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SECTION 10: TROUBLESHOOTING
Problem
Cause
Engine fails to start
Engine runs erratic
1.
Blade control handle disengaged.
2.
Spark plug wire disconnected.
3.
Fuel tank empty or stale fuel.
4.
Blocked fuel line.
5.
Faulty spark plug.
6.
Engine flooded
1.
Spark plug wire loose.
2.
Blocked fuel line or stale fuel.
3.
Vent in gas plugged.
4.
Water or dirt in fuel system.
5.
Dirty air cleaner.
6.
Carburetor out of adjustment.
1.
Engine oil level low.
2.
Air flow restricted.
3.
Carburetor not adjusted properly.
1.
Spark plug gap too close.
Remedy
1.
Engage blade control handle.
2.
Connect wire to spark plug.
3.
Fill tank with clean, fresh gasoline.
4.
Clean fuel line.
5.
Clean, adjust gap, or replace.
6.
Wait a few minutes to restart, do not
prime.
1.
Connect and tighten spark plug wire.
2.
Clean fuel line; fill tank with clean, fresh
gasoline
3.
Clear vent.
4.
Drain fuel tank. Refill with fresh fuel.
5.
Clean air cleaner.
6.
Adjust carburetor.
1.
Fill crankcase with proper oil.
2.
Remove blower housing and clean.
3.
Adjust carburetor.
1.
Adjust gap to .030".
Engine overheats
Occasional skip (hesitates
at high speed
Idles poorly
1.
Spark plug fouled, faulty or gap too
1.
Reset gap to .030" or replace spark
wide.
plug.
2.
Carburetor improperly adjusted.
2.
Adjust carburetor.
3.
Dirtyaircleaner.
3.
Clean air cleaner.
Excessive vibration
1.
Cutting blade loose or unbalanced.
1.
Tighten blade and adapter. Balance
2.
Bent cutting blade,
blade.
2.
Replace blade.
Mower wilt not mulch gras,_ 1.
Wet grass.
1.
Do not mow when grass is wet; wait
until later to cut.
2.
Excessively high grass.
2.
Mow once at a high cutting height, then
mow again at desired height or make a
narrower cutting path.
3.
Dull blade.
3.
Sharpen or replace blade.
Uneven cut
1.
Wheels not positioned correctly.
1.
Place all four wheels in same height
position.
2.
Dull blade.
2.
Sharpen or replace blade.
17
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