Generac QT 1.6L 25kW — Preparation for Start-up
Installation · Generator set
For the Generac QT 1.6L 25kW, from the Generac owner's manual.
Applies to: Generac QT 1.6L 25kW, Generac In Line engine
Before you start
- Before working on the generator, ensure the AUTO/OFF/MANUAL switch is in the OFF position and the 120VAC supply to the battery charger is switched OFF.
Procedure
- Ensure that the 120VAC circuit breaker to the battery charger is open.
- Remove the fuse from the control panel (15 Amp ATO fuse).
- Connect the battery cables to the battery. Attach negative battery cable last.
- Close the 120VAC circuit breaker to the battery charger.
- Measure the voltage at the battery before and after the charger is turned on.
- Verify all AC electrical connections are tight at the circuit breaker and transfer switch.
- Check all hoses clamps fittings for leaks or damage.
- Open the valve to the engine fuel line.
- Bleed the fuel system of air (necessary for long fuel lines).
- Open the generator main line circuit breaker.
- Connect a manometer to the gas line and record the static pressure.
- Insert the fuse into the control panel.
- Move the AUTO/OFF/MANUAL switch to the MANUAL position. The engine should now crank and start.
Tools required
- Manometer Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Static gas pressure must be as listed in the Specifications
Full service-parts list: Generac QT 1.6L 25kW →
Source: Generac owner's 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.