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Engine
• Clean engine and remove any grass clippings, dirt,
and debris from the cooling fins, air intake screen,
levers, linkage and the exterior of the engine.
• Follow recommendations in the accompanying
engine manual for off-season storage of the
engine.
• Change oil as stated in the engine manual.
SECTION10: TROUBLE-SHOOTINGGUIDE
PROBLEM
Engine fails to start
Engine runs erratic
POSSIBLE CAUSE
1. Blade control handle disengaged
2. Spark plug wire disconnected
3.Throttle control lever (if so equipped) not in
starting position
4. Fuel tank empty, or stale fuel
5. Blocked fuel line
6. Faulty spark plug
7. Engine flooded
1. Spark plug wire loose
2. Blocked fuel line or stale fuel
3. Vent in gas cap plugged
4. Water or dirt in fuel system
5. Dirty air cleaner
CORRECTIVE ACTION
1.Engage blade control handle
2.Connect wire to spark plug
3. Move throttle lever (if so equipped) to
correct position
4. Fill up tank with fresh gasoline
5.Clean fuel line
6. Clean, adjust gap, or replace
7.Wait a few minutes and start again.
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. Refer to engine
manual.
Engine overheats 1. Engine oil level low 1. Fill crankcase with proper oil.
2. Air flow restricted 2.Clean lawn mower engine.
Occasional skip 1. Spark plug gap too close 1. Adjust gap to:030 inches,
(hesitates) at high
speed
Idles poorly 1. Spark plug fouled, faulty, or gap too wide 1. Reset gap to.030 inches or replace
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 2.Wet grass FAST position.
3.Excessively high grass 2. Wait until grass is dry to cut.
3. Mow once at a high cutting height, then
4.Dull blade mow again at desired height.
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.
Refer to separate engine manual packed with your mower for more engine related information,
NOTE: For repairs beyond the minor adjustments listed above, contact your nearest authorized service dealer,
18
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