Generac G-Force 400 Series / RTG16EZA3 — Checking Valve Clearance
Maintenance · Valve train
For the Generac G-Force 400 Series / RTG16EZA3, from the Generac owner's manual.
Applies to: Generac G-Force 400 Series engine, Generac G-Force 800 Series engine, Generac G-Force 1000 Series engine
Before you start
- Allow engine to cool before checking valve clearance.
Procedure
- Close fuel valve and disconnect battery.
- Remove spark plug wire(s) and spark plug(s).
- Remove four valve cover screws and discard gasket.
- Verify piston is at TDC of compression stroke.
- Check clearance between rocker arm and valve stem with feeler gauge.
- Install replacement valve cover gasket.
- Install valve cover; tighten fasteners in a cross pattern.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Valve clearance 0.002–0.004 in (0.05–0.1 mm)
- Valve cover torque 80 in-lbs (10 kW); 60 in-lbs (20–24 kW)
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.