HomeCummins/OnanCummins/Onan K3000

Cummins/Onan K3000 Generator Set

The Cummins/Onan K3000 is a 2.4 kW (2.4 kVA) regular-grade gasoline standby generator set powered by a Cummins/Onan GN2500-DG-A3 engine. It is available at 120 V and 240 V, 3-phase, 60 Hz and rated 20.8 A. It holds about 0.8 L (0.2 gal) of oil. An integrated tank holds 8.5 L (2.2 gal).

2 kW
Standby
0.252 L
Displacement
0.8 L
Oil capacity
0
Document types

How to read your Cummins/Onan serial & model number →

Typical fuel consumption for 0–5 kW Gasoline generators →

Compare with other 0–5 kW Gasoline generators →

Specifications

Fuelregular-grade gasoline
Frequency60.0 Hz
Standby power2 kW
Standby kVA2
Oil capacity0.8 L
Voltage options120 V, 240 V
Phasethree-phase
Rated current20.8 A
Power factor100
Battery voltage12 V
Battery quantity1
Fuel tank8.5 L

Engine

Cummins/Onan GN2500-DG-A3
Displacement0.252 L
Aspirationnaturally_aspirated
Rated speed3000 rpm

Common questions

What is the power rating of the Cummins/Onan K3000?

The Cummins/Onan K3000 is rated 2 kW standby (2.4 kVA).

Which engine powers the Cummins/Onan K3000?

The Cummins/Onan K3000 is powered by the Cummins/Onan GN2500-DG-A3 engine.

What fuel does the Cummins/Onan K3000 use?

The Cummins/Onan K3000 runs on regular-grade gasoline.

Troubleshooting

6

Symptoms & remedies

SymptomCauseRemedy
Crankcase pressure might blow out hot oil and cause serious burns.Do not attempt to check oil while the generator set is running. Add oil until it reaches the top of the oil port.
Fuel level indicator looks damaged or loose.Install a new indicator before starting generator set.
Generator set operates on a slight grade, and the fuel tank is completely filled.Do not fill completely if the generator set will operate on a slight grade.
Faulty electrical equipment connected to the generator presents an electrical shock hazard.Check all electrical equipment for frayed cords or breaks in the insulation before using. Properly applied and maintained ground fault circuit interrupters can afford additional protection against the hazard of electrical shock.
Pilot lamp does not light and output voltage is OVFaulty contact of receptacles or disconnected wiring inside of control boxRepair or replace
Output voltage is not deliveredDisconnected wiringRepair or replace stator coil, demagnetization of permanent magnet, clean brush contact and slip ring, repair or replace brush, or repair or replace sub coil

Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing. Full Cummins/Onan K3000 troubleshooting guide (12 entries) →

Parts

2
Part #DescriptionQtySystem
981-0123Recoil Starter Control Panel1Recoil starter Amazon eBay
M-1534Air Cleaner1Air cleaner 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.

Available documents

Other sets with this engine