Husqvarna Brush Cutter SC18 968981201 User Manual

Operators manual  
Models:  
Please read these instructions carefully and make  
sure you understand them before using the machine.  
SC18/968981201  
SC18/968999352  
MANUAL NO. 540200156 REV. 01 (12/01/05)  
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FEATURES AND CONTROLS  
Oil used in the engine (gray cap) 1. Refer to your engine manual for oil type, viscosity, weight  
and capacity.  
Oil used in the Clutch/Gear Box 1. Refer to your engine manual for oil type, viscosity, weight  
and capacity. Reducer (yellow cap)  
Transmission grease used  
1. You should not need to service the transmission. Call  
Tecumseh or your servicing dealer if needed.  
2. Transmission is located directly behind the front axle  
underneath the engine.  
3. There is no dipstick for transmission.  
4. Tecumseh Bentonite Grease part #788067B or equivalent.  
3
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OPERATING INSTRUCTIONS  
GENERAL INFORMATION  
This manual will assist you in the safe operation and proper maintenance of your Husqvarna equip-  
ment. Read it thoroughly before attempting to operate the machine. Do not hesitate to call your  
dealer or Husqvarna if additional information is required.  
The following safety symbols are used throughout the manual to alert you to information about  
unsafe actions or situations:  
DANGER: indicates immediate hazards that may result in severe injury or death.  
WARNING: indicates unsafe actions or situations that may cause severe injury, death and or major  
equipment or property damage.  
CAUTION: indicates unsafe actions or situations that may cause injury and/or minor equipment or  
property damage.  
This equipment should not be modified without the manufacturer’s prior written authorization. Doing  
so without our written permission may not only affect the equipments performance and durability, but  
also create safety hazards for the operator and the surroundings. Warranty will be void if changes  
are made to the equipment without the manufacturer’s prior written authorization.  
SAFETY PROCEDURES  
DO:  
• Only start with shift lever in neutral.  
• Read all maintenance and service instructions before attempting work.  
• Follow engine manufacturer operating and maintenance instructions.  
• Inspect area to be cut and remove rocks, wire, string and other objects that might present hazard  
before starting.  
• Identify and mark all in ground objects to be avoided, such as sprinkler heads, stakes, water  
valves, clothes line anchors, etc.  
• This machine was designed for sod cutting only. It is not intended for any other use.  
DO NOT:  
• Do not start in gear.  
• Do not cut at high transport speeds.  
• Do not use on any surface other than grass.  
• Do not operate on slopes exceeding 35% grade.  
• Do not place hands or feet near moving or rotating parts.  
• Do not run engine in an unventilated area.  
• Do not shift with throttle engaged.  
• Do not run engine while servicing. Remove spark plug wire before servicing.  
• Do not remove guards when operating.  
• Do not lift this 330 lb. machine.  
OPERATOR’S TIPS  
To engage reverse gear you may have to push the machine back and forth while pulling the shift  
lever.  
• Stop before shifting gears.  
• Cut going down hill on unlevel ground.  
• End cuts by pushing the blade engagement lever forward while still holding the throttle to cut the  
end of the sod strip as the blade rises.  
• Soil conditions will effect cutting depth Readjusting the blade depth may be required as you move  
from hard soil to soft or moist soil conditions.  
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OPERATING INSTRUCTIONS  
• Do not attempt sharp turns while cutting.  
• Should I water before cutting?  
It is usually not necessary to water before cutting. In extreme conditions, such as clay soil that is  
very compacted, a simple test as follows will determine if you need to water before cutting. Use a  
garden hand spade, weed tool, or even a large screwdriver to test the ground’s hardness. You  
should be able to push the tool into the ground 2 to 3 inches with little effort.  
If you are unable to do so, then watering may be advisable. Watering the day before should give  
sufficient time for the soil to absorb the moisture. Use your hand tool to gauge the effectiveness of  
your watering. Allow the grass to dry before cutting to provide adequate traction for sod cutting.  
OPERATING ON HILLS  
WARNING - DO NOT operate on hills exceeding 35% grade to prevent machine from rolling over.  
Please be aware that when operating on hills, you may experience:  
• The need to exert greater effort to steer and maintain the balance of the machine.  
• Uneven cutting depth, when operating across a hill. The shifted center of gravity may cause the  
downhill side of the blade to penetrate to the maximum depth, while the uphill side may not.  
With these factors in mind, you may find it more effective to:  
• Operate the machine cutting down rather than across hills. You will achieve even cutting depth, and  
enhance stability.  
• Avoid hill side turns. Back up hills in reverse gear, then cut, going down.  
BEFORE YOU START  
• Read and understand this manual.  
• Be sure engine oil is at engine manufacturer’s recommended level. (Refer to engine  
manufacturer’s manual.)  
• Put the sod cutter into neutral before starting.  
• Place blade in transport position before starting.  
TRANSPORTING  
• Push the blade engagement lever forward to raise the blade.  
• Select the desired gear (slow-fast-reverse).  
• Pull the throttle while maintaining a firm grip on the handlebar.  
To make turns, push down on the handlebar to do “a wheelie,” then turn.  
• Load into truck or trailer by driving up ramps in low gear. DO NOT LIFT! This 330lb machine is not  
intended to be lifted by hand.  
SOD CUTTING See Figure - Page 3  
1. Position the sod cutter at your starting point with the blade out of the ground.  
2. Pull the blade engagement lever toward you with one hand while lifting the handlebar with the  
other hand.  
3. Place the shift lever in slow gear (turtle icon).  
4. Pull the throttle while maintaining a slight down pressure on the handlebar and cut a short  
distance, then stop. Put shift lever in neutral.  
5. Lift the edge of the sod to check the cut depth.  
6. To change the depth, push the blade engagement lever forward, unlock the depth lock knob (red  
knob), and turn the depth adjustment knob clockwise for less depth, or counterclockwise for  
more depth; then lock the depth lock knob.  
7. Repeat steps 2 through 6 as necessary to set depth of cut.  
8. End cuts by pushing the blade engagement lever forward while holding the throttle to cut the end  
of the sod strip as the blade exits the ground.  
5
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SAFTEY AND MAINTENANCE  
CAUTION  
Any modifications or additions to this equipment without written authorization from the manufacturer  
will void all manufacturer’s warranties.  
Do not operate this machine without first reading owners manual.  
CAUTION  
Husqvarna parts have been designed and specified to meet commercial operating standards for  
strength and durability. For reliability and preservation of design safety standards, replacements  
should only be made with genuine Husqvarna parts or material of equivalent type and strength.  
TWO MINUTE WARNING  
Sod Cutters may be tipped on their engine guard for cleaning and access for no more than 2  
minutes. Engine damage may result from gasoline draining into the crankcase if prolonged. See  
engine manufacturer’s operating and maintenance instructions.  
ENGINE SERVICE AND WARRANTY  
Contact your nearest engine manufacturers authorized servicing dealer for engine service and  
warranty questions. Follow the engine manufacturers maintenance instructions. Should any mal-  
function occur with the engine during the warranty period, take it to an Authorized Service Dealer.  
DO NOT tear down the engine, as this may void the Engine Manufacturer’s Warranty.  
PREVENTATIVE MAINTENANCE SCHEDULE  
A) Inspection Schedule  
Item  
Each Use  
Every 20 hrs  
• Engine Oil (see engine manual)  
• Clutch Tension  
• Chain Tension  
• Decals and Warnings  
• Fasteners and fittings  
• Throttle cable  
X
X
X
X
X
X
• Blade condition and wear  
• Frame condition (rust, cracks, etc.)  
• Clutch and cable  
X
X
X
• Excessive vibration  
• Engine air cleaner (see engine manual)  
• Depth adjuster  
X
X
X
B) Lubrication Schedule  
Item  
Lubricant  
Every 20 hrs  
Every 60 hrs  
As Required  
Storage  
• Engine Oil, see engine  
owner’s manual  
X
X
X
• Chain  
30W Motor oil or  
Chain lubricant  
30W oil  
X
X
X
X
• Linkage  
• Grease depth  
adjust screw  
X
X
X
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SERVICE AND MAINTENANCE  
BLADE WEAR  
Sod cutter blades may wear quickly depending on soil condition. Replace blade when worn to 1 1/2”  
(3.8cm) or less. Maintain lower blade surface.  
CLEANING AND WASHING  
Regular cleaning and washing will prolong the service of your machine.  
Note: Use care with power washers to avoid damage to Warning Decals, Operator Instruction  
Labels, Bearings, Chain and Engine. Avoid direct spray on these items. DO NOT EXCEED 1000  
PSI WATER PRESSURE FOR CLEANING.  
ADJUSTING CHAIN TENSION  
Upper Chain  
• No adjustment is required  
Lower Chain  
• Remove chain guard  
• Tilt the sod cutter forward onto the front weight.  
• Tighten the 1/2” lock nut on the chain idler until the #40 chain flexes approximately 1/4” ( 6mm) at  
mid span.  
• Install chain guard.  
• Set sod cutter back to level.  
STORAGE  
1. Refer to engine manufacturer’s instructions for engine storage information.  
2. Clean machine.  
3. Cover all scratches with touch up paint.  
4. Lubricate according to Lubrication Schedule (see page 6).  
5. Lightly oil or mil board paint blade to inhibit rust.  
6. Covered or indoor storage is recommended.  
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TROUBLESHOOTING  
PROBLEM  
ANSWER/COMMENT  
Transmission shaft broke  
1. Ensure debris is not caught in the Transmission Chain or  
wrapped around the transmission output shaft.  
2. Ensure the unit has a Skid Pan installed.  
3. Contact your servicing dealer.  
Drive wheels won’t engage  
1. Ensure the Drive Chain is on all sprockets.  
2. Ensure the Transmission Chain is on all sprockets.  
3. Ensure the Chain Idler Spring is attached.  
4. Check for side play in the Transmission Output Drive  
Sprocket (If there is side play, the transmission could be  
damaged).  
5. Verifiy the Shift Linkage is attached at the Shift Lever and at  
the Bell Crank and Rod End is attached at Bell Crank and  
Transmission Arm.  
6. Check sprockets for proper alignment.  
Unit jumps out of gear  
1. Adjust Shift linkage. Tighten Shift Lever Pivot Bolt to hold  
shift lever in place.  
Bushings on depth control assembly1. The bushings are wearable items.  
are wearing quickly. 2. Grease (polyurethane compatible) ID and OD of bushings  
before installing.  
3. Ensure that proper Blade Lift Springs are installed.  
(Springs have 1.5-inch OD.)  
4. Be sure the maximum RPM is set correctly at 3000. See  
Technical Bulletin Throttle Cable Adjustment.  
5. Be sure red bushings are installed.  
Bushings “ooze out” when installed 1. This is normal. Trim with knife if desired.  
Right Angle T-drive leaking  
1. Contact your local Tecumseh dealer or servicing dealer.  
What RPM should my  
engine be set to?  
1. 3000 RPM maximum.  
See Technical Bulletin “Throttle Cable Adjustment.”  
Chain (Transmission) wearing  
prematurely or coming off  
The Transmission Input Sprocket is a fixed (non adjustable)  
sprocket which is splined and snap-ringed in place.  
1. Align the Engine Sprocket and Chain Idler Sprocket to the  
Transmission Input Sprocket (fixed)  
2. Idler Sprocket position is adjusted by adding or subtracting  
washers between the sprocket and the idler arm.  
3. The Engine Sprocket is adjusted by sliding it on the engine  
output shaft.  
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TROUBLESHOOTING  
PROBLEM  
ANSWER/COMMENT  
Chain (Drive) is coming off,  
drive sprocket wearing  
The Transmission Output Sprocket is a fixed (non adjustable)  
sprocket which is splined and snap-ringed in place.  
1. Align the Axle Sprockets (double set screws) to the  
Transmission Output Sprocket. Position the Axle  
the same distance from the chassis wall.  
Sprockets  
2. Replace the Tensioner Sprocket if it has a bent or twisted  
bracket or bent teeth.  
3. Check chain tension between Axle Sprockets (1/4” - 3/8”  
deflection at mid-span).  
Pulleys not staying tight or coming 1. Inspect shaft, pulleys and keys for damage. Note:Gear box  
off.  
pulley has double set screws.  
2. Replace any damaged parts.  
3. Use blue loctite on the set screws.  
Blade Replacement  
1. Replace when worn to 1 1/2” from the cutting edge to the  
back edge.  
2. Sharpen blade from top only. Maintain a flat lower surface.  
3. Sharpen sides of blades from outside only.  
Blade doesn’t move or stops cutting 1. If the operator tries to cut deeper than 2 1/2”, pivoting the  
machine back on its rear wheels while cutting can cause  
machine to cut too deeply.  
2. Make sure the blade is sharp.  
3. Moisture, oil or grease on the belt will cause it to slip.  
Replace with a Husqvarna belt.  
4. Tension can be increased by tightening the Cable Tension  
Nut. If additional adjustment is not available, add a 1/2”  
stack of washers between Tension Nut and Cable Bracket.  
5. IMPORTANT: Engine must be off before checking  
clearance of pulleys. Adjust tap bolt for 1/8” to 1/4”  
clearance between all pulleys, Belt Idler Pulley, Engine  
Pulley, Right Angle Drive Pulley, with the belt removed.  
Lock  
adjustment with jam nut.  
Blade not cutting full depth  
or inconsistent depth  
1. Replace the Depth Control Bushings when worn.  
2. Be sure the Depth Control Rod is installed properly. See  
Technical Bulletin “Installation of Depth Adjuster Assembly  
Control.  
3. If blade is dull or improperly sharpened, sharpen it from top  
only (see page 7) or replace.  
4. Check to see if the cutting surface is uneven  
5. Replace the Blade Lift Springs when worn or broken.  
9
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TROUBLESHOOTING  
PROBLEM  
ANSWER/COMMENT  
Blade not disengaging  
New Unit or New Belt:  
1. Run the machine with the blade engaged until the belt  
stretches.  
Used Unit or Old Belt:  
1. Adjust the Belt Keeper so each leg touches when idler  
pulley is not engaged and so idler pulley clears Belt Keeper  
when engaged.  
2. Be sure the correct Husqvarna belt is being used. If not,  
replace with a Husqvarna belt.  
3. Belt Idler Pivot Bolt may be too tight or need lubrication.  
4. Belt Idler Return Spring may be broken or came off  
anchors. Reattach or replace as necessary.  
5. Check to see if the Tension Cable is out of pulley. Install  
cable in pulley and squeeze bracket sides to minimize  
the gap to pulley.  
Belt coming off  
1. RPM may be too high. Set to 3000 RPM See Technical  
Bulletin “Throttle Cable Adjustment.”  
2. Align pulleys. See Technical Bulletin “Inspection Procedure  
for Belt Tension “.  
3. Replace the Belt Idler Pulley Arm if it is bent.  
Belt glazed or slipping  
1. Limit maximum depth of cut to 2 1/2”.  
2. Be sure the updated Blade Lift Springs are installed.  
(Springs have 1.5 inch OD.)  
3. If the Blade Lift Springs are worn they will allow the blade to  
cut too deeply, which causes the belt to slip. Replace if  
necessary.  
4. Be sure the maximum RPM is set at 3000. See Technical  
Bulletin “Throttle Cable Adjustment.”  
5. Be sure the correct Husqvarna belt is being used. If not,  
replace with a Husqvarna belt.  
6. Check if belt is being stretched by comparing with a new  
belt.  
7. Check to see if the Tension Cable is out of pulley. Install  
cable in pulley and squeeze bracket sides to minimize the  
gap to pulley.  
8. If the Gear Box Pulley or the Engine Pulley is wet, oily, or  
damaged, clean or replace.  
9. Belt tension can be increased by tightening the Cable  
Tension nut. If additional adjustment is unavailable, add a  
1/2” stack of washers between Tension Nut and Cable  
Bracket.  
10  
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TROUBLESHOOTING  
PROBLEM  
ANSWER/COMMENT  
Belt glazed or slipping  
10. Be sure the Belt Idler Assembly is adjusted correctly.  
See Technical Bulletin “Inspection Procedure for Belt  
Tension.”  
11. Important: Engine must be off before checking  
clearance of pulleys. Adjust tap bolt for 1/8” to 1/4”  
clearance between all pulleys, Belt Idler Pulley, Engine  
Pulley, Right Angle Drive Pulley with belt removed. Lock  
adjustment with jam nut.  
Depth Control Rod broke  
1. Contact Action Center to order Depth Control Rod  
Assembly and two red bushings.  
Depth Control Rod  
will not turn (frozen)  
1. Steam cleaning machines without lubricating threads  
afterwards will cause rust resulting in locked threads.  
2. Note that the Rod End is a left-handed thread.  
3. Flood frozen joints with penetrating oil.  
Unit is creeping  
The transmission contains a centrifugal clutch and may creep  
if left in gear. Some creeping is normal because of the lubricant  
resistance between the clutch plates. Also, too heavy a  
lubricate in Gear Reducer can cause creeping.  
1. Put in neutral - unit will not creep.  
2. RPM at idle should be 1,400 (+200/-150). Clutch will en  
gage at 1,800 RPMs. A high idle RPM may cause creeping.  
3. If unit continues to creep, contact your local Honda dealer  
or servicing dealer.  
Handle Stand Off Kit -  
how to tighten bolts  
1. Remove rubber bushings.  
2. Remove bolt.  
3. Apply blue loctite.  
4. Hold stand off with pliers, vice-grips, etc. and tighten  
bolt.  
Bolts breaking  
1. The vibration of the machine may cause bolts to come  
loose. Check and tighten all bolts periodically.  
2. Use Grade 8 bolts with lock nuts to bolt wheels to axle.  
Tires wearing too quickly  
1. Only cut in first or second gear.  
2. Tire wear is normal and to be expected. Running the  
machine on excessively hard or abrasive surfaces can  
increase wear.  
11  
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SOUND AND VIBRATION STATMENT  
12  
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This page left black intentionally  
13  
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Technical assistance:  
For technical assistance please contact your Local Dealer.  
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