8
Troubleshooting
Problem
Cause
Remedy
Engine fails to start
1. PTO/Blade Engage knob engaged.
1. Place knob in disengaged (OFF) position.
2
3
4
. Parking brake not engaged.
. Spark plug wire disconnected.
2. Engage parking brake.
3. Connect wire to spark plug.
. Throttle control lever not in correct starting
position.
4. Place throttle lever to FAST position.
5
6
. Choke not activated
5. Put throttle lever up into the CHOKE position.
. Fuel tank empty, or stale fuel.
6. Fill tank with clean, fresh (less than 30 days
old) gas.
7
8
9
. Blocked fuel line.
. Faulty spark plug.
. Engine flooded.
7. Clean fuel line and replace fuel filter.
8. Clean, adjust gap or replace plug.
9. Crank engine with throttle in FAST position.
1. Deactivate the CHOKE.
Engine runs erratic
1. Unit running with CHOKE activated.
2
3
. Spark plug wires loose.
2. Connect and tighten spark plug wires.
. Blocked fuel line or stale fuel.
3. Clean fuel line; fill tank with clean, fresh
gasoline and replace fuel filter.
4
5
. Vent in gas cap plugged.
4. Clear vent or replace cap if damaged.
. Water or dirt in fuel system.
5. Drain fuel tank. Refill with clean, fresh
gasoline.
6
. Dirty air cleaner.
6. Replace air cleaner paper element.
Engine overheats
1. Engine oil level low.
1. Fill crankcase with proper amount and
weight of oil.
2
. Air flow restricted.
2. Clean grass clippings and debris from around
the engine’s cooling fins and blower housing.
Engine hesitates at high
RPM
1. Spark plug gap too close.
1. Remove spark plug and reset the gap.
Engine Idles rough
1. Spark plug fouled, faulty or gap too wide.
1. Replace spark plug. Set plug gap.
2
. Dirty air cleaner.
1. Cutting blade loose or unbalanced.
. Damaged or bent cutting blade.
1. Engine speed too low.
2. Replace air cleaner element.
1. Tighten blade and spindle.
Excessive vibration
2
2. Replace blade.
Mower will not mulch grass
1. Place throttle in FAST (rabbit) position.
2
3
. Wet grass.
2. Do not mulch when grass is wet.
. Excessively high grass.
3. Mow once at a high cutting height, then
mow again at desired height or make a
narrower cutting swath.
4
. Dull blade.
4. Sharpen or replace blade.
Uneven cut
1. Deck not leveled properly.
1. Perform side-to-side deck adjustment.
2
3
. Dull blade.
2. Sharpen or replace blade.
. Uneven tire pressure.
3. Check tire pressure in all four tires.
| Categories | Lawn Mower Manual, MTD Lawn Mower Manuals, Troy-Bilt Lawn Mower Manuals |
|---|---|
| Download File |
|
| Document Type | Owner's Manual |
| Language | English |
| Product Brand | MTD, Lawn Mower |
| Product Type | Walk Behind Mower |
| Document File Type | |
| Publisher | mtdproducts.com |
| Wikipedia's Page | MTD Products |
| Copyright | Attribution Non-commercial |
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