Specifications
| Frequency | 60.0 Hz |
|---|---|
| Standby power | 4 kW |
| Prime power | 4 kW |
| Voltage options | 120/240 V, 120 V |
| Phase | 1-Phase |
| Rated current | 37.5 A |
| Power factor | 1.0 |
Maintenance & consumables
for the V-TWIN| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Oil filter | PH3614 | 100 hr | Amazon eBay $7.50 PartsGeek |
Common questions
What is the power rating of the Generac NP45G?
The Generac NP45G is rated 4 kW standby.
What engine does the Generac NP45G use?
The Generac NP45G is powered by the V-TWIN engine.
Troubleshooting
6Symptoms & remedies
| Symptom | Remedy |
|---|---|
| ENGINE WON’T CRANK | TEST 1 - CHECK 5 AMP FUSE GOOD: REPLACE FUSE OR REPLACE TEST 2 - CHECK BATTERY GOOD: RECHARGE TEST 3 - CHECK STARTER CONTACTOR BAD: REPLACE |
| ENGINE CRANKS, BUT WON’T START | TEST 8 - CHECK FUEL SHUTOFF VALVES GOOD: FILL TANK OPEN VALVE(S) CHECK FILTER(S) TEST 11 - CHECK ENGINE IGNITION SYSTEM BAD: REPLACE OR REPAIR TEST 12 - CHECK MODULE BAD: REPLACE OR REPAIR TEST 14 - CHECK ENGINE CONDITION BAD: ADJUST, REPLACE AS NECESSARY |
| ENGINE STARTS, SHUTS DOWN WHEN START/STOP SWITCH IS RELEASED | TEST 16 - CHECK ENGINE OIL LEVEL GOOD: REPLENISH TEST 17 - CHECK OIL PRESSURE SWITCH GOOD: REPLACE OR BAD: REPLACE TEST 18 - CHECK OIL TEMPERATURE SWITCH GOOD: REPLACE OR BAD: REPLACE |
| ENGINE STARTS HARD, RUNS ROUGH | TEST 12 - CHECK CARBURETION GOOD: ADJUST, REPAIR AS NECESSARY TEST 14 - CHECK ENGINE CONDITION BAD: REPLACE OR REPAIR |
| ENGINE WON’T SHUT DOWN | TEST 16 - CHECK WIRE #18 GOOD: REPLACE OR REPAIR BAD: REPLACE |
| LOW OR NO A-C GENERATOR OUTPUT | TEST 20 - CHECK LINE BREAKERS BAD: REPLACE OR REPAIR VOLTS/FREQUENCY BOTH GOOD: DISCONTINUE TESTS VOLTS/FREQUENCY BOTH HIGH OR LOW: TEST 23 - CHECK LOAD VOLTAGE AND FREQUENCY TEST 24 - ADJUST ENGINE GOVERNOR |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.
Available documents
Service manual — 075239 (Generac)Service manual — 75239 (Generac)Service manual — 75239 (Generac)Service manual — Y78800 (Generac)Service manual — Y78800 (Generac)