Generac — Initial Start
Operation · Generator
From a Generac service manual covering: NP-50G, NP-50LP, NP-66G/LP, Q-40G, Q-55G/LP, Q-70G/LP. Check it applies to your exact model before use.
Applies to: Generac NP-50G, Generac NP-50LP, Generac Q-40G, Generac NP-50G/LP engine
Before you start
- Do not make any unnecessary adjustments. Factory settings are correct for most applications. Avoid overspeeding the engine.
Procedure
- Turn off all electrical loads by setting generator main circuit breakers to OFF or OPEN.
- Refer to Owner's Manual for cranking and starting instructions.
- Let engine warm up about five minutes to allow internal temperatures to stabilize.
- Inspect engine-generator for fuel, oil, and exhaust system leaks. Correct any leakage immediately.
- Check no-load voltage and frequency.
- Apply electrical loads and check operation under load. Run unit at least 30 minutes with loads applied.
- Turn off all electrical loads by setting generator main circuit breakers to OFF or OPEN.
- Let unit run at no-load for a few minutes to stabilize temperatures. Shut down engine.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- No-load frequency about 62 Hz
- No-load voltage 122-126 volts AC
Full service-parts list: Generac NP-50G →, Generac NP-50LP →, Generac Q-40G →
Source: Generac service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.