I have a Yanmar YSM8 that needs its
fuel filters changed. What I’d like to do is go through the steps as I understand them and get some input from members.
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Here goes:
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1) Cut off the
fuel at the tank.
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2) Place cut off gallon milk carton beneath filter.
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3) Clean around primary filter.
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4) Remove water separator and filter.
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5) Clean thoroughly and put old filter in ziplock bag. Put in 5 gal bucket.
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6) Inspect O-rings. Replace if necessary.
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7) Install new filter. Do not replace
fuel as this might introduce impurities downstream of the filter.
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8) Open bleed screw.
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9) Turn
fuel back on.
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10) Use thumb lever
pump to fill filter and bleed air.
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11) Close bleed screw when no more air comes out.
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12) Run engine for 10-15 minutes to insure that engine was properly bled.
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Repeat process for secondary filter.
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What did I leave out? If I follow these steps, is it all right to fill up filter with fuel since any impurities will be caught by the secondary filter – then just not fill up the secondary filter?
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Thanks,
Dick
Dahlgren, VA