Specifications
Ratings spec sheet not in our library yet — see the documents below.
Filters & service parts
model family| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Replace more often in dusty environments. In hot weather, perform at least once a year. | — | 1000 hr | find | |
| Fuel filter | Replace sooner if engine performance deteriorates. | — | 500 hr | find | |
| Oil filter | Replace sooner if engine performance deteriorates. Must be performed by a trained and experienced mechanic (authorized Onan dealer). | — | 500 hr | find | |
| Belt | — | 8 hr | find | ||
| Coolant | High Pressure LPG Gensets: Drain the LPG system of accumulated sludge by opening the sludge drain valve. | 3.5 | — | 1000 hr | |
| Oil | API performance Class SJ, SH or SG engine oil, which may be in combination with performance Class CH-4, CG-4 or CF-4 (for example: SJ/CH-4). Also look for the SAE viscosity grade. | 4.5 quarts | — | 500 hr |
Compiled from this model's family documentation — may include parts for closely-related variants. Confirm the exact part for your serial number.
Troubleshooting
31Fault codes
| Code | Meaning |
|---|---|
| 2 | Low Oil Pressure Fault |
| 3 | Service Check Fault |
| 4 | Overcrank |
| 12 | Overvoltage |
| 13 | Undervoltage |
| 14 | Overfrequency |
| 15 | Underfrequency |
| 17 | Fuel Pump Fault |
| 19 | Governor Actuator (EFI Only) |
| 22 | Governor Actuator Overload (EFI Only) |
| 23 | Oil Pressure Switch Fault |
| 27 | Voltage Sense Lost |
| 29 | High Battery Voltage |
| 31 | Overspeed Fault |
| 32 | Low Cranking Speed Sense |
| 33 | Fault Code 3 - Fault Code 33 |
| 35 | Control Card Failure |
| 36 | Generator Set Stopped Without Fault Condition - Fault Code 36 |
| 37 | Invalid Set Configuration |
| 38 | Field Overload (Overvoltage) |
| 41 | Alternator Rotor Fault |
| 42 | Processor Fault - Fault Code 42 |
| 43 | Processor Fault - Fault Code 43 |
| 45 | Speed Sense Fault |
| 47 | Ignition Fault |
| 48 | Field Sense Fault |
| 51 | Processor Failure - Fault Code 51 |
| 52 | Fuel Injector Fault (EFI Only) |
| 54 | MAT Sensor Fault (EFI Only) |
| 56 | MAP Sensor Fault (EFI Only) |
| 57 | Overprime Fault |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.
Parts
3| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 0148-1343 | vent filter | Service part / kit | buy | |
| 56-A360-5299 | adapter | Service part / kit | buy | |
| CAN/CSA-Z240 | Service part / kit | buy |
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
| Rating | Load | L/h | gal/h |
|---|---|---|---|
| Full_load | 100% | 4.6 | |
| Half_load | 50% | 2.8 | |
| No_load | 1.6 | ||
| Prime | |||
| Standby |
Available documents
ReferenceParts manualService manual