Replacing Racor Filter

[Don]

I have a 2 cylinder Yanmar in an 89 H30. Can I replace the primary racor filter, fill the bowel and put it back on and only bleed at the secondary filter before the injection pump without bleeding the entire fuel system. Very difficult to get a wrench on the injector pump, injectors or return line. Can the engine be bleed from only one of each of those in lieu of both. Owner's manual and Yanmar service manual indicate different sequence, which is right.

 

[Tim]

Racor Filter

Don: You will probabably have to bleed at least up to the fuel manifold (where the fuel line splits to head for each cylinder). In the 13 years I've owned my H31 (installing a new filter each year) I've had to totally bleed the entire system each time. Yes, it is a pain in the a## especially since it requires two people- one to bleed and the other to pump at the filter. I haven't tried it yet, but a friend who has an O'Day 34 (w/ Westerbeake) installed an automotive electric pump in line downstream of his Racor filter and uses it to provide "head pressure" to the manifold, making the bleeding process a single person operation. Not the solution you were looking for, but I hope it helps. Tim

 

[red coles]

squeeze bulb

I have same engine and I installed an outboard squeeze bulb between primary filter and yanmar engine filter. I find I only have to loosen injector pump beel screw,pump bulb 'till clear fuel flows and I'm done. I have neve bled at injectors ,unless I had to remove High pressure lines.good luckred