Volvo Penta — Replacing filter elements, switch-over type filters
Maintenance · Switch-over fuel filters (classified engines)
From a Volvo Penta service manual — check it applies to your exact model before use.
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Procedure
- Turn the three-way cock to position C.
- Open the air-venting screw for filter housing no. 1 and drain the fuel.
- Unscrew the tightening nut, lift off the cover and the filter element.
- Rinse out the housing with clean diesel fuel, tighten the draining plug and fit a new element.
- Fit a new gasket and cover; loosen the filler plug and fill the housing with diesel fuel.
- Turn the three-way cock to position A and run the engine a few minutes to air-vent.
- Turn the cock to position B and replace the element in housing no. 2 in the same way.
Source: Volvo Penta 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.