Troubleshooting - Yard Machines 430 Series Operator's Manual

SECTION 9: TROUBLE SHOOTING GUIDE
Trouble
Engine fails to
start
Possible Cause(s)
1.
2.
3.
4.
5.
6,
7.
8.
9.
Engine runs 1.
erratic 2.
3.
4.
Engine 1.
overheats 2.
3.
4.
Occasional skip 1.
(hesitates) at 2.
high speed
Idles poorly 1.
2.
Excessive 1.
vibration
2.
Mower will not 1.
mulch grass
2.
3.
Uneven cut 1.
2.
Blade control handle disengaged.
Spark plug wire disconnected.
Dirty aircleaner.
Primer button not depressed.
Throttle control lever not in correct
starting position (if so equipped).
Fuel tank empty or stale fuel.
Blocked fuel line.
Faulty spark plug.
Engine flooded.
Unit running in START position.
Spark plug wire loose.
Blocked fuel line or stale fuel.
Carburetor out of adjustment.
Engine oil level low.
Dirty aircleaner.
Air flow restricted.
Carburetor not adjusted properly.
Spark plug gap too close.
Carburetor idle mixture
adjustment improperly set.
Spark plug fouled, faulty or gap
too wide.
Carburetor not adjusted.
Cutting blade loose or
unbalanced.
Bent cutting blade.
Engine speed too low (not
applicable in mowers with fixed
throttle)
Wet grass.
Excessively high grass.
Corrective Actions
1. Engage blade control handle.
2. Connect wire to spark plug.
3. Refer to the engine manual packed with your unit.
4. Refer to the engine manual packed with your unit.
5. Move throttle lever to FAST or START position.
6. Clean fuel line.
7. Clean, adjust gap or replace.
8. Refer tothe engine manual.
9. Wait for a while and crank the engine.
1. Move throttle lever to FAST position.
2. Connect and tighten spark plug wire. Check spark plug
for fouling.
3. Clean fuel line; fill tank with clean, fresh gasoline.
4. Refer to the engine manual packed with your unit.
1. Fill crankcase with proper oil.
2. Refer to the engine manual packed with your unit.
3. Stop engine and disconnect spark plug wire. Remove
blower housing and clean.
4. Refer to the engine manual..
1. Adjust gap to .030".
2. Refer to the engine manual packed with your unit.
1. Reset gap to .030" or replace spark plug.
2. Refer to the engine manual.
1. Tighten blade and adapter. Balance blade.
2. See an authorized service dealer.
1. Set throttle between 3/4 and full throttle.
2,
3.
Wheels positioned incorrectly. 1.
Dull blade. 2.
Wait until later to cut.
Mow once at a high cutting height, then mow again at
desired height ..
Place all four wheels in same height position.
Sharpen or replace blade.
NOTE: For repairs beyond the minor adjustments above, contact your local authorized service dealer.
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