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Troubleshooting
Problem
The engine does not start.
The engine runs poorly.
The engine overheats.
The engine does not shut off.
Mowing performance is poor.
The mower vibrates.
The mower head does not retain line.
Possible Cause
1. The spark-plug wire is loose or
disconnected.
2. The spark plug is wet, pitted, fouled, or
the gap is incorrect.
3. The fuel tank is empty.
4. The air filter is dirty.
5. There is dirt in fuel filter.
6. The carburetor or fuel line is dirty.
7. The carburetor is out of adjustment.
8. The engine switch is in the O
posiiton.
9. Dirt, water, or stale fuel is in fuel
system.
10. The engine switch or wire is defective.
1. The spark plug is faulty.
2. The air filter is dirty.
3. The carburetor is out of adjustment.
4. Dirt, water, or stale fuel is in fuel
system.
5. The engine cooling system is clogged.
1. The engine cooling system is clogged.
2. The carburetor is out of adjustment.
3. The engine-oil level is low.
1. The engine on/off switch is damaged.
2. The wire disconnected from the engine
on/off switch.
1. The mower line length is too short.
1. The capscrews for the mower head
are loose.
2. The mower line lengths are
substantially different.
3. A nut or bolt is loose.
4. The mower head is broken.
1. The mower line is not properly
attached.
2. The line retainer is broken.
3. The mower line is not the correct size.
21
Corrective Action
1. Install the wire on the spark plug.
2. Install a new, correctly gapped spark
plug.
3. Fill the fuel tank.
4. Replace the air filter.
5. Replace the fuel filter.
6. Clean the carburetor or fuel line.
7. Contact an Authorized Service Dealer
8. Move the switch to the O
FF
9. Contact an Authorized Service Dealer.
10. Inspect and replace damaged parts.
1. Replace the spark plug.
2. Replace the air filter.
3. Contact an Authorized Service Dealer
4. Contact an Authorized Service Dealer.
5. Clean the debris screen and engine
cooling fans.
1. Clean the debris screen and engine
cooling fans.
2. Contact an Authorized Service Dealer
3. Add engine oil.
1. Inspect and replace damaged parts
2. Inspect, repair, or replace damaged
parts.
1. Use the correct line length. When the
line is less than half this length, replace
it.
1. Tighten the capscrews.
2. Adjust the mower line lengths to
approximately equal lengths.
3. Check all bolts and nuts, including
engine bolts.
4. Replace broken parts.
1. Attach the mower line correctly.
2. Replace the mower head assembly.
3. Use a mower line with a 4 mm (0.155
inch) diameter.
position.
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