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SECTION 14: TROUBLE SHOOTING GUIDE
Corrective Actions
Trouble
Engine fails to
start
Engine runs
erratic
Engine
overheats
iOccasional skip
(hesitates) at
high speed
Idles poorly
Excessive
vibration
Mower will not
imulch grass
Possible Cause(s)
Blade control handle disengaged.
Spark plug wire disconnected.
Dirty airoleaner.
Primer button not depressed.
Throttle control lever not in correct
starting position (if so equipped).
Fuel tank empty or stale fuel.
Blocked fuel line (if so equipped),
Faulty spark plug.
Engine flooded.
Unit running in START position.
Spark plug wire loose,
Blocked fuel Iine (if so equipped) or
stale fuel.
Vent in gas cap plugged.
Water or dirt in fuel system.
Dirty air cleaner.
Carburetor out of adjustment.
Engine oil level low.
Dirty aircleaner.
Air flow restricted.
Carburetor not adjusted properly.
Spark plug gap too close.
Carburetor idle mixture adjustment
improperly set.
Spark plug fouled, faulty or gap too
wide.
Carburetor improperly adjusted.
Dirty air cleaner,
Cutting blade loose or unbalanced.
Bent cutting blade.
Engine speed too low,
Wet grass,
Excessively high grass.
Uneven cut Wheels not positioned correctly.
Dull blade.
Wheels will not Drive belt not installed properly,
)ropel Debris clogging belt mechanism.
Engage blade control handle,
Connect wire to spark plug.
Refer to the engine manual packed with your unit,
Refer to the engine manual packed with your unit_
Move throttle lever to FAST or START position.
Fill tank with clean fresh gasoline. Fuel will not last over thirty
days unless a fuel stabilizer is used.
Clean fuel line.
Clean, adjust gap or replace.
Refer to the engine manual packed with your unit.
Move throttle lever to FAST position,
Connect and tighten spark plug wire. Check spark plug for
fouling,
Clean fuel line; fill tank with clean, fresh gasoline. Fuel will
not last over thirty days unless a fuel stabilizer is added,
Clear vent or threads or replace.
Drain fuel tank, Refill with fresh fuel.
Refer to the engine manual packed with your unit.
Refer to the engine manual packed with your unit.
Fill crankcase with proper oil.
Refer to the engine manual packed with your unit.
Stop engine and disconnect spark plug wire, Remove blower
housing and clean,
Refer to the engine manual packed with your unit or see an
authorized service dealer.
Adjust gap to .030".
Refer to the engine manual packed with your unit,
Reset gap to .030" or replace spark plug.
Refer to the engine manual packed with your unit.
Refer to the engine manual packed with your unit.
Tighten blade and adapter. Balance blade.
See an authorized service dealer.
Set throttle between 3/4. and full throttle.
Do not mow when grass is wet; wait until later to cut.
Mow once at a high cutting height, then mow again at
desired height or make a narrower cutting swath (1/2 width).
Place all four wheels in same height position.
Sharpen or replace blade,
Check belt and reinstalll pulley if necessary,
Clean the area around the belt by scraping with a hard
brush.
Note: For repairs beyond the minor adjustments listed above, contact your local authorized service dealer.
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