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Troubleshooting
7
12
Problem Cause Remedy
Engine fails to start 1. Blade control disengaged (Lawn mower only).
2. Spark plug boot disconnected.
3. Fuel tank empty or stale fuel.
4. Fuel shut-off valve closed (if equipped).
5. Engine not primed (if equipped with primer).
6. Faulty spark plug.
7. Reduced fuel flow/blocked fuel filter.
8. Engine flooded.
9. Engine not choked (if equipped with choke).
1. Engage blade control.
2. Connect wire to spark boot.
3. Fill tank with clean, fresh gasoline.
4. Turn on fuel shut-off valve.
5. Prime engine as instructed in the Operation
section.
6. Clean, adjust gap, or replace.
7. Replace fuel filter as instructed in the Maintenance
section.
8. Wait a few minutes to restart, but do not
prime.
9. Choke engine. See Operation section.
Engine fails to start with electric
starter
(Electric Start Units Only)
1. Electric starter push key not fully inserted.
2. Battery not charged.
3. Circuit breaker tripped.
1. Insert electric starter push key into starter housing
until it snaps into place.
2. Charge battery. See Service section of equipment
Operator’s Manual.
3. Debris may be blocking blade operation. Stop
engine, remove electric starter push key, and
disconnect spark plug boot. Verify grass or other
debris are not obstructing the blade. Carefully
clean out debris if necessary. Reattach spark plug
boot and reinsert electric starter push key. Wait
one minute after tripping for circuit breaker to
automatically self-reset then reattempt start.
Engine runs erratic 1. Spark plug boot loose.
2. Reduced fuel flow/blocked fuel filter.
3. Vent in gas cap plugged (if equipped).
4. Water or dirt in fuel system.
5. Dirty air cleaner.
6. Unit running with CHOKE (if equipped) applied.
1. Connect and tighten spark plug boot.
2. Replace fuel filter as instructed in the Maintenance
section.
3. Clear vent.
4. Drain fuel tank. Refill with fresh fuel.
5. Refer to Maintenance section.
6. Push CHOKE knob in.
Engine overheats 1. Engine oil level low.
2. Air flow restricted.
1. Fill crankcase with proper oil.
2. Clean area around and on top of engine.
Occasional skips (hesitates) at
high speed
1. Spark plug gap too close. 1. Adjust gap to .030”.
Idles poorly 2. Spark plug fouled, faulty, or gap too wide.
3. Dirty air cleaner.
1. Reset gap to .030” or replace spark plug.
2. Refer to Maintenance section.
Engine stalls with full tank 1. Carbon canister vent line(s) pinched/kinked (if
equipped with carbon canister).
1. Refer to Carbon Canister Filter Service section on
page 13 to remove engine shroud and relieve
pinched/kinked vent line(s). Re-install engine
shroud making sure vent line(s) are not pinched
or kinked.
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