OPERATOR’S MANUAL
Chipper Shredder
Vacuum
Model Number
24A-020D401
IMPORTANT: READ SAFETY RULES AND INSTRUCTIONS CAREFULLY
Warning: This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forest-
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
770-10197C.
FORM NO.
PRINTED IN U.S.A.
(8/01)
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 this machine. Failure to comply with these instructions may
result in personal injury. When you see this symbol - heed its warning.
WARNING: Engine Exhaust, some of its constituents, and certain vehicle
components contain or emit chemicals known to State of California to cause cancer
and birth defects or other reproductive harm.
DANGER: This machine 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 machine is capable of amputating hands and feet and throwing objects.
Failure to observe the following safety instructions could result in serious injury or death.
2. Always wear safety glasses or safety goggles
TRAINING
during operation or while performing an adjustment
1. Read, understand, and follow all instructions on the
or repair, to protect eyes. Thrown objects which
machine and in the manual(s) before attempting to
ricochet can cause serious injury to the eyes.
assemble and operate. Keep this manual in a safe
3. Wear sturdy, rough-soled work shoes and close-
place for future and regular reference and for
ordering replacement parts.
2. Be familiar with all controls and their proper
fitting slacks and shirts. Loose fitting clothes or
jewelry can be caught in movable parts. Never
operate this machine in bare feet or sandals. Wear
operation. Know how to stop the machine and
leather work gloves when feeding material in the
disengage them quickly.
chipper chute.
3. Never allow children under 16 years old to operate
4. Before starting, check all bolts and screws for
this machine. Children 16 years old and over
should read and understand the operation
instructions and safety rules in this manual and
should be trained and supervised by a parent.
proper tightness to be sure the machine is in safe
working condition. Also, visually inspect machine
for any damage at frequent intervals.
5. Maintain or replace safety and instructions labels,
4. Never allow adults to operate this machine without
as necessary.
proper instruction.
5. Keep bystanders, helpers, pets, and children at
least 75 feet from the machine while it is in
operation. Stop machine if anyone enters the area.
6. Never run an engine indoors or in a poorly
ventilated area. Engine exhaust contains carbon
monoxide, an odorless and deadly gas.
7. Do not put hands and feet near rotating parts or in
6. To avoid personal injury or property damage use
extreme care in handling gasoline. Gasoline is
extremely flammable and the vapors are explosive.
Serious personal injury can occur when gasoline is
spilled on yourself or your clothes which can ignite.
Wash your skin and change clothes immediately.
a. Use only an approved gasoline container.
b. Extinguish all cigarettes, cigars, pipes, and
the feeding chambers and discharge opening.
other sources of ignition.
Contact with the rotating impeller can amputate
fingers, hands, and feet.
c. Never fuel machine indoors.
d. Never remove gas cap or add fuel while the
8. Never attempt to unclog either the feed intake or
engine is hot or running.
discharge opening, remove or empty vacuum bag,
e. Allow engine to cool at least two minutes
or inspect and repair the machine while the engine
before refueling.
is running. Shut the engine off and wait until all
f. Never over fill fuel tank. Fill tank to no more
moving parts have come to a complete stop.
than 1/2 inch below bottom of filler neck to
Disconnect the spark plug wire and ground it
provide space for fuel expansion.
against the engine.
g. Replace gasoline cap and tighten securely.
h. If gasoline is spilled, wipe it off the engine
PREPARATION
and equipment. Move machine to another
area. Wait 5 minutes before starting the
engine.
1. Thoroughly inspect the area where the equipment
is to be used. Remove all rocks, bottles, cans, or
other foreign objects which could be picked up or
thrown and cause personal injury or damage to the
machine.
3
i. Never store the machine or fuel container
inside where there is an open flame, spark,
or pilot light (e.g. furnace, water heater,
space heater, clothes dryer, etc.)
j. To reduce a fire hazard, keep machine free
of grass, leaves, or other debris build-up.
Clean up oil or fuel spillage and remove any
fuel soaked debris.
9. Never operate without either the inlet nozzle or
optional hose attachment properly attached to the
machine. Never attempt to attach or change either
attachment while the engine is running.
10. Keep all guards, deflectors and safety devices in
place and operating properly.
11. Keep your face and body back and to the side of
the chipper chute while feeding material into the
machine to avoid accidental kickback injuries.
12. Never operate this machine without good visibility
or light. Always be sure of your footing and keep a
firm hold on the handles.
13. Do not operate this machine on a gravel surface.
14. Do not operate this machine while under the
influence of alcohol or drugs.
15. Muffler and engine become hot and can cause a
burn. Do not touch.
k. Allow machine to cool at least 5 minutes
before storing.
OPERATION
1. Do not put hands and feet near rotating parts or in
the feeding chambers and discharge opening.
Contact with the rotating impeller can amputate
fingers, hands, and feet.
2. Before starting the machine, make sure the chipper
chute, feed intake, and cutting chamber are empty
and free of all debris.
16. Never pick up or carry machine while the engine is
running.
3. Thoroughly inspect all material to be shredded and
remove any metal, rocks, bottles, cans, or other
foreign objects which could cause personal injury
or damage to the machine.
MAINTENANCE AND STORAGE
1. Never tamper with safety devices. Check their
proper operation regularly.
4. If the impeller strikes a foreign object or if your
machine should start making an unusual noise or
vibration, immediately shut the engine off. Allow the
impeller to come to a complete stop. Disconnect
the spark plug wire, ground it against the engine
and perform the following steps:
2. Check bolts and screws for proper tightness at
frequent intervals to keep the machine in safe
working condition. Also, visually inspect machine
for any damage and repair, if needed.
3. Before cleaning, repairing, or inspecting, stop the
engine and make certain the impeller and all
moving parts have stopped. Disconnect the spark
plug wire and ground it against the engine to
prevent unintended starting.
4. Do not change the engine governor settings or
overspeed the engine. The governor controls the
maximum safe operating speed of the engine.
5. Maintain or replace safety and instruction labels, as
necessary.
a. Inspect for damage.
b. Repair or replace any damaged parts.
c. Check for any loose parts and tighten to
assure continued safe operation.
5. Do not allow an accumulation of processed
material to build up in the discharge area. This can
prevent proper discharge and result in kickback of
material through the feed opening.
6. Do not attempt to shred or chip material larger than
specified on the machine or in this manual.
Personal injury or machine damage could result.
7. Never attempt to unclog either the feed intake or
discharge opening while the engine is running.
Shut the engine off, wait until all moving parts have
stopped, disconnect the spark plug wire and
ground it against the engine before clearing debris.
8. Never operate without vacuum bag and discharge
chute properly attached to the machine. Never
empty or change vacuum bag while the engine is
running. Zippered end of vacuum bag must be kept
closed at all times during operation.
6. Follow this manual for safe loading, unloading,
transporting, and storage of this machine.
7. Never store the machine or fuel container inside
where there is an open flame, spark or pilot light
such as a water heater, furnace, clothes dryer, etc.
8. Always refer to the operator’s manual for proper
instructions on off-season storage.
9. If the fuel tank has to be drained, do this outdoors.
10. Observe proper disposal laws and regulations for
gas, oil, etc. to protect the environment.
4
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.
NOTE: Not all safety labels shown may apply to your chipper shredder vacuum.
SECTION 2: ASSEMBLING YOUR CHIPPER SHREDDER VACUUM
IMPORTANT: This unit is shipped without gasoline or oil
in the engine. Be certain to service engine with gasoline
and oil as instructed in the separate engine manual
before operating your machine.
Upper
Handle
NOTE: Reference to right or left hand side of the
chipper shredder vacuum is observed from the
operating position.
Blower Chute
Removing Unit From Carton
•
Remove staples, break glue on top flaps, or cut
tape at carton end and peel along top flap to open
carton.
Wing
Nuts
•
•
•
Remove loose parts if included with unit (i.e.,
operator’s manual, etc.)
Cut along corners, lay carton down flat, and remove
packing material.
Roll or slide unit out of carton and check carton
thoroughly for loose parts.
Bag
Lower
Handle
Loose Parts In Carton (See Figure 1)
•
•
•
Handle Assembly
Bag
Blower Chute (If Equipped)
Wing
Nuts
Disconnecting Spark Plug Wire
Before setting up your chipper shredder vacuum,
disconnect the spark plug wire from the spark plug and
ground to a stud on the engine.
Carriage
Screw
Figure 1
5
Attaching The Handle
•
Unfold the upper handle until it aligns with the lower
handle.
Bag Handle
•
Secure the two handles by tightening the wing nuts
(carriage bolts must be seated properly into the
handle). See Figure 1.
Stud
•
Remove the hairpin clips from the handle brackets
on the chipper shredder vacuum and remove the
carriage bolts and wing nuts from the lower handle.
See Figure 2.
Straps
•
•
Place each bottom hole in lower handle over pins
on handle brackets and secure with hairpin clips.
Insert carriage bolts thru upper hole in lower handle
from the outside and secure with wing nuts.
Front Tab
Wing Nuts
Locking Rod
Carriage Bolt
Hairpin Clip
Stud
Figure 3
Attaching The Blower Chute (If Equipped)
•
•
•
Grasp blower chute with one hand and slide locking
rod on mounting bracket with other hand toward
engine. Use the end of mounting bracket as
leverage when sliding the locking rod. See Figure 4.
Slip blower chute over rim of the discharge opening
and release locking rod to secure chute in place.
Make sure the safety switch button is fully
depressed by the front tab on the blower chute.
Raise the nozzle height to the highest setting when
using the blower chute. Refer to nozzle height
adjustment in the OPERATION section.
Figure 2
Attaching The Bag
•
Grasp bag handle with one hand and slide locking
rod on mounting bracket with other hand toward
engine. Use the end of mounting bracket as
leverage when sliding the locking rod.
See Figure 3.
•
•
•
Slip bag over the rim of the discharge opening and
release locking rod to secure bag in place.
Place the straps on the bag over the lower handle,
hooking them on the studs.
Blower
Chute
Snap bag clip to the top of the lower handle.
NOTE: The safety switch button attached to the
mounting bracket must be fully depressed by the front
tab on the bag handle when securing the bag or the
engine will not start.
Front
Tab
Front
Locking
Tab
Rod
Locking
Rod
Figure 4
6
SECTION 3: KNOW YOUR CHIPPER SHREDDER VACUUM
Blower Chute
Bag
Bag Handle
Nozzle Height
Adjustment Lever
Chipper
Chute
Nozzle
Figure 5
Read this operator’s manual and safety rules before
Nozzle
operating your chipper shredder vacuum. Compare the
illustrations in Figure 5 with your unit to familiarize
yourself with the location of various controls and
adjustments. Save this manual for future reference.
Yard waste such as leaves and pine needles can be
vacuumed up through the nozzle for shredding.
Starter Handle (Not Shown)
The starter handle is attached to the right upper handle.
Stand behind unit and pull the starter handle to start
engine. See Figure 5.
Bag
Collects shredded material fed through the chipper
chute or vacuumed through the nozzle. See Figure 5.
Throttle Control Lever (Not Shown)
Bag Handle
The throttle control lever is located on the engine. It
controls the engine’s speed and stops the engine. See
separate engine manual packed with unit for details.
Used to grasp bag in order to assist in attaching,
removing, and emptying bag. See Figure 5.
Chipper Chute
Engine Controls
Allow twigs and small branches up to 1 1/2” in diameter
to be fed into the impeller for chipping. See Figure 5.
See the separate engine manual for the location and
function of the controls on the engine.
Blower Chute (If Equipped)
When attached to unit the blower chute is used to blow
or scatter yard waste such as leaves, pine needles, or
small twigs across yard. See Figure 5.
Stopping Engine
•
Move throttle control lever to STOP or OFF
position.
•
Disconnect spark plug wire from spark plug and
ground against the engine.
Nozzle Height Adjustment Lever
Used to adjust the nozzle ground clearance ranging
approximately 5/8” to 4 1/8”.
7
SECTION 4: OPERATING YOUR CHIPPER SHREDDER VACUUM
WARNING: The operation of any chipper
shredder vacuum can result in foreign
objects being thrown into the eyes, which
can damage your eyes severely. Always
wear the safety glasses provided with this
unit or eye shields before chipping or
blowing and while performing any
adjustments or repairs.
•
Grasp bag handle with one hand and pull lock rod
on mounting bracket with other hand toward engine
to release.
Remove bag from rim of the discharge opening.
Refer to Figure 3.
Twist the two buttons on the back of the bag to
unlock and empty contents. See Figure 6.
Hold bag handle and bag clip while emptying the
contents.
Compress bag opening and fold inner flap over
opening.
•
•
•
•
•
•
Gas And Oil Fill-Up
Service the engine with gasoline and oil as instructed in
the separate engine manual packed with your chipper
shredder vacuum. Read instructions carefully.
Fold outer flap over inner flap and insert buttons on
the bag through metal outlets.
Twist the buttons to lock bag.
WARNING: Never fill fuel tank indoors with
engine running or until the engine has
been allowed to cool for at least two
minutes after running.
Buttons
Starting Engine
Bag Clip
Inner Flap
•
Attach spark plug wire to spark plug. Make certain
the metal cap on the end of the spark plug is
fastened securely over the metal tip on the spark
plug.
Bag Handle
•
•
Make sure safety switch wire is connected to
engine and properly grounded.
Engines with choke lever:
Outer Flap
Move choke lever on engine to CHOKE position. (A
warm engine may not require choking).
Engines with primer:
Strap
Prime engine as instructed in separate engine
manual.
•
•
The throttle control is located on the engine. Move
engine throttle control lever to FAST or ON position.
Stand behind unit, grasp starter handle and pull
rope out slowly until engine reaches start of
compression cycle (rope will pull slightly harder at
this point).
Pull rope with a rapid, continuous, full arm stroke.
Keep a firm grip on starter handle. Let rope rewind
slowly.
Figure 6
To Remove Blower Chute (If Equipped)
•
Grasp blower chute with one hand and pull lock rod
on mounting bracket with other hand toward engine
to release. Refer to Figure 4.
•
•
•
Remove blower chute from rim of the discharge
opening.
Repeat previous steps until engine fires. When
engine starts, move choke control (if equipped)
gradually to RUN position.
Using the Chipper Shredder Vacuum
WARNING: Never run the engine indoors
or in a poorly ventilated area. Engine
exhaust contains carbon monoxide, an
odorless and deadly gas.
Place both hands on top of upper handle to push unit
over yard waste. Yard waste such as leaves and pine
needles can be vacuumed up through the nozzle for
shredding. After material has been shredded by the flail
blades on the impeller assembly, it will be discharged
into catcher bag or through blower chute. Do not
attempt to shred or chip any material other than
vegetation found in a normal yard (i.e. branches,
leaves, twigs, etc.) Avoid fibrous plants such as tomato
To Empty Bag
•
Unhook bag straps from the lower handle and
unsnap bag clip from the top of lower handle.
See Figure 6.
8
vines until they are thoroughly dried out. Materials such
as stalks or heavy branches up to 1 1/2” in diameter
may be fed into the chipper chute. See Figure 7.
WARNING: Do not at any time make any
adjustments without first stopping engine
and disconnecting spark plug wire.
Nozzle Height Adjustment
The nozzle can be adjusted to any five positions,
ranging from 5/8” to 4 1/8” ground clearance. The
nozzle height has to be adjusted according to the
conditions. Move the height adjustment levers forward
or backward to adjust the nozzle upwards or
downwards. See Figure 8.
NOTE: In general, raise the nozzle height to vacuum a
thick layer of leaves or to operate with the blower chute
and lower the nozzle height for smoother surfaces.
Nozzle
Chipper
Chute
Figure 7
IMPORTANT: The flail screen is located inside the
housing in the discharge area. If the flail screen
becomes clogged, remove and clean as instructed in
SECTION 5: MAINTAINING YOUR CHIPPER
SHREDDER VACUUM. For best performance, it is also
important to keep the chipper blade sharp.
Nozzle Height
Adjustment
Nozzle
Lever
Figure 8
SECTION 5: MAINTAINING YOUR CHIPPER SHREDDER VACUUM
Customer Responsibilities
MAINTENANCE
SCHEDULE
SERVICE
DATES
Lubricate Wheels
Lubricate Nozzle Levers
Lubricate Locking Rod
Check Chipper Blade
Change Oil
Check Air Filter
Clean Engine
Check Spark Plug
9
WARNING: Always stop engine and
disconnect spark plug wire before
cleaning, lubricating or doing any kind of
maintenance on your machine.
•
Remove the bag or blower chute from the unit as
instructed in the OPERATION section to obtain
access to flail screen. See Figure 9.
Remove hex screw on right side of unit that
attaches to the fail screen. See Figure 10.
Remove hex screw and flat washer on top of rear
housing mounting bracket and the lock nut that
secures flail screen. See Figure 9.
•
•
Lubrication
Wheels: Lubricate each wheel shoulder screw once a
season with light oil. Refer to Figure 5.
•
Remove and clean the screen by scraping or
washing with water. Reinstall the flail screen.
Nozzle height adjustment levers: Lubricate the pivot
points of the nozzle height adjustment levers once a
season with light oil. Refer to Figure 5.
Engine: Follow the separate engine manual packed
with your unit for lubrication instructions.
Maintenance
Engine
Refer to the separate engine manual for all engine
maintenance instructions.
•
•
Check engine oil level before each use as
instructed in the separate engine manual packed
with your unit. Read and follow instructions
carefully.
Clean air cleaner every 25 hours under normal
conditions or once a season. Clean every few hours
under extremely dusty conditions. To service the air
cleaner, refer to the separate engine manual
packed with your unit.
Remove
Hex Screw
Figure 10
Sharpening Or Replacing Chipper Blade
Because the engine on this unit has a tapered
•
The spark plug should be cleaned and the gap
reset once a season. Check engine manual for
correct plug type and gap specifications.
crankshaft, a special impeller tool (part number 753-
0900) is required to remove the impeller assembly. For
further assistance, contact your local service dealer.
NOTE: When tipping the unit, empty the fuel tank and
keep spark plug side up.
Removing The Flail Screen
If the discharge area becomes clogged, remove the flail
screen and clean area as follows:
•
•
Disconnect the spark plug wire and ground it away
from the spark plug.
Remove the lock nuts, front wheels, and wave
washers that attach to the pivot arm assemblies.
See Figure 11.
•
Stop the engine and make certain the chipper
shredder vacuum has come to a complete stop.
Disconnect spark plug wire from spark plug and
ground against the engine.
•
Hex Screw & Flat Washer
Pivot Arm Assembly
Bell Washer
Wave Washer
Height Adjustment
Bracket
Lock Nut
Flail Screen
Figure 9
Shoulder
Screw
Lock Nut
Figure 11
10
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