Mitsubushi — ‘4, Coat the gasket with clean engine oil. Air vent plug
A Mitsubushi service procedure — check it applies to your exact model before use.
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Procedure
- 5. Securely screw the governor oil filter in the
- filter bracket by hand.
Source: manual:Mitsubishi S12A2 Manual.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.