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TROUBLESHOOTING
Problem Cause Remedy
Engine fails to start Throttle lever not in correct starting position1.
Choke not in ON position2.
Spark plug wire disconnected3.
Faulty spark plug4.
Fuel tank empty or stale fuel5.
Cannot pull recoil cord 6.
Safety switch not depressed7.
Safety switch wire is not connected to 8.
engine or not properly grounded
Move throttle lever to START/RUN position.1.
Move CHOKE to ON position.2.
Connect wire to spark plug.3.
Clean, adjust gap, or replace.4.
Fill tank with clean, fresh gasoline.5.
Obstruction lodged in impeller. Disconnect spark 6.
plug wire and remove lodged object.
Safety switch must be depressed by the front tab on 7.
the bag handle when securing the bag.
Connect safety switch wire to engine connector and 8.
ground to mounting bracket.
Engine runs erratically Unit running on CHOKE1.
Spark plug wire loose2.
Stale fuel3.
Water or dirt in fuel system4.
Dirty air cleaner5.
Low engine RPM6.
Carburetor out of adjustment7.
Move choke lever to OFF position.1.
Connect and tighten spark plug wire.2.
Fill tank with fresh gasoline.3.
Drain fuel. Refill with fresh fuel.4.
Clean or replace air cleaner filter.5.
Always run engine at full throttle.6.
Contact your Sears Parts & Repair Center.7.
Engine overheats Engine oil level low1.
Air flow restricted2.
Fill engine with proper amount and type of oil.1.
Clean grass clippings and debris from around the 2.
engine’s cooling fins and blower housing.
Engine hesitates at high RPMs Spark plug gap set too close1. Remove spark plug and adjust gap.1.
Engine idles poorly Fouled spark plug1.
Dirty air cleaner2.
Replace spark plug and adjust gap.1.
Replace air cleaner cartridge.2.
Excessive vibration Loose parts or damaged impeller1. Stop engine immediately and disconnect spark plug 1.
wire. Contact your Sears Parts & Repair Center.
Unit does not discharge Discharge area clogged1.
2. Foreign object lodged in impeller
3. Low engine RPM
4. Vacuum bag is full
1. Stop engine immediately and disconnect spark plug
wire. Clean flail screen and inside of discharge open-
ing.
2. Stop engine and disconnect spark plug wire. Remove
lodged object.
3. Always run engine at full throttle.
4. Empty bag.
Rate of discharge slows
considerably or composition of
discharged material changes
Low engine RPM1.
Chipper blade dull2.
1. Always run engine at full throttle.
2. Replace chipper blade or contact your Sears Parts &
Repair Center.
Unit fails to propel itself or
slips when drive control is
engaged
Drive control cable out of adjustment 1.
Drive belt worn or damaged2.
Follow adjustment procedure in Service & Mainte-1.
nance section.
Contact your Sears Parts & Repair Center.2.
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