Kohler SFGLD480 Operation & Maintenance Manual page 311

SYMPTOM
Low gas pressure
High gas pressure
Low water pressure
High water pressure
Low water temperature
High water temperature
PRODUCT INFORMATION
IO-G-T-00-001e
GAS ENGINES TROUBLESHOOTING
PROBABLE CAUSE
Broken or misadjusted regulator
Insufficient gas supply pressure
Fuel leaks
Undersized pipelines
Clogged gas filter
Broken or misadjusted regulator
Damaged or inaccurate pressure gauge
Low coolant level
Blocked radiator or heat exchanger
Coolant leak
Damaged cylinder head gasket
Damaged or defective pump
Cavitation
Damaged cylinder head gasket
Flow restriction in water system
High water temperature
Thermostats stuck open
Broken or inaccurate thermometer
Broken or inaccurate thermometer
Low coolant level
Thermostats stuck closed
Air bubbles in circuit
Overload
Damaged or defective water pump
Water frozen in radiator
Damaged cylinder head gasket
Late ignition
Cracked cylinder head
Cracked liner
Low water flow
INDEX
B
REMEDY
Readjust or change regulator
Contact gas supplier
Inspect fuel system and repair
Check circuit and make sure pipe diameter is
adequate for the gas quality
Clean or change filtering element
Readjust or change regulator
Change or recalibrate
Refill with coolant
Clean radiator or heat exchanger
Locate and repair leaking item
Change gasket
Repair or change pump
Drain the circuit
Change gasket
Check system and change items restricting
flow
Clean heat exchanger or radiator; check fan,
thermostats...
Change thermostats
Recalibrate or change thermometer
Recalibrate or change thermometer
Refill with coolant
Change thermostats
Vent the circuit
Check power signal
Repair or change water pump
Defrost radiator
Change cylinder head gasket
Re-time
Change cylinder head
Change liner
Check system and change items restricting
flow
6.1.8
DATE
Dep. 2
February 2016
O&M_2.002211.810_A_10_2016
8/10