Generac — Fuel Pump Removal and Assembly
Repair & overhaul · Fuel supply system
From a Generac service manual covering: CAC478, CAC480, SQR480. Check it applies to your exact model before use.
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Procedure
- Remove two M8 lock nuts.
- Take out the fuel pump.
- Remove the fuel pump sealing gasket.
- Pull out the push rod.
- Remove the studs of same length.
- Soak the push rod in engine oil or pour engine oil into the rod hole and install the push rod into the hole.
- Screw the studs into the threaded holes and tighten with nuts.
- Install the fuel pump with the manufacturer mark and part number forward.
- Tighten the lock nuts to 14-18Nm.
Tools required
- Torque wrench Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Push rod to hole gap: 0.035-0.055mm
- Fuel pump lock nuts: 14-18Nm
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.