9
Trouble
Shooting
Problem
Cause
PTO engaged.
Remedy
1.
1. Place(OFF)PTOposition.knob (or lever) in disengaged
Engine fails to
start
2.
3.
4.
Spark plug wire(s) disconnected.
Fuel tank empty or stale fuel.
Choke not activated.
2. Connect wire(s) to spark plug(s).
3. Fill tank with clean, fresh gasoline.
4. Pull out the CHOKE control (if equipped)
or place the throttle control in CHOKE
position.
5.
6.
Faulty spark plug.
Blocked fuel line.
5. Clean, adjust gap, or replace.
6. Cleanequipped.fuel line or replace fuel filter, if
7. Crank engine with throttle in FAST position.
8. Engage parking brake.
7.
8.
9.
Engine flooded.
Parking brake not engaged.
Throttleposition.control lever not in correct starting 9. Place throttle lever to FAST position.
Engineerratic runs
1. Unit running with CHOKE applied.
1. Push CHOKE control (if equipped) in, or
move the throttle control out of the CHOKE
position.
For repairs beyond
the minor adjust-
ments listed here,
contact an authorized
service dealer.
2. Spark plug wire(s) loose.
2. Connect and tighten spark plug wire(s).
3
. Blocked fuel line or stale fuel.
3. Clean fuel line; fill tank with clean, fresh
(less than 30 days old) gasoline. Replace
fuel filter, if so equipped.
4. Clear vent or replace if damaged.
5. Drain fuel tank. Refill with fresh fuel.
6. cleanReplacepre-cleaner,air cleanerifcartridge/elementso equipped. or
4. Vent in gas cap plugged.
5. Water or dirt in fuel system.
6. Dirty air cleaner.
1
. Engine oil level low.
1. Fill crankcase with proper oil.
Engine overheats
2
. Air flow restricted.
2. Clean grass clippings and debris from
around the engine’s cooling fins and blower
housing.
Engine hesitates 1. Spark plug(s) gap too close.
at high RPM
1. Remove spark plug(s) and reset the gap.
Idles poorly
1. Swide.park plug(s) fouled, faulty, or gap too
1. Replace spark plug(s). Set plug(s) gap.
2. cleanReplacepre-cleaner,air cleanerifcartridge/elementso equipped. or
1. Tighten blade and spindle. Balance blade.
2. Replace blade.
1. Place throttle in FAST (rabbit) position.
2. laterDo notto mowcut. when grass is wet; wait until
2
. Dirty air cleaner.
Excessive
Vibration
Mower will not
mulch grass (If
Equipped)
1. Cutting blade loose or unbalanced.
Damaged or bent cutting blade.
2.
1. Engine speed too low.
2
. Wet grass.
3
. Excessively high grass.
3. Mow once at a high cutting height, then
mow again at desired height or make a
narrower cutting path.
4
. Dull blade.
4. Sharpen or replace blade.
Uneven cut
1. Deck not balanced properly.
1. Perform side-to-side deck adjustment.
2. Sharpen or replace blade.
2
3
. Dull blade.
. Uneven tire pressure.
3. Check tire pressure in all four tires.
30
| Categories | Lawn Mower Manual, MTD Lawn Mower Manuals, Yard Man Lawn Mower Manuals |
|---|---|
| Tags | MTD 604, Yard Man 604 |
| 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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