Trouble-Shooting Guide - White LC-436 Operator's Manual

SECTION 12: TROUBLE-SHOOTING GUIDE
PROBLEM
Engine fails to start
Engine runs erratic
Engine overheats
Occasional skip
(hesitates) at high
speed
Idles poorly
Excessive vibration
Mower will not
mulch grass
Uneven cut 1. Wheels not in same height position
POSSIBLE CAUSE
1. Blade control handle disengaged
2. Spark plug wire disconnected
3. Throttle control lever not in starting position
4. Fuel tank empty, or stale fuel
5. Blocked fuel line
6. Faulty spark plug
7. Engine flooded
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
1. Engine oil level low
2. Air flow restricted
1. Spark plug gap too close
1. Spark plug fouled, faulty, or gap too wide
2. Dirty air cleaner
1. Cutting blade loose or unbalanced
2. Bent cutting blade
3. Bent engine crankshaft
1. Engine speed too low
2. Wet grass
3. Excessively high grass
4. Dull blade
2. Dull blade
For repairs beyond the minor adjustments listed above,
please contact your nearest White Outdoor dealer.
CORRECTIVE ACTION
1. Engage blade control handle.
2. Connect wire to spark plug.
3. Move throttle lever to starting position.
4. Fill tank with fresh, clean fuel.
5. Clean fuel line.
6. Clean, adjust gap or replace.
7. Crank engine with throttle in FAST
position.
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. Clean air cleaner. Refer to engine
manual.
1. Fill crankcase with proper oil.
2. Clean lawn mower engine.
1. Adjust gap to.030 inches.
1. Reset gap to .030 inches or replace
spark plug.
2. Clean air cleaner .
1. Tighten blade and adapter, balance
blade.
2. Replace blade.
3. Contact your nearest White dealer
1. Move throttle lever to FAST position.
2. Wait until later to cut.
3. Mow once at a high cutting height, then
mow again at desired height. Make a
narrower cutting swath (1/2) width. Do
not cut off more than 1/3 of the total
length.
4. Sharpen or replace blade.
1. Place all four wheels in same relative
height position.
2. Sharpen or replace blade.
16