Cub Cadet LGT 1054 LGT 1050 Operator's Manual - Page 29

Troubleshooting - problems

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Troubleshooting 8 Problem Engine fails to start Cause 1. PTO/Blade Engage knob engaged. 2. Parking brake not engaged. 3. Spark plug wire(s) disconnected. 4. Throttle control lever not in correct starting position. 5. Choke not activated 6. Fuel tank empty, or stale fuel. Engine runs erratic 7. Blocked fuel line. 8. Faulty spark plug(s). 9. Engine flooded. 10. Fuse(s) blown. 1. Tractor running with CHOKE activated. 2. Spark plug wire(s) loose. 3. Blocked fuel line or stale fuel. 4. Vent in gas cap plugged. 5. Water or dirt in fuel system. Engine overheats 6. Dirty air cleaner. 1. Engine oil level low. 2. Air flow restricted. Engine hesitates at high RPM Engine Idles rough 1. Spark plug(s) gap too close. 1. Spark plug(s) fouled, faulty or gap too wide. 2. Dirty air cleaner. Excessive vibration Mower will not mulch grass 1. Cutting blade loose or unbalanced. 2. Damaged or bent cutting blade. 1. Engine speed too low. 2. Wet grass. 3. Excessively high grass. Uneven cut 4. Dull blade. 1. Deck not leveled properly. 2. Dull blade. 3. Uneven tire pressure. Remedy 1. Place knob in disengaged (OFF) position. 2. Engage parking brake. 3. Connect wire(s) to spark plug(s). 4. Place throttle lever to FAST position. 5. Move the Throttle/Choke Control into choke position. 6. Fill tank with clean, fresh (less than 30 days old) gas. 7. Clean fuel line and replace fuel filter. 8. Clean, adjust gap or replace plug(s). 9. Crank engine with throttle in FAST position. 10. Replace fuse. 1. Move Throttle/Choke Control out of the choke position. 2. Connect spark plug wire(s). 3. Clean fuel line; fill tank with clean, fresh gasoline and replace fuel filter. 4. Clear vent or replace cap if damaged. 5. Drain fuel tank. Refill with clean, fresh gasoline. 6. Replace air cleaner paper element or clean foam pre-cleaner. 1. Fill crankcase with proper amount and weight of oil. 2. Clean grass clippings and debris from around the engine's cooling fins and blower housing. 1. Remove spark plug(s) and reset the gap. 1. Replace spark plug(s). Set plug gap. 2. Replace air cleaner element and/or clean pre-cleaner. 1. Tighten blade and spindle. 2. Replace blade. 1. Place throttle in FAST (rabbit) position. 2. Do not mulch when grass is wet. 3. Mow once at a high cutting height, then mow again at desired height or make a narrower cutting swath. 4. Sharpen or replace blade. 1. Perform side-to-side deck adjustment. 2. Sharpen or replace blade. 3. Check tire pressure in all four tires. 29

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Problem
Cause
Remedy
Engine fails to start
1.
PTO/Blade Engage knob engaged.
2. Parking brake not engaged.
3.
Spark plug wire(s) disconnected.
4.
Throttle control lever not in correct starting
position.
5. Choke not activated
6.
Fuel tank empty, or stale fuel.
7. Blocked fuel line.
8. Faulty spark plug(s).
9. Engine flooded.
10.
Fuse(s) blown.
1.
Place knob in disengaged (OFF) position.
2. Engage parking brake.
3.
Connect wire(s) to spark plug(s).
4.
Place throttle lever to FAST position.
5.
Move the Throttle/Choke Control into choke
position.
6.
Fill tank with clean, fresh (less than 30 days
old) gas.
7.
Clean fuel line and replace fuel filter.
8.
Clean, adjust gap or replace plug(s).
9.
Crank engine with throttle in FAST position.
10.
Replace fuse.
Engine runs erratic
1.
Tractor running with CHOKE activated.
2. Spark plug wire(s) loose.
3.
Blocked fuel line or stale fuel.
4. Vent in gas cap plugged.
5.
Water or dirt in fuel system.
6. Dirty air cleaner.
1.
Move Throttle/Choke Control out of the
choke position.
2. Connect spark plug wire(s).
3.
Clean fuel line; fill tank with clean, fresh
gasoline and replace fuel filter.
4.
Clear vent or replace cap if damaged.
5.
Drain fuel tank. Refill with clean, fresh
gasoline.
6.
Replace air cleaner paper element or clean
foam pre-cleaner.
Engine overheats
1.
Engine oil level low.
2. Air flow restricted.
1.
Fill crankcase with proper amount and
weight of oil.
2.
Clean grass clippings and debris from around
the engine’s cooling fins and blower housing.
Engine hesitates at high
RPM
1.
Spark plug(s) gap too close.
1.
Remove spark plug(s) and reset the gap.
Engine Idles rough
1.
Spark plug(s) fouled, faulty or gap too wide.
2. Dirty air cleaner.
1.
Replace spark plug(s). Set plug gap.
2.
Replace air cleaner element and/or clean
pre-cleaner.
Excessive vibration
1.
Cutting blade loose or unbalanced.
2. Damaged or bent cutting blade.
1.
Tighten blade and spindle.
2. Replace blade.
Mower will not mulch grass
1.
Engine speed too low.
2. Wet grass.
3.
Excessively high grass.
4. Dull blade.
1.
Place throttle in FAST (rabbit) position.
2.
Do not mulch when grass is wet.
3.
Mow once at a high cutting height, then
mow again at desired height or make a
narrower cutting swath.
4. Sharpen or replace blade.
Uneven cut
1.
Deck not leveled properly.
2. Dull blade.
3.
Uneven tire pressure.
1.
Perform side-to-side deck adjustment.
2. Sharpen or replace blade.
3.
Check tire pressure in all four tires.
Troubleshooting
8
29