Specifications
| Fuel | gasoline |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 0 kW |
| Standby kVA | 0 |
| Voltage options | 120 V |
| Phase | 1 |
| Rated current | [3.3] A |
| Power factor | 100 |
| Battery voltage | 12 V |
| Battery quantity | 1 |
| Dimensions (L×W×H) | 405×284×337 mm |
| Dry weight | 17 kg |
| Fuel tank | 2.0 L |
| Tank runtime | 4.0 hr |
Maintenance & consumables
for the Cummins/Onan GN550-DG-A3| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Foam wrapper + cartridge element; clean/re-oil foam each service, replace cartridge every 6 cleanings or yearly. | — | 25 hr | ||
| Fuel filter | Fuel filter/cock cleaning per periodic maintenance chart; no cartridge part number given. | — | |||
| Oil | API SE/SF class engine oil; 10W-30 below -10C, SAE#20 below 15C, SAE#30 above 15C. First change at 10 hrs, then every 50 hrs. | — | 50 hr | ||
| Spark plug | Gap 0.6-0.7mm (GS130/GS280 engines), 0.7mm (K1400/K3000), 1.0mm (K2100/GN1850), 0.7mm (K1800), varies by model. | — | 50 hr |
Common questions
What is the power rating of the Cummins/Onan K450?
The Cummins/Onan K450 is rated 0 kW standby (0.4 kVA).
What engine is in the Cummins/Onan K450?
The Cummins/Onan K450 is powered by the Cummins/Onan GN550-DG-A3 engine.
Is the Cummins/Onan K450 diesel or gas?
The Cummins/Onan K450 runs on gasoline.
Troubleshooting
6Symptoms & remedies
| Symptom | Cause | Remedy |
|---|---|---|
| Pilot lamp does not light and output voltage is OV | Faulty contact of receptacles or disconnected wiring inside of control box | Repair or replace |
| Output voltage is not delivered | Disconnected wiring | Repair or replace stator coil, demagnetization of permanent magnet, clean brush contact and slip ring, repair or replace brush, or repair or replace sub coil |
| Only slight output voltage is delivered (3 ~ 6V) | Worn brush or faulty contact surface of slip ring | Clean brush contact and slip ring, or replace brush |
| Rated output voltage is not available | Abnormal load circuit, blown circuit breaker (S.T.D., voltage 10%) | Remove abnormality in load circuit and replace fuse |
| Fluctuation of engine revolution is abnormal | Disconnected or punctured AVR capacitor, faulty brush contact, excessive initial current, low engine output, faulty engine governor | Replace capacitor, check for wear, wear amount, and contamination of contacting surface of brush and clean if necessary, repair or replace |
| Output voltage is more than S.T.D. voltage by 30% | Defective AVR | Replace |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing. Full Cummins/Onan K450 troubleshooting guide (8 entries) →
Repair guides
10- | Trouble Checking method asurement / Possible cause Countermeasures
- @ Disconnected wiring (rear Check wiring. Repair.
- Tester is in R x 1 range.
- $s _ does not | ' wiring). Replace cir- |
- 4.1 Disassembly and reassembly of generator parts
- | Trouble Checking method asurement / Possible cause Countermeasures: *Check for short to ground condition. Test meter set on
- *Check for short to ground condition. Test meter set on
- Tester is in R x 1 range.: Tester probe (+) | Tester probe (—) tester
- Tester probe (+) | Tester probe (—) tester
- Trouble Checking method easu e u Possible cause Countermeasures: *Check for short to ground condition. Test meter set on
Step-by-step procedures compiled from the Cummins/Onan service manual for this model.
Parts
1model family| Part # | Description | Qty | System | |
|---|---|---|---|---|
| M-1538 | Air Cleaner | 1 | Air filter | Amazon eBay |
Compiled from this model's family documentation — may include parts for closely-related variants. Confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.
Available documents
Operator's manual — 981-0122 Onan K450 K1000 Operator's Manual (12-1983)