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post #4 of Old 06-13-2013
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Re: Yanmar 3gm30f secondary filter

I use large jaw channel lock pliers and am able to loosen the flange nut without removing the hoses. You will need to bleed the air out by adding fuel to the filter sump and pumping fuel in with the air bleed screw on top open. Careful to not strip and overtighten the bleed screw. Priming the air out is slow using the hand pump lever on the fuel pump is slow so I added a hand squeeze bulb in the fuel line, which makes it quick and easy.
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