Yanmar 6BY/4BY Fuel Filter Bleed Sequence

[fishheadbarandgrill]

I’m about to change my primary and secondary filters. Should I change engine mounted filter, bleed then change racor and bleed? Or can I change both, then just bleed both at same time?

 

[rpmerrill]

I've never done any bleeding during the two filter change sequence.
You do know that the Yanmar bleeds itself, right?

When you turn on the ignition and don't engage the starter, you can hear the electric fuel pump run for about 60 seconds.
If you do that three or four times the filters will be full of liquid and ready to start.

As a matter of fact, this year, as a test, I didn't fill the filters with fuel before I mounted them. (Actually I forgot.)
I cycled the ignition key a couple extra times and she fired right up.

 

[fishheadbarandgrill]

Thanks. Yes, I knew that they are self bleeding. Just didn’t know if I ned3d to bleed after changing each filter or after I was done with both.

 

[Brian B]

I pre-fill each filter, oil the gaskets then install them. Follow the bleeding process in the manual and you should be good to go.