Kohler 15CCO Service Manual page 59

Problem
Will not
carry load
or runs
rough Vent in fuel tank cap
(continued)
Improper type of fuel
Water, dirt, or air in fuel
Incorrect fuel injection
Dirty or faulty injectors
Improper cylinder top
Defective crankshaft
bearing or piston pin
TP-5606 6/02
Possible Cause
Fuel line restriction
obstructed
Dirty fuel filter
system
Defective fuel
pump
Fuel leak
Valves not sealing
Air cleaner clogged
timing
clearance
Defective piston or
piston rings
bearing
Improper valve
clearance
Corrective Action
Inspect fuel lines and
tank.
Clean cap in solvent, blow
dry
Replace fuel filter
Use proper type of fuel;
consult fuel supplier
Drain, fill, and
bleed air in the system
Replace fuel filters
Check fuel pump
NOTE:
Fuel pump is polarity
sensitive and will fail
if the lead connections
are made in reverse
Tighten fittings
Compression test
Clean or replace
element
Check injection timing
Check injectors
Check clearance
Check compression
Check components
Adjust proper valve
clearance
Reference
Section 3. Fuel System
Section 3. Fuel System
Section 3. Fuel System
Engine Service Manual
Engine Service Manual
Engine Service Manual
Section 3. Air Cleaner
Service
Engine Service Manual
Engine Service Manual
Engine Service Manual
Engine Service Manual
Engine Service Manual
Section 3. Valve Clearance
Engine Service Manual
General Troubleshooting 4-7