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11. TROUBLESHOOTING
If it is felt that there is any abnormality, investigate the cause immediately and take the necessary action to prevent any serious
failure.
If the cause is unknown, please contact your distributor for repairs.
When contacting your distributor, please give the machine serial number and engine number.
11.1 PROBLEMS WITH ENGINE RELATED PARTS
Problem
Main causes
Remedy
Starting motor does not turn when starting
switch is turned to START
• Insufficient battery charge
• Defective wiring
• Failure in starting motor, relay
• Charge
• Check, repair
• Contact your distributor
Starting motor turns, but cranks engine
slowly
• Insufficient battery charge
• Defective ground connection wiring
• Viscosity of engine oil is too high
• Charge
• Check, repair
• Change to proper viscosity
Starting motor turns, but engine does not
start
• Lack of fuel
• Air in fuel line
• Failure in fuel injection pump
•Failure in engine
• Check, add fuel
• Bleed air
• Contact your distributor
• Contact your distributor
After warming-up operation, [Engine oil
pressure lamp] on instrument panel stays
lighted up even when engine speed is
raised
(Engine oil pressure does not rise)
• Lack of engine oil
• Clogged engine oil filter
• Failure in engine parts
• Check, add oil
• Replace new parts
• Contact your distributor
Engine water temperature gauge points to
around red range, or steam spurts out
from near radiator system
• Lack of coolant
• Leakage of oil from coolant system
• Loose fan belt
• Clogged radiator fin
• Defective thermostat
• Overloading, operation under
excessive load
• Check, add water
• Check, repair or ccontact your
distributor
• Check, adjust, or replace new belt
• Check, clean
• Replace new parts
• Reduce to below max. payload
Engine water temperature gauge points
does not reach around green range
• Defective thermostat
• Defective engine water temperature
gauge
• Replace new parts
• Replace new parts
Engine exhaust color is white
• Engine oil level is too high
• Improper fuel
• Adjust to correct amount
• Change to specified fuel
Engine exhaust color is too black
• Clogged air cleaner
• Improper fuel
• Failure in engine
• Check, clean
• Change to specified fuel
• Contact your distributor
Summary of Contents for MST-800VD
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