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Kohler KDW 1003 Generator Set

The Kohler KDW 1003 is a Diesel generator set powered by a Kohler KDW1003 engine. It holds about 2.4 L (0.6 gal) of oil and 4.5 L (1.2 gal) of coolant. The set measures 515.5×351.5×269.2 mm (20.3×13.8×10.6 in) and weighs about 421 kg (928 lb). The same KDW1003 engine also powers generator sets from SDMO.

1.028 L
Displacement
2.4 L
Oil capacity
4
Document types

How to read your Kohler serial & model number →

Service parts for the KDW 1003

Grouped by system, with how many of each the parts manual calls for.

Air intake

1 required
12-036Air filtersee priceAmazon

Fuel system

1 required

Oil system

1 required

Belts

1 required
12-039Beltsee priceAmazon

Cooling system

1 required
12-038Coolant filtersee priceAmazon

Prices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.

Specifications

FuelDiesel
Oil capacity2.4 L
Battery voltage12 V
Battery quantity44
Dimensions (L×W×H)515×351×269 mm
Dry weight421 kg

Engine

Kohler KDW1003
Oil capacity4.7 L
Coolant capacity4.5 L
Displacement1.028 L
AspirationLiquid-cooled with axial fan
Rated speed3600 rpm

Maintenance & consumables

for the Kohler KDW1003
ItemSpecCapacityPart #Interval
Air filterAir filter12-036 Amazon eBay
Fuel filterFuel filter12-037 Amazon Amazon eBay eBay KuduParts $132.00
Oil filterOil filter12-035 Amazon eBay eBay KuduParts $42.00
Battery
BeltBelt12-039 Amazon eBay
Coolant4.5
Coolant filterCoolant filter12-038 Amazon eBay FridayParts $13.49
Oil2.4
Spark plug

Common questions

What engine is in the Kohler KDW 1003?

The Kohler KDW 1003 is powered by the Kohler KDW1003 engine.

What kind of fuel does the Kohler KDW 1003 run on?

The Kohler KDW 1003 runs on Diesel.

How much oil does the Kohler KDW 1003 take?

The Kohler KDW1003 engine in the Kohler KDW 1003 has an oil capacity of 4.7 liters.

What oil filter fits the Kohler KDW 1003?

The Kohler KDW 1003 uses oil filter part number 12-035.

What fuel filter fits the Kohler KDW 1003?

The Kohler KDW 1003 uses fuel filter part number 12-037.

What air filter does the Kohler KDW 1003 use?

The Kohler KDW 1003 uses air filter part number 12-036.

Troubleshooting

6

Symptoms & remedies

SymptomCauseRemedy
The engine rpms suddenly increase and decreaseTHE ENGINE MUST BE STOPPED IMMEDIATELY
A sudden and unusual noise is heardTHE ENGINE MUST BE STOPPED IMMEDIATELY
The colour of the exhaust fumes suddenly darkensTHE ENGINE MUST BE STOPPED IMMEDIATELY
The engine does not startSulphated battery terminals corroded, Battery voltage too low, Low fuel level, Frozen fuel, Clogged fuel filter, Air suction in fuel system, Clogged air filter, Clogged pipes, Open fuse, Intake or exhaust system cloggedClean the battery terminals, Recharge the battery or replace it, Refuel, Contact KOHLER authorised workshops, Replace with a new filter, Contact KOHLER authorised workshops, Replace with a new filter, Contact KOHLER authorised workshops, Clean the tank and refuel with quality fuel, Replace the engine oil; if the problem persists, contact KOHLER authorised workshops, Replace with a new fuse; if the problem persists, contact KOHLER authorised workshops
Engine starts but stopsInefficient electrical connections, Sulphated battery terminals, Clogged fuel filter, Clogged fuel pipesClean the electrical contacts; if the problem persists, contact KOHLER authorised workshops, Clean the battery terminals, Replace with a new filter and clean the tank, Contact KOHLER authorised workshops
RPM instability at idle speedClogged fuel pipesContact KOHLER authorised workshops

Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing. Full Kohler KDW 1003 troubleshooting guide (13 entries) →

Repair guides

1

Step-by-step procedures compiled from the Kohler service manual for this model.

Parts

16
Part #DescriptionQtySystem
12-035Oil filter1Oil filter Amazon eBay eBay KuduParts $42.00
12-036Air filter1Air filter Amazon eBay
12-037Fuel filter1Fuel filter Amazon Amazon eBay eBay KuduParts $132.00
12-038Coolant filter1Coolant filter Amazon eBay FridayParts $13.49
12-039Belt1Belt Amazon eBay
12-040Spark plug1Spark plug Amazon Amazon eBay eBay
12-041Glow plug1Glow plug Amazon eBay
12-042Pump1Pump Amazon eBay
12-043Seal1Seal Amazon eBay
12-044Gasket1Gasket Amazon eBay FridayParts $38.50
12-045Thermostat1Thermostat Amazon Amazon eBay eBay FridayParts $153.98
12-046Impeller1Impeller Amazon eBay
12-047Injectors1Injector Amazon eBay
12-048Sensor1Sensor Amazon eBay
12-049Hose1Hose Amazon eBay eBay
ED0053029340Rocker arm cover gasket1Gasket Amazon eBay

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
Prime63.016.64
Standby43.011.36

Available documents

Engine spec — Diesel Full Line (Kohler)Engine spec — Kohler Diesel Engines (Kohler)Engine spec — Liquid Cooled Diesel Engines (Kohler)Engine spec — Rehlko KDW Liquid cooled web (Kohler)Owner's manual — KDW 702 1003 1404 R 02 (Kohler)Parts manual — Diesel Full Line Rehlko (Kohler)Parts manual — kohler-lombardini-diesel-engine-kd441 (Kohler)Service manual — KDW702 1003 1404 SM EN (Kohler)Service manual — OM KDW K-HEM 502 702 1003 1404 R 00 EN (Kohler)Service manual — kd441-engine (Kohler)Service manual — tp6776-Workshop-Manual-Kohler-KDW-702-1003-1404-AMP (Kohler)
Other sets with this engine