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Kohler 15REYG Generator Set

The Kohler 15REYG is a 15 kW (15 kVA) LP Gas standby generator set powered by a General Motors GM 1.6L OHC engine. It operates at 60 Hz. It holds about 3.5 L (0.9 gal) of oil and 11.5 L (3.0 gal) of coolant.

15 kW
Standby
1.6 L
Displacement
3.5 L
Oil capacity
5
Document types

How to read your Kohler serial & model number →

Specifications

FuelLP Gas
Frequency60.0 Hz
Standby power15 kW
Standby kVA15
ControllerADC 2100, Advanced Digital (ADC 2100)
Oil capacity3.5 L
Alternator2F5

Engine

General Motors GM 1.6L OHC
Oil capacity3.5 L
Coolant capacity11.5 L
Displacement1.6 L
Rated speed1800 rpm

Maintenance & consumables

for the General Motors GM 1.6L OHC
ItemSpecCapacityPart #Interval
Air filterInspect and clean×1GM16944 Amazon eBay $49.68 PartsGeek
Fuel filter find
Oil filter×1GM28351200 hr Amazon eBay $19.46 PartsGeek
Belt×1GM28352 Amazon eBay $35.00 PartsGeek
CoolantFlush the cooling system11.5800 hr
Oil3.5 LGM62348-SKP1-QS200 hr Amazon eBay PartsGeek

Common questions

What is the power rating of the Kohler 15REYG?

The Kohler 15REYG is rated 15 kW standby (15.0 kVA).

What engine does the Kohler 15REYG use?

The Kohler 15REYG is powered by the General Motors GM 1.6L OHC engine.

What fuel does the Kohler 15REYG use?

The Kohler 15REYG runs on LP Gas.

What is the oil capacity of the Kohler 15REYG?

The General Motors GM 1.6L OHC engine in the Kohler 15REYG has an oil capacity of 3.5 liters.

What alternator does the Kohler 15REYG use?

The Kohler 15REYG uses a 2F5 alternator.

Troubleshooting

5

Symptoms & remedies

SymptomCauseRemedy
Generator Set does not startFault Warning or ShutdownCheck the fault warning and reset the controller if necessary
Engine fails to reach operating temperatureCooling system issueCheck coolant level, flush and clean cooling system if necessary
Generator produces insufficient powerAir filter cloggedClean or replace air filter
Gas fuel leaks can cause an explosion.Check the LPG vapor or natural gas fuel system for leakage by using a soap and water solution with the fuel system test pressurized to 6--8 ounces per square inch (10--14 inches water column). Do not use a soap solution containing either ammonia or chlorine because both prevent bubble formation. A successful test depends on the ability of the solution to bubble.
LPG liquid withdrawal fuel leaks can cause an explosion.Check the LPG liquid withdrawal fuel system for leakage by using a soap and water solution with the fuel system test pressurized to at least 90 psi (621 kPa). Do not use a soap solution containing either ammonia or chlorine because both prevent bubble formation. A successful test depends on the ability of the solution to bubble.

Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.

Parts

13
Part #DescriptionQtySystem
359422Washer, sealing (30.1 mm OD)1Seal PartsGeek
365499O-ring, ISO 6149 (11.3 mm ID)2Seal PartsGeek
GM16944Element, air cleaner1Air filter Amazon eBay $49.68 PartsGeek
GM28351Filter, oil1Oil filter Amazon eBay $19.46 PartsGeek
GM75873Air Intake Resonator Kit1Air filter PartsGeek
X-386-109Fuel line, flexible1Hose PartsGeek
X-422-15Fuel line, flexible1Hose PartsGeek
X-422-35Fuel line, flexible1Hose PartsGeek
X-422-38Line, flexible1Hose PartsGeek
364345Switch, assembly pressure1Service part / kit PartsGeek
GM36247Exhaust pipe1Service part / kit PartsGeek
GM66054Decal, check oil1Service part / kit PartsGeek
GM66559Lead, oil pressure switch1Service part / kit PartsGeek

Service, wear & replacement parts referenced for this model and its engine — confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.

Fuel consumption

RatingLoadL/hgal/h
Standby25%2.5
Standby50%3.5
Standby75%4.5
Standby100%5.7

Available documents

Spec sheet (Kohler)Installation manual — tp6727 (Kohler)Installation manual — tt1364 (Kohler)Installation manual — tt1486 (Kohler)Owner's manual — tp6728 (Kohler)Parts manual (Kohler)Service manual — tp6198 (Kohler)