Yard-Man 247.371060 Owner's Manual page 14

SECTION 13: TROUBLE SHOOTING GUIDE
Trouble
Engine fails to start 1.
2.
3.
4.
5.
6.
7.
Engine runs erratic 1.
2.
3.
4.
Engine overheats
Occasional skip
hesitates) at high
speed
Idles poorly
Excessive vibration
Mower will not mulch
grass 2.
3.
4.
Uneven cut 1.
2.
Possible Cause(s)
Blade control handle disengaged. 1.
Spark plug wire disconnected. 2.
Throttle control lever not in correct 3.
position.
Fuel tank empty, or stale fuel.
Blocked fuel line. 4.
Faulty spark plug.
Engine flooded.
.
6.
7.
Spark plug wire loose. 1.
Blocked fuel line or stale fuel. 2.
Vent in gas cap plugged. 3.
Water or dirt in fuel system. 4.
5. Dirty air cleaner. 5.
6. Carburetor out of adjustment. 6.
1. Engine oil level low. 1.
2. Air flow restricted. 2.
3. Carburetor not adjusted properly. 3.
1. Spark plug gap too close. 1.
1. Spark plug fouled, faulty or gap too 1.
wide.
2. Carburetor improperly adjusted. 2.
3. Dirty air cleaner. 3.
1. Cutting blade loose or unbalanced. 1.
2. Bent cutting blade. 2.
1. Engine speed too low. 1.
Wet grass. 2.
Excessively high grass.
3,
Dull blade.
4.
Wheels not positioned correctly. 1.
Dull blade. 2.
Corrective Action
Engage blade control handle.
Connect wire to spark plug.
Move throttle lever to FAST (rabbit)
position.
Fill tank with clean, fresh gasoline.
Clean fuel line.
Clean, adjust gap or replace.
Crank engine with throttle in SLOW (turtle)
position.
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.
Adjust carburetor.
Fill crankcase with proper oil.
Remove blower housing and clean.
Adjust carburetor.
Adjust gap to .030".
Reset gap to.030" or replace spark plug.
Adjust carburetor.
Clean air cleaner.
Tighten blade and adapter. Balance blade.
Replace blade.
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).
Sharpen or replace blade.
Place all four wheels in same height
position.
Sharpen or replace blade.
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