Yard Machines 462 Thru 465 User Manual

OPERATOR’S MANUAL  
Chipper - Shredders  
Model Series  
462 thru 465  
(Model 465A shown)  
IMPORTANT: READ SAFETY RULES AND INSTRUCTIONS CAREFULLY  
This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forest-  
Warning:  
covered, brush-covered or grass-covered land unless the engine’s exhaust system is equipped with a spark arrester meeting  
applicable local or state laws (if any). If a spark arrester is used, it should 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. A spark arrester for the muffler is available through your nearest engine authorized  
service dealer or contact the service department, P.O. Box 368022 Cleveland, Ohio 44136-9722.  
MTD PRODUCTS INC. P.O. BOX 368022 CLEVELAND, OHIO 44136-9722  
PRINTED IN U.S.A.  
FORM NO. 770-10038A  
5/99  
SECTION 3: IMPORTANT SAFE OPERATION PRACTICES  
WARNING: THIS SYMBOL POINTS OUT IMPORTANT SAFETY INSTRUCTIONS WHICH, IF NOT  
FOLLOWED, COULD ENDANGER THE PERSONAL SAFETY AND/OR PROPERTY OF YOURSELF  
AND OTHERS. READ AND FOLLOW ALL INSTRUCTIONS IN THIS MANUAL BEFORE ATTEMPTING  
TO OPERATE YOUR CHIPPER-SHREDDER. FAILURE TO COMPLY WITH THESE INSTRUCTIONS  
MAY RESULT IN PERSONAL INJURY. WHEN YOU SEE THIS SYMBOL: HEED ITS WARNING.  
WARNING:  
The Engine Exhaust from this product contains chemicals known to the  
State of California to cause cancer, birth defects or other reproductive harm.  
DANGER: Your chipper-shredder was built to be operated according to the rules for safe operation in  
this manual. As with any type of power equipment, carelessness or error on the part of the operator can  
result in serious injury. This chipper-shredder is capable of amputating fingers and hands and throwing  
objects. Failure to observe the following safety instructions could result in serious injury or death.  
1. GENERAL OPERATION  
• Read this operator's manual carefully in its entirety  
repair, to protect eyes from foreign objects that may  
be thrown from the machine.  
before attempting to assemble this machine. Read,  
understand, and follow all instructions on the machine  
and in the manual(s) before operation. Be completely  
familiar with the controls and the proper use of the  
machine before operating it. Keep this manual in a  
safe place for future and regular reference and for  
ordering replacement parts.  
• Never place your hands, feet, or any part of your  
body into the shredder hopper, chipper chute,  
discharge opening, or near any moving part while the  
engine is running. Keep clear of the discharge  
opening at all times. If it becomes necessary to push  
material into the chipper chute or shredder hopper,  
use a small diameter stick, NOT YOUR HANDS.  
• Your chipper-shredder is a powerful tool, not a  
plaything. Therefore, exercise extreme caution at all  
times. Your unit has been designed to perform two  
jobs; to chip and shred vegetation found in a normal  
yard. Do not use it for any other purpose.  
• If it is necessary for any reason to unclog the feed  
intake or discharge openings or to inspect or repair  
any part of the machine where a moving part can  
come in contact with your body or clothing, stop the  
machine, allow it to cool, disconnect the spark plug  
wire from the spark plug and move it away from the  
spark plug before attempting to unclog, inspect or  
repair.  
• Never allow children under age 16 to operate the unit.  
Children 16 years and older should only operate the  
unit under close parental supervision. Only  
responsible individuals who are familiar with these  
rules of safe operation should be allowed to use your  
unit.  
• Do not operate unit while under the influence of  
alcohol or drugs.  
• Keep the area of operation clear of all persons,  
particularly small children and pets. Stop the engine  
when they are in the vicinity of the unit. Keep work  
area clean and clear of branches or obstacles which  
could cause you to stumble or fall.  
• The machine should only be operated on a level  
surface. Never operate your unit on a slippery, wet,  
muddy or icy surface. Keep your work area clean and  
clear of branches or obstacles which could cause you  
to stumble and fall. Do not overreach. Maintaining  
proper footing and balance is essential to preventing  
accidents.  
• When feeding material into this equipment, be  
extremely careful that pieces of metal, rocks, bottles,  
cans or other foreign objects are not included.  
Personal injury or damage to the machine could  
result.  
• Do not allow an accumulation of processed material  
to build up in the discharge area as this will prevent  
proper discharge and can result in kickback from the  
chipper chute.  
• Wear sturdy, rough-soled work shoes and close fitting  
slacks and shirt. Shirt and slacks that cover the arms  
and legs and steel-toed shoes are recommended. Do  
not wear loose fitting clothes or jewelry and secure  
hair so it is above shoulder length. They can be  
caught in moving parts. Never operate a unit in bare  
feet, sandals or sneakers. Wear gloves when feeding  
material in the chipper chute or shredder hopper.  
• Keep your face and body back from chipper chute to  
avoid accidental bounce back of any material.  
• Do not transport machine while engine is running.  
• If the cutting mechanism strikes a foreign object or if  
your machine should start making an unusual noise  
or vibration, immediately stop the engine and allow  
the machine to come to a complete stop. Disconnect  
the spark plug wire and move it away from the spark  
plug. Take the following steps.  
• Always wear safety glasses or safety goggles, during  
operation and while performing an adjustment or  
3
Inspect for damage.  
3. SERVICE  
Repair or replace any damaged parts.  
• Use extreme care in handling gasoline and other  
fuels. They are extremely flammable and the  
vapors are explosive.  
Check for any loose parts and tighten to  
assure continued safe operation.  
• Store fuel and oil in approved containers, away  
from heat and open flame, and out of the reach of  
children. Check and add fuel before starting the  
engine. Never remove gas cap or add fuel while the  
engine is running. Allow engine to cool at least two  
minutes before refueling.  
• Never attempt to attach or remove catcher bag  
when engine is running. Shut the engine off and  
wait for the impeller to come to a complete stop.  
The impeller continues to rotate for a few seconds  
after the engine is shut off. Never place any part of  
the body in the impeller area until you are sure the  
impeller has stopped rotating.  
• Replace gasoline cap securely and wipe off any  
spilled gasoline before starting the engine as it may  
cause a fire or explosion.  
• Muffler and engine become hot and can cause a  
burn. Do not touch.  
• Extinguish all cigarettes, cigars, pipes and other  
sources of ignition.  
• Do not allow leaves or other debris to build up on  
engine's muffler. The debris could ignite and cause  
a fire.  
• Never refuel unit indoors because flammable  
vapors will accumulate in the area.  
• Do not attempt to shred or chip material larger than  
specified in this manual. Personal injury or damage  
to the machine could result.  
• Never store the machine or fuel container inside  
where there is an open flame or spark such as a  
gas hot water heater, space heater, clothes dryer  
or furnace.  
• Do not operate engine if air cleaner or cover over  
carburetor air intake is removed, except for  
adjustment. Removal of such parts could create a  
fire hazard.  
• Never run your machine in an enclosed area as the  
exhaust from the engine contains carbon  
monoxide, which is an odorless, tasteless and  
deadly poisonous gas.  
• Only use accessories approved for this machine by  
the manufacturer. Read, understand, and follow all  
instructions provided with the approved accessory.  
• To reduce fire hazard, keep engine and muffler free  
of leaves, grass, and other debris build-up. Clean  
up fuel and oil spillage. Allow unit to cool at least 5  
minutes before storing.  
• If situations occur which are not covered by this  
manual, use care and good judgment. Contact your  
dealer for assistance.  
• Before cleaning, repairing, or inspecting, make  
certain the impeller and all moving parts have  
stopped. Disconnect the spark plug wire and keep  
wire away from spark plug to prevent accidental  
starting. Do not use flammable solutions to clean  
air filter.  
• Keep discharge chute deflector, chipper chute  
door, and all other guards and safety devices in  
place and operating properly.  
• Only operate unit in good daylight. Do not operate  
unit at night or in dark areas where your vision may  
be impaired.  
• Check the blade and engine mounting screws at  
frequent intervals for proper tightness. Also visually  
inspect blades for wear and/or damage (e.g., bent,  
cracked). Replace with blades which meet original  
equipment specifications.  
2. CHILDREN  
Tragic accidents can occur if the operator is not alert to the  
presence of small children. Children are often attracted to  
the chipper-shredder and the chipping and shredding  
activity. Never assume that children will remain where you  
last saw them.  
• Keep all nuts, bolts, and screws tight to be sure the  
equipment is in safe working condition.  
• Keep children out of the work area and under the  
watchful eye of a responsible adult other than the  
operator.  
• Never tamper with safety devices. Check their  
proper operation regularly.  
• After striking a foreign object, immediately stop the  
engine, disconnect the spark plug wire from the  
spark plug, and thoroughly inspect the unit for any  
damage. Repair damage before starting and  
operating unit.  
• Be alert and turn the unit off if a child enters the  
area.  
• Never allow children under the age of 16 to operate  
the chipper-shredder.  
• Do not alter or tamper with the engine's governor  
setting. The governor controls the maximum safe  
operating speed of the engine. Overspeeding the  
engine is dangerous and will cause damage to the  
engine and to other moving parts of the machine.  
WARNING - YOUR RESPONSIBILITY: Restrict the use of this power machine to persons who  
read, understand and follow the warnings and instructions in this manual and on the machine.  
4
DANGER  
TO AVOID SERIOUS INJURY:  
DO NOT DEPOSIT BRANCHES LARGER THAN 1/2 INCH DIAMETER INTO THIS HOPPER.  
WEAR APPROVED SAFETY GLASSES, GLOVES AND EAR PROTECTION.  
AVOID LOOSE FITTING CLOTHING.  
RKeeaedpthheanOdws,nfeerest,Mfaacneuaalnbdecfolortehisntagrotinugt oafnsdhuresdindgerthhisopcpheiprpinelre/stharnedddcehri.pper chute inlet.  
Keep hands, feet, face and clothing away from discharge area and moving parts.  
• Keep hands and feet out of discharge opening when chipper/shredder is running. The  
rotating cutting blades inside opening will cause serious personal injury.  
• Do noKtetreapnsbpyosrtat nudneitrws,itchheilndgreinne, arunndnpinegts. away from operating and discharge  
• If chipper/shredder jams or becomes clogged, shut engine off right away and wait for  
all moving parts to come to a complete stop. Disconnect the spark plug wire and prevent  
it from touching the sparkplug.Useonlyalongwoodenstick(orlong-handledshovel)to  
clear away discharged materials or blockages.  
Keepallshieldsandguardsinplaceandsecurelyattached.
• DO NOT use hands or feet to clear material from the discharge area or discharge opening.  
DONOTinstallparts,orremove,adjust,orservicethedischargescreenoranyotherpartwhile
thechipper/shredderisrunning.DONOToperatethechipper/shredderonunevenground,orona
paved,gravel, orhardsurface.DONOTrunengineinanenclosedarea-exhaustgascontains
poisonous carbon monoxide fumes.  
WA R N I N G  
TO AVOID A FIRE HAZARD, KEEP LEAVES, GRASS, AND OTHER  
STIBLE  
COMBUSTIBLE  
MATERIALS AWAY FROM HOT ENGINE AND MUFFLER.  
WARNING: DO NOT OPERATE  
THIS MACHINE UNLESS THE  
CHUTE DEFLECTOR HAS BEEN  
PROPERLY INSTALLED AND IS  
SECURED WITH THE HAND  
KNOBS.  
DANGER  
!
ROTATING CUTTING BLADES.  
KEEP HANDS AND FEET OUT  
OF OPENING WHILE MACHINE  
IS RUNNING.  
Figure 2 Safety labels found on your unit  
5
SECTION 4: SET-UP INSTRUCTIONS  
2. Remove six hex nuts (A) and six washers (B)  
from the weld studs on the flail housing. Leave  
the support plate in place on the weld studs. See  
Figure 4.  
IMPORTANT: After assembly, service engine  
with gasoline, and check oil level as instructed in the  
separate engine manual packed with your unit.  
NOTE: All references to right or left side of the  
snow thrower are determined from behind the unit in  
the operating position.  
Flail Housing  
UNPACKING  
Weld Stud  
Washer (B)  
1. Remove staples, break glue on the top flaps, or  
cut tape at carton end and peel along top flap to  
open carton.  
Hex Nut (A)  
Hopper  
2. Remove any loose parts included with unit (i.e.,  
Assembly  
operator’s manual, etc.)  
3. Cut corners and lay end of carton down flat.  
4. Remove packing material.  
Support Plate  
5. Roll unit out of carton. Check carton thoroughly  
for loose parts.  
Figure 4  
TOOLS REQUIRED FOR ASSEMBLY  
3. Place hopper assembly into position in front of  
flail housing. Align holes in hopper assembly  
collar with weld studs on flail housing.  
• Two Adjustable Wrenches  
LOOSE PARTS IN CARTON  
4. Slide hopper assembly onto weld studs.  
5. Replace the washers (B) and the hex nuts (A).  
6. Tighten the hex nuts (A).  
A
B
C
D
Hopper Assembly  
Discharge Chute  
Chipper Chute (463 or 465)  
Bag  
7. Lift hopper until it clicks into the raised position.  
8. Remove wing knobs (C) from each side of the  
discharge chute opening on the chipper  
shredder. See Figure 5.  
ATTACHING THE HOPPER ASSEMBLY  
AND DISCHARGE CHUTE  
All Models  
Hex Lock Nut (D)  
1. Pull the spark plug wire off of the spark plug.  
Hex Bolt (F)  
See Figure 3.  
Spacers (E)  
Spark Plug Wire  
Hinge  
Wing Knob (C)  
Figure 3  
Discharge  
Chute  
Figure 5  
6
9. Use wrenches to remove hex lock nut (D).  
Remove two spacers (E), and hex bolt (F) from  
top of the housing assembly. For easy  
assembly, do not remove the second spacer  
from the hex bolt. See Figure 5.  
4. Replace the three cupped washers (cupped side  
against the chipper chute) and hex nuts that you  
removed in step 1. Do not tighten the nuts at this  
time. Make sure to place the cupped side of the  
washer against the chipper chute.  
5. Your unit is shipped with one end of the brace  
already secured to the lower frame. Loosen the  
bolts securing the brace to the frame.  
10. Place the discharge chute in position on the  
discharge opening. Insert hex bolt (F) and  
spacer (E) through hinge on discharge chute  
and housing (spacer fits inside of hinge).  
6. Align the holes on the chute with the holes on  
the brace.  
11. Place second spacer (E) over hex bolt (F) inside  
the other half of the hinge. Secure with hex lock  
nut (D). Tighten securely.  
7. Attach brace to chipper chute with the hardware  
removed earlier from the brace. Tighten  
securely. See Figure 6.  
12. Secure both sides of discharge chute to flail  
housing using wing knobs (C). Tighten wing  
knobs.  
8. Tighten the bolts securing the brace to the  
frame.  
9. Tighten the three nuts on the weld studs holding  
the chipper chute to the flail housing.  
ATTACHING THE CHIPPER CHUTE  
(Model 463 or 465 chipper shredders)  
ATTACHING THE BAG  
All Models  
1. To attach the bag, place the opening of the bag  
over the chute deflector so it completely covers  
the chute deflector. See Figure 7.  
Chipper  
Chute  
2. Depress the plunger on the drawstring, and pull  
on the drawstring until the bag is tight around the  
chute opening. Release plunger to lock it into  
position. See Figure 7.  
Weld Stud (A)  
Weld Stud (A)  
Hex Bolt  
Flat Washer  
Hex Nut  
Frame  
Brace  
Weld Stud (A)  
Figure 6  
1. Remove the three cupped washers and hex nuts  
from the weld studs (A) beside the opening on  
the left side of the housing. See Figure 6.  
2. Remove the two hex bolts, lock nuts, and flat  
washers from the two holes on the upper end of  
the brace.  
Figure 7  
3. Place the chipper chute over the weld studs so  
the slot on the chute is towards the bottom. Align  
the three holes on the chute with the three weld  
studs.  
7
SECTION 5: CONTROLS  
SECTION 6: OPERATION  
STOPPING ENGINE  
Move throttle control lever to STOP position.  
Disconnect spark plug wire and move away from  
spark plug to prevent accidental starting.  
Release  
Rod  
WARNING: Before using your chipper-  
shredder, again refer to the safety  
practices of this manual. Always be  
careful.  
GASOLINE AND OIL FILL-UP  
See engine manual included with your unit  
Choke  
Lever  
• If the unit runs out of gas as it is shredding or  
chipping, it may be necessary to unclog the  
unit before it can be restarted. Refer to  
Removing the Flail Screen in Maintenance  
section.  
Throttle  
Control  
Starter  
Handle  
WARNING: Always stop the engine and  
disconnect the spark plug wire before  
performing any maintenance or adjust-  
ments.  
Figure 8  
Release Rod: Used to release the hopper when  
raising or lowering. See Figure 8.  
STARTING ENGINE  
Choke Lever: Used to enrich the fuel mixture in  
WARNING: Be sure no one other than  
the operator is standing near the chipper-  
shredder while starting or operating. Do  
not operate this chipper-shredder unless  
the chute deflector has been properly  
installed and is secured with the hand  
knobs.  
the carburetor when starting a cold engine.  
Starter Handle: Used to manually start the  
engine.  
Hopper Assembly: Allows leaves and small  
branches up to 1/2” diameter to be fed into the  
impeller for chipping and shredding. Lower the  
hopper to collect raked material for shredding.  
Throttle Control: Regulates speed of the  
engine.  
NOTE: To prevent the unit from sliding, place your  
foot firmly against the wheel.  
1. Attach spark plug wire and rubber boot to spark  
plug.  
Chipper Chute: Allows bulky vegetation like  
stalks or heavy branches to be fed into the impeller  
for chipping and shredding. Maximum diameter is 3”  
on model 463 or 465 and 2” on model 462.  
2. Move choke lever to CHOKE position (if  
equipped).  
3. If restarting a warm engine after a short  
shutdown, move choke lever to No Choke  
position.  
Catcher Bag (not shown): Used to collect the  
shredded material.  
4. Grasp starter handle and pull rope out slowly  
until engine reaches start of compression cycle  
(rope will pull slightly harder at this point). Let  
the rope rewind slowly.  
8
5. Pull rope with a rapid full arm stroke. Let rope  
return to starter slowly.  
LOWERING THE HOPPER ASSEMBLY  
1. To lower the hopper assembly, use one hand to  
grasp the hand-hold at the top of the hopper  
assembly and lift slightly.  
6. When engine starts, move choke lever to half  
choke position until engine runs smoothly and  
then to No Choke position.  
2. Pull out on the release rod, and lower the hopper  
assembly to the ground.  
7. If engine fails to start after three pulls, move  
choke lever to No Choke position and pull starter  
rope again.  
NOTE: For best performance, it is important to  
keep the shredding blade and the chipper blades  
sharp. If the composition of the material being  
discharged changes (becomes stringy, etc.) or if the  
rate at which the material is discharged slows down  
considerably, it is likely that the shredding blade and/  
or chipper blades are dull and need to be sharpened  
or replaced. Refer to Maintenance section.  
8. If engine fires, but does not continue to run,  
move choke lever to Full Choke position and pull  
rope again.  
9. Move choke lever to OFF position as engine  
warms up.  
NOTE : A noise will be heard when finding the start  
of the compression cycle. This noise is caused by  
the flails and fingers which are part of the shredding  
mechanism falling into place, and should be  
expected. In addition, the flails and fingers will be  
noisy after the engine is started, until the impeller  
reaches full speed.  
IMPORTANT: There is a flail screen located  
inside the housing in the discharge area. If the flail  
screen becomes clogged, remove and clean as  
instructed in the Maintenance section.  
WARNING: The chipper-shredder dis-  
charges materials with considerable  
velocity. Keep away from the area around  
the discharge chute. Always stop the  
engine and disconnect spark plug wire  
when removing or attaching the bag,  
changing containers, or removing the  
shredded material. Wear safety glasses  
and gloves whenever using your chipper-  
shredder.  
USING YOUR CHIPPER-SHREDDER  
WARNING: Do not attempt to shred or  
chip any material other than vegetation  
found in a normal yard (i.e., branches,  
leaves, twigs, etc.).  
• Leaves and small branches up to 1/2"  
diameter (maximum) can be fed into the  
hopper assembly when it is in the raised or  
lowered position.  
SECTION 7: MAINTENANCE  
• For model 462, bulky material, such as stalks  
or heavy branches, up to 2” in diameter  
should be fed into the chipper chute.  
GENERAL RECOMMENDATIONS  
• Always observe safety rules when performing  
any maintenance.  
• For model 463 or 465, bulky material, such as  
stalks or heavy branches, up to 3” in diameter  
should be fed into the chipper chute.  
• The warranty on this chipper shredder does  
not cover items that have been subjected to  
operator abuse or negligence. To receive full  
value from the warranty, operator must  
maintain the chipper shredder as instructed in  
this manual.  
WARNING: Do not put material larger  
than is specified into the hopper, and/or  
into the chipper chute. Personal injury or  
damage to the machine could result.  
• Periodically check all fasteners and make sure  
these are tight.  
• If it becomes necessary to push material into  
the chipper-shredder, use a small diameter  
stick -- NOT YOUR HANDS. The stick should  
be small enough that it will be ground up if it  
gets into the impeller assembly.  
WARNING: Always stop the engine and  
disconnect the spark plug wire before  
performing any maintenance or adjust-  
ments. Never remove discharge chute  
until the engine has completely stopped.  
9
WARNING: Temperature of muffler and  
AIR CLEANER  
nearby areas may exceed 150o F(65oC).  
The air cleaner prevents damaging dirt, dust, etc.,  
from entering the carburetor and being forced into  
the engine and is important to engine life and  
performance. Never run the engine without air  
cleaner completely assembled.  
Avoid these areas.  
LUBRICATION  
• Service the air cleaner according to the  
separate engine owner’s guide supplied with  
your chipper shredder.  
Lubricate the pivot points on the release rod bracket,  
hopper assembly, and chute deflector once a  
season using a light oil.  
CARBURETOR  
CLEANING  
WARNING: If any adjustments are made  
to the engine while the engine is running (e.g.  
carburetor), keep clear of all moving parts.  
Be careful of heated surfaces and muffler.  
• Clean engine periodically. Remove dirt and  
debris with a cloth or brush.  
• Frequently remove leaves, dirt and debris  
from cooling fins, air intake screen and levers  
and linkage. This will help ensure adequate  
cooling and correct engine speed.  
• Service the carburetor according to the  
separate engine owner’s guide supplied with  
your chipper shredder.  
• Clean the chipper shredder by running water  
from a hose through the hopper assembly and  
chipper chute with the engine running. Allow  
the chipper-shredder to dry thoroughly.  
ENGINE SPEED  
NOTE: Cleaning with a forceful spray of water is  
not recommended as water could contaminate the  
fuel system.  
• The engine speed on your chipper-shredder  
has been set at the factory. Do not attempt to  
increase engine speed or it may result in  
personal injury. If you believe the engine is  
running too fast or too slow, take your chipper-  
shredder to the nearest service center for  
repair and adjustment.  
• Wash the bag periodically with water. Allow to  
dry thoroughly in the shade. Do not use heat.  
ENGINE OIL  
The engine oil is the most important “insurance  
policy” your new chipper shredder has. It protects it  
from excess wear and tear and helps the cooling  
process. It is important that you maintain the engine  
oil at the proper level and that it is changed on a  
regular basis.  
SPARK PLUG  
• Service the spark plug according to the  
separate engine owner’s guide supplied with  
your chipper shredder.  
REMOVING THE FLAIL SCREEN  
• Service the engine oil according to the  
separate engine owner’s guide supplied with  
your chipper shredder.  
If the discharge area becomes clogged, remove the  
flail screen and clean area as follows: See Figure 9.  
1. Stop engine, make certain the chipper-shredder  
has come to a complete stop and disconnect  
spark plug wire from the spark plug before  
unclogging the chute.  
To Drain Oil  
Drain oil while engine is warm. Follow the  
instructions given below.  
• Remove oil drain plug or cap. The plug or cap  
is located in front of the engine or under the  
frame. Catch oil in a suitable container.  
2. Remove the two hand knobs on each side of the  
discharge chute (also called the chute deflector).  
3. Lift the discharge chute up, and keep it out of  
the way.  
• When engine is drained of all oil, replace drain  
plug or cap securely.  
4. Remove two hairpin clips from the clevis pins  
which extend through the housing. Remove the  
clevis pins.  
• Refill with fresh oil.  
• Replace dipstick.  
5. Pull the flail screen from inside the housing.  
6. Clean the screen by scraping or washing with  
water.  
10  
7. Reinstall the screen.  
8. Put the discharge chute back to its original  
position and tighten the hand knobs.  
Slot  
NOTE: Be certain to reassemble the flail screen  
with the curved side down.  
Blade  
Clevis  
Pin  
Hex Nuts  
Washers  
Discharge  
Chute  
Figure 10  
6. Remove the other blade in the same manner.  
7. Replace or sharpen blades.  
Flail  
Screen  
Chipper Chute  
8. If sharpening, make certain to remove an equal  
amount from each blade.  
Hairpin  
Clip  
9. Reassemble in reverse order. Make certain  
blades are reassembled with the sharp edge  
facing the direction shown in Figure 10 (sharp  
edge is assembled toward the slotted opening at  
the bottom).  
Hand Knobs  
Figure 9  
SHARPENING OR REPLACING THE  
CHIPPER BLADES  
10. Torque bolts and nuts to 250-350 inch-pounds.  
All models  
SHARPENING OR REPLACING THE  
SHREDDER BLADE  
1. Disconnect spark plug wire and move it away  
from spark plug.  
The shredder blade may be removed for sharpening  
or replacement as follows. See Figure 11.  
2. Remove the flail screen as instructed in previous  
section.  
1. Disconnect spark plug wire and move it away  
from spark plug.  
3. Using a wrench, remove the chipper chute by  
removing three hex nuts and washers.  
2. Lower the hopper assembly. Block up the  
housing.  
Model 463 or 465  
4. Use an adjustable wrench, to remove the brace  
holding the chipper chute to the frame by  
removing the hex bolts.  
Allen Screws  
Weld  
Bolt  
All models  
5. Rotate the impeller assembly by hand until you  
locate one of the two chipper blades in the  
chipper chute opening. Remove the blade, using  
a 3/16" allen wrench on the outside of the blade  
and an adjustable wrench on the impeller  
assembly (inside the housing). See Figure 10.  
Pipe  
Blade  
Torque Wrench  
Figure 11  
11  
3. Remove the six hex lock nuts and flat washers  
from the housing weld bolts using a 1/2" wrench.  
Separate the chipper-shredder into two halves.  
SECTION 8: OFF-SEASON  
STORAGE  
Prepare your chipper-shredder for storage at the end  
of the season or if the unit will not be used for 30  
days or more. The following steps should be taken  
to prepare your shredder for storage.  
4. Remove the support plate.  
NOTE: When reassembling, make certain the  
embossed tab faces inward towards the impeller.  
5. Remove the two hand knobs and cupped  
washers which secure the discharge chute.  
Raise the discharge chute.  
1. Clean and lubricate the shredder thoroughly.  
2. Refer to engine manual for correct engine  
storage instructions.  
6. Insert a 1/2" or 3/4" diameter pipe through the  
flail screen into the impeller to keep it from  
turning, or remove the flail screen and insert a  
piece of wood (2 x 4) into the chute opening.  
3. If storing an unventilated or metal storage shed,  
coat metal parts with a light oil or silicone to  
prevent rust.  
4. Store in a cool dry place. Do not store next to  
corrosive materials such as fertilizer.  
7. Remove the two outside screws on the blade,  
using a 3/16" allen wrench and a 1/2" wrench.  
8. Remove the blade by removing the center bolt,  
lock washer and flat washer.  
WARNING: Use caution when removing  
the blade to avoid contacting the weld bolts  
on the housing.  
9. When sharpening the blade, follow the original  
angle of grind as a guide. It is extremely  
important that each cutting edge receives an  
equal amount of grinding to prevent an  
unbalanced blade.  
10. An unbalanced blade will cause excessive  
vibration when rotating at high speeds and may  
cause damage to the unit. The blade can be tested  
for balance by balancing it on a round shaft  
screwdriver or nail. Remove metal from the heavy  
side until it is balanced evenly. See Figure 12.  
11. When reassembling the blade, tighten center  
bolt to between 550 and 700 inch-pounds and  
the two outer bolts to between 250 and 350  
inch-pounds, or lacking torque wrench, tighten  
securely. See Figure 11.  
1. Insert screw driver through hole  
2. Blade should be parallel to ground  
Screw  
Blade  
Driver  
Ground  
Figure 12  
12  
SECTION 9: TROUBLE SHOOTING GUIDE  
Trouble  
Possible Cause(s)  
Corrective Action  
Engine fails to start  
Dirty air cleaner.  
Refer to the engine manual packed with your unit.  
Move switch to ON position.  
Connect wire to spark plug.  
Obstruction lodged in impeller. Stop immediately and  
disconnect spark plug wire. Remove lodged object.  
Fill tank with clean, fresh gasoline. Fuel will not last  
over thirty days unless a fuel stabilizer is used.  
Choke not in ON position.  
Spark plug wire disconnected.  
Cannot pull recoil cord.  
Fuel tank empty, or stale fuel.  
Fuel shut-off valve closed (if so Open fuel shut-off valve.  
equipped).  
Faulty spark plug.  
Clean, adjust gap or replace.  
Loss of power; operation  
erratic  
Spark plug wire loose.  
Unit running on CHOKE.  
Blocked fuel line or stale fuel.  
Connect and tighten spark plug wire.  
Move choke lever to OFF position.  
Clean fuel line; fill tank with clean, fresh gasoline. Fuel  
will not last over thirty days unless a fuel stabilizer is  
used.  
Water or dirt in fuel system.  
Disconnect fuel line at carburetor to drain fuel tank.  
Refill with fresh fuel.  
Carburetor out of adjustment.  
Dirty air cleaner.  
Carburetor not adjusted prop-  
erly.  
Refer to the engine manual packed with your unit.  
Refer to the engine manual packed with your unit.  
Refer to the engine manual packed with your unit.  
Refer to the engine manual packed with your unit.  
Fill crankcase with proper oil.  
Engine overheats  
Dirty air cleaner.  
Engine oil level low.  
Loose parts or damaged  
impeller.  
Too much vibration  
Stop engine immediately and disconnect spark plug  
wire. Have unit serviced by an authorized service  
dealer.  
Unit does not discharge  
Discharge chute clogged.  
Stop engine immediately and disconnect spark plug  
wire. Clean flail screen and inside of housing. See  
Maintenance section of this manual.  
Always run engine at full throttle  
Stop engine immediately and disconnect spark plug  
wire. Remove lodged object.  
Low engine RPM.  
Foreign object lodged in  
impeller.  
Rate of discharge slows  
Low engine RPM.  
Always run engine at full throttle  
considerably or composition Shredding blade and/or chipper Replace shredding and chipper blades or see your  
of discharged material  
changes  
blades dull.  
authorized service dealer.  
Note: For repairs beyond the minor adjustments above, contact your local authorized service dealer.  
Tow Hitch Kit (Optional)  
Model 290-010-000  
REF.  
NO.  
1
2
3
4
5
6
7
PART  
NO  
DESCRIPTION  
Tow Bar Tongue  
Tow Bar Base  
Hex Cap Screw 3/8-16  
Clevis Pin  
Clevis Pin  
Hex Nut 3/8-16  
Spring Pin  
Flat Washer .411 x 1.25 x 1.00  
Lock Washer 3/8  
681-0133  
681-0134  
710-3001  
711-0299  
711-0835  
712-0798  
732-0194  
736-0133  
736-0169  
8
9
13