8
Troubleshooting
Problem
Cause
Remedy
Engine fails to start
1. PTO/Blade engaged.
1. Place knob (or lever) in disengaged (OFF)
position.
2
3
. Spark plug wire disconnected.
. Fuel tank empty, or stale fuel.
2. Connect wire to spark plug.
3. Fill tank with clean, fresh (less than 30 days
old) gas.
4
5
6
7
8
9
. Choke not activated.
. Faulty spark plug.
4. Place the throttle control in CHOKE position.
5. Clean, adjust gap or replace plug.
6. Clean fuel line and replace fuel filter.
7. Crank engine with throttle in FAST position.
8. Engage parking brake.
. Blocked fuel line.
. Engine flooded.
. Parking brake not engaged
.
Throttle control lever not in correct starting
position.
9. Place throttle lever to FAST position.
Engine runs erratic
1. Unit running with CHOKE activated.
1. Move the throttle contol out of the CHOKE
position.
2
3
. Spark plug wires loose.
2. Connect and tighten spark plug wire.
. Blocked fuel line or stale fuel.
3. Clean fuel line; fill tank with clean, fresh
gasoline and replace fuel filter, is so equipped.
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 or clean
foam precleaner, is so equipped.
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.
2. Replace air cleaner element and/or clean
pre-cleaner, if so equipped.
Excessive vibration
1. Cutting blade loose or unbalanced.
. Damaged or bent cutting blade.
1. Engine speed too low.
1. Tighten blade and spindle. Balance blade.
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 |
|---|---|
| Tags | MTD 760, MTD 770 |
| Download File |
|
| Document Type | Owner's Manual |
| Language | English |
| Product Brand | MTD, Lawn Mower |
| Document File Type | |
| Publisher | mtdproducts.com |
| Wikipedia's Page | MTD Products |
| Copyright | Attribution Non-commercial |
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I need a parts manual. I need a deck idler spring for model. Series 760………… Model no.13am7725055. Serial number 1c170 b 70018