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Troubleshooting
Problem
Engine Fails to start
Engine Fails to start with
electric starter
(Electric Start Units Only)
Engine runs erratic
Engine overheats
Occasional skips
(hesitates) at
high speed
22
Cause
1. Blade control disengaged.
2. Spark plug boot disconnected.
3. Fuel tank empty or stale fuel.
4. Engine not primed (if equipped with primer).
5. Faulty spark plug.
6. Blocked fuel line.
7. Engine flooded.
8. Fuel valve (if equipped) closed.
9. Engine not choked (if equipped with choke).
1. Electric Start Push Key not fully inserted.
2. Battery not charged.
3. Circuit breaker tripped.
1. Spark plug boot loose.
2. Blocked fuel line or stale fuel.
3. Vent in gas cap plugged.
4. Water or dirt in fuel system.
5. Dirty air cleaner.
6. Unit running with CHOKE (if equipped)
applied.
1. Engine oil level low.
2. Air flow restricted.
1. Spark plug gap too close.
Remedy
1. Engage blade control.
2. Connect wire to spark boot.
3. Fill tank with clean, fresh gasoline.
4. Prime engine as instructed in the Operation
section.
5. Clean, adjust gap, or replace.
6. Clean fuel line.
7. Wait a few minutes to restart, but do not
prime.
8. Open fuel valve. See engine manual.
9. Choke engine. See engine manual.
1. Insert key into starter housing until it snaps
into place.
2. Charge battery.
3. Debris may be blocking blade operation.
Stop engine, remove Electric Start Key, and
disconnect spark plug boot. Verify grass or
other debris is not obstructing the blade.
Carefully clean out debris if necessary.
Reattach spark plug boot and reinsert key.
Wait one minute after tripping for circuit
breaker to automatically self-reset then
reattempt start.
1. Connect and tighten spark plug boot.
2. Clean fuel line; fill tank with clean, fresh
gasoline.
3. Clear vent.
4. Drain fuel tank. Refill with fresh fuel.
5. Refer to engine manual.
6. Push CHOKE knob in.
1. Fill crankcase with proper oil.
2. Clean area around and on top of engine.
1. Adjust gap to .030".
8
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