Troubleshooting - Sears CRAFTSMAN 247.770990 Manual Del Operador

For Parts Call 606-678-9623 or 606-561-4983 For Parts Call 606-678-9623 or 606-561-4983
Problem
Engine fails to start
Engine runs erratic
Engine overheats
Occasional skips
(hesitates) at
high speed
Excessive Vibration
Unit does not dis-
charge
Rate of discharge
slows considerably
or composition of
discharged material
changes
Unit fails to propel itself
or slips when drive
control is engaged
NOTE: For repairs beyond the minor adjustments listed above, please contact your local Sears Parts & Repair Center.

TROUBLESHOOTING

Cause
1. Throttle lever not in correct starting position.
2. Spark plug wire disconnected.
3. Choke not in ON position.
4. Fuel tank empty or stale fuel.
5. Cannot pull recoil cord.
6. Faulty spark plug.
7. Safety switch not depressed.
8. 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. Low engine RPM.
5. Water or dirt in fuel system.
6. Dirty air cleaner.
7. Carburetor out of adjustment.
1. Engine oil level low.
2. Dirty air cleaner.
3. Carburetor not adjusted properly.
1. Spark plug gap too close.
2. Carburetor idle mixture adjustment improperly
set.
1. Loose parts or damaged impeller.
1. Discharge area clogged.
2. Foreign object lodged in impeller.
3. Low engine RPM.
4. Vacuum bag is full.
1. Low engine RPM.
2. Chipper blade dull.
1. Drive control cable out of adjustment.
2. Drive belt worn or damaged.
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1. Move throttle lever to FAST or START position.
2. Connect wire to spark plug.
3. Move CHOKE to ON position.
4. Fill tank with clean, fresh gasoline.
5. Obstruction lodged in impeller. Disconnect
spark plug wire and remove lodged object.
6. Clean, adjust gap, or replace.
7. Safety switch must be depressed by the front
tab on the bag handle when securing the bag.
8. Connect safety switch wire to engine connec-
tor 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.
4. Always run engine at full throttle.
5. Drain fuel tank. Refill with
fresh fuel.
6. Clean or replace air cleaner.
7. Contact your Sears Parts & Repair Center.
1. Fill crankcase with proper selection of oil.
2. Clean or replace air cleaner.
3. Contact your Sears Parts & Repair Center.
1. Adjust gap to .030".
2. Contact your Sears Parts & Repair Center.
1. Stop engine immediately and disconnect
spark plug wire. Contact your Sears Parts &
Repair Center.
1. Stop engine immediately and disconnect
spark plug wire. Clean flail screen and inside
of discharge opening.
2. Stop engine 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 contact your Sears
Parts & Repair Center.
1. Follow adjustment procedure in Service and
Adjustments section of manual.
2. Contact your Sears Parts & Repair Center.
1
Remedy