Craftsman 247.775870 User Manual

Page 1
Owner’s Manual
CRRFTSMflN
6.5 Horse Power
3” diameter chipping capacity
CHIPPER-SHREDDER
Model No.
247.775870
CAUTION: Before using this product,

Sears, Roebuck and Co., Hoffman Estates, IL 60179, U.S.A.

Printed in U.S.A.
770-1231A
Page 2

TABLE OF CONTENTS

Content
Warranty Information Safe Operation Practices Assembly Operation Maintenance
Page
2 3 5 8 Repair Parts 11
Content
Service & Adjustment Off-Season Storage Trouble-Shooting
Page
14 16 17 18

WARRANTY INFORMATION

One-Year Warranty on Craftsman Chipper-Shredder
For one year from the date of purchase, when this Craftsman chipper-shredder is maintained, lubricated, and tuned up according to the operating and maintenance instructions in the operator’s manual, Sears will repair, free of charge, any defect in material or woriimanship.
This warranty excludes the blades, chipper blades, flails, air cleaners, spark plugs, catcher bags and tires which are expendable parts and become worn during normal use.
If this chipper-shredder is used for commercial or rental purposes, this warranty applies for only 30 days from the date of purchase.
WARRANTY SERVICE IS AVAILABLE BY CONTACTING THE NEAREST SEARS SERVICE CENTER IN THE UNITED STATES. THIS WARRANTY APPLIES ONLY WHILE THIS PRODUCT IS IN USE 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., D/817WA, Hoffman Estates, II60179

ACCESSORIES

These accessories were available when the chipper shredder was purchased. They are also available at most Sears retail outlets and service centers. Most Sears stores can order repair parts for you when you provide the model number of your chipper-shredder.
PRODUCT
HORSEPOWER: CRANKCASE CAPACITY: FUEL TANK CAPACITY: SPARK PLUG: SPARK PLUG GAP:
Spark Plug
SPECIFICATION
21 oz. SAE 30 ENGINE OIL
3 QUARTS(UNLEADED)
Air Filter
Champion (N4C)
Engine Gas Oil Can
6.5 H.P.
.030
Stabilizer
Model Number Serial Number Date of Purchase Record both serial number and date of purchase and
keep in a safe place for future reference.
............
..................................
247.775870.
............................
Tow Hitch Kit
Page 3
A

SAFE OPERATION PRACTICES

This symbol points out important safety instructions which, if not followed, could endanger the per sonal 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 per
A
sonal injury. When you see this symbol—heed its warning.
Your chipper-shredder was built to be operated according to the ruies for safe operation in
n AMr'PR' manuai. As with any type of power equipment, carelessness or error on the part of the oper­DANGc . result in serious injury. If you violate any of these rules, you may cause serious
injury to yourself or others.
WARNING: The Engine Exhaust from this product contains chemicals known to
A
the State of California to cause cancer, birth defects or other reproductive harm.

GENERAL OPERATION

Read this owner’s guide 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.
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.
Wear stu rdy, rough-so led wo rk shoes and close f itti ng
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.
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 kick-back 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.
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.
a. Inspect for damage. b. Repair or replace any damaged parts. c. 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.
Page 4
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 afire 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 discharge chute, 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.

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.

SERVICE

c. Extinguish all cigarettes, cigars, pipes and other
sources of ignition.
d. Never refuel unit indoors because flammable
vapors will accumulate in the area.
e. 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 mufflerfreeof
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.
Nevertamper 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. Over-speeding the engine is dangerous and will cause damage to the engine and to other moving parts of the machine.
Use extreme care in handling gasoline and other fuels. They are extremely flammable and the vapors are explosive.
a. 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.
b. Replace gasoline cap securely and wipe off any
spilled gasoline before starting the engine as it
may cause a fire or explosion.
This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forest­covered, 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
Àk
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 Sears Authorized Service Center (See the REPAIR PARTS section of this manual.)

YOUR RESPONSIBILITY

Restrict the use of this power machine to persons who read, understand and follow the
A
warnings and instructions in this manual and on
the machine.
SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE.
Page 5
ASSEMBLY

REMOVE CHIPPER-SHREDDER FROM CARTON

Cut the corners of the carton.
Remove all packing inserts,
Remove all loose parts including owner’s
Roll chipper-shredder out of the carton,
Make certain all parts and literature have been

LOOSE PARTS

{Refer to figure 1.)
manual. See figure 1.
removed before the carton is discarded.
a. Hopper Assembly b. Discharge Chute c. Catcher Bag
d. Bottle of Oil e. Safety Glasses (not shown in figure 1) f. Owner's Manual (not shown in figure 1) g. Chipper Chute
or oil in the engine. After assembly, see OPERATION section of this manual for proper fuel and engine oil fill-up.
NOTE: To determine right and left hand sides of your
chipper-shredder, stand behind the unit with the engine farthest away from you.
Your chipper-shredder has been completely assembled
at the factory, except for the hopper assembly, discharge chute and the catcher bag. These parts are shipped loose in the carton. A pair of safety glasses and a bottle of oil are also included in the carton.

TOOLS REQUIRED

1. 1 /2" or Adjustable Wrenches
2. 7/16" or Adjustable Wrenches
3. 9/16" or Adjustable Wrenches
4. Funnel

DISCONNECTING SPARK PLUG

Disconnect the spark plug wire and move it away from the spark plug before assembling the chipper-shredder. See figure 2.
Figure 2
Page 6

ATTACHING DISCHARGE CHUTE

Remove the wing knobs from each side of the discharge opening on the chipper-shredder. See figure 3.
Using two 7/16" wrenches, remove hex lock nut, two spacers, and the hex bolt from top of the
housing assembiy. For easy assembly, do not remove the second spacer from the hex bolt,
Place the discharge chute in position on the
discharge opening. Insert hex bolt and spacer through hinge on discharge chute and housing
(spacer fits inside of hinge). See figure 3 inset.
Insert the hex bolt (that you earlier removed) from the left through the hole on the hopper and the inlet guide. Insert the hex nut onto the bolt from the other side. See figure 4 inset.
Hopper Pivot Door
Stop
other half of the hinge. Secure with hex lock nut. Tighten securely.
Secure both sides of discharge chute to housing using wing knobs that you earlier removed.
Tighten wing knobs.

ATTACHING HOPPER ASSEMBLY

Remove the 8-3/8” long hex bolt and the hex nut from the bottom of the inlet guide opening. See figure 4 inset.
Place the hopper assembly on the ground and
hold it in the position shown in step 1 in figure 4.
Holding the hopper, push hopper pivot door down inside the hopper. See figure 4.
Slide the hopper assembly towards the chipper shredder housing so that the upper guide on the
hopper assembly slides under the stop washer on each side of the inlet guide. See figure 4.
Align the two holes (one on each side) of the
lower hopper with the two holes (one on each side) of the inlet guide.
Inlet Guide
Hopper
Figure 4
Tighten the bolt to remove all sideplay ( after tightening the bolt, the hopper will pivot up and down). This will secure the hopper assembly to the inlet guide. To ra/sethe hopper, hold the hopper by the
hand-hold and lih it up till it clicks into position.See figure 5.
• To /owerthe hopper, hold the hopper by the hand-hold and pull the release bar. The hopper should drop down. See figure 5.
The flap control rod is already attached to the hopper
at the top. The other end of the rod has to be attached
Page 7
to the stop washer on the inlet guide. See figure 6.
WARNING: This flap control rod is a safety
A
device to hold the flap in place inside the
hopper while shredding branches. Do not
operate the chipper-shredder without
properly attaching this flap control rod.
Stop
Hex Washer*
and hex nuts that you earlier removed. Do not tighten the nuts at this time. Make sure to place the cupped side of the washer against the chipper chute. Align the holes towards the front opening of the chute with the holes on the brace. See figure 7.
Insert one each of the hex bolts, lock nuts, and flat washers {that you earlier removed) through each hole in the chute and the brace. Tighten these bolts to secure brace to the chute. Tighten bolts securing the brace to the lower frame. These bolts had been removed earlier. Tighten the three nuts on the weld studs.
Cupped
Chipper Chute
Washer
* Do not remove these hardware from the inlet guide
assembly while attaching the flap control rod.
Figure 6
Raise the hopper till it clicks into position.
Unscrew the shoulder bolt from the stop washer
on the inlet guide. See figure 6.
Align the loose end of the flap control rod with
the stop washer on the inlet guide.
Slide the shoulder bolt through the opening in
the flap control rod. Secure tightly. See figure 6.

ATTACHING THE CHIPPER CHUTE

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.
Remove the three cupped washers and hex nuts from the weld studs beside the opening on
the left side of the housing. See figure 7.
Remove the two sets of hex bolt, lock nut, and
flat washer from the two holes on the upper end
of the brace as shown in figure 7.
Place the chipper chute over the weld studs so
the slot on the chute is towards the bottom. Align the three holes at the bottom of the chute with the three weld studs,
Secure with the three pairs of cupped washers

ATTACHING THE CATCHER BAG

Your chipper-shredder is equipped with a catcher bag to catch the shredded material.
To attach the bag, place the bag opening over the discharge chute so it completely covers the
discharge chute and goes over the chute
flanges.
Depress the plunger on the draw-string, and pull
on the draw-string until the bag is tight around the chute opening. Release plunger to lock it into position. See figure 8.
Figure 8
Page 8
OPERATION
Read this owner’s manual and safety rules before operating your chipper-shredder. Compare the illustration in figure 9 with your chipper-shredder to famiiiarize yourself with the location of various controls and adjustments. Save this manuai for future reference.
The operation of any chipper-shredder can result in foreign objects being thrown into the eyes, which can result in severe eye damage. Always wear safety glasses provided with the chipper-shredder or eye shieids before chipping or shredding, or while performing any adjustments or repairs.
Hopper Assembly
Primer Button
Figure 9

OPERATING CONTROLS

Release Bar Used to release the hopper when raising or lowering. Starter Handle Used to manually start the engine. Throttle Control Regulates speed of the engine. Catcher Bag Used to collect the shredded material, (not shown)
Hopper Assembly
Allows leaves and small branches upto 0.5 “ diameter to be fed into the impeller for chipping and shredding.
Chipper Chute
Throttle Control
Lower the hopper to collect raked material for
shredding. Chipper Chute Allows bulky vegetation like stalks or heavy branches
upto 3” diameter to be fed into the impeller for
chipping and shredding.
Primer Button Fills carburetor with gasoline to aid in starting a cold
engine.
Starter Handle

STOPPING ENGINE

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

MEETS ANSI SAFETY STANDARDS

Sears chipper-shredders conform to the safety standard B 71.6 -1990 of the American National Standards Institute,
Page 9
WARNING: Before using your chipper shredder, refer to the safety rules on
A
pages 3 and 4 of this manual again. Always be careful.

GAS AND OIL FILL-UP

Tilt chipper-shredder toward the left (from behind the hopper). See figure 11. Check oil level. Put the unit back on tiie ground carefully.
WARNING: Do not tilt unit holding the hand-hoid.
A
Oil (Packed with unit)
• Only use high quality detergent oil rated with API service classification SF, SG orSH. Select the oil’s viscosity grade according to your expected operating temperature. Follow the chart below.
Colder
5W30 SAE 30
NOTE: Although multi-viscosity oils (5W30, 10W30,
etc.) improve starting in cold weather, these muliiviscosity oils will result in increased oil
consumption when used above 32°F. Check the oil level more frequently to avoid possible engine damage from running low on oil.
Fill engine with oil as follows.
• Remove dipstick. See figure 10.
1. Remove dipstick
32°F
Warmer
Add oii if necessary. Replace dipstick and tighten.
Figure 11
NOTE: Do not overfill. Oil bottle packed with unit
contains 20 oz. of oil.
Gasoline
With chipper-shredder on levei ground, use a funnel to fill engine with oil to FULL mark on dipstick. Capacity is approximateiy 20 ounces. Be careful not to overfill.
Warning: Experience indicates that alcohol blended fuels (called gasohol or using ethanol or methanol) 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. Never use engine or carburetor cleaner products in the fuel tank or
permanent damage may occur. Fill gas tank with gas as follows.
Remove fuel cap. See figure 10.
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 the container.
Fill fuel tank with fresh, lead-free gasoline. DO NOT use Ethyl or high octane gasoline.Replace fuel cap.
Page 10
WARNING: Do not fill closer than 1 /2 inch
A
Check the fuel level periodically to avoid
If the unit runs out of gas as it is shredding or
of top of fuel tank to prevent spills and to allow for fuel expansion. If gasoline is accidently spilled, move chipper-shredder away from area of spill. Avoid creating any
source of ignition until gasoline vapors have
disappeared.
running out of gasoline while operating the
chipper-shredder. chipping, it may be necessary to unclog the unit
before it can be restarted. Refer to Removing the Flail Screen in SERVICE AND ADJUSTMENT section.

STARTING ENGINE

WARNING: Be sure no one other than
A
NOTE: To prevent the unit from sliding, place your
foot firmly against the tire.
Attach spark plug wire and rubber boot to spark
1. Attach spark plug wire
the operator is standing near the chipper
shredder while starting or operating. Do not
operate this chipper-shredder unless the
discharge chute has been properly installed and is secured with the hand knobs.
plug. See figure 12.
Pull rope with a rapid full arm stroke. Let rope
return to starter slowly. See figure 12.
When engine starts, move throttle control to
IDLE position for a few minutes warm-up.
NOTE: A noise will be heard when finding the start of
the compression cycle. This noise is caused by the flails and fingers which are part of the shredding mechanism falling into place, and should be expected. In addition, the flails and fingers will be noisy after the engine is started, until the impeller reaches full speed.

STOPPING ENGINE

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

USING YOUR CHIPPER-SHREDDER

WARNING: Do not attempt to shred or
A
The chipper-shredder is designed for two different methods of operation.
chip any material other than vegetation found in a normal yard {i.e., branches, leaves, twigs, etc.).
a. 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. See figure 13.
b. Bulky material, such as stalks or heavy
branches, up to 3" in diameter can be fed into the chipper chute. See figure 13.
Figure 12
Place the throttle control lever in FAST position (UP). Push primer 2 or 3 times, waiting a couple of
seconds between each push. In cold weather (50°F or below) prime 5 times.
Grasp starter handle and pull rope out slowly until engine reaches start of compression cycle (rope will pull slightly harder at this point). Let
the rope rewind slowly.
10
WARNING: Do not put material larger
than is specified into the hopper or the
A
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.
A
For best performance, it is important to keep the shredding blade and the chipper blades sharp. If the composition of the material being discharged changes (becomes stringy, etc.) or if the rate at which the material is discharged slows down considerably, it is likely that the shredding blade and/or chipper
chipper chute. Personal injury and/or damage to the machine could result.
WARNING: Never remove discharge
chute till the unit has completely stopped.
Never turn off the engine untii all chipping is completed.
Page 11
blades are dull and need to be sharpened or replaced. To sharpen or replace the blades, refer to Service and Adjustments section, IMPORTANT: There is a flail screen located inside the housing in the discharge area. If the flail screen becomes clogged, remove and clean as instructed in the Service and Adjustments section on page 14,
WARNING: The chipper-shredder discharges materials with considerable velocity. Keep away from
A
the area around the discharge chute. Always stop the engine and disconnect spark plug wire when removing or attaching the bag, changing containers, or removing the shredded material. Wear safety glasses and gloves whenever using your chipper-shredder.
Shred material upto 1/2 inch in diameter
TO LOWER THE HOPPER ASSEMBLY
To lower the hopper assembly, use one hand to grasp the hand-hold at the top of the hopper assembly and lift slightly. Refer to figure 5.
Pull up on the release bar, and lower the hopper assembly to the ground. Release the bar. Refer to figure 5.
V^Chip materiai upto
^3 inches*
in diameter
Lower the hopper to collect raked material for shredding
Figure 13
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.
Some adjustments will be needed periodically for proper maintenance of your chipper shredder. These adjustments are covered in the following section of this manual,
All adjustments mentioned here should be checked at least once each season.
Follow the maintenance schedule given below.
mv-
Periodically check all fasteners and make sure
these are tight,

CLEANING

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.
Wash the bag periodically with water. Allow to
dry thoroughly in the shade. Do not use heat.
WARNING: Always stop the engine and
disconnect the spark plug wire before
A
performing any maintenance or adjustments. Never remove discharge chute till the engine has completely stopped.
11
Page 12

ENGINE MAINTENANCE

Engine Oil
Only use high quality detergent oil rated with API service classification SF, SG or SH, Select the oil's viscosity grade according to your
expected operating temperature. Refer to page 9 of this manual for viscosity chart.
The four-cycle engine of your chipper-shredder will normally consume some oil. Therefore, check engine oil level regularly approximately
every five hours of operation and before each usage.
Stop engine and wait several minutes before checking oil level. With engine on level ground, the oil must be to FULL mark on dipstick.
Change engine oil after the first five hours of operation, and every twenty-five hours thereafter.
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. The air cleaner consists of a pre cleaner or foam filter, and a paper filter. Never run the engine without air cleaner completely assembled.
Wing Nut
Cover
To Drain Oil
Drain oil while engine is warm. Follow the instructions
given below.
Remove oil drain plug. Catch oil in a suitable container.
When engine is drained of all oil, replace drain plug securely.
Refill with fresh oil. Refer to GAS AND OIL FILL
UP section. Replace dipstick.

CUSTOMER RESPONSIBILITIES

/ / / /
MAINTENANCE
SCHEDULE
1— o
Oil pivot points
Q O
CC
Clean shredder
Q.
Pre-Cleaner
Wing Nut
Figure 14
/
<?
iS-
/
SERVICE
DATES
Check engine oil Change engine oil
LU Z
Service air cleaner
CD Z UJ
Clean engine
Reset spark plug
Clean muffler
</
12
Page 13
To Service Air Cleaner:
1. Service pre-cleaner after every 25 hours of use,
or at least once a season.
2. Service filter every 100 hours of use, or at least
once a season.
3. Service pre-cleaner and filter more often under
dusty conditions.
Remove wing nut and cover. For location, see
figure 14 inset.
Slide pre-cleaner off filter. Clean the inside of
base and cover thoroughly. See figure 14.
Clean pre-cleaner as follows:
c. Wash in water and detergent solution, and
squeeze (do nottwist) until all dirt is removed.
d. Rinse thoroughly in clear water. e. Wrap in a clean cloth and squeeze (do not
twist) until completely dry, or allow to air dry.
f. Saturate with engine oil and squeeze (don’t
twist) to distribute oil and remove excess oil.
NOTE: If the pre-cleaner is torn or damaged in any
way, replace it.
If necessary, replace paper fitter —do not
attempt to clean. Install new filter on base.
Slide pre-cleaner over filter.
Install cover and wing nut,
Tighten wing nut securely. Clean Engine
Clean engine periodically. Remove dirt and
debris with a cloth or brush.
Frequently remove grass clippings, dirt and
debris from cooling fins, air intake screen and
levers and linkage. This will help ensure adequate cooling and correct engine speed. See figure 15.
WARNING: Temperature of muffler and
A
Spark Plug
• Clean the spark plug and reset the gap to .030"
NOTE: Do not sandblast spark plug. Sparkplug
should be cleaned by scraping or wire brushing and washing with a commercial solvent.
Muffler
• Inspect periodically, and replace if necessary. If
nearby areas may exceed 150® F(65°C).
Avoid these areas.
at least once a season or every 50 hours of operation. See figure 16. Spark plug replacement is recommended at the start of each season. Refer to engine parts list for correct spark plug type.
.030 ” Feeler
your engine is equipped with a spark arrester screen assembly, remove every 50 hours for cleaning and inspection. Replace if damaged.
WARNING: Do not operate the chipper
shredder without a muffler, or tamper with the exhaust system. Damaged mufflers or spark arresters could create a fire hazard.

LUBRICATION

• Yearly or every 25 hours, whichever occurs first, remove the blower housing and clean the areas
shown in figure 15 to avoid overspeeding, overheating and engine damage. Clean more often if necessary.
NOTE: Cleaning with a forceful spray of waferrs not
recommended as water could contaminate the fuel system.
Lubricate the pivot points on the release bar, hopper
assembly, and discharge chute once a season using a light oil. Refer to the lubrication chart in figure 17.
Figure 17
13
Page 14

SERVICE & ADJUSTMENTS

CLEANING THE FLAIL SCREEN

If the discharge area becomes dogged, remove the flail screen and clean area as follows.
Stop engine, make certain the chipper-shredder has come to a complete stop and disconnect spark plug wire from the spark plug.
Remove the two hand knobs on each side of the discharge chute. Lift the discharge chute up, and keep it out of the way.
Remove two hairpin clips from the clevis pins which extend through the housing. Remove the clevis pins. See figure 18.
Discharge Chute
Remove the flail screen as instructed in previous
section.
Using a 1/2” wrench, remove the chipper chute by removing three hex nuts and washers. See figure 18. (Only two hex nut positions shown in figure.)
NOTE: When reassembling, the cupped washer goes
on the slot toward the bottom of the chipper chute with the cupped side against the chute.
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" alien wrench on the outside of the blade and 1 /2“ wrench on the impeller assembly
(inside the housing). See figure 19.
Blade
Discharge Chute
Figure 18
Pull the flail screen from inside the housing. See figure 18. Clean the screen by scraping or washing with water.
Reinstall the screen. 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.

SHARPENING OR REPLACING THE BLADES

Chipper Blades
Disconnect spark plug wire and move it away from spark plug.
Sharp Edge
Figure 19
Remove the other blade in the same manner. Replace or sharpen blades. If sharpening, make certain to remove an equal
amount from each blade.
Reassemble in reverse order. Make certain blades are reassembled with the sharp edge facing the direction shown in figure 19 (sharp edge is assembled toward the slotted opening at the bottom). Torque bolts and nuts to 250-350 inch-pounds.
14
Page 15
Shredding Blade The shredding blade may be removed for sharpening
or replacement as follows.
Disconnect spark plug wire and move it away
from spark plug.
Lower the hopper assembly. Block up the
housing. See figure 20.
Weld Bolt
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. 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 21.
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
2. Blade should be parallel to ground
Slîik
____
O 0 o
BU«.»
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.
Remove the back-up plate.
NOTE: When reassembling, make certain the
embossed tab faces inward towards the impeller, and opening on the back-up plate is toward the bottom of the unit.
Remove the two hand knobs and cupped
washers which secure the discharge chute.
Raise the discharge chute.
Insert a 112" 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.
Remove the two outside screws on the blade,
using a 3/16" alien wrench and a 1/2" wrench.
Remove the blade by removing the center bolt,
lock washer and flat washer.
WARNING: Use caution when removing
A
When sharpening the blade, follow the original
the blade to avoid contacting the weld bolts on the housing.
Ground

Figure 21

ADJUSTING CARBURETOR

WARNING: If any adjustments are made to
A
The carburetor has been pre-set at the factory and should not require adjustment. However, if your engine does not operate properly due to suspected carburetor problems, take your chipper-shredder to your nearest SEARS service center.
the engine while the engine is running (e.g. carburetor), keep clear of all moving parts.
Be careful of heated surfaces and muffler.

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 persona! injury. If you believe the engine is running too fast or too slow, take your chipper-shredder to the nearest SEARS service center for repair and adjustment.
15
Page 16
STORAGE
WARNING: Never store machine with fuel
A
A yearly check-up by your local Sears service center is a good way to make certain your chipper-shredder will provide maximum performance for the next season.
in the fuel tank inside of building where fumes may reach an open flame or spark, or where ignition sources are present such as hot water and space heaters, furnaces, clothes dryers, stoves, electric motors, etc.

CHIPPER-SHREDDER

Clean the chipper-shredder thoroughly.
Wipe unit with an oiled rag to prevent rust (use a
light oil or silicone).

ENGINE

IMPORTANT: It is important to prevent gum deposits
from forming in essential fuel system parts such as carburetor, fuel filter, fuel hose, or tank during storage. Also, experience indicates that alcohol blended fuels (called gasohol or using ethanol or methanol) 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.
Drain the fuel tank.
Start the engine and let it run until the fuel lines
and carburetor are empty.
Never use engine or carburetor cleaner products in the fuel tank or permanent damage may occur.
Use fresh fuel next season.
NOTE: Fuel stabilizer is an acceptable alternative in
minimizing the formation of fuel gum deposits during storage.
Add stabilizer to gasoline in fuel tank or storage
container.
Always follow the mix ratio found on stabilizer
container.
Run engine at least 10 minutes after adding stabilizer to allow the stabilizer to reach the carburetor.
Do not drain the gas tank and carburetor if using fuel stabilizer. Drain all the oil from the crankcase
(this should be done after the engine has been
operated and is still warm) and refill the crankcase with fresh oil.
If you have drained the fuel tank, protect the
inside of the engine as follows.
Remove spark plug, pour approximately 1/2 ounce (approximately one tablespoon) of engine oil into cylinder and crank slowly to distribute oil.
Replace spark plug.

OTHER

Do not store gasoline from one season to another.
Replace your gasoline can if your can starts to
rust. Rust and/or dirt in your gasoline will cause problems. Store unit in a clean, dry area. Do not
store next to corrosive materials, such as fertilizer.
NOTE: If storing in an unventilated or metal storage
shed, be certain to rustproof the equipment by coating with a light oil or silicone.
16
Page 17

TROUBLE-SHOOTING

PROBLEM
Engine fails to start
Loss of power; operation erratic
Engine overheats
POSSIBLE CAUSE
1. Fuel tank empty, or stale fuel
2. Spark plug wire disconnected
3. Faulty spark plug
4. Throttle control not in correct
position
1. Spark plug wire loose
2. Unit running on Choke
3. Blocked fuel line or stale fuel
4. Water or dirt in fuel system
5. Carburetor out of adjustment
6. Dirty air cleaner
1. Carburetor not adjusted properly
2. Engine oil level low
CORRECTIVE ACTION
1. Fill tank with clean, fresh fuel
2. Connect wire to spark plug.
3. Clean, adjust gap or replace.
4. Move throttle control to FAST
position
1. Connect and tighten spark plug
wire.
2, Move choke lever to OFF
position.
3. Clean fuel line; fill tank with
clean, fresh gasoline.
4. Disconnect fuel line at carburetor to drain fuel tank. Refill with fresh fuel.
5. Contact your SEARS service center.
6. Sen/ice air cleaner.
1. Contact your SEARS service
center.
2. Fill crankcase with proper oil.
Too much vibration
Unit does not discharge
Rate of discharge slows
considerably or composition of discharged material changes
1. Loose parts or damaged
impeller
1. Discharge chute clogged
2. Foreign object lodged in
impeller
1. Shredding blade and/or chipping
blade dull
For repairs beyond the minor
. adjustments listed above, please
W /M
contact your nearest SEARS service center.
1. Stop engine immediately and disconnect spark plug wire. Tighten all bolts and nuts. Make all necessary repairs. If vibration continues, have unit serviced by a SEARS service center.
1. Stop engine immediately and disconnect spark plug wire, clean flail screen and inside of blower housing.
2. Stop engine immediately and disconnect spark plug wire.
Remove lodged object.
1. Sharpen or replace blade(s).
17
Page 18
PARTS LIST
SEARS CRAFTSMAN 6.5 H.P. CHIPPER-SHREDDER MODEL 247.775870
20 27
4 : ■ f Id.
. 'i. .
44 V
^ /Vi'’.-"-
18
Page 19
SEARS CRAFTSMAN 6.5 H.P. CHIPPER-SHREDDER MODEL 247.775870
Key
No
Part No Description
770-1231A
Owner’s Manual
1 11480 Stop Washer 2 681-0111 Inlet Guide Assembly 3 681-0144 Arm Bracket Assembly 4 710-0542
Hex Flange Bolt: 5/16-18 x
8.375” (gr.5)
5 710-0607
Hex Washer Head Self-Tap­ping Screw: 5/16-18 x 0.5”
6 710-3256
Button-Head Screw 1/4-20 x
0.5” 7 712-0429 Lock Nut: 5/16-18 8 712-3027
Hex Flange Lock Nut: 1/4-20
g 714-0104 Internal Cotter Pin
10
715-0129 Spiral Pin
11
726-0106
Cap Nut 12 726-0135 Speed Cap Nut 13 728-0175 Pop Rivet 14 732-0546 Torsion Spring 15 732-0629 Hopper Door Spring 16 735-0127 Rubber Washer 17
735-0651
18
736-0119
19 738-0137A
Hopper Flap
Lock Washer
Shdr. Scr: .340 x .285 x 1/4-20
20 738-0946 Shdr. Scr: .56 x .165 x 5/16-18
21 747-0531A
22
747-0747
Ret. Rod: 5/16” dia.
Hopper Door Rod 23 747-1124 Flap Retaining Rod
24 25
747-1125 Flap Retaining Bail 781-0492A
Hopper Pivot Door 26 781-0633 Chute Flap Strip 27 781-0698 28
781-0715
29 781-0752
Hopper Lock Bracket
Shredder Plate 66 710-0751
Flap Mounting Bracket
Key
No
38 710-0157 39 736-0119 40 41 781-0490
Part No
710-1054
Description
Hex Bolt 5/16-24 X ,75” Lock Washer 5/16" Id Flat Hd, Screw 5/16-24 X .75”
Chipper Blade 42 719-0329 Flail Blade 43 715-0166 Spring Roll Pin 44 712-0411
Hex Top Lock Nut 5/16-24
(gr. 5) 45 735-0249 46 736-0247
Shredder Chute Flap
Flat Washer .406" ID X 1.25”
OD 47 711-0833B Clevis Pin 48 710-3008 49 710-0825
Hex Bolt 5/16-18X1.5”
Hex Bolt 1/4-20 X 3.75” 50 711-0835 Clevis Pin 51 736-0217 52 681-0004A 53 681-0117 54 726-0214 55 734-1600
Lock Washer
Flail Housing Assembly: Outer
Flail Housing Assembly: Inner
Push Cap 5/8” Dia.
Wheel Assembly Comp. 56 750-0786 Spacer 57 738-0814 58 712-3004A 59
736-0170 Special Lock Washer 60 781-051 OB 61 710-0805 62
781-0633 Chute Flap Strip 63 728-0175 64
Shredder Axle Hex Lock Nut 5/16-18 (Gr.5)
Shredder Frame Hex Bolt 5/16-18 X 1.5”
Pop Rivet Engine: Tecumseh 6.5 hp.
OHH65-71701
65 781-0735
Pin Retaining Clip
Hex Bolt 1/4-20 x .625
67
736-0173
Flat Washer ,28 I.D. x .74 O.D. 30 781-0754-0483 Upper Hopper 68 742-0571 Shredder Blade 31 781-0755-0483 Lower Hopper 69 32 720-0170 33
750-0793 34 714-0149B 35 681-0094-0483
Hand Knob
Chute Hinge Spacer
Internal Cotter Pin
Discharge Chute Assembly 36 781-0457 Shredder Screen 74 736-0242 37
681-0030
Impeller Assembly
712-3027 70 749-1004 71
710-0106 72 681-0068 73
712-3010 Hex Nut 5/16-18 (gr. 5)
Flanged Lock Nut
Chipper Chute Support
Hex Screw 1/4-20 x .625 (gr. 2)
Chipper Chute Assembly
Bell Washer .345” I.D. x .88”
75 731-1899 Chipper Chute
19
Page 20
SEARS CRAFTSMAN 6.5 H.P. ENGINE MODEL 143.986501 FOR CHIPPER-SHREDDER MODEL 247.775870
380
20
/ 239
Page 21
SEARS CRAFTSMAN 6.5 H.P. ENGINE MODEL 143.986501 FOR
CHIPPER-SHREDDER MODEL 247.775870
301
400
103 ^
>
"AU
>20
I
/
313
1
26
21
Page 22
SEARS CRAFTSMAN 6.5 H.P. ENGINE MODEL 143.986501 FOR CHIPPER-SHREDDER MODEL 247.775870
Key No. Part No. Description
-
1 2 4 5 30969 Extension Cap
14
15 16 37110 19 37111 Extension Spring 20
25 36621
25A 36622 26 30200
30 36831 35 651053 37 29216
38
40 40004 41 42 43
45 46 3261OA 48 35616 49 36611 Oil Dipper 50 60 64 65 30200 69 36624 70 72 75 80 81 82 83 86 89 610961 90 92 93
100 101 103 651007 110
37120A 26727 Dowel Pin 31857 Oil Drain Extension
651051 Washer 37108 Governor Rod
32600 Oil Seal
37109 Retaining Ring 40005
36070 36071 40006 Ring Set (Std.) 40007 Ring Set (.010” O.S.) 20381 32875A
37040 Camshaft 36623A 651015
36625 27897 Oil Seal
30574A 30590A Wcisher 30591 36057 650488 Screw, 1/4-20 x 1-1/4”
611205 Flywheel 650815 650816 Flywheel Nut 34443B 610118
36054 Ground Wire
RPM High 3450 to 3750 RPM Low 2000 to 2300
Cylinder (Incl. 2, 20 & 72)
Governor Lever
Air Baffle (Left) Air Baffle (Right) Screw, 10-24 x 9/16" Crankshaft Screw, 10-32 X 63/64” Lock Nut, 10-32
Piston, Pin, And Ring Set (Std.) Piston, Pin, And Ring Set (.010” O.S.) Piston & Pin Ass'y. (Std.) (Incl. 43) Piston & Pin Ass'y. (.010" O.S,)(lnct. 43)
Piston Pin Retaining Ring Connecting Rod Ass’y. (tnci. 46 & 49) Connecting Rod Boit Valve Lifter
Blower Housing Extension Screw, 1/4-20 x 1-1/8" Screw, 10-24 X 9/16” Cylinder Cover Gasket Cylinder Cover (Incl. 75 thru 83) Oil Drain Plug
Governor Shaft Governor Gear Ass’y. (Incl. 81)
Governor Spool Flywheel Key Belleville Washer Solid State Ignition
Spark Plug Cover Screw, Torx T-15, 10-24 x 15/16”
Key No. 119
120 125
126 130
130A 135 150 151 153 154 155 157 158 159 160 161 161A 173 178 182 184 185
186 36711 200 206 207 209 215 223 224 238 239 240 245 245A 250 251 252 260 261 261A 262 275 277 278 279 280 285 287 290 292 300 301
Part No. 36719
36721 36471 36472 29314C 29315C 650912
650999 34645 37039 31673 36649 650913 35624A 650914 36629 35626 36630A 651008 651012 36675A 650852 650451 26756 36631
36736 610973 36632 650821 36638 Control Knob 650451 36581 28820 27272A 36633 36046 36634 37073 650886 Wing Nut 650821 36864 651008 650821 651008 36722 Muffler 650988 36674 650852 36893 35985B
­30705 26460 36863 36246 Fuel Cap
Description
Cylinder Head Gasket Cylinder Head Exhaust Valve (Std.) (Incl. 151) Exhaust Valve (1/32” O.S.) (Incl. 151) Intake Valve (Std.) (Incl. 151) Intake Valve (1/32” O.S.) (Incl. 151) Screw, 5/16-18 x 1-1/2” Screw, 5/16-18x2-41/64” Spark Plug (N4C) Valve Spring Valve Spring Cap Push Rod Guide Rocker Arm Stud Rocker Arm Nut, 1/4-28 Push Rod Rocker Arm Cover Gasket Rocker Arm Cover Screw, 1/4-20 x 31/64” Stud Breather Tube Nut, 1/4-20 Screw, 1-4-20 X 1"
Carburetor to Intake Pipe Gasket
Intake Pipe Governor Link Control Bracket (Incl. 206 & 215) Terminal Throttle Link Screw, 10-32 X 1/2”
Screw, 1/4-20 x 1”
Intake Pipe Gasket Screw, 10-32 X 1/2” Air Cleaner Gasket Air Cleaner Body (Incl. 239) Air Cleaner Filter Air Cleaner Filter Air Cleaner Cover
Screw, 10-32 X 1/2” Blower Housing Screw, 1/4-20 x 31/64” Screw, 10-32 X 1/2” Screw, 1/4-20 x 31/64”
Screw, 1/4-20 x 2-9/32” Spacer
Nut & Lock Washer Heat Shield Starter Cup
Rivet (Can be purchased locally)
Fuel Line
Fuel Line Clamp
Fuel Tank (Incl. 292 & 301)
22
Page 23
SEARS CRAFTSMAN 6.5 H.P. ENGINE MODEL 143.986501 FOR CHIPPER-SHREDDER MODEL 247.775870
Key No.
305
307 35499 308 310 313 34080 325 29443 327 35392 Starter Plug 417 650760 341 342
Part
No.
35554 37079 Fill Tube Clip 380 640025B
36902
36644 651010 Screw, 1/4-20 x 7/8" 900
Description Key
No.
Oil Fill Tube “0"-Ring 370B 35703
Dipstick Spacer 400 36720 Wire Clip 416 36085
Fuel Tank Bracket
370A 36261
390
900
Part
No.
590736

Carburetor

Key No.
1 631615 Throttle Shift & Lever Assembly 2 631767 4 5 631183
17
6 7 650506 16 632164
17 651025 Throttle Crack Screw/ldle Speed
18 630766 20 20A 640053 25 27 631024 Float Shaft 28 632019 29 30 31
35
36 640019
37 632547
40
44 27110
47 630748
48
Description
Lubrication Decal Speed Control Decal Carburetor {Incl. 184) Rewind Starter Gasket Set Spark Arrester Kit (Incl. 417)(Optional) Screw, 8-32 x 3/8" Replacement Engine — none Replacement S/B 754299A Order Form 71-999
Part
No.
640025B
631184 Dust Seal Washer 631036 Throttle Shutter
640018 631867 Float Bowl
631028 631021 Inlet Needle, Seat & Clip (incl. 31) 631022 Spring Clip 36045A
640015 High Speed Bowl Nut
631027
Description
Carburetor (Incl. 184 of Engine Parts List)
Throttle Return Spring Dust Seal (Throttle) Shutter Screw
Fuel Fitting Screw
Tension Spring
Idle Restrictor Screw Idle Restrictor Screw Cap
Float Float Bowl “0”-Ring
Primer Bulb/Retainer Ring Main Nozzle Tube “0"-Ring, Main Nozzle Tube
Bowl Nut Washer Welch Plug, Idle Mixture Well Welch Plug, Atmospheric Vent
23
Page 24
SEARS CRAFTSMAN 6.5 H.P. ENGINE MODEL 143.986501 FOR
CHIPPER-SHREDDER MODEL 247.775870

Recoil Starter

Key No.
1 590599A Spring Pin (Incl. 4) 2 3 4 590601 5 590697 Brake Spring 6 590698 Starter Dog 7 8 590700 Pulley & Rewind Spring Ass’y
11 590705
12 590535 Starter Rope (98” x 9/64” Dia.)
13 590701
Part
No.
590736
590600 Washer 590696 Retainer
590699
Description
Rewind Starter
Washer
Dog Spring Starter Housing Ass’y Starter Handle
Key No.
1 2 590600 3 590679 4 5 590678 Brake Spring 6 590680 7 8 590681 Pulley & Rewind Spring Ass'y
11
12 590535
13 590701
Part
No.
590748
590599A
590601
590412 590747
Description
Rewind Starter Spring Pin (Incl. 4) Washer Retainer Washer
Starter Dog Dog Spring
Starter Housing Ass’y Starter Rope (98” x 9/64" Dia.) Starter Handle
24
Page 25
For the repair or replacement parts you need
delivered directly to your home
Call 7 am - 7 pm, 7 days a week
1 -800-366-PART
(1-800-366-7278)
For in-home major brand repair service
Call 24 hours a day, 7 days a week
1-800-4-REPAIR
(1-800-473-7247)
For the location of a
Sears Parts and Repair Center in your area
Cali 24 hours a day, 7 days a week
1-800-488-1222
For information on purchasing a Sears
Maintenance Agreement or to inquire
about an existing Agreement
call 9 am - 5 pm, Monday-Saturday
1-800-827-6655
REPAIR SERVICES
America's Repair Specfa«sfs
Loading...