Craftsman Marine — Remove / fit the fuel filter
Maintenance
From a Craftsman Marine owner's manual covering: CM4.33, CM4.42, CM4.52. Check it applies to your exact model before use.
Applies to: Craftsman Marine CM4.33, Craftsman Marine CM4.42
Before you start
- Do not smoke when working at or around the fuel system and avoid open fire.
Procedure
- Close off the fuel supply to the engine.
- Remove the entire filter with the aid of a special tool; collect any remaining fuel and dispose of it correctly.
- Clean the surface to touch the engine before fitting the filter and grease the rubber ring with clean engine oil.
- Fill the filter with clean diesel fuel.
- Position the filter against the filter housing and tighten it with one half to three quarters of a turn.
- Clean the filter of the fuel lift pump and reopen the cock of the fuel supply.
- Bleed the fuel system.
Tools required
- Special filter removal tool Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Tighten the filter one half to three quarters of a turn; replace after the first 50 hours of service
Full service-parts list: Craftsman Marine CM4.33 →, Craftsman Marine CM4.42 →
Source: Craftsman Marine 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.