PRODUCT INFORMATION
INDEX
DATE
Dep. 2
IO-G-T-00-001e B
February 2016
GAS ENGINES TROUBLESHOOTING
1/10
1. INTRODUCTION
These instructions are intended as a guide to quick troubleshooting in Kohler gas engines.
The layout SYMPTOM / PROBABLE CAUSE / REMEDY leads to the solution of many minor engine
problems.
At all times, an after-sales technical service is at our customers' disposal for any help to diagnose failures.
2. TROUBLESHOOTING GUIDE
SYMPTOM
PROBABLE CAUSE
REMEDY
Crankshaft will not rotate,
using manual barring device.
Engine-driven machine in gear
Disengage the driven machine
Coolant inside cylinder:
1. Damaged
head
gasket
2. Damaged exhaust manifold gasket
3. Cracked
head
4. Cracked
liner
5. Cracked
crankcase
NOTE: Remove spark plugs to vent cylinders
of accumulated coolant.
1. Change head gasket
2. Change manifold gasket
3. Change
head
4. Change
liner
5. Repair crack or change crankcase
Seized piston
Change piston, rings and sleeve, as
appropriate.
Bearing stuck to crankshaft
Change bearings, check crankshaft.
Engine does not turn when
pressing the start button
1. Worn or faulty starter batteries
(1)
2. Air valve closed or low air pressure
(2)
3. Defective starter motor
4. Drive pinion blocked
5. Emergency stop on
6. Alarm
activated
1. Check batteries and change, if necessary
2. Open air valve or wait until there is
enough air pressure
3. Change starter motor
4. Unblock the pinion
5. Release emergency stop
(3)
6. Check system alarms and reset after
solving the failure
(1)
Electric starter
(2)
Pneumatic starter
(3)
First check that there is no risk for people or equipment and then solve the fault, if any.
CAUTION
Before operating the starter motor or the barring device, make sure the starter air valve is closed or the
starter batteries off in order to avoid personal injuries in case of unintentional start.
6.1.1
O&M_2.002211.810_A_10_2016