Kohler 15CCO Service Manual page 61

Problem
Overheats
Defective water pump
Problem
Operates
erratically
Governor not properly
adjusted or defective
(Engine not operating
TP-5606 6/02
Possible Cause
Low coolant
Air cleaner clogged
Fan belt broken
or loose
Radiator clogged
or dirty
Radiator cap
defective
Engine malfunction
Defective K30
relay (remote
radiator system)
Possible Cause
Air cleaner clogged
Stale or bad fuel
at rated RPM)
Fuel line restriction
Corrective Action
Replenish cooling
system
Clean or replace
element
Tighten/replace
fan belt
Clean radiator
(inside and outside)
Replace radiator cap
Check water pump
Troubleshoot engine
Check/replace
K30 relay
Corrective Action
Clean or replace
element
Replace
Check engine speed
using frequency meter
or tachometer.
NOTE: For 60 Hz--1800 RPM
For 50 Hz--1500 RPM
Inspect fuel lines and
tank.
Reference
Section 3. Cooling System
Section 3. Air Cleaner
Service
Section 3. Drive Belt
Engine Service Manual
Engine Service Manual
Section 3. Engine/Generator
Component Testing
Reference
Section 3. Air Cleaner
Service
Section 3. Governor
General Troubleshooting 4-9