Yard Machines 462B, 463C Operator's Manual

O

PERATOR’S

M

ANUAL

Chipper - Shredders

Model Series

462 thru 465

(Model 465A shown)

IMPORTANT: READ SAFETY RULES AND INSTRUCTIONS CAREFULLY

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.

This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forest-

FORM NO. 770-0371A

SECTION 1: 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
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.

• 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.

• 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.

• 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.

• 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.

• 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.

• Always wear safety glasses or safety goggles,
during operation and while performing an
adjustment or repair, to protect eyes from foreign
objects that may be thrown from the machine.

• 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.

• 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.

• Do not operate unit while under the influence of
alcohol or drugs.

• 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.

• 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.

• 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.

2

• 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.

• Inspect for damage.

• Repair or replace any damaged parts.

• Check for any loose parts and tighten to assure
continued safe operation.

• 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.

• Muffler and engine become hot and can cause a
burn. Do not touch.

• Do not allow leaves or other debris to build up on
engine's muffler. The debris could ignite and cause a
fire.

• Do not attempt to shred or chip material larger than
specified in this manual. Personal injury or damage
to the machine could result.

• 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.

• Only use accessories approved for this machine by
the manufacturer. Read, understand, and follow all
instructions provided with the approved accessory.

• If situations occur which are not covered by this
manual, use care and good judgment. Contact your
dealer for assistance.

• 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.

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 children out of the work area and under the
watchful eye of a responsible adult other than the
operator.

• 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.

3. SERVICE

• Use extreme care in handling gasoline and other
fuels. They are extremely flammable and the vapors
are explosive.

• 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.

• Replace gasoline cap securely and wipe off any
spilled gasoline before starting the engine as it may
cause a fire or explosion.

• Extinguish all cigarettes, cigars, pipes and other
sources of ignition.

• Never refuel unit indoors because flammable vapors
will accumulate in the area.

• 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.

• 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.

• 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.

• 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.

• 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.

• Keep all nuts, bolts, and screws tight to be sure the
equipment is in safe working condition.

• 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.

• 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:

understand and follow the warnings and instructions in this manual and on the machine.

Restrict the use of this power machine to persons who read,

3

SECTION 2: SAFETY LABELS FOUND ON YOUR UNIT:

D ANGER

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.

• Read the Owner's Manual before starting and using this chipper/shredder.

• Keep hands, feet, face and clothing out of shredder hopper inlet and chipper 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 not transport unit with engine running.

• Keep bystanders, children, and pets away from operating and discharge

• If chipper/shredder jams or becomes clogged, shut engine off right away and wait for

• 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

all moving parts to come to a complete stop. Disconnect the spark plug wire and prevent
it from touching the spark plug. Use only a long wooden stick (or long-handled shovel) to

it from touching the spark plug. Use only a long wooden stick (or long-handled shovel) to
clear away discharged materials or blockages.

clear away discharged materials or blockages.

• Keep all shields and guards in place and securely attached.

• Keep all shields and guards in place and securely attached.

• DO NOT use hands or feet to clear material from the discharge area or discharge opening.

• DO NOT use hands or feet to clear material from the discharge area or discharge opening.

• DO NOT install parts, or remove, adjust, or service the discharge screen or any other part while

• DO NOT install parts, or remove, adjust, or service the discharge screen or any other part while
the chipper/shredder is running. DO NOT operate the chipper/shredder on uneven ground, or on a

the chipper/shredder is running. DO NOT operate the chipper/shredder on uneven ground, or on a
paved, gravel, or hard surface. DO NOT run engine in an enclosed area-exhaust gas contains

paved, gravel, or hard surface. DO NOT run engine in an enclosed area-exhaust gas contains
poisonous carbon monoxide fumes.

poisonous carbon monoxide fumes.

TO AVOID A FIRE HAZARD, KEEP LEAVES, GRASS, AND O THER COMBUSTIBLE

TO AVOID A FIRE HAZARD, KEEP LEAVES, GRASS, AND O THER COMBUSTIBLE

MA TERIALS AWAY FROM HO T ENGINE AND MUFFLER.

MA TERIALS AWAY FROM HO T ENGINE AND MUFFLER.

WARNING: DO NOT OPERATE
THIS MACHINE UNLESS THE
CHUTE DEFLECTOR HAS BEEN
PROPERLY INSTALLED AND IS
SECURED WITH THE HAND

KNOBS.

WARNING

WARNING

AC

AC

0158A

0158A

DANGER

!

ROTATING CUTTING BLADES.
KEEP HANDS AND FEET OUT
OF OPENING WHILE MACHINE
IS RUNNING.

9342 AC

4

SECTION 3: FINDING YOUR MODEL NUMBER

This Operator’s Manual is an important part of your new chipper-shredder. It will help you assemble, prepare
and maintain your chipper-shredder. Please read and understand what it says.
Before you prepare your chipper-shredder for its first use, please locate the model plate and copy the
information from it in this Operator’s Manual. The information on the model plate is very important if you need
help from your dealer or the MTD Customer Support Department.

• Every chipper shredder has a model plate. You can locate it by standing behind the unit in the
operating position and looking down at the frame next to the engine.

• The model plate will look like this.

This is where your model number will be.

XXX-X-XXX-X-XXX XXXXXXXXXXX

This is where your serial number will be.

Copy the model number here:

MTD PRODUCTS INC

CLEVELAND, OHIO 44136

Copy the serial number here:

SECTION 4: CALLING CUSTOMER SUPPORT

If you are having difficulty assembling this product or if you have any question regarding the controls,
operation or maintenance of this chipper shredder, please call the Customer Support Department. You can
reach them by calling:

1-800-800-7310

Before you call, make sure that you have both your model and serial number ready. By having the model
and serial number ready, you help the Customer Support Representative give you faster service. To find
your units model and serial number, see SECTION 3: FINDING YOUR MODEL NUMBER.

SECTION 5: UNPACKING INSTRUCTIONS

REMOVE UNIT FROM CARTON

• Remove staples, break glue on top flaps, or cut tape at carton end and peel along top flap to open
carton.

• Remove loose parts included with unit (i.e., owner’s manual, etc.).

• Cut along dotted lines and lay carton down flat.

• Remove packing material.

• Roll or slide unit out of carton. Check carton thoroughly for loose parts.

5

SECTION 6: SET-UP INSTRUCTIONS

This guide covers models 462B 5 H.P. thru 465A
8 H.P. chipper shredders. Much of this guide
pertains to both models. However, there are
some areas where only one model is covered.
Use only the information that is appropriate for
your model.

Start with Step 1 to set-up you new
chipper shredder.

All models.

1. Pull the spark plug wire off of the spark plug.

See Figure 1

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 2

3. Place hopper assembly into position in front of
flail housing. Align holes in hopper assembly
collar with weld studs on flail housing.

4. Slide hopper assembly onto weld studs.

5. Replace the washers (B) and the hex nuts (A).

6. Tighten the hex nuts (A).

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 3

9. Use two 7/16" 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.

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).

11. Place second spacer (E) over hex bolt (F)
inside the other half of the hinge. Secure with
hex lock nut (D). Tighten securely.

12. Secure both sides of discharge chute to flail
housing using wing knobs (C). Tighten wing
knobs.

Hopper

Assembly

Spark Plug Wire

Figure 1

Flail Housing

Weld Stud

Washer (B)

Hex Nut (A)

Support Plate

Figure 2

Hex Lock Nut (D)

Hex Bolt (F)

Spacer (E)

Hinge

Wing Knob (C)

Discharge
Chute

Figure 3

6

A TT ACHING THE CHIPPER CHUTE
(Model 465A 8 H.P. c hipper shredder only)

Chipper
Chute

Weld Stud (A)

Weld Stud (A)

Hex Bolt

Flat Washer

Hex Nut

Frame

Brace

Weld Stud (A)

Figure 4

1. Remove the three cupped washers and hex
nuts from the weld studs beside (A) the opening
on the left side of the housing. See Figure 4

2. Remove the two hex bolts, lock nuts, and flat
washers from the two holes on the upper end of
the brace.

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.

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.

6. Align the holes on the chute with the holes on
the brace.

7. Attach brace to chipper chute with the hardware
removed earlier from the brace. See the
illustration above for proper order. Tighten.

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.

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 5

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 5

Figure 5

3. Fill engine with oil as instructed in separate
engine manual included with your unit.

7

SECTION 7: CONTROLS

Release

Knob

Choke
Lever

Throttle
Control

Figure 6

Release Knob:

when raising or lowering.

Choke Lever:

the carburetor when starting a cold engine.

Starter Handle:

engine.

Hopper Assembly:

branches up to 1” diameter to be fed into the
impeller for chipping and shredding. Lower the
hopper to collect raked material for shredding.

Used to release the hopper

Used to enrich the fuel mixture in

Used to manually start the

Allows leaves and small

Throttle Control (if equipped):

speed of the engine.

Chipper Chute:

stalks or heavy branches to be fed into the impeller
for chipping and shredding. Maximum diameter is
3” on model 465A and 2” on model 462B.

Allows bulky vegetation like

Catcher Bag (Not Shown):

the shredded material.

Starter
Handle

Regulates

Used to collect

SECTION 8: OPERATION

STOPPING ENGINE

Move throttle control lever to STOP position.
Disconnect spark plug wire and move away from
spark plug to prevent accidental starting.

WARNING

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

• 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.

STARTING ENGINE

WARNING:

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.

NOTE:

foot firmly against the wheel.

1. Attach spark plug wire and rubber boot to spark

2. Move starter switch to ON position.

3. Move choke lever to CHOKE position.

4. If restarting a warm engine after a short

5. Grasp starter handle and pull rope out slowly

6. Pull rope with a rapid full arm stroke. Let rope

7. When engine starts, move choke lever to half

8. If engine fails to start after three pulls, move

9. If engine fires, but does not continue to run ,

To prevent the unit from sliding, place your

plug.

shutdown , move choke lever to No Choke

position.

until engine reaches start of compression cycle
(rope will pull slightly harder at this point). Let
the rope rewind slowly.

return to starter slowly.

choke position until engine runs smoothly and
then to No Choke position.

choke lever to No Choke position and pull
starter rope again.

move choke lever to Full Choke position and
pull rope again.

:

Before using your chipper-

Be sure no one other than

8

10. Move choke lever to OFF position as engine
warms up.

NOTE :

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.

A noise will be heard when finding the

USING Y OUR CHIPPER-SHREDDER

WARNING

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.

• For model 462B (5 H.P.), bulky material, such

as stalks or heavy branches, up to 2” in
diameter should be fed into the chipper chute.

• For model 465A (8 H.P.), bulky material, such

as stalks or heavy branches, up to 3” in
diameter should be fed into the chipper chute.

WARNING:

than is specified into the hopper, and/or
into the chipper chute. Personal injury or
damage to the machine could result.

• 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.

:

Do not attempt to shred or

Do not put material larger

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.

2. Pull out on the release knob, and lower the
hopper assembly to the ground.

NOTE:

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.

For best performance, it is important to

IMPORTANT:

inside the housing in the discharge area. If the flail
screen becomes clogged, remove and clean as
instructed in the Maintenance section.

WARNING:

discharges 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 chipper­shredder.

There is a flail screen located

The chipper-shredder

SECTION 9: MAINTENANCE

GENERAL RECOMMENDATIONS

• Always observe safety rules when performing
any maintenance.

• 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.

• Periodically check all fasteners and make
sure these are tight.

WARNING:

disconnect the spark plug wire before

performing any maintenance or
adjustments. Never remove discharge

chute till the engine has completely

stopped.

WARNING:

nearby areas may exceed 150
Avoid these areas.

LUBRICATION

Lubricate the pivot points on the release knob
bracket, hopper assembly, chute deflector and once
a season using a light oil.

CLEANING

• 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.

Always stop the engine and

Temperature of muffler and

o

o

F(65

C).

9

• 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.

NOTE: Cleaning with a forceful spray of water is

not recommended as water could contaminate the
fuel system.

• 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.

• Service the engine oil according to the
separate engine owner’s guide supplied with
your chipper shredder.

AIR CLEANER

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.

• Service the air cleaner according to the
separate engine owner’s guide supplied with
your chipper shredder.

SPARK PLUG

• Service the spark plug according to the
separate engine owner’s guide supplied with
your chipper shredder.

REMOVING THE FLAIL SCREEN
(See Figure 7)

If the discharge area becomes clogged, remove the
flail screen and clean area as follows:

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.

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.

4. Remove two hairpin clips from the clevis pins
which extend through the housing. Remove the
clevis pins.

5. Pull the flail screen from inside the housing.

6. Clean the screen by scraping or washing with
water.

7. Reinstall the screen.

8. Put the discharge chute back to its original
position and tighten the hand knobs.

NOTE: Be certain to reassemble the flail screen

with the curved side down

CARBURETOR

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.

• Service the carburetor according to the
separate engine owner’s guide supplied with
your chipper shredder.

ENGINE SPEED

• 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 chipper­shredder to the nearest service center for
repair and adjustment.

Hairpin

Clip

Clevis

Hex Nuts

Washers

Chipper Chute

Figure 7

Pin

Discharge
Chute

Flail

Screen

Hand Knobs

SHARPENING OR REPLACING THE
CHIPPER BLADES (See Figure 8)

All models

1. Disconnect spark plug wire and move it away
from spark plug.

2. Remove the flail screen as instructed in
previous section.

10

3. Using a 1/2” wrench, remove the chipper chute
by removing three hex nuts and washers.

Model 465A only

4. Use a 7/16” wrench, to remove the brace
holding the chipper chute to the frame by
removing the hex bolts.

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 1/2" wrench on the impeller assembly
(inside the housing).

Slot

Blade

Allen Screws

Weld Bolt

Pipe

Torque Wrench

Figure 9

3. Remove the six hex lock nuts and lock washers
from the housing weld bolts using a 1/2"
wrench. Separate the chipper-shredder into two
halves.

4. Remove the support plate.

Blade

NOTE: When reassembling, make certain the

embossed tab faces inward towards the impeller,
and opening on the support plate is toward the
bottom of the unit.

Figure 8

6. Remove the other blade in the same manner.

7. Replace or sharpen blades.

8. If sharpening, make certain to remove an equal
amount from each blade.

9. Reassemble in reverse order. Make certain
blades are reassembled with the sharp edge
facing the direction shown in Figure 8 (sharp
edge is assembled toward the slotted opening
at the bottom).

10. Torque bolts and nuts to 250-350 inch-pounds.

SHARPENING OR REPLACING THE
SHREDDER BLADE

The shredder blade may be removed for sharpening
or replacement as follows. See Figure 9

1. Disconnect spark plug wire and move it away
from spark plug.

2. Lower the hopper assembly. Block up the
housing.

5. Remove the two hand knobs and cupped
washers which secure the discharge chute.
Raise the discharge chute.

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.

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 10

11

11. When reassembling the blade, tighten center
bolt to between 550 and 650 inch-pounds and
the two outer bolts to between 250 and 350
inch-pounds, or lacking torque wrench, tighten
securely.

1. Insert screw driver through hole

SECTION 10: 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.

1. Clean and lubricate the shredder thoroughly.

2. Refer to engine manual for correct engine
storage instructions.

2. Blade should be parallel to ground
Screw

Driver

Blade

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.

Ground

Figure 10

SECTION 11: TROUBLE SHOOTING GUIDE

Trouble Possible Cause(s) Corrective Action

Engine fails to start Dirty air cleaner.

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

equipped).

Faulty spark plug.
Loss of power; operation
erratic

Engine overheats Carburetor not adjusted properly.

Too much vibration Loose parts or damaged

Unit does not discharge Discharge chute clogged.

Rate of discharge slows
considerably or composition
of discharged material
changes

Spark plug wire loose.

Unit running on CHOKE.

Blocked fuel line or stale fuel.

Water or dirt in fuel system.

Carburetor out of adjustment.

Dirty air cleaner.

Dirty air cleaner.

Engine oil level low.

impeller.

Low engine RPM.

Foreign object lodged in

impeller.

Low engine RPM.

Shredding blade and/or chipper

blades dull.

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.
Open fuel shut-off valve.

Clean, adjust gap or replace.
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.
Disconnect fuel line at carburetor to drain fuel tank.
Refill with fresh fuel.
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.
Stop engine immediately and disconnect spark plug
wire. Have unit serviced by an authorized service
dealer.
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.
Always run engine at full throttle
Replace shredding and chipper blades or see your
authorized service dealer.

Note: For repairs beyond the minor adjustments above, contact your local authorized service dealer.

12

SECTION 12: ILLUSTRATED PARTS LIST

TOW HITCH KIT

Model Number 290-010-000

For Models 462B, 463C, 465A

REF.

NO.

1 681-0133 N Tow Bar Tongue
2 681-0134 N Tow Bar Base
3 710-3001 Hex Hd. Cap Scr. 3/8-16:.880 Lg.
4 711-0299 Pin, Clevis - .625 x 2.40 Lg.
5 711-0835 Pin, Clevis - .500 Dia. x 4.62 Lg.
6 712-0798 Hex Nut 3/8-16
7 732-0194 Spring Pin
8 736-0133 Fl. Wash. .411 x 1.25 x 1.00
9 736-0169 Lock Wash. 3/8 Reg.

PART

NO DESCRIPTION

13

Model 462B, 463C, 465A

14

Model 462B, 463C, 465A

REF.

NO.

1 742-0571 Blade
2 710-1254 Hx Patch Bolt 3/8-24 x 2.25" (Gr. 8)
4 736-0217 L-Wash. 3/8" I.D. H.D.
5 736-0247 Fl-Wash. .406" I.D. x 1.25" O.D. Hdn.
6 719-0329 Flail Blade

8 711-0833B Clevis Pin .496" Dia.
10 715-0166 Spring Roll Pin 1.00" Lg.
12 681-0030 Impeller Ass’y. Comp. (Incl. Ref. 1, 6, 8,

13 781-0490 Chipper Blade
14 710-1054 Flat Hd. Scr. 5/16-24 x .75" Lg.
15 712-0411 Hex Top L-Nut 5/16-24 (Gr. 5)
16 736-0119 L-Wash. 5/16" I.D.
17 710-0825 Hex Bolt 1/4-20 x 3.75" Lg.
19 750-0793 Chute Hinge Spacer 1.66" Lg.
20 711-0835 Clevis Pin .5" Dia. x 4.62" Lg.
22 712-3027 Hex Flg. L-Nut 1/4-20 Thd.
24 781-0457 Shredder Screen
25 714-0149B Internal Cotter Pin 3/8" Dia.
26 681-0094 N Chute Deflector Ass’y.
27 712-3010 Hex Nut 5/16-18 Thd. (Gr. 5)
29 681-0048 Hand Knob Ass’y.
33 681-0095 Chipper Chute Ass’y.†
34 736-0170 Spec. L-Wash. 5/16" I.D.
35 712-3004A Hex Nut 5/16-18 Thd. (Gr. 5)
36 781-0510B N Shredder Frame
37 710-0157 Hex Bolt 5/16-24 x .75" Lg.
38 736-0119 L-Wash. 5/16" I.D.
39 710-3008 Hex Bolt 5/16-18 x .75" Lg. (Gr. 5)
40 710-0442 Hex Bolt 5/16-18 x 1.50" Lg.
41 681-0004A N Flail Housing Ass’y.—L.H.
42 681-0117 N Flail Housing Ass’y.—R.H.
43 735-0639 Spark Plug Boot (Optional)
44 — Engine
45 681-0104 N Bracket Ass’y. - R.R.
46 681-0123 N Bracket Ass’y. - Frt.
47 710-0118 Hex Bolt 5/16-18 x .75" Lg. (Gr. 2)
48 710-0376 Hex Bolt 5/16-18 x 1.0" Lg. (Gr. 5)
49 711-1128 N Lock Rod
50 712-0429 Hex L-Nut 5/16-18
51 714-0104 Internal Cotter Pin .072 x 1.12 Lg.

PART

NO. DESCRIPTION

10, 12, 13, 14)

REF.

NO.

52 731-1707 N Hopper
53 731-1710 N Collar—Hopper
54 732-0306 Compression Spring
55 736-0117 Flat Wash. 3/8 x .620 x .033
56 736-0264 Flat Wash. .330 x .630 x .06
57 736-0362 Flat Wash. .320 I.D. x 1.25 O.D.
58 750-0785 Spacer .382 I.D. x .50 O.D. x 1.12
59 726-0214 Push Cap 5/8" Dia. Rod
60 737-0195 Drain Elbow†
61 750-0786 Spacer .64 I.D. x .38" Lg.
62 738-0814 Shredder Axle††

63 734-1600 Wheel Ass’y. Comp.††
64 734-1455A Rim Only†††

65 741-0487A Flange Bearing .632" I.D.†††
66 734-0255 Air Valve†††
67 737-0211 Grease Fitting xx
68 681-0068 Chute Ass’y. xx
69 710-0106 Hex Bolt 1/4-20 x 1.25 xx
70 710-0258 Hex Bolt 1/4-20 x 0625 xx
71 712-3027 Lock Nut 1/4-20 xx
72 728-0175 Pop Rivet xx
73 731-1899 N Chipper Chute xx
74 735-0249 Chute Flap xx
75 736-0173 Flat Wash. .28 I.D. xx
76 749-1004 N Chute Support xx
77 781-0633 Flat Strip xx
78 781-0515 Front Support Bracket
79 781-0574 Back Up Plate
— 764-0199A Bag (Not Shown)

80 726-0211 U-Nut
81 781-0735 Spring Clip
82 710-0599 Scr. TT. 1/4-20: .5”
83 710-1502 Scr. AB 8-18:.375
84 712-3004A Nut-Lock Hx. Flg. 5/16-18
85 7360329 Lockwasher
86 751-0447 Deflector
87 751-0632 Guard - Muffler
88 751-0646 Bracket - Muffler Guard

PART

NO. DESCRIPTION

738-0813 Shredder Axle†††
734-1597 Wheel Ass’y. Comp.†††

723-0400 Safety Glasses (Not Shown)

† Model 462B only
†† Modle 462B/463C
††† Model 465A
xx Model 463C/465A

15

MANUFACTURER’S LIMITED WARRANTY FOR:

For TWO YEARS from the date of retail purchase
within the United States of America, its possessions
and territories, MTD PRODUCTS INC will, at its
option, repair or replace, for the original purchaser,
free of charge, any part or parts found to be
defective in material or workmanship. This warranty
covers units which have been operated and
maintained in accordance with the operating
instructions furnished with the unit, and which have
not been subject to misuse, abuse, commercial use,
neglect, accident, improper maintenance or
alteration.

Normal wear parts or components thereof are
subject to separate terms as noted below in the “No
Fault Ninety Day Consumer Warranty” clause.

All normal wear part failures will be covered on this
product for a period of 90 days regardless of cause.
After 90 days, but within the two year period, normal
wear parts failures will be covered ONLY IF caused
by defects in material or workmanship of OTHER
component parts. Normal wear parts are defined as
batteries*, belts, blades, blade adapters, grass
bags, rider deck wheels, seats, snow thrower skid
shoes, shave plates and tires.

How to obtain service: Warranty service is
available, with proof of purchase, through your local
authorized service dealer. To locate the dealer in
your area, please check the yellow pages or contact
the Customer Service Department of MTD
PRODUCTS INC, P. O. Box 368022, Cleveland,
Ohio 44136-9722. Phone [phone]. The
return of a complete unit will not be accepted by the
factory unless prior written permission has been
extended by the Customer Service Department of
MTD PRODUCTS INC.

Transportation charges: Transportation charges
for the movement of any power equipment unit or
attachment are the responsibility of the purchaser.

Units exported out of the United States: MTD
PRODUCTS INC does not extend any warranty for

products sold or exported outside of the United
States of America, its possessions and territories,
except those sold through MTD PRODUCTS INC’s
authorized channels of export distribution.

Other Warranties:

1. The engine or component parts thereof carry
separate warranties from their manufacturers.
Please refer to the applicable manufacturer’s
warranty on these items.

2. *Batteries are covered by a 90-day replacement
warranty.

3. Log splitter pumps, valves and cylinders or
component parts thereof are covered by a one
year warranty.

4. All other warranties, express or implied,
including any implied warranty of
merchantability or fitness for a particular
purpose, are hereby expressly disclaimed in
their entirety.

5. The provisions as set forth in this warranty
provide the sole and exclusive remedy of MTD
PRODUCTS INC’s obligations arising from the
sales of its products. MTD PRODUCTS INC will
not be liable for incidental or consequential loss
or damage.

How state law relates to this warranty: This
limited warranty gives you specific legal rights, and
you may also have other rights which vary from
state to state. Certain disclaimers are not allowed in
some states and therefore they may not apply to
you under all circumstances.

NOTE: This warranty does not cover routine
maintenance items such as lubricants, filters, blade
sharpening and tune-ups, or adjustments such as
brake adjustments, clutch adjustments or deck
adjustments. Nor does this warranty cover normal
deterioration of the exterior finish due to use or
exposure.