Troubleshooting; Guide In Using The Troubleshooting Table - Cub Cadet Sc2400 Operator's Manual

17. TROUBLESHOOTING

1. Guide in Using the Troubleshooting Table

The troubleshooting table given below is intended to provide a simple guide for the operator or owner. If
any fault, failure or a problem that requires repair work has occurred, contact your local Cub Cadet
Yanmar dealer for technical assistance.
1. Engine
Symptom
1 Engine does not
start or engine
starts, but stalls
immediately.
2 Engine starts, but
fails to run
smoothly or is not
powerful.
3 Engine starts
successfully, but
stops suddenly.
4 Blackish exhaust.
5 Pale bluish
exhaust.
17. TROUBLESHOOTING
Cause
Diesel fuel is not flowing or is not
flowing sufficiently to the engine.
Air is trapped in the fuel system.
Water contamination in the fuel
system.
In cold weather, the engine oil viscosity
is excessively high, which causes
greater resistance. As a result, the
engine speed is lower than normal.
The power of the battery is too low and
the starter fails to accelerate to a
speed sufficient to start the engine.
Stale diesel fuel (owing to prolonged
storage).
Contaminated diesel fuel.
Clogged air cleaner.
The fuel shut-off valve is not in the fully
OPEN position.
No diesel fuel.
The fuel shut-off valve is not in the
OPEN position.
Poor diesel fuel quality.
Too much engine oil.
Clogged air filter.
Faulty or defective injection nozzle.
Poor diesel fuel quality.
Remedy
• Check that there is sufficient fuel in the
fuel tank. Refuel as necessary.
• Check that the fuel filter is not clogged.
Replace the clogged filter.
• Check the fuel line for looseness.
Retighten any loose connections.
• Bleed air from the fuel system.
• Remove water from the fuel tank, fuel lines
and fuel filter (replace filter as necessary).
Refill the fuel tank with diesel fuel.
• Use a less viscous engine oil; Be sure to
change to a more viscous engine oil in
summer. (Consult your local Cub Cadet
Yanmar dealer for details.)
• Clean the battery posts and terminals,
then measure the voltage of the battery. If
the voltage is 11 V or lower, replace the
battery with a new one.
• During cold weather, it is recommended to
remove the engine from the tractor and
store it indoors. Recharge the battery (as
necessary) before installing it in the
tractor.
• Replace the diesel fuel.
• Replace the diesel fuel. Replace fuel filter
(as necessary).
• Replace the air cleaner.
• Fully open the fuel shut-off valve.
• Refuel.
• Open the fuel shut-off valve.
• Replace the diesel fuel and fuel filter.
• Drain the engine oil to the specified level.
• Clean or replace the air filter.
• Contact your local Cub Cadet Yanmar
dealer for technical assistance.
• Replace the diesel fuel and fuel filter.
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Sc2400 Operator's Manual