Craftsman 247.776370 User Manual [en, es]
Operator’s Manual
1100 Series Engine
Chipper Shredder
Model No. 247.776370
CAUTION: Before using
this product, read this
manual and follow all
safety rules and operating
instructions.
Sears, Roebuck and Co., Hoffman Estates, !L 60179, U.S.A.
Visit our web site: www.craftsman.com
• MAINTENANCE
• PARTS LIST
• ESPAÑOL
FORM NO. 769-03235
08/14/2007
TABLE OF CONTENTS
Warranty Statement
Repair Protection Agreement
Safe Operation Practices
Safety Labels............................................Page 7
Assembly
Operation..................................................Pages 12-13
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Page 2
Page 3
Pages 4-5
Pages 8-11
Service and Maintenance
Off-Season Sforage..................................Page 18
Trouble Shooting
Parts List...................................................Page 20-29
Español.....................................................Page 32
Service Numbers
......................................
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Pages 14-17
Page 19
Back Cover
WARRANTY
One Year Full Warranty on Craftsman Chipper Shredder
This equipment is covered by a one-year warranty, provided that it is maintained, lubricated, and tuned up according to the instructions in the
operator’s manuai. During the warranty year, if this equipment experiences any faiiure due to defects in material or workmanship, RETURN IT TO
YOUR NEAREST SEARS PARTS & REPAIR CENTER, and Sears will repair it, free of charge, in-home warranty service is available, but you will
have to pay a trip charge.
This warranty does not cover:
• Expendable items which become worn during normal use, such as spark plugs, air cleaners, blades.
• Tire replacement or repair caused by punctures from outside objects, such as nails, thorns, stumps, or glass.
• Repairs necessary because of operator abuse, including but not limited to, damage caused by objects, such as stones, metal debris or
oversized pieces of wood, or impacting objects that bend the frame or crankshaft, or over-speeding the engine.
• Repairs necessary because of operator negligence, including but not limited to, electrical and mechanical damage caused by improper
storage, failure to use the proper grade and amount of engine oil, or failure to maintain the equipment according to the instructions contained
in the operator’s manual.
• Engine (fuel system) cleaning or repairs caused by fuel determined to be contaminated or oxidized (stale). In general, fuel should be used
within 30 days of its purchase date.
• Equipment it used for commercial or rental purposes.
This warranty applies for only 90 days if this product is ever used for commercial or rental purposes.
This warranty applies only while this product is used in the United States.
This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
Sears, Roebuck and Co., Hoffman Estates, IL 60179
PRODUCT SPECIFICATIONS
Engine Series: 1100
Engine Oil Type: SAE 30
Engine Oil Capacity: 20 ounces
Fuel: Unleaded Gasoline
Spark Plug: Champion® RC-12YC
Spark Plug Gap: .030”
Model Number.......
Serial Number
Date of Purchase.
.......
Record the model number, serial number
and date of purchase above
©Sears Brands, LLC
Congratulations on making a smart purchase. Your new Craftsman®
product is designed and manufactured for years of dependabie opera
tion. But like aii products, it may require repair from time to time. That’s
when having a Repair Protection Agreement can save you money and
aggravation.
Here's what’s inciuded in the Agreement:
« Expert service by our 12,000 professional repair specialists
« Unlimited service and no charge for parts and iabor on all covered
repairs
« Product replacement if your covered product can’t be fixed
« Discount of 10% from regular price of service and service-related
parts not covered by the agreement; also, 10% off regular price of
preventive maintenance check
« Fast help by phone - phone support from a Sears technician on
products requiring in-home repair, plus convenient repair
Purchase a Repair Protection Agreement now and protect yourself
from unexpected hassle and expense.
Once you purchase the Agreement, a simple phone call is all that it
takes for you to schedule service. You can call anytime day or night, or
schedule a service appointment online.
Sears has over 12,000 professional repair specialists, who have
access to over 4.5 million quality parts and accessories. That’s the
kind of professionalism you can count on to help prolong the life of
your new purchase for years to come. Purchase your Repair Protection
Agreement today!
Some limitations and exclusions appiy. For prices and additional
information call 1-800-827-6655.
Sears Installation Service
For Sears professional installation of home appliances, garage door
openers, water heaters, and other major home items, in the U.S.A. call
1-800-4-MY-HOME®
scheduling
SAFETY INSTRUCTIONS
Awarning
This symbol points out important safety instructions
which, if not followed, could endanger the personal
safety and/or property of yourself and others. Read
A
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!
Your Responsibility:
Restrict the use of this power machine to
persons who read, understand, and follow the warnings and instruc
tions in this manual and on the machine.
TRAINING
• Read, understand, and follow all instructions on the machine and in
the manual(s) before attempting to assemble and operate. Keep this
manual in a safe place for tutu re and regular reference and for ordering
replacement parts.
• Be familiar with all controls and their proper operation. Know how to stop
the machine and disengage them quickly.
• Never allow children under 16 years old to operate this machine. Chil
dren 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.
• Never allow adults to operate this machine without proper instruction.
• Keep bystanders, helpers, pets, and children at least 75 feet from the
machine while if is in operation. Stop machine if anyone enters the area.
• Never run an engine indoors or in a poorly ventilated area. Engine
exhaust contains carbon monoxide, an odorless and deadly gas.
• 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.
• Never attempt to unclog either the feed intake or discharge opening,
remove or empty chipper bag, or inspect and repair the machine while
the engine is running. Shut the engine off and wait until all moving parts
have come to a complete stop. Disconnect the spark plug wire and
ground it against the engine.
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.
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.
PREPARATION
• 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.
• Always wear safety glasses or safety goggles during operation or while
performing an adjustment or repair, to protect eyes. Thrown objects
which ricochet can cause serious injury to the eyes.
• Vf/ear sturdy, rough-soled work shoes and close-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 leather work gloves
when feeding material in the chipper chute.
• Before starting, check all bolts and screws for proper tightness to be
sure the machine is in safe working condition. Also, visually inspect
machine for any damage at frequent intervals.
• Maintain or replace safety and instructions labels, as necessary.
• 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.
• Use only an approved gasoline container.
• Extinguish all cigarettes, cigars, pipes, and other sources of ignifion.
• Never fuel machine indoors.
• Never remove gas cap or add fuel while the engine is hot or running.
• Allow engine to cool at least two minutes before refueling.
• Never over fill fuel tank. Fill tank to no more than 1/2 inch below bottom
of filler neck to provide space for fuel expansion.
• Replace gasoline cap and tighten securely.
• If gasoline is spilled, wipe it off the engine and equipment. Move
machine to another area. Wait 5 minutes before starting the engine.
• 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.).
• 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.
• Allow machine to cool at least 5 minutes before storing.
DANGER
AWARNING
SAFETY INSTRUCTIONS
OPERATION
• 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.
• Before starting the machine, make sure the chipper chute, feed intake,
and cutting chamber are empty and tree of all debris.
• 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.
• If it becomes necessary to push material through the shredder hopper,
use a small diameter stick. Do not use your hands or feet.
• 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:
1. Inspect for damage.
2. Repair or replace any damaged parts.
3. Check for any loose parts and tighten to assure continued safe
operation.
• 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.
• 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.
• 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.
• Never operate without chipper bag and discharge chute properly
attached to the machine. Never empty or change chipper bag while the
engine is running. Zippered end of chipper bag must be kept closed at all
times during operation.
• Never operate without the shredder hopper, chipper chute, or chute
deflector properly attached to the machine. Never empty or change
chipper bag while the engine is running.
• Keep all guards, deflectors and safety devices in place and operating
properly.
• 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.
• Never operate this machine without good visibility or light.
• Do not operate this machine on a paved, gravel, or non-level surface.
‘ Do not operate this machine while under the influence of alcohol or
drugs.
‘ Muffler and engine become hot and can cause a burn. Do not touch.
• Never pick up or carry machine while the engine is running.
MAINTENANCE & STORAGE
• Never tamper with safety devices. Check their proper operation
• Check bolts and screws for proper tightness at frequent intervals to keep
• Before cleaning, repairing, or inspecting, stop the engine and make
• Do not change the engine governor settings or overspeed the engine.
• Maintain or replace safety and instruction labels, as necessary.
• Follow this manual for safe loading, unloading, transporting, and storage
• Never store the machine or fuel container inside where there is an open
• Always refer to the operator's manual for proper instructions on
• If the fuel tank has to be drained, do this outdoors.
• Observe proper disposal laws and regulations for gas, oil, etc. to protect
Do not modify engine
To avoid serious injury or death, do not modify engine in any way.Tampering
with the governor setting can lead to a runaway engine and cause it to operate
at unsafe speeds. Never tamper with factory setting of engine governor.
regularly.
the machine in safe working condition. Also, visually inspect machine for
any damage and repair, if needed.
certain the impeller and all moving parts have stopped. Disconnect the
spark plug wire and ground it against the engine to prevent unintended
starting.
The governor controls the maximum safe operating speed of the engine.
of this machine.
flame, spark or pilot light such as a water heater, furnace, clothes dryer,
etc.
off-season storage.
the environment.
This page left intentionally blank.
TO AVOID SERIOUS INJURY:
Do not operate on uneven ground where unit is
unstable. Do not operate on pavement, gravel or
other hard surfaces since objects can ricochet
and cause injury.
To avoid a fire hazard, keep leaves, grass, and other
combustible materials away from hot engine and
muffier.
Keep children and others away from area of
operation.
Wear approved safety glasses, gloves and ear
protection.
INSTRUCTIONS:
TO RAISE AND LOWER HOPPER
ADANGER
TO AVOID SERIOUS INJURY:
• Read the owner's manual(s) before starting and
using unit.
« Keep all shields and guards in place and securely
attached.
• Keep hands, feet, face, clothing and long hair out of
Shredder Hopper, Chipper Chute and Discharge
Chute while the engine is running. Rotating cutting
blades inside these openings will cause serious
personal injury if contacted. IViaterial being
processed
may bounce back from inlet openings or be thrown
from the discharge chute. Long hair or loose clothing
may be pulled sucked into the inlet openings.
• Do not place branches over 1/2 inch diameter into
the large Shredder Hopper. Branches over t/2 inch in
diameter should be placed in the Small Chipper
Chute.
• II the chipped shredder jams or becomes clogged,
immediately shut off the engine and wait for all
moving parts to come to a complete stop before
clearing.
• Do not install remove, adjust, or service the
discharge screen or any other part while the engine
is running. Blade contact can occur.
A DANGE
ROTATING CUTTING BLADES.
KEEP HANDS AND FEET OUT
OF OPENINGS WHILE MACHINE
IS RUNNING.
A DANGER
DO NOT OPERATE THIS MACHINE
UNLESS THE CHUTE DEFLECTOR
HAS BEEN PROPERLY INSTALLED.
A WARNING
lllllllllllllllllllllllllllllllllllllllli
DO NOT DEPOSIT
MATERIAL LARGER THAN
1/2" DIAMETER IN LARGE
SHREDDER HOPPER.
THIS MAY DAMAGE
MACHINE.
D
• ROTATING CUTTING BLADES.KEEP HANDS
AND FEET OUT OF OPENING WHILE
MACHINE IS RUNNING.
•DO NOT OPERATE THIS MACHINE UNLESS
THE CHUTE DEFLECTOR HAS BEEN
PROPERLY INSTALLED AND IS SECURED
WITH THE HAND KNOBS.
ASSEMBLY
IMPORTANT:
Be certain to service engine with gasoline and oil as instructed in the
separate engine manual before operating your machine.
NOTE:
observed from the operating position.
Reterence to right and left hand side ot the Yard Vacuum is
This unit is shipped without gasoline or oil in the engine.
OPENING CARTON
1. Cut each corner of the carton vertically trom top to bottom.
2. Remove all loose parts.
3. Remove loose packing material.
REMOVING UNIT FROM CARTON
1. Lift unit trom the rear to detach it trom underlying carton material
and roll unit out of carton.
2. Check carton thoroughly tor any other loose parts.
LOOSE PARTS IN CARTON
Hopper Assembly
Bag
Chute Detlector
Chipper Chute
Safety Glasses
Engine Oil
ATTACHING THE HOPPER ASSEMBLY
1. a. Remove six hex nuts and washers from the weld studs on the
impeller housing. Do not remove support plate. See Figure 1.
b. Place hopper assembly into position in front of impeller
housing, aligning holes in hopper assembly collar with weld
studs.
c. Slide hopper assembly onto weld studs and replace washers
and hex nuts. Do not tighten completely.
2. a. Lift hopper assembly up to impeller bracket assembly.
b. Slide the release rod out slightly to hook the hopper bracket
onto the rod. See Figure 2.
c. Tighten the six hex nuts that secure hopper assembly to
impeller housing and also tighten the hex nuts that secure
hopper bracket to hopper assembly.
8
ASSEMBLY
ATTACHING THE CHUTE DEFLECTOR
1. a. Remove the wing knobs from each side of the lower impeller
housing. See Figure 3.
b. Remove the hex lock nut, spacers, and hex bolt from the top of
the impeller housing.
2. a. Align the chute deflector in position on the discharge opening
and insert hex bolt with spacer through hinge on chute
deflector (spacers fit inside of hinges). See Figure 4.
b. Place second spacer over hex bolt inside other hinge and
secure with hex lock nut.
c. Secure both sides of chute deflector to impeller housing using
wing knobs previously removed.
ATTACHING THE CHIPPER CHUTE
1. a. Remove the three cupped washers and hex nuts from weld
studs around the opening on the side of the impeller housing.
See Figure 5.
b. Remove the hex bolts, flat washers, and lock nuts from the two
holes on the upper end of the support brace.
9
ASSEMBLY
2. a. Align the chipper chute over the weid studs, so the siot in the
bottom of the chute is facing down. See Figure 6.
b. Secure chipper chute with the three cupped washers (cupped
side against the chipper chute) and hex nuts previousiy
removed. Do not tighten the nuts at this time.
3. The chipper shredder was shipped with one end of the support
brace already secured to the lower frame. Loosen but do not
remove the bolts securing the brace to the frame.
a. Align the holes in the chute with the holes in the top of the
brace and attach brace to chipper chute with hardware
previously removed. Tighten securely. See Figure 7.
b. Tighten the bolts securing the support brace to the frame.
c. Tighten the three nuts on the weld studs holding the chipper
chute to the impeller housing.
ATTACHING THE BAG
1. To attach the bag:
a. Place the opening of the bag completely over the chute
deflector.
b. Pull on the drawstring until the bag is tight around chute
deflector opening.
c. Clip drawstring back on itself, tight against chute deflector to
secure into position. See Figure 8.
10
OPERATION
Now that you have set up your chipper shredder for operation, get
aquainted with its controls and features. These are described below
and illustrated on this page. This knowledge will allow you to use your
new equipment to its fullest potential.
CHIPPER CHUTE
Allows twigs and small branches up to 3” in diameter to be fed into the
impeller for chipping. See Figure 9.
HOPPER ASSEMBLY
Allow leaves and small branches up to 1/2 diameter to be fed into the
impeller for chipping and shredding. Material can be raked into hopper
assembly by lowering the hopper assembly. See Figure 9.
RELEASE ROD
The release rod is located on the impeller bracket assembly and it
is used to release or lock the hopper when raising or lowering. See
Figure 9.
CHUTE DEFLECTOR
Chipped and shredded debris is discharged out the chute deflector.
The unit may be operated with or without the collection bag attached to
the chute deflector. See Figure 9.
The operation of any chipper shredder 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 shredding and while performing any adjustments
or repairs.______ _ _ _ _ _ _________ _ _ _ _ _ _ _________ _ _ _ _
THROTTLE CONTROL
This lever controls the engine speed and stop function. Through three
separate positions on the lever from left to right, the operation is as
follows:
*0
Start/ Run Slow/ Idle
CHOKE CONTROL
The choke control is used to choke the carburetor and assist in starting
the engine.
STARTER HANDLE
Used to start the engine.
A WARNING
Engine Off
Meets ANSI Safety Standards
Craftsman Yard Vacuums conform to the safety standard of the American National Standards Institute (ANSI).
11
OPERATION
GAS AND OIL FILL-UP
Oil (one bottle shipped with unit)
First Time Use
1. Remove oil fill dipstick.
2. With the chipper shredder on level ground, use a funnel to empty
entire contents of oil bottle provided into the engine.
3. Replace oil fill dipstick and tighten.
Subsequent Uses
Only use high quality detergent oil rated with API service classification
SF, SG, or SH. Select the oil’s SAE viscosity grade according to the
expected operating temperature. Follow the chart below.
/Colder
5W30
■32T -►Warmer
SAE30
Oil Viscosity Chart
Although multi-viscosity oils (5W30,10W30, etc.) improve starting
in cold weather, they will result in increased oil consumption when
used above 32°F. Check your engine oil level more frequently to avoid
possible engine damage from running low on oil.
1. Check the oil level making certain not to rub the dipstick along the
inside walls of the oil fill tube. This would result in a false dipstick
reading. Refill to FULL markon dipstick, if necessary. Capacity
is approximately 18 oz. Overfilling will cause the engine to smoke
profusely and will result in poor engine performance.
2. Replace oil fill dipstick and tighten.
3. Keep oil level at FULL. Running the engine with too little oil can
result in permanent engine damage.
Use Alcohol blended fuels (called gasohol or using ethanol or metha
nol) can attract moisture which leads to separation and formation of
acids during storage. Acidic gas can damage the fuel system of an
engine while in storage.
To avoid engine problems, the fuel system should be emptied before
storage for 30 days or longer. Drain the gas tank, start the engine
and let it run until the fuel lines and carburetor are empty. Use
fresh fuel next season. See STORAGE Instructions for additional
information.
Awarning
Use extreme care when handling gasoline. Gasoline is extremely
flammable and the vapors are explosive. Never fuel machine indoors
or while the engine is hot or running. Extinguish cigarettes, cigars,
pipes, and other sources of ignition.
Gasoline
1. Remove fuel cap from the fuel tank.
2. Make sure the container from which you will pour the gasoline is
clean and free from rust or foreign particles. Never use gasoline
that may be stale from long periods of storage in its container.
Gasoline that has been sitting for any period longer than four
weeks should be considered stale.
3. Fill fuel tank with clean, fresh, unleaded regular gasoline only. Do
not use gasoline containing METHANOL. Replace fuel cap.
Never use engine or carburetor cleaner products in the fuel tank or
permanent damage may occur.
NOTE:
line while operating the chipper shredder, if the unit runs out of gas as
it is chipping, it may be necessary to unclog the discharge area before
it can be restarted. Refer to SERVICE AND ADJUSTMENT section.
TO START ENGINE
1. Attach spark plug wire and rubber boot to spark plug.
2. Gas tank should be filled 3/4 to full before starting.
3. Move the choke lever on the engine to CHOKE position.
(A warm engine may not require choking.) See Figure 10.
4. Move throttle control to START/RUN (Rabbit) position,
See Figure 10.
5. Standing behind the unit, grasp starter handle and pull rope out
until you feel a drag.
Figure 10
A CAUTION
A CAUTION
A CAUTION
Check the fuel level periodically to avoid running out of gaso
N
12
OPERATION
NOTE:
cycle. This noise is caused by the flails and fingers, which are part of
the shredding mechanism, and it should be expected until the impeller
reaches full speed.
6. Pull the rope with a rapid, continuous, full arm stroke. Keep a firm
7. Repeat, if necessary, unfil engine starts. When engine starts,
8. If engine falters, move choke control back toward the throttle
9. ALWAYS keep the throttle control in the START/RUN
TO STOP ENGINE
1.
SHREDDING
Yard waste such as leaves and pine needles can be placed in the
hopper for shredding. After material has been processed by the shred
der blade and flails, if will be forced out of the chute deflector, and, if
attached, into a debris collection bag.
Observe the following guidelines when shredding yard debris:
• Never attempt to shred material other than normal yard debris
• Avoid shredding fibrous plants such as tomato vines until they are
• Place reasonable amounts of debris into the hopper at a time. Do
• Allow the material in the hopper to be drawn into the blades and
A noise will be heard when finding the start of the compression
grip on fhe starter handle. Let the rope rewind slowly.
move choke control gradually away from the throttle control.
control and repeat steps 5 through
position when operating the chipper shredder.
Move throttle control lever to slow (turtle) position.
Whenever possible, gradually reduce engine speed before
stopping engine.
Move throtfle confrol lever to STOP or OFF position.
Disconnect spark plug wire and ground it to the retaining post to
prevent accidental starting while the equipment is unattended.
1.
CHIPPING
Branches up to 3” in diameter can be fed into the chipper chute.
Observe the following guidelines when chipping branches:
• Keep both hands firmly on the branch as you feed if into the
chipper chute.
• Never feed more than one branch into the chipper chute at a time.
• Never feed anything other than branches (or wood) into the
chipper chute.
• Apply intermittent pressure (force, in short pulses) while feeding
larger (3-inch diameter) branches into the chipper chute, to avoid
bogging or stalling the engine.
IMPORTANT:
three (3) inches into the chipper chute. Doing so can result in serious
damage to your unit's chipper blades, flails or impeller.
NOTE:
chipper blades. If a noticeable loss in performance is encountered
while chipping branches, the chipper blades should be replaced.
LOWERING THE HOPPER ASSEMBLY
1. With one hand grasp the handle at the top of the hopper assem
bly and lift slightly.
2. With the other hand pull out on the release rod and lower the
hopper assembly to the ground. See Figure 10.
TO EMPTY BAG
1. Un-clip drawstring and loosen bag from chute deflector opening.
2. Empty bag and reattach to the discharge chute opening. Pull on
(leaves, twigs, pine cones, etc.).
thoroughly dried out. Fresh vines do not shred well and tend to
wrap themselves around the impeller and flails.
not overload the hopper.
shredded before adding additional debris to the hopper. Failure to
due so may result in a clogged hopper, clogged chute deflector or
a stalled engine.
the drawstring until the bag is tight around the chute opening and
clip the drawstring tight against the chute deflector.
IMPORTANT:
discharge area. If the flail screen becomes clogged, remove and
clean as instructed in the Service and Maintenance section. For best
performance, it is also important to keep the chipper blade sharp.
For best performance, always operate the unit with sharp
Never feed branches with a diameter greater than
The flail screen is located inside the housing in the
13
AND MAINTENANCE
Awarning
Always stop engine and disconnect spark plug wire before performing
any maintenance or adjustments. Always wear safety glasses during
operation or while performing any adjustments or repairs.
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 warranty, operator must maintain the equipment as
instructed here.
• Some adjustments will have to be made periodically to maintain
your unit properly.
• Periodically check all fasteners and make sure these are tight.
ENGINE MAINTENANCE
Checking the Spark Plug
Clean spark plug and reset the electrode gap to 0.030” at least once a
season; replace every 100 hours of operation.
• Clean area around the spark plug base. Do not sandblast spark
plug. Spark plug should be cleaned by scraping or wire brushing
and washing with a commercial solvent.
• Remove and inspect the spark plug. Check gap to make sure it is
set at .030”. See Figure 11.
• Replace the spark plug if electrodes are pitted, burned, or the
porcelain is cracked.
Servicing the Air Cleaner
A CAUTION
Do not use pressurized air or solvents to clean the air cleaner
cartridge.
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. The air cleaner consists of a pleated filter and
a pre-cleaner that can be washed and reused. Never run the engine
without an air cleaner completely assembled.
Clean or replace the air cleaner every 25 hours of operation.
1. Loosen screws that hold the air filter cover.
2. Open cover and remove cartridge. See Figure 12.
3. Remove pre-cleaner from the cartridge. Discard old cartridge.
4. Install new cartridge. Install lip on pre-cleaner at the bottom of
cartridge pleats.
5. Close the cover and tighten screws.
NOTE: If the filter is torn or damaged in any way, replace it.
Check Engine Oil
1. Stop engine and wait several minutes before checking oil level.
With engine on level ground, the oil must be to FULL mark on
dipstick.
2. Remove oil fill dipstick and wipe clean with cloth.
3. Replace and tighten dipstick. Remove and check oil level. Level
should be at FULL mark.
4. If needed, add oil slowly - recheck. Do not overfill.
5. Wipe dipstick clean, replace and tighten. Remove and check oil
level. Oil level should be at FULL line on dipstick.
Do not overfil. Overfilling with oil may cause the engine to not start,
or hard starting, if over the FULL mark on the dipstick, drain oil to
reduce oil level to FULL mark on dipstick.
A CAUTION
14
SERVICE AND MAINTENANCE
Change Engine Oil
« Only use high quality detergent oil rated with API service
classification SF, SG, or SH. Select the oil’s SAE viscosity grade
according to the expected operating temperature. Refer to opera
tion section for viscosity chart.
* Change engine oil after the first five to eight hours of operation,
and every fifty hours or every season thereafter. Change oil every
twenty five hours when operating engine under heavy load or in
high temperatures.
To Drain Oil
1. Drain the fuel from the tank by running the engine until the fuel
tank is empty.
2. With engine OFF but still warm, disconnect spark plug wire and
keep it away from spark plug.
3. Remove square oil drain plug located at the base of the engine,
and drain oil into an appropriate receptacle. See Figure 13.
A CAUTION
Used oil is a hazardous waste product. Dispose of used oil properly.
Do not discard with household waste. Check with your local authori
ties or Sears Service Center for safe disposal/recycling facilities.
Do not use water to clean engine parts. Water could contaminate fuel
system. Use a brush or dry cloth.
A CAUTION
4. Replace and tighten the oil drain plug.
5. When engine is drained of all oil, place engine level. Refill with
approximately 20 oz. of fresh oil. Fill to FULL line on dipstick. Do
not overfill. Refer to
6. Replace oil fill dipstick and tighten.
7. Replace spark plug wire before starting.
Gas And Oil Fill-Up
in OPERATION section.
Awarning
Temperature of muffler and nearby areas may exceed 150° F (65°C).
Avoid these areas.
Service Muffler
• inspect muffler periodically, and replace if necessary. Replace
ment parts for the muffler must be the same and installed in the
same position as the original parts.
Clean Engine
• Daily or before every use, clean grass, chaff or accumulated
debris from engine. Keep linkage, spring, and controls clean.
Keep area around and behind muffler free of any combustible
debris.
• Keeping engine clean allows air movement around engine.
• Engine parts should be kept clean to reduce the risk of overheat
ing and ignition of accumulated debris.
Carburetor Adjustment
The carburetor on this engine is not adjustable.
Engine Speed
Do not attempt to alter the engine speed by tampering with the
engine's governor linkage. Doing so could result in serious personal
injury and damage to the engine. The engine RPM has been set at
the factory.
LUBRICATION
• Hopper Assemblyassembly with light oil once a season.
• Discharge Chutechute with light oil once a season.
• Release Rodonce a season.
CLEAN EQUIPMENT
• Clean the chipper shredder thoroughly after each use.
• Wash bag periodically with water. Allow to dry thoroughly in
shade.
• if the flail screen becomes clogged, remove and clean as
instructed below.
NOTE: Cleaning with a forceful spray of water is not recommended as
it could contaminate the fuel system.
Awarning
Lubricate the pivot points on the hopper
Lubricate the pivot points on the discharge
Lubricate the release rod and spring with light oil
15
AND MAINTENANCE
A WARNING
Before performing any type of maintenance on the machine, wait for
all parts to stop moving and disconnect the spark plug wire. Failure
to follow this instruction could result in personal injury or property
damage.
REMOVING THE FLAIL SCREEN
If the discharge area becomes clogged, remove the flail screen and
clean area as follows:
1. Stop the engine. Make certain the chipper shredder has come to
a complete stop.
2. Disconnect spark plug wire from spark plug and ground against
the engine.
3. a. Remove the bag and two wing knobs on each side of the chute
deflector. See Figure 14.
b. Lift the chute deflector up to keep it out of the way.
c. Remove the two hairpin clips from each clevis pin which extend
through the housing and remove pins.
d. Remove the flail screen from inside the housing and clean the
screen by scraping or washing with water. See Figure 14.
4. Reinstall the screen, making certain to reassemble the flail screen
with the curve side down.
5. Reattach the chute deflector with the hardware previously removed
and connect the bag to unit.
SHARPENING OR REPLACING CHIPPER
BLADES
1. Disconnect the spark plug wire and ground against the engine.
2. Remove the flail screen as instructed in the previous section.
3. Remove the chipper chute by removing three hex nuts and
washers.
4. Remove the chipper chute support brace from the frame by
removing the hex bolts.
5. Rotate impeller assembly by hand until you locate one of two
chipper blades in the chipper chute opening.
6. Remove the blade by removing the internal hex screws, lock
washers, and hex nuts which secure it to the impeller. Retain the
hardware. See Figure 15.
NOTE:
and a 1/2” box (or socket) wrench on the inside of the impeller. Hold
the Allen wrench stationary and rotate the box (or socket) wrench to
loosen the nut.
7. install a replacement blade (Part No. 781-0490) with the hardware
IMPORTANT:
gloves. Follow the original angle of grind and make sure to remove an
equal amount from each blade.
Use a 3/16” hex key (Allen) wrench on the outside of the blade
8. To replace the other blade, rotate the impeller to expose the
second blade and repeat the steps above.
NOTE:
facing upward. Torque hardware to 250 - 300 in. lbs.
removed earlier or sharpen.
When sharpening the blade, protect hands by using
The impeller’s chipper blades and shredder blade are sharp. Wear
leather work gloves to protect your hands.
Make certain blades are reassembled with the sharp edge
Awarning
16
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