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SECTION10: TROUBLE-SHOOTINGGUIDE
Problem PossibleCause
Engine fails to start 1. Blade control handle disengaged 1.
2. Spark plug wire disconnected 2.
3. Fuel tank empty, or stale fuel 3.
4. Blocked fuel line 4.
5. Faulty spark plug 5.
6. Engine flooded 6.
Engine runs erratic 1. Spark plug wire loose 1.
2. Blocked fuel line or stale fuel 2.
3. Vent ingas cap plugged
4. Water or dirt in fuel system
5. Dirty air cleaner
3.
4.
5.
CorrectiveAction
Engage blade control handle
Connect wire to spark plug
Fill up tank with fresh gasoline
Clean fuel line
Clean, adjust gap, or replace
Wait a few minutes and start again.
Connect and tighten spark plug wire.
Clean fuel line, fill tank with clean,
fresh gasoline.
Clear vent.
Drain fuel tank. Refill with fresh fuel.
Clean air cleaner. Refer to engine
manual.
Fill crankcase with proper oil.
Clean lawn mower engine.
Adjust gap to.030 inches.
Engine overheats 1. Engine oil level low 1.
2. Air flow restricted 2.
Occasional skip 1. Spark plug gap too close 1.
(hesitates) at high
speed
Idles poorly 1. Spark plug fouled, faulty, or gap too 1. Reset gap to.030 inches or replace
wide spark plug.
2. Dirty air cleaner 2. Clean air cleaner.
Excessive vibration 1. Cutting blade loose or unbalanced 1. Tighten blade and adapter, balance
blade.
2. Bent cutting blade 2. Replace blade.
3. Bent engine crankshaft 3. Contact your nearest service center
Mower will not 1. Engine speed too low 1. Move throttle lever (if so equipped) to
mulch grass FAST position.
2. Wet grass 2. Wait until grass is dry to cut.
3. Excessively high grass 3. Mow once at a high cutting height,
then mow again at desired height.
4. Dull blade 4. Sharpen or replace blade.
Uneven cut 1. Wheels not in same height position 1. Reposition all wheels at same height.
2. Dull blade 2. Sharpen or replace blade.
NOTE: For repairs beyond the minor adjustments listed above, contact your nearest authorized service dealer.
17
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