Cummins/Onan — Cylinder Head Gasket - Replace (SRT 02-3AA)
Repair & overhaul
From a Cummins/Onan service manual — check it applies to your exact model before use.
Browse Cummins/Onan generators & specs →
Procedure
- Disconnect and connect battery cables
- Drain and refill engine fluids
- Remove exhaust manifold and intake manifold
- Remove coolant pump drive belt and pumps
- Remove fuel injection supply and return lines
- Remove valve cover rocker assembly and pushrods
- Remove cylinder head and gasket
- Clean carbon, torque cylinder head, adjust valve lash, test run unit
Specs & values
- Standard repair time 6.0 hrs
Source: Cummins/Onan 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.