Kohler 20-3250 kW manual Exerciserun time And/orevent

158 Section 4Troubleshooting

Trouble Symptoms

notDoescrank

Cranksbut notdoesstart

hardStarts

Noor low output

voltage

Stopssuddenly

Lackspower

x

Lowoil pressure

x

Excessiveor abnormalnoise

Displayserror message/locksup

Exerciserun time

and/orevent

recordsinoperative

Air openings clogged

Clean the air openings.

—

Overheats

fuel High consumption

Probable Causes

Recommended Actions

Reference*

Section or

Publication

Cooling System

x

Coolant level low

Restore the coolant to normal operating level.

Section 3

x

Cooling water pump inoperative

Tighten or replace the belt. Replace the water pump.

Eng. O/M or S/M

x

High temperature shutdown

Allow the engine to cool down. Then troubleshoot the

Sec. 3, Eng. O/M

cooling system.

x

Low coolant level shutdown, if

Restore the coolant to normal operating level.

Section 3

equipped

x

Thermostat inoperative

Replace the thermostat.

Eng. S/M

Fuel System

x

x

x

Air in fuel system (diesel only)

Bleed the diesel fuel system.

Eng. O/M

x

x

Ether canister empty or system

Replace or repair the ether starting system.

Eng. O/M

inoperative, if equipped (diesel only)

x

x

Fuel tank empty or fuel valve shut off

Add fuel and move the fuel valve to the ON position.

—

x

x

x

Fuel feed or injection pump

Rebuild or replace the injection pump.[

Eng. S/M

inoperative (diesel only)

x

x

x

Fuel or fuel injectors dirty or faulty

Clean, test, and/or replace the inoperative fuel injector.[

Eng. S/M

(diesel only)

x

x

x

x

Fuel filter restriction

Clean or replace the fuel filter.

Eng. O/M

x

Fuel solenoid inoperative

Troubleshoot the fuel solenoid.[

Eng. S/M

x

x

Fuel pressure insufficient (gas only)

Check the fuel supply and valves.[

S/S, Gen. O/M

x

x

x

x

Fuel injection timing out of adjustment

Adjust the fuel injection timing.[

Eng. S/M

(diesel only)

Lube System

x

x

x

x

Crankcase oil type incorrect for

Change the oil. Use oil with a viscosity suitable for the

Eng. O/M

ambient temperature

operating climate.

x

x

x

Oil level low

Restore the oil level. Inspect the generator set for oil leaks.

Eng. O/M

x

Low oil pressure shutdown

Check the oil level.

Eng. O/M

* Sec./Section—numbered section of this manual; ATS—Automatic Transfer Switch; Eng.—Engine; Gen.—Generator Set; I/M—Installation Manual; O/M—Operation Manual;

S/M—Service Manual; S/S—Spec Sheet; W/D—Wiring Diagram Manual

TP

[ Have an authorized service distributor/dealer perform this service.

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