Troubleshooting - Yard-Man 107 Operator's Manual

SECTION 9: TROUBLE SHOOTING GUIDE
Trouble
Engine fails to start 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.
Engine runs erratic 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.
6. Carburetor out of adjustment.
Engine overheats 1. Engine oil level low.
2. Air flow restricted.
3. Carburetor not adjusted properly.
Occasional skip 1. Spark plug gap too close.
(hesitates) at high
speed
Idles poorly 1. Spark plug fouled, faulty or gap too
2. Carburetor improperly adjusted.
3. Dirty air cleaner.
Excessive vibration 1. Cutting blade loose or unbalanced.
2. Bent cutting blade.
Mower will not mulch 1. Wet grass.
grass 2. Excessively high grass.
3. Dull blade.
Uneven cut 1. Wheels not positioned correctly.
2. Dull blade.
Possible Cause(s)
wide.
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 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".
1. Reset gap to.030" or replace spark plug.
2. Adjust carburetor.
3. Clean air cleaner.
1. Tighten blade and adapter. Balance blade.
2. Replace blade.
1. Wait until later to cut.
2. Mow once at a high cutting height, then mow
again at desired height or make a narrower
cutting swath (1/2 width).
3. Sharpen or replace blade.
1. Place all four wheels in same height position.
2. Sharpen or replace blade.
13
Corrective Action