Branson 6640C - Page 157

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157
Situation Inspection item Solution
Coolant warning lamp is
on during operation.
Is the coolant level in the reservoir low? Rell the coolant
Engine oil warning lamp is
on during operation.
Is the engine oil level low? Rell the engine oil
Is the viscosity of the engine oil low? Replace the engine oil with the one with
proper viscosity.
Is the pressure switch defective? Replace the switch
Is the oil pump defective? Contact dealer for repair
The engine power is too
weak.
Is the air cleaner clogged? Inspect the air cleaner
Thermostat lamp is not
turned on.
Is the fuse burnt out? Replace the fuse
Battery warning lamp is on
during operation.
Is the regulator (current limit) defective? Contact dealer for repair
Is the fan belt loose or damaged? Adjust or replace the fan belt
TROUBLESHOOTING
6640C OPERATORS MANUAL (012612).indd 157 1/30/2012 2:31:10 PM