TP-5695 12/93
4-2 Troubleshooting
Engine (Continued)
Problem
Possible Cause
Corrective Action
Stops suddenly
Out of fuel
Replenish
Stops suddenly
Air intake clogged
Clean
Fuse blown in controller
Replace fuse
Defective seawater pump impeller
Replace
Clogged seawater strainer
Clean strainer
Ignition coil failure
Check for spark
Fuel line restriction
Check fuel lines and tank
Fuel vapor lock
Check fuel line routing
Defective electric fuel pump
Check pump
Dirty fuel screen
Clean fuel screen
Faulty spark plug(s)
Replace spark plug(s)
No/low oil pressure
Check oil pressure and pump
Defective low oil pressure (LOP) safety
shutdown switch
Check LOP shutdown switch
High temperature shutdown
Check engine coolant system
Defective high exhaust temp. (HET) and/or
high water temp. (HWT) safety shutdown
switch(es)
Check HET and HWT shutdown switch(es)
Loss of AC output
See authorized Kohler service
dealer/distributor
Faulty antidieseling solenoid
Replace solenoid
Lacks power
Air intake clogged
Clean
Lacks power
Bad or stale fuel
Replace fuel
Faulty spark plug(s)
Replace (and regap) plug(s)
Improper timing
Check timing
Choke solenoid defective
Check and/or change
Engine not operating at rated RPM
Check governor
Governor adjustments incorrect
Adjust governor
Carbon build-up
Clean carbon from cylinder heads
Improper cooling
Inspect cooling system
Dirty fuel screen
Clean screen
Defective ignition coil
Replace coil
Fuel line restricted
Check fuel lines
Engine overloaded
Reduce load
Carburetor adjustment wrong
Adjust carburetor
Operates erratically
Air intake clogged
Clean
Operates erratically
Stale or bad fuel
Replace fuel
Fuel pump vapor lock
Allow unit to cool and attempt restart
Clogged fuel screen
Clean screen
Faulty spark plug(s)
Replace spark plug(s)
Carburetor adjustment incorrect
Adjust carburetor