Craftsman 247.77013.0 - Manual (Page 23)

TROUBLESHOOTING
Problem Cause remedy
Engine fails to start Throttle lever not in correct starting position
Choke not in ON position
Spark plug wire disconnected
Faulty spark plug
Fuel tank empty or stale fuel
Cannot pull recoil cord
Safety switch not depressed
Safety switch wire is not connected to
engine or not properly grounded
1.
2.
3.
4.
5.
6.
7.
8.
Move throttle lever to START/RUN position.
Move CHOKE to ON position.
Connect wire to spark plug.
Clean, adjust gap, or replace.
Fill tank with clean, fresh gasoline.
Obstruction lodged in impeller. Disconnect spark
plug wire and remove lodged object.
Safety switch must be depressed by the front tab on
the bag handle when securing the bag.
Connect safety switch wire to engine connector and
ground to mounting bracket. 1.
2.
3.
4.
5.
6.
7.
8.
Engine runs erratically Unit running on CHOKE
Spark plug wire loose
Stale fuel
Water or dirt in fuel system
Dirty air cleaner
Low engine RPM
Carburetor out of adjustment 1.
2.
3.
4.
5.
6.
7. Move choke lever to OFF position.
Connect and tighten spark plug wire.
Fill tank with fresh gasoline.
Drain fuel. Refill with fresh fuel.
Clean or replace air cleaner filter.
Always run engine at full throttle.
Contact your Sears Parts & Repair Center. 1.
2.
3.
4.
5.
6.
7.
Engine overheats Engine oil level low
Air flow restricted 1.
2. Fill engine with proper amount and type of oil.
Clean grass clippings and debris from around the
engine’s cooling fins and blower housing. 1.
2.
Engine hesitates at high RPMs Spark plug gap set too close 1. Remove spark plug and adjust gap. 1.
Engine idles poorly Fouled spark plug
Dirty air cleaner 1.
2. Replace spark plug and adjust gap.
Replace air cleaner cartridge. 1.
2.
Excessive vibration Loose parts or damaged impeller 1. Stop engine immediately and disconnect spark plug
wire. Contact your Sears Parts & Repair Center. 1.
Unit does not discharge Discharge area clogged
2. Foreign object lodged in impeller
3. Low engine RPM
4. Vacuum bag is full
1. 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 RPM
Chipper blade dull 1.
2. 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
Drive belt worn or damaged
1.
2.
Follow adjustment procedure in Service & Mainte-
nance section.
Contact your Sears Parts & Repair Center. 1.
2.
This section addresses minor service issues. To locate the nearest Sears Service Center or to schedule service, simply contact Sears
at 1-800-4-MY-HOME®.
Warning
Before performing any type of maintenance/service, disengage all
controls and stop the engine. Wait until all moving parts have come to
a complete stop. Disconnect spark plug wire and ground it against the
engine to prevent unintended starting. Always wear safety glasses during
operation or while performing any adjustments or repairs.