Troubleshooting - Troy-Bilt 494 Operator's Manual

SECTION 6: TROUBLESHOOTING
Problem
Engine fails to start
Engine runs erratic
Too much vibration
Engine overheats
Occasional skip (hesitates)
at high speed
Unit does not discharge
Rate of discharge slows
considerably or
composition of discharged
material changes.
NOTE: For repairs beyond the minor adjustments listed above, contact your nearest authorized service dealer.
Cause
1. Spark plug wire disconnected.
2. Fuel tank empty or stale fuel.
3. Throttle control lever not in correct
starting position. (If Equipped)
4. Choke not in CHOKE position.
(If equipped)
5. Engine not primed.
6. Blocked fuel line.
7. Faulty spark plug.
1. Spark plug wire loose.
2. Unit running on CHOKE.
(If equipped)
3. Blocked fuel line or stale fuel.
4. Water or dirt in fuel system.
5. Dirty air cleaner.
6. Carburetor out of adjustment.
1. Loose parts or damaged impeller.
1. Engine oil level low.
2. Dirty air cleaner.
3. Carburetor not adjusted properly.
1. Spark plug gap too close.
1. Discharge chute clogged.
2. Foreign object lodged in impeller.
3. Low engine RPM.
1. Low engine RPM.
2. Chipper blade dull.
1. Connect wire to spark plug.
2. Fill tank with clean, fresh gasoline.
3. Move throttle lever to FAST position.
4. Move choke to CHOKE position.
5. Prime engine.
6. Clean fuel line.
7. Clean, adjust gap, or replace.
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. Drain fuel tank. Refill with fresh fuel.
5. Clean or replace air cleaner.
6. See authorized service dealer.
1. See authorized service dealer.
1. Fill crankcase with proper oil.
2. Clean or replace air cleaner.
3. See authorized service dealer.
1. Adjust gap to.030".
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.
1. Always run engine at full throttle.
2. Replace chipper blade or see your
authorized service dealer.
12
Remedy