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Problem
Possible Cause(s)
Corrective Action
Engine fails to start
1.
Fuel tank empty or stale fuel.
1.
Loss of power;
operation
erratic
2.
Spark plug wire disconnected.
3.
Cannot pull recoil cord.
Engine overheats
Unit does not
discharge
4.
Choke not in ON position.
5.
Faulty spark plug.
6.
Safety switch not depressed.
7.
Safety switch wire is not
connected to engine or not
properly grounded.
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.
Low engine RPM.
1.
Loose parts or damaged
impeller.
Too much vibration
1.
Carburetor
not adjusted
1.
2.
Engine oil level low
2.
1.
Discharge
chute clogged.
1.
Rate of discharge
slows considerably
or
composition
of
discharged
material
changes
2.
Foreign object lodged in
impeller.
3.
Low engineRPM.
4.
Vacuum bag is full.
1.
Low engineRPM.
2.
Chipper blade dull.
Fill tank with clean, fresh gasoline. Fuel will not
last over thirty days unless a fuel stabilizer is
added.
2.
Connect wire to spark plug.
3.
Obstruction lodged in impeller. Disconnect
spark plug wire and remove lodged object.
4.
Move CHOKE to ON position.
5.
Clean, adjust gap or replace.
6.
Safety switch must be depressed by the front
tab on the bag handle when securing the bag.
7.
Connect safety switch wire to engine connector
and ground to mounting bracket.
1.
Connect and tighten spark plug wire.
2.
Move choke lever to OFF position.
3.
Clean fuel line; fill tank with clean fresh
gasoline. Fuel will not last over thirty days
unless a fuel stabilizer is used.
4.
Disconnect fuel line at carburetor to drain fuel
tank. Refill with fresh fuel.
5.
Contact your Sears Service Center.
6.
Always run engine at full throttle.
1.
Stop engine immediately and disconnect spark
plug wire. Have unit serviced by a Sears
Service Center.
Contact your Sears Service Center.
Fill crankcase with proper selection of oil.
Stop engine immediately and disconnect spark
plug wire. Clean flail screen and inside of
discharge opening. See Maintenance section of
this manual.
2.
Stop engine immediately and disconnect spark
plug wire. Remove lodged object.
3.
Always run engine at full throttle.
4.
Empty bag.
1.
Always run engine at full throttle.
2.
Replace chipper blade or see your Sears
Service Center.
NOTE: For repairs beyond
the minor adjustments
listed above, please
contact your local Sears Service Center.
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