OPERATOR’S
MANUAL
Chipper/Shredder
5/14 Series
Mfg. No.
85637
1692203
1692352
1692722
9050100
Description
Model SAC55140BV, 5HP Chipper Shredder
Model 5/14, 5HP Chipper Shredder
Model 5/14, 5HP Chipper Shredder (Export)
Model 5/14, 5HP Chipper Shredder (Export)
Model 5/14, 5HP Chipper Shredder
8/14 Series
Mfg. No.
1692330
1692568
1692331
Description
Model 8/14, 8HP Chipper Shredder
Model 8/14, 8HP Chipper Shredder (Export)
Model 8/14, 8HP Chipper Shredder
1713249-04
(Supercedes 1713250)
Rev. Date 9/2003, Revision No.04
TP 100-2167-04-CS-SBN
Safety Rules
Safe operation of the chipper/shredder unit requires that
all operating and safety instructions be obeyed by every-
one who uses, services, or otherwise handles the unit.
GENERAL
The Safety Alert symbol shown here is used to alert
you to important safety information that must be
read, fully understood, and followed at all times when
handling, transporting, operating, servicing, or storing
your chipper/ shredder unit.
Although the instructions and warnings appearing in this
manual cover most normal operating conditions, every-
one using the chipper/shredder unit must also always fol-
low safe work practices while operating, servicing, or
handling the chipper/shredder unit under any conditions
not specifically covered in this manual.
Each safety alert symbol is followed by a “signal word”
that advises you of the relative intensity, or level, of the
hazard the safety alert instructions pertain to.
SETTING UP
The following list of signal words is being provided to
help you understand the intensity levels associated with
each signal word used in this manual.
1. Although most assembly has been done at the facto-
ry, your chipper/shredder unit requires minor assem-
bly and the addition of engine oil before it can be
used. Never attempt to start or operate the unit
unless the chipper cone and shredder hopper have
been properly installed and engine oil has been
added.
DANGER
The signal word “DANGER” is used when a seri-
ous injury or fatality will result if the safety
instructions that follow this signal word are not
obeyed.
2. Perform the required assembly in an area where the
chipper/shredder can be handled comfortably. Never
attempt to assemble the unit unless the engine/base
assembly can be held or securely positioned for
assembly needs.
WARNING
The signal word “WARNING” is used when a
serious injury or fatality could result if the safety
instructions that follow this signal word are not
obeyed.
3. Use proper hand tools for assembling the
chipper/shredder. Never use tools such as
adjustable open-end wrenches that can slip off hard-
ware as it’s being fastened. Never use toothed grip-
ping pliers which may damage hardware and make
removal difficult.
CAUTION
The signal word “CAUTION” is used when per-
sonal injury, or property or equipment damage
could result if the safety instructions that follow
this signal word are not obeyed.
4. Always use only the hardware provided with this unit
for assembly. Never substitute parts, or mix the
proper position of parts during assembly. If a part is
missing, contact your local dealer for an exact
replacement.
DANGER
You must read and understand this manual and
all safety instructions and labeling completely,
before attempting to assemble, set-up, trans-
port, operate, service, or install any options or
accessories on this unit.
5. Assemble the unit in the sequence indicated in the
assembly instructions. Make sure all hardware is
properly tightened after assembly is completed and
before starting the unit.
This chipper/shredder is a powerful machine
designed for chipping of tree limbs and branch-
es up to 2-1/2" in diameter (3" on Model 8/14),
and is capable of amputating or causing serious
injury to fingers, hands, feet, and other extremi-
ties if accidental contact with rotating chipper
and shredder blades should occur.
6. Make sure all required hardware has been installed.
Never attempt to start or operate the unit unless you
are sure that all required hardware has been used.
7. Inspect the shredder hopper and chipper cone for
any debris, loose hardware, or other material that
may have fallen in during unpacking and assembly.
Always disconnect the spark plug wire from the spark
plug, before removing any objects.
Always keep hands, feet, and other extremities
out of the shredder hopper, chipper cone, and
discharge area, and never wear loose fitting
clothing or jewelry that could get caught on tree
limbs, branches, or rotating parts, and pull your
hands, or other body parts into the rotating chip-
per/shredder blades.
8. Never fill the fuel tank indoors! Gasoline vapors are
explosive, and can easily travel unnoticed to sources
of ignition, such as pilot lights or open flames on
water heaters, furnaces, stoves, or dryers, sparks
from electric motors and other electrical appliances,
2
Safety Rules
or unattended smoking materials. Contact with these
or any other ignition sources will cause an explosion
or fire, serious personal injury, and damage to prop-
erty and equipment.
DANGER
SPARK/FIRE HAZARD
GAS ENGINES MAY REQUIRE
A SPARK ARRESTER FOR SAFE OPERATION
9. Never overfill the fuel tank. Fuel may run out of the
tank and contact hot surfaces on the chipper/shred-
der motor and ignite, causing a fire and/or risk of an
explosion. Fill fuel tank to 1/2” below bottom of filler
neck only.
If the engine on this unit is not equipped with a
spark arrester and is to be used on any forest,
brush, or grass-covered unimproved land, a
spark arrester must be added to the muffler
before using the engine on such land. The
arrester must be maintained in effective working
order by the operator. In the State of California,
the above is required by law (Section 4442 of the
California Public Resources Code.) Other states
may have similar laws. Federal laws apply on
federal lands. See your authorized engine ser-
vice center for muffler spark arrester options.
10. Use only an approved container for fuel and always
handle the container with extreme care. Never smoke
while fueling the chipper/shredder or transporting the
fuel container.
11. Never store the fuel container or chipper/shredder
indoors where there is a possibility of contact with
any ignition source such as a spark, open flame, pilot
light, heating element, or smoking materials.
12. Never attempt to operate a unit indoors or in an
enclosed area. Engine exhaust contains Carbon
Monoxide, an odorless, colorless, and tasteless gas.
If inhaled, Carbon Monoxide can cause dizziness,
nausea, unconsciousness, and brain damage or
death if contact is allowed to continue.
SAFE WEARING APPAREL
1. Always wear safety goggles to protect your eyes from
flying debris when operating the chipper/shredder.
One pair of safety goggles has been provided with
the unit for your immediate use. All others in and
around the immediate area must also wear approved
safety glasses to protect their eyes from flying debris.
OPERATING LOCATION
2. Wear hearing protection when the chipper/ shredder
is to be used for prolonged periods of time, or when-
ever noise reaches an uncomfortable level.
1. Always operate the chipper/shredder outdoors only,
on a firm, level, earthen or grassy area where the unit
will be stable and will stay in position. Never attempt
to operate the unit on a slope, or on wet or slippery
surfaces where you could slip and fall toward the
chipper cone or hopper openings.
3. When wearing work gloves, always wear only proper-
ly fitted leather work gloves to protect your hands
from cuts and scratches caused by tree limbs and
branches. Never wear gloves with pull-ties or straps,
as these could get entangled with branches and draw
your hands into the chipper cone or shredder hopper
cutting areas.
2. Never operate the chipper/shredder on asphalt, con-
crete, or other hard or paved surfaces, as material
being ejected out of the discharge chute could rico-
chet, causing injury to you or bystanders in the imme-
diate area.
4. Never wear loose fitting clothing, hanging jewelry,
ties, scarves, or other items that could get caught on
tree limbs, branches, or moving parts, and draw your
body parts into the cutting areas of the chipper cone
and shredder hopper.
3. Never operate the chipper/shredder where children,
pets, or others who may be unaware of the potential
hazards associated with chipping and shredding
operations could enter the area unexpectedly and be
exposed to these hazards.
5. Always tie up long hair and prevent it from hanging
down, where it could become tangled in branches or
get caught in rotating parts and pull you into the cut-
ting areas.
4. Never operate the chipper/shredder on rocky or grav-
el covered surfaces, as this surface debris could
enter the unit and cause extensive damage, or be
ejected out of the machine with sufficient force to
cause a serious injury to you or bystanders.
6. Even if you are wearing heavy-duty leather work
gloves, never, ever place your hands in the chipper
cone or shredder hopper while the unit is running. If
you must reach in to clear a jam or free up branches,
shut the unit off, disconnect the spark plug wire at the
spark plug, and carefully remove or clear the jammed
material.
5. Never operate the chipper/shredder in an area where
sparks from the muffler could ignite surrounding
brush or flammable materials. See following Fire
Hazard Warning!
3
Safety Rules
• Check the oil level in the engine crankcase. See
ENGINE OIL LEVEL under Servicing The
Chipper/Shredder.
OPERATING SAFETY
1. Always obey the size limitations for tree limbs and
branches stated in the Waste Materials Guide portion
of this manual.
11. Never attempt to clear clogs from the chipper cone,
shredder hopper or discharge chute while the unit is
running. Always shut the engine off, allow the rotor
to come to a complete stop, and remove the spark
plug wire from the spark plug before removing excess
materials.
2. Never leave the machine running unattended.
Always turn off the engine, wait for the rotor to come
to a complete stop, and disconnect the spark plug
before leaving the area. Always move the unit to a
safe storage area when not in use.
12. Never fill the fuel tank while the machine is running or
while the engine is hot. An unexpected spillover of
fuel could contact a hot surface and ignite, causing
fire or explosion. Turn off the engine, and allow the
engine to cool before attempting refilling.
3. Always maintain secure footing and solid balance
while starting or operating the chipper/shredder.
Never lean directly over the machine.
4. Always stand to the side of the chipper cone when
feeding tree limbs and branches into the unit, as tree
limbs, branches, and harder woods may whip around
while being chipped.
13. Never attempt to perform any maintenance, repairs,
or attachment of accessories while the unit is run-
ning. Always shut the unit off, allow the rotor to come
to a complete stop, and remove the spark plug wire
from the spark plug before beginning these activities.
5. Always keep hands out of the chipper cone and
shredder hopper when feeding materials. Never
wrap fingers tightly around branches as you are feed-
ing them into the unit, as a sudden inward surge
could pull your hands and arms into the unit.
14. Never remove guards, deflectors, or warning labels
from the unit. If any of these are found to be missing,
take the unit out of service until the appropriate
repairs can be made. Tag the machine so others do
not mistakenly attempt to use it while awaiting parts
or repairs.
6. Always stand clear of the discharge area to avoid
being struck by ricochets or material being ejected
from the machine.
15. Always make sure that the shredding chamber,
shredder hopper, and chipper cone are empty before
restarting the unit after it has been idle. Attempting to
start the unit with material in these areas could cause
the engine starting cord to stop suddenly, injuring
your hand and fingers, or toppling the unit over.
7. Never allow material to build up in the discharge area
or shredding chamber, as this may cause new mater-
ial being fed into the machine to kickback with suffi-
cient force to injure you or other bystanders.
8. Never allow material to build up around the engine
during chipper/shredder operation. This could result
in a fire, or overheating of the engine.
16. Never tamper with any engine controls to alter or
increase maximum unit running speed. An over
speeding condition could cause the engine to over-
heat, resulting in risk of fire, permanent engine dam-
age, and voiding of your product warranty.
9. Never attempt to reposition or move the
chipper/shredder unit while it is running. Doing so
could cause the machine to tip over, and reaching to
steady the unit could result in accidental insertion of
your hands into the chipper cone or shredder hopper
areas.
17. Always comply with the engine manual instructions
for operating and periodic maintenance requirements.
Make sure the oil level is always in the safe zone,
and keep the air filter element clean.
10. Never continue to operate the machine if it starts
making unusual noise or vibration. Shut the engine
off immediately, allow the rotor to stop, disconnect
the spark plug wire from the spark plug, and do the
following:
18. Never allow children to operate the machine. Do not
allow adults to operate it without proper instruction.
TRANSPORTING AND STORAGE
1. Always use the hopper handle and built-in wheels to
move the chipper/shredder. Never lift the unit using
the fuel tank for support. If the unit must be lifted ,
always use at least two people, and always grip the
unit securely using the front leg and hopper handle.
• Inspect the unit for any signs of damage or foreign
material in the chipping or shredding areas.
Remove any solid material that may be preventing
the unit from operating properly.
2. If the unit must be tilted for transporting, consult the
engine manual for required preparation. Normally,
fuel and oil must be drained to prevent dangerous
• Check for loose parts, and loose or missing hard-
ware, and repair or replace as required.
4
Safety Rules
fuel leakage, and unwanted transfer of the sump oil
into the cylinder head area.
text on the preceding pages, or contact your local dealer.
Should any of these labels become unreadable because
of being worn, faded, or otherwise damaged during the
use of your chipper/shredder, please use the part num-
ber information provided to order a replacement label
from your local authorized dealer.
3. Always refill the oil sump with the recommended oil
before attempting to use the unit again after it has
been drained for transportation.
4. Always observe safe refueling and fuel handling prac-
tices when refueling the unit after transportation or
storage.
These labels are easily applied, and will act as a con-
stant visual reminder to you, and others who may use
the equipment, to follow the safety instructions neces-
sary for safe, effective operation of your chipper/shred-
der.
5. Always follow the engine manual instructions for stor-
age preparations before storing the unit for prolonged
periods.
6. Always follow the engine manual instructions for
proper start-up procedures when returning the unit to
service.
SERVICE AND MAINTENANCE
1. Always follow recommended engine and
chipper/shredder procedures when performing
required service and maintenance on the unit.
2. Always use only factory authorized replacement parts
when making repairs.
3. Always comply with recommended factory specifica-
tions on all settings and adjustments.
4. Only factory authorized service locations should be
utilized for major service and repair requirements.
5. Never attempt to make major repairs on this unit
unless you have been properly trained and certified
to work on large capacity chipper/shredder units.
Improper service procedures can result in hazardous
operation, equipment damage, and voiding of manu-
facturer’s warranty.
Caution Label
Part No. 5004100 (hopper)
SAFETY DECALS
This chipper/shredder unit has been designed and man-
ufactured to provide you with the safety and reliability
you would expect from an industry leader in outdoor
power equipment manufacturing.
Although reading this manual and the safety instructions
it contains will provide you with the necessary basic
knowledge to operate this equipment safely and effec-
tively, we have placed several safety labels on the chip-
per/shredder to remind you of this important information
while you are operating the unit.
Danger Label
Part No. 5001612 (chipper cone & hopper)
Part No. 1709529 (discharge chute)
These important safety labels are illustrated on the right,
and are shown here to help familiarize you with the loca-
tion and content of the safety messages you will see as
you perform normal chipping and shredding operations.
Please review these labels now, and if you have any
questions regarding their meaning or how to comply with
these instructions, reread the complete safety instruction
5
Assembly
GENERAL
All of the major assembly procedures on your new
Chipper/Shredder were performed at the factory, and
only the items listed in this section need to be taken care
of to make your unit fully operational.
TOOLS REQUIRED
- 1/2" Box Wrench or Socket
- 7/16" Box Wrench or Socket
- 1/4" Hex Wrench
HARDWARE DESCRIPTION
The hardware pack packaged with your unit contains the
items listed below and possibly additional hardware
required for other models:
Figure 1. Installing the Chipper Cone
Description
Qty.
- 5/16-18 Whiz Nut
3
2
2
4
1
2
2
- 5/16-18 x 1/2 Hex Head Bolt
- 5/16-18 x 3/4 Hex Head Bolt
- 5/16 Flat Washer
- 5/16 Lockwasher
- 1/4-20 Whiz Nut
- 1/4-20 x 3/4 Hex Socket Screw
Figure 2. Installing the Hopper Handle
Be sure to clean all hardware threads of paint and debris
before assembling.
CHIPPER CONE
1. See figure 1. Position the chipper cone assembly base
over the three 5/16-18 threaded studs protruding from
the engine plate, and attach using (3) 5/16-18 whiz
nuts.
2. Tighten whiz nuts securely using a box or socket
wrench.
Figure 3. Attaching Hopper to the Rotor
HANDLE
1. Lift the hopper handle up until the outer holes in the
handle align with the holes in the shredder hopper.
See figure 2.
2. Secure the Hopper Handle in position using (2)
1/4-20 x 3/4 hex socket screws, and (2) 1/4-20 Whiz
nuts, inserting the screws from the outside of the
shredder hopper.
3. Tighten all four screws securely.
Figure 4. Installing Hardware Inside Hopper
6
Assembly
Slide bag over dis-
charge chute.
Lift discharge
Make sure bag
noose fits over top
of discharge chute
and notch in chute
bottom.
chute and slide
bag over chute.
Make sure bag
noose fits over
top of discharge
chute and notch
in chute bottom.
Pull drawstring tight
Pull drawstring tight
Figure 5B. Discharge Bag Installation-European model
Figure 5A. Discharge Bag Installation
HOPPER
DISCHARGE BAG
1. Attach the hopper to the rotor housing, using care to
engage the metal lip of the hopper liner to the inside
of the housing as shown in figure 3.
Your unit comes equipped with a bag for collecting
debris as it exits the discharge chute.
See figures 5A & 5B for installation.
2. Secure the hopper to the rotor housing using (2) 5/16
x 1/2 hex head bolts and (2) 5/16 flat washers. Do not
tighten hardware at this time.
ENGINE OIL
3. See figure 4. From the inside of the hopper, install (1)
5/16-18 x 3/4 hex head bolt, 5/16 lockwasher, and 5/16
flat washer into each of the upper and lower holes of
the metal hopper liner, and tighten finger-tight.
Fill the engine oil sump with SAE 30 oil (5W30 for winter
use). See page 16 for additional information and the
location of the fill-plug, or consult the engine manufactur-
er’s literature shipped with your chipper/shredder.
4. Make sure the hopper is properly seated on the rotor
housing, and then tighten all hardware securely.
7
Controls & Major Components
C. Bag
OPERATING CONTROLS
The two-bushel bag is standard equipment and attaches
in seconds for direct, one-step bagging.
Your new chipper/shredder has been designed for both
ease of use and lasting reliability, and features a simplified
control system that requires just two operating controls.
D. The Support Leg And Wheels
These two operating controls, the Choke and the
Throttle, are conveniently located on the chipper/
shredder engine where they can be easily adjusted to
start and run the unit under a variety of operating condi-
tions.
The sturdy support leg and wide-track wheels give your
chipper/shredder a stable, 3-point stance, allowing solid
positioning on virtually all surfaces. The large wheel
diameter and durable rubber tread design make trans-
porting the unit easy, and the low center of gravity helps
prevent tipping while moving over bumpy or uneven ter-
rain.
Choke
The choke controls the fuel to air ratio, and helps make
cold starts easier by providing a rich, easily ignited fuel
mixture.
E. Fan/Rotor Housing
This housing assembly contains the chipper knives and
shredding hammers that process the materials you’ll be
chipping and shredding.
Throttle
The throttle controls engine speed, and allows you to
conserve fuel when idling, or to run the unit at maximum
speed for optimal chipping and shredding performance.
F. Engine
The rugged, four-cycle air-cooled engine provides all the
power necessary to readily chip or shred a wide variety
of materials. Read the engine manufacturer’s manual,
which has been provided with your unit, for additional
important information.
MAJOR COMPONENTS
The major components of your chipper/shredder are:
• Shredder Hopper
• Discharge Chute
• Bag
• Engine
• Chipper Cone
• Shredding Hammers
G. Chipper Cone
The rugged chipper cone helps guide tree limbs and
branches directly into the chipper knives, and it’s unique
angled mounting helps pull the material in quickly for
aggressive chipping action.
• The Support Leg & Wheels • Chipper Knives
• Fan/Rotor Housing
Each of these major components serves a specific func-
tion on the chipper/shredder. Please take a moment and
familiarize yourself with the name, location, and function
of these components so that you will better understand
the safety and operating instructions provided in this
manual. See figure 6.
Shredding Hammers (Not shown)
The unique design of the patented free-swinging, trian-
gular shredding hammers and “J” hammers helps pull
material into the shredding chamber, and increases vol-
ume-reduction efficiency more than most other brands.
A. Shredder Hopper
The revolutionary design of these triangular hammers
also provides 300% more shredding power than conven-
tional fixed rectangular hammers, and since they can be
rotated, their 6 different useable cutting edges help
extend service life dramatically.
The durable, low-profile design of the shredder hopper
makes shredding convenient, yet holds a full size load of
material for maximum processing capability.
B. Discharge Chute
The discharge chute ejects the material out of the chip-
per/shredder, delivering processed materials to a specific
area. The pivoting deflector shield directs debris down,
while allowing soft materials to be ejected freely from the
machine.
Chipper Knives (Not shown)
Our chipper/shredder line also features high quality, pre-
cision-tempered, solid steel chipper knives, which can be
sharpened again and again to extend their useful life for
many seasons to come.
8
Controls & Major Components
A
B
G
Optional Vacuum Kit
F
C
E
D
Figure 6. Component Location
MODEL SPECIFICATIONS
SPECIFICATIONS
Horsepower
MODEL 5/14
5 H.P.
2 1/2"
MODEL 8/14
8 H.P.
Chipping Capacity
Chipping Knives
Shredding Hammers
3"
2
2
2 - Triangular
2 - Triangular
2 - J Hammers
2 - J Hammers
Shredder Capacity
Waste Reduction Ratio
Weight
1/2" x 18" Long
Up to 20:1
97 lbs.
1/2" x 18" Long
Up to 20:1
119 lbs.
Optional Equipment
Vac Kit
Vac Kit
w/Leaf Tray & Vacuum End
w/Leaf Tray & Vacuum End
9
Operation
that ejects the shredded or chipped material out of the
discharge chute, making room for more material to be
pulled in and processed.
DESCRIPTION
General
Your new chipper/shredder is designed to permit years
of trouble-free operation while handling a wide range of
chipping and shredding needs.
Optional Vacuum Attachment
The vacuum force created by the design of the fan
blades and rotor makes it possible to equip your chip-
per/shredder with an optional vacuum attachment that
greatly simplifies the processing of leaves and other
loose waste. The vacuum kit attaches directly to the back
of the grinder, and after a cover is placed over the shred-
der hopper, the vacuum action is diverted to the vacuum
attachment.
To help you get the most out of your investment, as well
as to help you understand how the unit works, this section
explains the basic operation of the chipper/ shredder.
Chipper Operation
The chipper is designed to handle tree limbs and branch-
es up to 3" in diameter (2-1/2" on Model 5/14). The pow-
erful motor and durable chipping knives also permit the
unit to process tough organic matter such as corn stalks
and berry canes.
The vacuum kit allows leaves to be raked directly into the
leaf tray, where vacuum action draws the material into
the shredding chamber.
For hard-to-reach places, a nozzle and handle assembly
can be used to vacuum material up much like a vacuum
cleaner. The strength of the vacuum can be adjusted for
different situations by turning a sleeve on the assembly.
Tree limbs and branches are inserted “butt end” first into
the chipper cone, and are fed into the chipper block,
where two chipper knives mounted on a heavy duty
rotor rotate at 3600 rpm. The sharp cutting edges and
angle of the blades actually pulls the tree limbs and
branches into the chipper block, cutting the wood into
small chips, and promoting rapid material processing.
SITE LOCATION
1. Select an area with firm, level ground, covered by dirt
or grass. Do not operate on wet, slick surfaces, or in
areas with heavy pedestrian traffic.
The chips of material then pass through a slot in the rotor
behind the chipper knives, where discharge air flow con-
veys them through the fan chamber and out of the dis-
charge chute.
2. Locate the unit near the waste materials to be
processed to reduce lifting and carrying.
3. Trim and stack the materials for more efficient and
safe operation of the chipper/shredder unit.
Shredder Operation
The shredder is designed to shred light brush, leaves,
and other soft but bulky organic waste. As this material is
loaded into the shredder hopper, it is pulled into the path
of patented swinging triangular and “J” shaped shredding
hammers.
4. Provide sufficient room for maneuvering around the
chipper/shredder. Never set up the work area so that
operators must over-reach or have to step over mate-
rials to be processed.
5. Review all operating safety instructions before pro-
ceeding.
The hammers cut and grind the waste into progressively
smaller pieces, and air flow then conveys the reduced
waste out of the discharge chute.
DANGER
Because of this unique swinging hammer design and tri-
angular shape, the Chipper/Shredder has 300% more
shredding power than conventional rectangular shred-
ding hammers used by others.
Internal combustion engines produce Carbon
Monoxide, a colorless, odorless, and tasteless
gas that can cause dizziness, nausea, uncon-
sciousness, and even brain damage or death if
inhaled for prolonged periods.
The Vacuum Action
Operate the chipper/shredder outdoors in a well
ventilated location only.
In addition to the shredding hammers and chipping
knives, the rotor has four fan blades integrated into its
design. When the rotor is spinning, a vacuum action is
created, which pulls waste down into the shredder hop-
per and into the grinding chamber.
Keep children, pets, and bystanders away from
the operating and discharge areas.
Failure to follow these instructions may result in
serious injury or death to you or bystanders.
These spinning fan blades also create a blowing force
10
Operation
7. Adjust throttle speed to “high” for best chipper/shred-
der action.
CHECKS BEFORE STARTING
1. Inspect the chipper cone and shredder hopper for
debris and other objects that may have fallen into the
machine while the unit was idle, and remove them
before starting the unit. Before reaching into the
openings, always disconnect the spark plug wire at
the spark plug.
Restarting A Warm Engine
Restarting an engine that is already warm from previous
running does not normally require use of the choke.
1. Move throttle lever to “start” position.
2. Place foot on front support leg to hold unit firmly in
place, and adopt a stable stance.
2. Inspect the chipper cone and shredder hopper, and
make sure that they are firmly attached to the hous-
ing.
3. Pull starting rope out rapidly until engine starts. Allow
rope to return normally.
3. Check all parts to ensure that they are properly
attached and that all fasteners are properly tightened.
4. Adjust throttle speed to “high” for best chipper/shred-
der action.
4. Make sure the discharge chute deflector pivots freely,
allowing mulch to be discharged freely. If the deflec-
tor does not pivot, loosen the mounting screw slightly
to reduce tension on the pivot point.
Idle Speed
Use the “low” position on the throttle lever to reduce
stress on the engine when chipping or shredding is not
being performed. Lowering the engine speed to “idle”
the engine will help extend the life of the motor, as well
as conserve fuel and reduce the noise level of the equip-
ment.
5. Before attempting to start the engine, make sure:
•. oil level in engine is full.
•. no fuel has spilled onto engine or surrounding
components.
Operating Speed
•. all hardware and parts are properly secured.
•. no foreign objects are in chipper cone or shredder
hopper.
For normal chipping, shredding, and vacuuming opera-
tion, set the throttle lever to “fast”.
•. your clothing is not excessively loose or hanging
down, and you are not wearing jewelry or other
articles that could get caught in the machinery.
OPERATING INSTRUCTIONS
General
Your Chipper/Shredder is easy to set up and operate,
but requires simple precautions that are very important,
but easy to follow.
START-UP
The controls required to start and run the chipper/
shredder are located on the engine and are marked
“Choke” and “Throttle”.
Please review the following instructions and illustrations
carefully. Always comply with these and all other safety
and operating instructions in this manual, and on warning
labels on the chipper shredder unit, whenever handling
or operating this machinery.
A more detailed description of engine operation and all
related precautions and procedures can be found in the
engine manufacturer’s manual that accompanies each
chipper/shredder.
Always wear safety goggles when operating the chip-
per/shredder. Never allow anyone to operate the unit or
remain in the immediate area unless they are wearing
approved safety goggles.
Cold Starts
1. Move choke lever to full choke position.
2. Move throttle lever to “start”.
Proper Stance For Chipping
3. Place foot on front support leg to hold unit firmly in
place, and adopt a stable stance.
Always maintain a stable, well-balanced stance to one
side of the unit when operating the chipper/ shredder.
Never stand directly in front of the chipper cone when
performing chipping operations, since occasional kick-
backs may occur, and result in you being struck by the
tree limb or branch being kicked back. Hold tree limbs
and branches carefully to maintain control as they are
being fed into the chipper cone, letting the self-feeding
action of the unit pull the material in.
4. Pull starting rope out slowly one time and allow to
return normally.
5. Pull starting rope out rapidly, and allow rope to return
normally.
6. When engine starts, gradually move choke lever to
“no choke” position and increase throttle speed.
11
Operation
*2573
*2572
Figure 8. Feeding Materials For Shredding
Figure 7. Proper Stance for Chipping
Never wrap your fingers around tree limbs and branches
so tightly that you can’t let go quickly if the tree limb or
branch is suddenly pulled into the chipper block or shred-
der hopper area.
*2574
Leaves and other lightweight organic matter can be
quickly shredded in your chipper/ shredder and reduced
to 1/20th of their original volume. Place material to be
shredded into the shredder hopper. Avoid large amounts
of wet material that can cause shredded matter to build
up in the discharge chute and prevent proper discharge.
Alternate the processing of dry and wet materials to help
prevent clogging of the discharge chute. When time per-
mits, let wet material dry out for a few days prior to
shredding.
Properly Feeding Longer Materials
For Shredding
When processing brush, small branches, or other long
types of organic matter, feed the materials to be shred-
ded into the shredder hopper lengthwise, butt end first,
to prevent clogging of the hopper. If brush gets tangled
and clogged as it’s being fed into the hopper, never
reach into the hopper to clear it while the unit is running.
Shut the engine off, let the rotor come to a complete
stop, and disconnect the spark plug before attempting to
clear the hopper.
NOTE: Be sure to shut off the engine and allow the rotor
to stop completely before emptying the bag.
Figure 9. Properly Feeding Longer Materials for
Shredding
12
Operation
MATERIAL PROCESSING
SHUTTING DOWN
General
DANGER
Engine and surrounding parts become extremely
hot during normal use, and will cause serious
burn injuries if touched before the engine has
cooled.
Most materials to be processed can be handled more
efficiently by observing the following chipper/shredder
operating tips:
Allow engine to cool completely before touching
these hot surfaces.
Shredding
1. Don’t overload the shredder hopper by dumping large
volumes of material into the hopper opening.
When you’re done using the chipper/ shredder, following
these simple but worthwhile steps will help you shut
down the unit properly so that your next use will be trou-
ble-free.
2. Alternate wet and dry material to prevent the dis-
charge chute from becoming plugged.
3. Never use any object to force material into the shred-
der chamber. It could get caught in the shredding
hammers and damage the unit, reducing shredder
hammer effectiveness.
1. When you have completed processing the materials
to be chipped or shredded, shut the engine off and
allow the rotor to come to a complete stop before pro-
ceeding.
Chipping
2. Remove the spark plug wire from the spark plug to
prevent the possibility of inadvertent starting.
1. Prune tree limbs and large branches to limit size to
the maximum diameter allowed. Pruning tree limbs
and branches close to the main portion of the limb or
branch will make feeding into the chipper cone easi-
er, and will help you maintain control as the material
is drawn into the chipper block.
3. Inspect the following areas for any remaining materi-
als that may have built up or become caught during
the final chipping and shredding operations:
• SHREDDER HOPPER
2. Large, hard, or dried-out tree limbs that tend to resist
chipping can be processed by rotating them manually
as you alternately insert and retract them in the chip-
per cone.
Visually inspect inside of shredder hopper, and
remove any material remaining inside.
• CHIPPER CONE
3. If the material to be chipped is extremely hard and kicks
back forcefully, or cannot be easily controlled while it is
being fed into the unit, remove the material immediately
and set it aside. You may need to sharpen the chipper
blades to process the material. Consult the mainte-
nance and service section of this manual for sharpen-
ing instructions, or take your unit to an authorized ser-
vice center for prompt, reliable service.
Visually inspect chipper cone to ensure that there
are no pieces of tree limbs, branches, or any other
debris remaining inside. Remove and discard this
debris.
• DISCHARGE CHUTE
Lift the discharge deflector, and inspect the chute
for clogs or other build up, and remove as
required. This area is most likely to require clean
out if wet or green organic materials have been
shredded.
4. If normal chipping operation begins to require additional
feeding force to process material, the chipper knives
may be in need of routine sharpening. See the mainte-
nance and service section of this manual for sharpen-
ing instructions, or take your unit to an authorized ser-
vice center for prompt, reliable service.
• ENGINE RECOIL STARTER AREA
This area of the engine is also the intake for the
motor’s air cooling fans. Remove any build-up of
grass or shredded material that may have accu-
mulated around the intake openings. Use care to
prevent build-up from being pushed into the intake
area during cleaning.
5. Always try to maintain adequate control of the tree
limbs and branches being fed into the chipper cone to
prevent them from whipping around and causing
injury to you or damage to the cone. Larger limbs and
branches may have a tendency to kick back toward
the operator, so always be alert as you feed materials
into the cone.
6. Cut any left-over material into 1" pieces and process
them through the shredder hopper.
13
Operation
If you are unsure about processing a material not cov-
ered in the guide below, contact your local authorized
dealer, or call our Customer Service Department at 414-
284-8786 for assistance before proceeding.
WASTE MATERIALS GUIDE
Your chipper/shredder is designed to efficiently process
a wide variety of organic yard and garden waste materi-
als. To obtain consistent performance, extend the life of
your unit, and help ensure safe operation, do not
attempt to process non-organic materials, and always
follow the material requirements shown in the Waste
Materials Guide below.
If you encounter any difficulties while processing any of
these recommended materials, consult the troubleshoot-
ing section of this manual for guidance and recommend-
ed corrective action.
OPERATION
Shredding
TYPE OF WASTE PERMITTED
SIZE LIMITATIONS
NOTES
Dry, moist, or wet organic
material, including leaves, plants,
flowers, fruits, vegetables.
Dry waste is more easily
Branches and twigs
up to 1/2" diameter
and 18" long.
Alternately chip or
shred wet, green
waste with dry waste
to avoid plugging of
discharge chute.
processed than wet waste.
Fruit and vegetable
waste that will pass
easily into the shredder
chamber.
Process at a feeding rate that
allows the rotor to keep turning
at a consistently high rate
of speed.
If time permits, allow wet
material to dry out for a few
days prior to shredding.
Chipping
Long, thicker tree limbs,
smaller branches, or small
branches grouped together
for ease of handling.
Tree limbs and
branches, or small
groups of branches.
Bulky tree limbs and
branches may need
to be pruned close to
the main stem to
Avoid long pieces
(over 6') as the
pass through the
chipper cone properly.
Never use the chipper/shredder
to chip very hard, dry materials
such as kiln-dried dimensional
lumber (2x4’s, 1x2’s, etc.), or other
building and lumber yard materials.
outer end can whip
in a circular motion
and strike you or
bystanders, causing
personal injuries.
As the material is chipped,
short lengths may be
pushed into the chipper
with another tree limb or
batch of branches. Never
place hands in chipper
cone to feed short lengths
of material.
Never use the chipper/shredder to
chip pressure-treated wood products
such as landscape timbers, fence
posts, or other outdoor building or
landscaping lumber products.
Maximum Diameter:
Model 5/14 - 2 1/2"
Model 8/14 - 3"
Vacuum/
Shredding
(Optional)
Light, loose, dry waste, such as
leaves, grass clippings, and
light shavings, or sawdust.
Small materials that
will not obstruct the
vacuum hose as it’s
being vacuumed.
The vacuum is engineered
for small, loose waste and
for cleaning around decor-
ative landscaping and
Avoid vacuum operation on areas
where hard, non-organic materials
such as gravel, dirt clumps, or
other hard objects could get
flower beds. Twigs, wet
leaves, and other bulky
materials will clog the hose
and prevent shredding.
vacuumed into the shredder chamber.
14
Normal Care
SCHEDULE
Your chipper/shredder has been designed and produced by the industry’s leading manufacturer of outdoor power
equipment to provide you with years of reliable operation.
Keeping your chipper/shredder in top running condition will prolong its life, and help you obtain optimum performance
whenever you wish to chip or shred yard or garden waste.
Please read this normal care schedule, and observe these recommended care operating intervals to extend the life of
your unit.
Normal Care Procedures - Perform Each Item At Use Interval Shown
ITEM
Page
15
16
16
16
16
17
17
16
17
18
18
18
18
18
5 Hrs
25 Hrs
100 Hrs*
Check For Loose Parts & Hardware
Check Oil Level And Add As Req’d
Change Oil
●
●
●
●
Change Spark Plug
Clean Engine Air Intake Area
Clean/Oil Air Filter Element
Inspect/Rotate Shredding Hammers
Clean Cooling Fins
●
●
●
●
●
Inspect/Sharpen Chipping Knives
Lubricate Wheel Axles
●
●
●
●
●
Check All Safety Labels
Inspect Starter Rope/Handle
Inspect Chipper Cone
Inspect Shredder Hopper & Guards
*Perform required care yearly or at 100 Hour intervals, whichever is less.
Unusual noise or vibration, decreased performance, or engine odor, requires immediate attention.
SERVICING THE
CHIPPER/SHREDDER
If you prefer, your local authorized dealer can make these
checks and perform the required procedures for you.
Loose Parts And Hardware
General
Check the following areas, and tighten as required:
The following information will help you make the neces-
1.Chipper Cone & Cone Mounting
2.Shredder Hopper
3.Rotor Housing
sary checks and perform the procedures required to fol-
low the normal care recommendations made for your
chipper/shredder unit.
4.Deflector Shield
15
Normal Care
Oil Level
1.Oil level must be full. Check the oil level by removing
oil fill plug. Oil level should be up to the bottom of the
fill plug opening (see Figure 10).
2.Add SAE 30 oil (5W30 for winter use) as necessary..
3.Do not overfill the oil sump! Excess oil will result in
frothing of oil, reducing the effectiveness of the oil
and shortening engine life.
4.After the proper oil level is reached, screw fill-plug in
tightly, and clean surrounding area of any spillage to
prevent sticking of debris that could fall into engine
during next oil check.
Changing Oil
Figure 10. Engine Oil Fill Plug
Effective lubrication of the engine is critical to the life
expectancy of internal engine components. Because of
this, engine oil should be changed yearly when the chip-
per/shredder is used only occasionally, and more fre-
quently depending on the amount of time the
chipper/shredder is in use.
*2556
1. Drain engine oil by unscrewing drain plug in engine
base (see Figure 11) and letting oil drain into a suit-
able container.
WARNING
Never drain oil immediately after running the
chipper/shredder, as it will be hot and could
cause burns if allowed to splash onto your
hands or body.
Figure 11. Engine Oil Drain Plug
Electrodes
2. Dispose of used oil by returning it to an oil recycling
center or service station with a oil recycling tank.
3. After all old oil has been drained, screw drain plug in
securely, and add oil as instructed in the "Oil Level”
section, or see the engine manufacturer’s manual for
complete details and oil specifications.
Porcelain
.030 Gap
Changing The Spark Plug
An annual spark plug change is an inexpensive preven-
tive measure that can help keep your unit running prop-
erly throughout the year.
Figure 12. Spark Plug Gap Setting
3. Using a spark plug socket and appropriate wrench,
unscrew the spark plug from the engine.
This chipper/shredder uses the following types of spark
plugs: Autolite 356, Champion J-8C or equivalents.
4. After first setting the proper gap on the replacement
spark plug, screw the new plug in and tighten. Don’t
over tighten, as this could crack the porcelain insula-
tor and ruin the plug.
1. Disconnect the spark plug wire from the spark plug.
2. Clean the area around the spark plug to remove
debris that could fall into the engine when the plug is
removed.
16
Normal Care
*2569
Clean Engine Fins/Air Intake Area
The engine that powers this chipper/shredder is air-
cooled, and requires unobstructed air flow into and
around the engine. For proper engine cooling, the cool-
ing fins on the engine cylinder head area must also be
kept clear of chipper/shredder deposits, as well as any
other build-up of debris that could prevent heat from radi-
ating away from the engine.
To clean the air intake area, remove any chipper/shred-
der build up, and then blow out the area using a stream
of compressed air. If a compressor is not available, use a
stiff bristle parts brush, which is available at most auto
parts supply stores.
Clean
Around
Area
To clean the cooling fins, brush the area between the
fins with a stiff bristle parts brush, and blow out any
remaining debris with a stream of compressed air. If the
cooling fins are caked with an oily build-up of
chipper/shredder debris, using a commercially available
engine cleaning aerosol may help loosen and remove
the deposits.
Figure 13. Engine Air Intake Area
Inspect/Rotate Shredding Hammers
If you use such a cleaning product, you must follow all
safety and use instructions to prevent damage to the
engine components and personal injury to you.
The patented shredding hammers on this line of chip-
per/shredders can be easily rotated to provide new cut-
ting surfaces as required.
Using a stream of water to clean the engine requires
immediate drying of engine components to prevent rust-
ing and possible malfunctioning of the engine’s electrical
system.
Triangular hammers can be rotated twice, then flipped
over for a total of six sharp, new leading edges. “J” ham-
mers on the Model 5/14 can be flipped over once, for a
total of two sharp, new leading edges.
If the shredding action of the unit seems sluggish, or you
notice that shredded material is not shredded as thor-
oughly as when the unit was new, the shredding ham-
mers may need to be rotated or replaced.
Clean/Oil/Replace Air Filter Element
The engine air filter element filters and removes airborne
dirt, dust, and other work site debris from the air before it
can enter the carburetor and damage sensitive fuel pas-
sages.
Rotating the shredder hammers requires the following
major steps:
Depending on the type of air filter element installed on
your chipper/shredder engine, you should periodically
perform one of the following steps:
1. Removal of the shredder hopper.
2. Removal of the rotor housing.
• clean and oil the air filter (foam filter only),
• only clean the air filter (Type “A” filter),
3. Removal, rotation, and/or replacement of the shred-
der hammers.
4. Replacement of the rotor housing.
5. Replacement of the shredder hopper.
• or replace the filter every year or 100 hours of opera-
tion (paper filter element).
Consult the Troubleshooting and Repair Section of this
manual for complete disassembly, inspection, and
replacement instructions.
Consult the engine manufacturer’s manual provided with
your chipper/shredder for the specific instructions that
apply to your unit.
Your local authorized dealer can provide this service to
you if you do not wish to disassemble the unit and
inspect/repair it yourself.
If you have any doubts about what type of filter element
you have, consult you local authorized dealer for help in
replacing or ordering the correct element.
17
Normal Care
If any label can’t be read or is missing, contact your local
dealer for an immediate replacement. If you must use the
unit without the label, review the label information in the
“Safety Labels” section of this manual.
Inspect/Sharpen Chipping Knives
This unit’s high-quality chipping knives are manufactured
from a high-quality precision tempered steel, and are
designed to provide positive feeding of tree limbs and
branches, as well as exceptionally long service life.
Inspect Starter Rope/Handle
The recoil starter rope and handle should be inspected for
signs of abrasion or wear that could result in breakage.
Normal chipping operations will gradually wear the cut-
ting edges of these blades, but the rugged design and
tough material used allows them to be quickly and easily
resharpened for long-lasting, like-new performance.
Don’t use worn out parts, since they could break while
tension is applied to the rope, throwing you off balance.
When tree limbs and branches begin to require addition-
al pressure to feed into the chipping knives, it may be
time to sharpen the cutting edges to return them to their
original performance.
Contact your local authorized dealer for replacement if
these parts need to be replaced.
Sharpening the cutting knives requires the following
major steps:
Inspect Chipper Cone & Shredder Hopper
The chipper cone and shredder hopper are made of a
highly durable polyethylene material that can withstand
repeated abrasion and impact from normal
1. Removal of the shredder hopper
2. Removal of the chipper cone
3. Removal of an access plug
chipper/shredder waste material processing.
4. Removal of the cutting knives
Check these parts to make sure that they haven’t been
damaged or worn excessively by constant use, and
replace them if they are cracked, worn out, or no longer
fit securely on the chipper/shredder unit.
5. Careful, low-speed, wet grinding of a new edge
6. Reassembly of the cutting knives to the oval chipping
block
Cracks, worn areas, and loose attachment points can
cause material to jam or clog when feeding it into the
machine, and may result in kick-back or other hazard to
the operator.
7. Reassembly of the chipper cone and shredder hop-
per to the unit
Consult the Troubleshooting and Repair Section of this
manual for complete disassembly, inspection, and
replacement instructions.
Contact your local dealer for replacement parts if your
unit shows any evidence of these problems, and discon-
tinue use of the unit until the appropriate repairs can be
made.
Your local authorized dealer can provide this service to
you if you do not wish to disassemble the unit and
inspect/repair it yourself.
Never try to make temporary repairs yourself, as the
repairs could give way during chipper/shredder opera-
tion, and expose you and bystanders in the area to risk
of injury.
Lubricate Wheel Axles
The low profile and excellent balance of the unit makes
transporting it easy, but constant exposure to dirt, debris,
and chipper/shredder materials requires routine lubrica-
tion of the wheels.
Never attempt to install non-factory parts on your chip-
per/shredder unit. These parts could appear to fit, but
could cause operating and safety problems that might
lead to equipment damage and/or injury.
To lubricate, squirt 3-5 drops of SAE 30 oil on each
wheel axle. Wipe up any run-off and spin wheels briefly
to work oil around entire axle.
Inspect Hopper Guards
The hopper guards are made of a tough, flexible material
that permits easy loading of the hopper, while preventing
shredded pieces from being ejected out toward the oper-
ator.
Check Safety Labels
The safety labels located in various positions on the
chipper/ shredder have been placed to help remind you
of important safety rules while you are running the chip-
per/shredder unit.
The hopper guards must always be intact and properly
installed to provide protection from ejected pieces.
While these labels are extremely durable, constant abra-
sion from tree limbs and branches can eventually affect
their readability. Check each label to make sure it is still
properly affixed to the chipper/shredder, and is still com-
pletely legible.
If a hopper guard becomes damaged in use, do not
operate the chipper/shredder until the hopper guard
can be replaced.
Contact your local authorized dealer for replacement
parts.
18
Storage
*2571
TEMPORARY STORAGE
(30 Days Or Less)
Remember, the chipper/shredder fuel tank probably will
still contain some gasoline, so never store the chipper/
shredder indoors or in any other area where fuel vapor
could travel to any ignition source. Fuel vapor is also
toxic if inhaled, so never store the chipper/shredder in
any structure used for human or animal habitation.
Here’s a quick checklist of things to do when storing your
chipper/shredder temporarily, or between uses:
• Store the unit in a location where there’s no danger of
overhead objects falling into the chipper cone or
shredder hopper.
Figure 14. Improper Placement Of Unit
• Keep the unit in an area away from where children
may come into contact with it. If there’s any chance
of unauthorized use, remove the spark plug, and put
it in a safe place. Be sure to protect the spark plug
opening from foreign objects with a suitable cover.
*2570
• Never put the unit away while the engine is still hot
from running. Let the engine cool down first to pre-
vent the chance of fire.
• Never try to lift or position the unit in the storage area
by holding the fuel tank. Always let the engine and
muffler cool completely before allowing yourself to
contact these parts.
• If the unit can’t be stored on a reasonably level sur-
face, use a block of wood to chock the wheels.
Never store the Chipper/Shredder where it will not be
in a stable position.
Figure 15. Improper Lifting Of Unit
• Remove spark plug, and squirt 1 ounce of SAE 30 oil
into spark plug hole.
• Never tip the unit more than 75° from vertical, and
never lay the unit down on its side, as this could cause
fuel leakage, and/or undesirable oil transfer into the
cylinder head and spark plug area. Excessive oil in the
cylinder head will prevent unit from starting properly.
• Plug hole and pull starter cord slowly to distribute oil
evenly in cylinder head area.
• Reinstall spark plug.
• Transport unit to a suitable storage location. If you
have chosen to use a fuel stabilizer and have not
drained the fuel system, follow all safety instructions
and storage precautions in this manual to prevent the
possibility of fire from the ignition of gasoline fumes.
Remember, gasoline fumes can travel to distant
sources of ignition and ignite, causing risk of explo-
sion and fire.
• Overhead objects that fall into shredder hopper may
cause damage to the unit or serious injury to user
and others if not detected before unit is started.
LONG TERM STORAGE
(Longer Than 30 Days)
Your chipper/shredder can be safely stored during off-
seasons by following these simple storage instructions:
• Cover chipper/shredder unit to protect shredder hop-
per and chipper cone from debris and foreign objects.
• Drain fuel system completely following engine manu-
facturer’s instructions or add fuel stabilizer to prevent
fuel from gumming up during extended storage peri-
od.
• If there is any possibility of unauthorized use or tam-
pering, remove the spark plug and store it in a safe
place before storing the chipper/shredder unit away.
Be sure to plug the spark plug hole to prevent foreign
material from entering.
• Clean external surfaces, engine and cooling fan.
19
Troubleshooting & Repair
TROUBLESHOOTING
WARNING
Never attempt to perform any of these proce-
dures with the engine running. Always turn the
engine off, let the rotor come to a complete stop,
and disconnect the spark plug wire from the
spark plug before attempting to correct any
operating problems.
While normal care and routine maintenance will extend
the life of your chipper/shredder, prolonged or constant
use may eventually require that service be performed to
allow it to continue operating properly. The troubleshoot-
ing guide below lists the most common problems, causes
and remedies.
Failure to comply with this safety requirement
can result in serious personal injury to you or
bystanders.
See the service information on the following pages for
instructions on how to do most of these minor repairs
yourself. If you prefer, all of these procedures can be
performed for you by your local authorized dealer.
SYMPTOM
POSSIBLE CAUSE
• Out of gas.
REMEDIES
Engine won’t start.
• Add gas.
• Spark plug wire disconnected.
• Engine controls set wrong.
• Connect spark plug wire.
• Check engine controls and
adjust.
• Spark plug fouled.
• Remove Spark Plug, clean, and
replace.
• No compression - rope pulls•
without resistance.
• See your local dealer.
• No spark - electrical system
problem.
• See your local dealer.
• Replace crankshaft key.
Engine runs, but rotor.
won’t turn.
• Crankshaft key broken or not
installed.
Engine runs, rotor turns, but no
material is being discharged.
• Discharge chute clogged.
• Engine not running at full RPM.
• Clear discharge chute.
• Adjust throttle to “Fast”.
Excessive branch vibration when
chipping materials.
• Chipper knives dull.
• Tree limbs and branches are
extremely hard or dried out.
• Sharpen or replace knives.
• Material too dried out or hard
for chipping - use for firewood.
Unusual noise or vibration when
processing material.
• Rotor overloaded with material.
• Allow unit to clear itself before
feeding more material in .
• Follow shut-down procedure and
remove material from unit.
• Sharpen or tighten knives secure
ly.
• Non-organic matter caught in
shredding chamber.
• Chipper knives dull or loose.
• Hammers, broken, bent, or loose. • Check for proper assembly or
replace.
• Hammers frozen on shaft.
• Check for obstructions and
remove debris from hammer
pivot areas.
• Crankshaft bent.
• See your local dealer for
factory authorized repair.
Vacuum not working.
• Hopper lid not in place.
• Material too wet.
• Replace lid on hopper.
• Allow material to dry.
• Hose not attached properly.
• Hose obstructed/damaged.
• Engine not running at full RPM.
• Attach hose per kit instructions.
• Inspect hose - repair or replace.
• Set throttle to “Fast”. See dealer
if problem continues.
20
Troubleshooting & Repair
*2557
*2558
Figure 16. Triangular Hammer Wear Area
Figure 17. J Hammer Wear Area
*2552
REPAIR
Engine Service
Your chipper/shredder engine requires routine mainte-
nance for long-life and trouble-free operation. Consult
the manufacturer’s manual provided with this unit for
specific recommendations and service procedures. In
general, however, your engine requires only the preven-
tive maintenance indicated on the Normal Care
Schedule.
Shredding Hammers
The cutting edges of the shredding hammers may even-
tually wear out, requiring rotation of the hammer, or com-
plete replacement if all cutting edges have been used.
Figure 18. Removing Shredder Hopper
Triangular hammers can be rotated twice after the first
edge dulls, then flipped over once and rotated again for a
total of six cutting edges. J hammers can be flipped over
once (Model 5/14 only), for a total of two cutting edges.
Shredding hammers need to be rotated when shredding
performance becomes sluggish, or when the edges of
the hammers wear down, as shown in figures 15 and 16.
*2559
To inspect and service the shredding hammers, follow
these steps:
1. Turn engine off, allow rotor to stop completely, and
disconnect spark plug wire.
2. See Figure 18. Detach the shredder hopper from the
rotor housing, leaving the liner and handle in place on
the hopper.
3. Remove the rotor housing by unscrewing the
5/16-18 hex nuts that hold it to the fan housing.
See Figure 19.
Figure 19. Removing Rotor Housing
21
Troubleshooting & Repair
4. Using leather work gloves to protect your hands from
sharp edges, carefully rotate the rotor counterclock-
wise until the first worn hammer is at the top position.
6. See Figure 20. Using a 5/16” Allen wrench, remove
the socket head capscrew (A), lockwasher (B), flat
washer (C), and spacer tube (D), being careful to
catch the parts as the capscrew is removed.
5. Before proceeding, note the assembly sequence of
the hammer, spacer, spacer tube, and hardware.
Hammers and spacers must be reassembled in the
same order to ensure proper rotor balance, shredding
efficiency, and safety. See Figure 20 for correct posi-
tion of parts.
7. Wipe the hammer and spacer tube clean, and inspect
for excessive wear.
• If the spacer tube has light grooves worn into it, the
tube may be reused by flipping its position over
when reinstalling it.
**2479
The J Hammer (G) on the opposite
side of the rotor faces outward for
balanced rotation.
G
F
E
D
F
C
B
D
C
B
A
E
A
H
Figure 20. Proper Hammer Assembly
A. Capscrew, hex socket hd. w/patch,
3/8-16 x 2, Gr. 8
B. Lockwasher, split, 3/8
C. Washer, flat, 7/8
E. Spacer, 3/4 O.D., 3/4 long
F. Washer, 3/8 (814 only)
G. J hammer
H. Triangular hammer
D. Spacer, tube
22
Troubleshooting & Repair
• If the spacer tube has deep grooves worn into it,
do not reuse the part - replace it using an exact
factory replacement part only.
*2560
• Rotate or flip the hammer to provide a new cutting
edge, or install a new hammer if worn out or dam-
aged.
• Reassemble the hammer and related parts and
hardware, observing the correct assembly
sequence as shown in figures 19 and 20.
8. Tighten the capscrew securely. For proper assembly,
do not exceed 45 ft. lbs. of torque when tightening.
9. Rotate rotor to expose next shredding hammer, and
repeat steps 6 - 8. When replacing “J” hammers,
observe the correct placement of the blade toward the
inside or outside of the rotor assembly.
10. If chipping knives are to be inspected or serviced, go
to the following section on chipping knives. If service
is to be done on shredding hammers only, proceed to
next step below.
Figure 21. Reassembling Shredder Hammer
11. Reassemble the rotor housing using the 5/16-18 hex
nuts removed earlier.
Top View
Side View
1/16"
Min.
12. Reattach the shredder hopper, repeating the assem-
bly sequence used when the unit was first assem-
bled.
13. Check all hardware for tightness and correct assem-
bly before attempting to start unit. Do not attempt to
start unit if extra hardware is left over after reassem-
bly is complete. Check all hammer assemblies
before proceeding.
30°
*2562
Figure 22. Chipper Knives Minimum Cutting Edge
Chipping Knives
Chipping knives should be resharpened or replaced
when tree limbs and branches require extra force to feed
completely into the chipper block.
*2549
Chipping knives may be resharpened until the distance
between the mounting holes and the top corner of the
blade bevel is 1/16” apart. See Figure 22.
To inspect and service the cutting knives, follow these
steps:
1. Turn engine off, allow rotor to stop completely, and
disconnect spark plug wire.
2. See Figure 18. Detach the shredder hopper from the
rotor housing, leaving the liner and handle in place on
the hopper.
3. Using a 1/2” box wrench or socket, remove the chip-
per cone and mounting casting to expose the oval
chipping block and one chipping knife. See Figure 23.
Figure 23. Removing Chipper Cone to Expose
Chipping Knives.
23
Troubleshooting & Repair
4. Using a 1/4” hex wrench, loosen and remove the two
socket head cap screws holding the chipper knife in
place (access the screw heads from the rear of the
unit), and remove the chipper knife. See Figure 24
for location and temporary removal of an access plug
that permits removal of the capscrews.
5. See Figure 25. Remove both knives through the
opening in the front of the chipper/shredder, and
sharpen equally or replace both blades to ensure
proper balancing and correct chipping action.
Access
Plug
• Slow-speed water-cooled grinding is suggested to
help maintain blade temper and a long-lasting
sharp edge. Rapid grinding and heating of blades
will soften the edges, making repeated sharpening
necessary.
*2445
Figure 24. Chipper Knife Access Plug
• Chipper knives require a 30° bevel on the cutting
edge (as shown in Figure 22) for efficient chipping
action.
*2446
• Contact your local dealer or blade sharpening ser-
vice if you prefer not to sharpen the blades your-
self.
6. Clean the chipper knife mounting areas before rein-
stalling the blades to ensure a flat mounting surface.
7. Install the new chipper knives using the two cap-
screws, and two new lockwashers. Never reinstall
chipper knives using used lockwashers, as used lock-
washers may not hold the knives adequately.
8. Reinstall the access plug (Figure 24) removed earlier
for capscrew access.
Figure 25. Removing Chipper Knife Through Front
Opening
9. Reattach the shredder hopper and chipper cone
using the hardware removed during disassembly.
Replace any hardware that appears to be damaged
or worn excessively.
WARNING
Never use a malfunctioning unit to process
material, even if it appears to be chipping materi-
al adequately. An unexpected kick-back could
occur, causing serious personal injury to you or
bystanders.
10. Check all hardware for tightness and correct assem-
bly before attempting to start your unit. Do not
attempt to start the unit if extra hardware is left over
after reassembly is complete. Check for proper chip-
per knife assembly before proceeding.
Serious equipment damage could also result,
voiding the warranty and requiring extensive
repairs by a qualified service location.
11. Test your unit before attempting to use it to perform
chipping. Start unit, and check for unusual noise or
vibration.
Deflector Shield
• Shut unit off immediately if either situation occurs,
and re-inspect chipping knives to confirm correct
positioning and assembly has been done.
The deflector shield must pivot freely at all times, or
processed material could back up, clogging the unit and
requiring disassembly to clear.
• If assembly is correct, blades may not have been
sharpened evenly, causing an imbalance.
Remove blades and sharpen evenly.
WARNING
Never use the unit unless the deflector shield is
in place and operating properly. Material could
be ejected out of the discharge chute with great
force, injuring you or bystanders.
• Recheck unit. If problem persists, contact your
local dealer for assistance.
24
Options & Accessories
OPTIONS & ACCESSORIES
Several optional items and accessories are available that
can help increase the usefulness and utility of your chip-
per/shredder unit:
Vacuum Attachment
This easy-to-add accessory allows the chipper/ shredder
to be equipped with a vacuum hose and other attach-
ments to help simplify pick up of lightweight materials
such as leaves and grass clippings. It can also be adjust-
ed to vacuum without disturbing landscaping materials
such as decorative rock.
Technical Manuals
Additional Technical Literature Available
Operators Manuals
Additional copies of this manual are available, (and as part
of our product support commitment, we maintain a stock of
printed operators manuals going back many years!)
Parts Manuals
Fully illustrated parts manuals are also available —
these manuals show all of the product’s components in
exploded views (“3D” illustrations which show the relationship of
the parts and how they go together), as well as giving the replace-
ment part numbers and quantities used. Important assembly notes and
special torque values are included in these manuals.
Model:
For the applicable manuals currently available for
your model, contact our Customer Publications
Department at 262-284-8519. Have the informa-
tion listed in the box at the right available when
phoning in your request.
Mfg. No.:
Your Name:
Address:
Please allow 3 to 4 weeks for delivery.
City, State, Zip:
Visa/Mastercard No.:
Card Expiration Date:
25
MANUFACTURING, INC.
500 N Spring Street / PO Box 997
Port Washington, WI 53074-0997
© Copyright 2003 Simplicity Manufacturing, Inc.
All Rights Reserved. Printed in USA.
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