32  
33$  
34  
35  
SPACER, CLUTCH DRUM  
BUSHING, CLUTCH DRUM  
CLUTCH DRUM ............................................ 1 ..........INCLUDES ITEMS W /$  
36  
HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10) — PAGE 61  
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HS81A CUT-OFF SAW WATER KIT ASSY.  
WATER KIT ASSY.  
PAGE 62 — HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10)  
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HS81A CUT-OFF SAW WATER KIT ASSY.  
WATER KIT ASSY.  
NO.  
PART NO.  
HS52012062  
HS52010121  
PART NAME  
QTY.  
REMARKS  
1
WATER KIT ASSY. .......................................................1.......... INCLUDES ITEMS W /  
*
2
*
3
*
4
*
5
*
6
*
7
*
FITTING, QUICK DISCONNECT  
1
PLASTICTIEWRAPS ..................................................8.......... NOT SOLD SEPARATELY  
HOSE CLAMP .............................................................1.......... NOT SOLD SEPARATELY  
SCREW, SOCKET HEAD CAPW/WASHER ...............1.......... NOT SOLD SEPARATELY  
HOSE, WATER ............................................................1.......... NOT SOLD SEPARATELY  
HS52010207  
VALVE, SHUT-OFF  
1
Items 3-6 are included with the  
Water Kit Assembly and cannot be  
purchased separately.  
NOTE  
HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10) — PAGE 63  
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HS81A CUT-OFF SAW — CART ASSY.  
PAGE 64 — HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10)  
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HS81A CUT-OFF SAW — CART ASSY.  
CART ASSY.  
NO.  
1#  
2#  
3#  
4
5#  
6#  
7
8
9
10#  
11  
12@+>  
13@  
14@+  
15  
16+  
17  
18  
19  
20%  
21%  
22  
23%  
24  
PART NO.  
PART NAME  
CAP  
GASKET  
FILTER  
QTY.  
REMARKS  
HS365100098A  
HS365100084B  
HS365000043  
HS52032003  
HS52030046  
HS52030047  
HS3049039  
HS52030043  
HS52030096  
HS3911013  
HS52030051  
HS3918013  
HS52030039  
HS3960080  
HS52030082  
HS52030018  
HS52030009  
HS52032009  
HS3806070  
HS3833080  
HS3806065  
HS3916016  
HS3933097  
HS52032011  
HS52030095  
HS52030055  
HS52030014  
HS3031027  
HS3916020  
HS52030080  
HS3049002  
HS52030035  
HS52030033  
HS52030076  
HS52032006  
HS52030032  
HS52030094  
HS099900110  
HS52030026  
HS52030060  
HS3933097  
HS52030054  
HS52032007  
HS52030098  
1
1
1
TANK, COMPLETE .................................... 1 ..............INCLUDES ITEMS W/#  
WASHER  
FITTING  
O-RING  
FITTING  
FRAME  
NUT  
HOSE  
WASHER  
KNOB  
1
1
1
1
1
2
1
2
4
3
SCREW  
WHEEL KIT ............................................... 1 ..............INCLUDES ITEMS W/+  
SPACER  
BRACKET  
1
1
HANDLE .................................................... 1 ..............INCLUDES ITEMS W/>  
SCREW  
WASHER  
SCREW  
WASHER  
NUT  
1
4
5
1
2
GUARD, COMPLETE ................................ 1 ..............INCLUDES ITEMS W/%  
25  
26  
27  
FRAME  
SCREW  
AXLE  
SPLIT-PIN  
WASHER  
1
1
1
4
4
28$  
29$  
30  
31#  
32  
33  
34#  
35  
36  
37  
38  
39  
WHEEL KIT ............................................... 2 ..............INCLUDES ITEMS W/$  
O-RING  
THROTTLE CABLE  
THROTTLE LEVER  
SIDE BAR  
BRACKET, COMPLETE  
KNOB  
HANDLE BAR  
GROMMET  
SHOCK ABSORBER  
BRACKET  
NUT  
CAP  
2
1
1
1
1
2
1
1
1
1
2
2
40  
41  
42  
43  
KNOB KIT .................................................. 3 .............. INCLUDES ITEMS W/@  
SUPPORT  
44  
1
HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10) — PAGE 65  
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HS81A CUT-OFF SAW TOOLS  
TOOLS  
PAGE 66 — HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10)  
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HS81A CUT-OFF SAW TOOLS  
TOOLS  
NO.  
1
PART NO.  
HS4191240  
00325  
PART NAME  
QTY.  
REMARKS  
TOOL KIT  
1
2
SMOKELESS 2-STROKE OIL....... 1 ............. CAN ONLY BE PURCHASED AS A CASE (QTY 48)  
SMOKELESS 2-STROKE OIL....... 1 ............. CAN ONLY BE PURCHASED AS A 6 PACK  
3
003256PAK  
HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10) — PAGE 67  
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HS81A CUT-OFF SAW — RECOMMENDED DIAMOND BLADES  
Recommended Diamond Blades  
For your Side Winder Saw  
12" x .125" x 1" - 20mm Arbor  
Material to Cut  
Economy  
12GPS  
12GPS  
12GPS  
12GPS  
12GPS  
Standard  
Premium  
12PDHS1  
12PDHS1A  
12PDHS1H  
12PDHS1  
12PDHS1A  
Supreme  
12PDHS2  
12PDHS2A  
12PDHS2H  
12PDHS2  
12PDHS2A  
12SBL  
12SBLA  
12SBL  
12SBL  
12SBLA  
14" x .125" x 1" - 20mm Arbor  
Material to Cut  
Economy  
14GPS  
14GPS  
14GPS  
14GPS  
14GPS  
Standard  
Premium  
14PDHS1  
14PDHS1A  
14PDHS1H  
14PDHS1  
14PDHS1A  
Supreme  
14PDHS2  
14PDHS2A  
14PDHS2H  
14PDHS2  
14PDHS2A  
14SBL  
14SBLA  
14SBL  
14SBL  
14SBLA  
PAGE 68 — HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10)  
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TERMS AND CONDITIONS OF SALE PARTS  
5. Parts must be in new and resalable  
condition, in the original Multiquip  
package (if any), and with Multiquip part  
numbers clearly marked.  
Multiquip reserves the right to quote and  
sell direct to Government agencies, and to  
Original Equipment Manufacturer accounts  
who use our products as integral parts of their  
own products.  
PAYMENT TERMS  
Terms of payment for parts are net 30 days.  
FREIGHT POLICY  
6. The following items are not returnable:  
All parts orders will be shipped collect or  
prepaid with the charges added to the invoice.  
All shipments are F.O.B. point of origin.  
Multiquip’s responsibility ceases when a  
signed manifest has been obtained from the  
carrier, and any claim for shortage or damage  
must be settled between the consignee and  
the carrier.  
a. Obsolete parts. (If an item is in the  
price book and shows as being  
replaced by another item, it is  
obsolete.)  
SPECIAL EXPEDITING SERVICE  
A $35.00 surcharge will be added to the  
invoice for special handling including bus  
shipments, insured parcel post or in cases  
where Multiquip must personally deliver the  
parts to the carrier.  
b. Any parts with a limited shelf life  
(such as gaskets, seals, “O” rings,  
and other rubber parts) that were  
purchased more than six months  
prior to the return date.  
LIMITATIONS OF SELLER’S LIABILITY  
MINIMUM ORDER  
Multiquip shall not be liable hereunder for  
damages in excess of the purchase price of  
the item with respect to which damages are  
claimed, and in no event shall Multiquip be  
liable for loss of profit or good will or for any  
other special, consequential or incidental  
damages.  
The minimum charge for orders from Multiquip  
is $15.00 net. Customers will be asked for  
instructions regarding handling of orders not  
meeting this requirement.  
c. Any line item with an extended  
dealer net price of less than  
$5.00.  
d. Special order items.  
RETURNED GOODS POLICY  
e. Electrical components.  
f. Paint, chemicals, and lubricants.  
g. Decals and paper products.  
h. Items purchased in kits.  
Return shipments will be accepted and  
credit will be allowed, subject to the following  
provisions:  
LIMITATION OF WARRANTIES  
No warranties, express or implied, are  
made in connection with the sale of parts or  
trade accessories nor as to any engine not  
manufactured by Multiquip. Such warranties  
made in connection with the sale of new,  
complete units are made exclusively by a  
statement of warranty packaged with such  
units, and Multiquip neither assumes nor  
authorizes any person to assume for it  
any other obligation or liability whatever in  
connection with the sale of its products. Apart  
from such written statement of warranty,  
there are no warranties, express, implied or  
statutory, which extend beyond the description  
of the products on the face hereof.  
1. A Returned Material Authorization  
must be approved by Multiquip prior to  
shipment.  
7. The sender will be notified of any material  
received that is not acceptable.  
8. Such material will be held for five  
working days from notification, pending  
instructions. If a reply is not received  
within five days, the material will be  
returned to the sender at his expense.  
2. To obtain a Return Material Authorization,  
a list must be provided to Multiquip  
Parts Sales that defines item numbers,  
quantities, and descriptions of the items  
to be returned.  
9. Credit on returned parts will be issued  
at dealer net price at time of the original  
purchase, less a 15% restocking  
charge.  
a. The parts numbers and descriptions  
must match the current parts price  
list.  
b. The list must be typed or computer  
generated.  
10. In cases where an item is accepted, for  
which the original purchase document  
can not be determined, the price will be  
based on the list price that was effective  
twelve months prior to the RMA date.  
c. The list must state the reason(s)  
for the return.  
Effective: February 22, 2006  
d. The list must reference the sales  
order(s) or invoice(s) under  
which the items were originally  
purchased.  
11. Credit issued will be applied to future  
purchases only.  
PRICING AND REBATES  
e. The list must include the name  
and phone number of the person  
requesting the RMA.  
Prices are subject to change without prior  
notice. Price changes are effective on a  
specific date and all orders received on or  
after that date will be billed at the revised price.  
Rebates for price declines and added charges  
for price increases will not be made for stock  
on hand at the time of any price change.  
3. AcopyoftheReturnMaterialAuthorization  
must accompany the return shipment.  
4. Freight is at the sender’s expense. All  
parts must be returned freight prepaid to  
Multiquip’s designated receiving point.  
HS81A CUT-OFF SAW — OPERATION & PARTS MANUAL — REV. #2 (07/26/10) — PAGE 69  
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OPERATION AND PARTS MANUAL  
HERE’S HOW TO GET HELP  
PLEASE HAVE THE MODEL AND SERIAL  
NUMBER ON-HAND WHEN CALLING  
UNITED STATES  
Multiquip Corporate Office  
MQ Parts Department  
18910 Wilmington Ave.  
Carson, CA 90746  
Contact: mq@multiquip.com  
Tel. (800) 421-1244  
Fax (800) 537-3927  
800-427-1244  
310-537-3700  
Fax: 800-672-7877  
Fax: 310-637-3284  
Mayco Parts  
Warranty Department  
800-306-2926  
310-537-3700  
Fax: 800-672-7877  
Fax: 310-637-3284  
800-421-1244, Ext. 279  
310-537-3700, Ext. 279  
Fax: 310-537-1173  
Fax: 310-631-5032  
Service Department  
Technical Assistance  
800-421-1244  
310-537-3700  
Fax: 310-537-4259  
800-478-1244  
MEXICO  
UNITED KINGDOM  
MQ Cipsa  
Multiquip (UK) Limited Head Office  
Carr. Fed. Mexico-Puebla KM 126.5  
Momoxpan, Cholula, Puebla 72760 Mexico  
Contact: pmastretta@cipsa.com.mx  
Tel: (52) 222-225-9900  
Fax: (52) 222-285-0420  
Unit 2, Northpoint Industrial Estate, Tel: 0161 339 2223  
Fax: 0161 339 3226  
Global Lane,  
Dukinfield, Cheshire SK16 4UJ  
Contact: sales@multiquip.co.uk  
CANADA  
Multiquip  
4110 Industriel Boul.  
Laval, Quebec, Canada H7L 6V3  
Contact: jmartin@multiquip.com  
Tel: (450) 625-2244  
Tel: (877) 963-4411  
Fax: (450) 625-8664  
© COPYRIGHT 2010, MULTIQUIP INC.  
Multiquip Inc and the MQ logo are registered trademarks of Multiquip Inc. and may not be used, reproduced, or altered without written permission. All other trademarks are the property  
of their respective owners and used with permission.  
This manual MUST accompany the equipment at all times.This manual is considered a permanent part of the equipment and should remain with the unit if resold.  
The information and specifications included in this publication were in effect at the time of approval for printing. Illustrations, descriptions, references and technical data contained in  
this manual are for guidance only and may not be considered as binding. Multiquip Inc. reserves the right to discontinue or change specifications, design or the information published  
in this publication at any time without notice and without incurring any obligations.  
Your Local Dealer is:  
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