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Old 22 May 2012, 14:37   #1
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Just got myself a fuel filter to place in the fuel line for my Honda 40 as all its got at the moment is the tiny one under the cowling.

Now i know most people attach them to their transom but for neatness im thinking of putting it on the back of the bench seat so the fuel line can come straight from tank to filter then back into the conduit to engine. Nice and neat.

If i put the filter on the transom im gonna end up with loose fuel line in the back and won't be able to hide it in the conduit as it will kink.

Im guessing it doesn't matter where it goes and its just personal choice?

Also fuel primer after filter or can i get away with it before which saves moving it?.

Any thoughts.

Thanks.

Ps black dog marine are superb. Ordered yesterday arrived today with my ribnet discount.
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Old 22 May 2012, 15:43   #2
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Primer bulbs go after the filter not before.
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Old 22 May 2012, 16:54   #3
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Primer bulb before filter is better as you can still force fuel through the filter if it gets clogged up. After the filter makes pulling fuel through difficult.

That's the way I always have done it
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Old 22 May 2012, 17:02   #4
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There have been threads about this before. My fuel filter is mounted in the console. However, I made sure the primer bulb was between filter and engine as I experienced problems once before when it was the other way around. I don't know how it makes a difference, but it certainly created a problem for me.
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Old 22 May 2012, 17:10   #5
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I've always had bulb before filter. Current config is:- tank, bulb, filter (both in console), under cowl filter, engine. No problems. Bulbs are better at pushing than pulling fuel.
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Old 22 May 2012, 17:50   #6
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Originally Posted by Pikey Dave View Post
I've always had bulb before filter. Current config is:- tank, bulb, filter (both in console), under cowl filter, engine. No problems. Bulbs are better at pushing than pulling fuel.
They really suck at pushing air out of the way though. Maybe it doesn't matter in a Honda 40 (carbs?) But it does in my fuel injected YamF60. The less tube I have to have downstream air in the better.
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Old 22 May 2012, 18:01   #7
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On my last boat (Zodiac Pro), I mounted the fuel filter on the transom. On the Ribcraft, it's mounted in the console.

My set-up is fuel tank > filter > primer bulb > engine.

Never had an issue with the fuel starvation, and the primer bulb always goes hard prior to ignition. Only issue I've ever had was forgetting to vent the fuel tank which is easily remedied.
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Old 23 May 2012, 00:54   #8
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Quote:
Originally Posted by captnjack View Post
They really suck at pushing air out of the way though. Maybe it doesn't matter in a Honda 40 (carbs?) But it does in my fuel injected YamF60. The less tube I have to have downstream air in the better.
That's usually due to the orientation. I had problems as the original fuel hose wasn't long enough to orientate the bulb vertically. I lengthened the hose slightly & got the bulb vertical, no problems now. The problem with bulbs is that they only suck (no pun) with the force that the bulb is inclined to return to shape after you've squeezed it. If you have a long run of empty hose between tank & bulb, you have to pull fuel all the way from the tank to the bulb before pushing it downstream to the engine, in effect you are using the bulb as a vacuum pump, which they ain't.
All IMHO of course
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Old 23 May 2012, 04:09   #9
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Thanks for the replies . I'm getting the feeling its almost a 50/50 split at the moment with everyone having different ways of doing it. I'll have a play around with it today and tomorrow and see which is best in my set up to keep it all tidy but ensuring the bulb is kept vertical.
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Old 23 May 2012, 11:17   #10
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Primer bulb before filter is better as you can still force fuel through the filter if it gets clogged up. After the filter makes pulling fuel through difficult.
Do you really want to force fuel through a clogged filter? I realize it's likely an emergency action, but you'd be putting all the delicate stuff in the motor at risk by forcing it through known contaminant. Better to bypass the clogged filter than risk freeing all the trapped stuff, I'd think.

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