Cub Cadet Challenger 400LX Operation Manual - Page 18

Troubleshooting

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Troubleshooting Problem Engine will not start Engine is difficult to start Engine misfires under load Engine does not restart when warm Entire electrical system does not work Dead battery Battery will not take a charge Difficult to shift Indicator lights do not come on when key switch is in START position 18 7 Cause(s) 1. Battery has low voltage. 2. Loose or corroded battery connections. 3. Fuse is blown. 4. Spark plug wire is loose or disconnected 5. Faulty spark plug or coil 6. No Fuel or improper fuel. 7. Plugged fuel filter. 8. Defective starter solenoid. 9. Open-circuit in wiring. 1. Engine is cold. 2. Choke not being used or adjusted properly. 3. Plugged fuel filter. 4. Carburetor not adjusted properly or dirty. 5. Engine oil viscosity too heavy. 6. Spark plug is fouled. 7. Faulty spark plug or wire. 8. Loose or corroded electrical connections. 9. Stale or improper fuel. 1. Faulty spark plug. 2. Stale or dirty fuel. 3. Plugged fuel filter. 4. Faulty coil or wire. 1. Poor quality fuel. 2. Very hot weather conditions. 3. Fuel tank vent plugged. 4. Dirt in fuel filter. 1. Blown fuse. 2. Loose or corroded connections. 3. Dead or Faulty battery. 1. Shorted starter solenoid. 2. Key switch not turned to STOP position. 3. Faulty battery. 1. Dead battery. 2. Loose or corroded connections. 1. Idle speed too fast. 2. Gears not lined up. Tap throttle and let it return to idle. If still hard to shift, contact your nearest Cub Cadet dealer. 1. Faulty bulb. 2. Faulty wiring. 3. Faulty sensor. Continued on next page

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Troubleshooting
7
18
Problem
Cause(s)
Engine will not start
1. Battery has low voltage.
2. Loose or corroded battery connections.
3. Fuse is blown.
4.
Spark plug wire is loose or disconnected
5. Faulty spark plug or coil
6. No Fuel or improper fuel.
7. Plugged fuel filter.
8. Defective starter solenoid.
9. Open-circuit in wiring.
Engine is difficult to start
1. Engine is cold.
2.
Choke not being used or adjusted properly.
3. Plugged fuel filter.
4.
Carburetor not adjusted properly or dirty.
5. Engine oil viscosity too heavy.
6. Spark plug is fouled.
7.
Faulty spark plug or wire.
8. Loose or corroded electrical connections.
9. Stale or improper fuel.
Engine misfires under load
1. Faulty spark plug.
2. Stale or dirty fuel.
3. Plugged fuel filter.
4. Faulty coil or wire.
Engine does not restart when warm
1. Poor quality fuel.
2. Very hot weather conditions.
3. Fuel tank vent plugged.
4. Dirt in fuel filter.
Entire electrical system does not work
1. Blown fuse.
2. Loose or corroded connections.
3. Dead or Faulty battery.
Dead battery
1. Shorted starter solenoid.
2.
Key switch not turned to STOP position.
3. Faulty battery.
Battery will not take a charge
1. Dead battery.
2. Loose or corroded connections.
Difficult to shift
1. Idle speed too fast.
2.
Gears not lined up. Tap throttle and let it return to idle. If still hard to shift, contact your nearest
Cub Cadet dealer.
Indicator lights do not come on when key
switch is in START position
1. Faulty bulb.
2. Faulty wiring.
3. Faulty sensor.
Continued on next page