Troy-Bilt 440 - Manual (Page 14)

14
For repairs beyond
the minor adjust-
ments listed here,
contact an authorized
service dealer.
6
Trouble
Shooting
Cause Problem Remedy
Engine fails to start 1. Blade control disengaged.
2. Spark plug wire disconnected.
3. Fuel tank empty or stale fuel.
4. Engine not primed (if equipped).
5. Faulty spark plug.
6. Blocked fuel line.
7. Engine flooded.
8. Burnt fuse. (Electric Start Only)
1. Engage blade control.
2. Connect wire to spark plug.
3. Fill tank with clean, fresh gasoline.
4. Prime engine as instructed in
“Operating Your Lawn Mower”.
5. Clean, adjust gap, or replace.
6. Clean fuel line.
7. Wait a few minutes to restart, but
do not prime.
8. Replace fuse (see Maintenance
section)
Engine runs erratic 1. Connect and tighten spark
plug wire.
2. Clean fuel line; fill tank with clean,
fresh gasoline.
3. Clear vent.
4. Drain fuel tank. Refill with
fresh fuel.
5. Refer to engine manual.
6. Refer to engine manual.
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. Fill crankcase with proper oil.
2. Remove blower housing
and clean.
3. Refer to engine manual.
1. Engine oil level low.
2. Air flow restricted.
3. Carburetor not adjusted properly.
Occasional skips
(hesitates) at
high speed
1. Adjust gap to .030”.
2. Refer to engine manual. 1. Spark plug gap too close.
2. Carburetor idle mixture adjustment
improperly set.
Idles poorly 1. Reset gap to .030” or replace
spark plug.
2. Refer to engine manual.
3. Refer to engine manual.
1. Spark plug fouled, faulty or gap
too wide.
2. Carburetor improperly adjusted.
3. Dirty air cleaner.
Mower will not
mulch grass
1. Do not mow when grass is wet; wait
until later to cut.
2. Mow once at a high cutting height,
then mow again at desired height or
make a narrower cutting path.
3. Sharpen or replace blade.
1. Wet grass.
2. Excessively high grass.
3. Dull blade.
Uneven cut
1. Sharpen or replace blade. 1. Dull blade.
Excessive
Vibration
1. Cutting blade loose or unbalanced.
2. Bent cutting blade.
1. Tighten blade and adapter.
Balance blade.
2. See an authorized service dealer.
Mower will not
self propel
1. Check belt for proper pulley instal-
lation and movement.
2. Stop engine, disconnect spark plug
wire, and clean out debris.
3. Inspect and replace belt.
1. Belt not installed properly
2. Debris clogging drive operation.
3. Damaged or worn belt.