Cub Cadet Yanmar SC2400 Operator's Manual page 129

6 The engine
overheats.
2. Machine
Symptom
1 The machine
excessively
vibrates.
2 Engine has
successfully
started, but the
machine fails to
operate.
3 3-point hitch does
not rise at all.
4 3-point hitch
lowers too slowly.
5 3-point hitch does
not lower at all.
6 3-point hitch
lowers too fast.
17. TROUBLESHOOTING
Insufficient engine coolant
The engine is overloaded.
Insufficiently tensioned fan belt
The radiator core is blocked.
Poor quality of engine coolant
Cause
Engine speed is too low.
The Power Take Off (PTO) connecting
the machine with the mounted
implement is not securely connected.
The engine throttle has not been
correctly adjusted.
Parking brake is in the engaged state.
Insufficient transmission oil,
deteriorated transmission oil or
clogged transmission filter
Transmission oil is too cold.
Insufficient transmission oil,
deteriorated transmission oil or
clogged transmission filter
Transmission oil is too cold.
Excessively heavy implement on the 3-
point hitch
Hydraulic pressure stop valve is in an
insufficiently open position.
Hydraulic pressure stop valve is in the
closed position.
Hydraulic pressure stop valve is in an
excessively open position.
• Add engine coolant.
• Check the radiator and the lines to and
from the radiator for leakage. If leakage is
found, contact your local Cub Cadet
Yanmar dealer for technical assistance.
• Operate the tractor carefully. Avoid
overloading.
• Adjust the fan belt to the specified tension
value; or replace it.
• Eliminate the cause of blocking.
• Possibly, sludge has accumulated on the
engine water jacket. Contact your local
Cub Cadet Yanmar dealer for technical
assistance.
Remedy
• Run the engine at a higher appropriate
speed.
• Disconnect the Power Take Off (PTO)
shaft, and reconnect it. Check if excessive
vibration reoccurs. If excessive vibration
persists, immediately stop operation and
contact your local Cub Cadet Yanmar
dealer for technical assistance.
• Contact your local Cub Cadet Yanmar
dealer for technical assistance.
• Disengage the parking brake.
• Check the amount and quality of the oil.
Replace deteriorated oil; refill as
necessary. Check the filter for clogging,
and replace the clogged filter with a new
one.
• Start the engine, and warm up. Only then,
operate the tractor.
• Check the amount and quality of the oil.
Replace deteriorated oil; refill as
necessary. Check the filter for clogging,
and replace the clogged filter with a new
one.
• Start the engine, and warm up.
• Use an implement of an acceptable
weight.
• Open the hydraulic pressure stop valve.
• Open the hydraulic pressure stop valve to
an appropriate position.
• Close the hydraulic pressure stop valve to
an appropriate position.
17-2
Sc2400 Operator's Manual