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Old 06 February 2016, 17:35   #1
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Country: UK - England
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Fuel filter & water separator?

Does anyone use a fuel filter/water separator when using removable plastic tanks, or are they generally considered to be clean enough without? There is a fuel filter on the outboard already (standard 70hp 2 stroke Tohatsu).

I have no room for an auxiliary engine, so I need to make sure it's as reliable as possible.
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Old 07 February 2016, 01:52   #2
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If you don't mind the extra plumbing, and have someplace to mount it, I'd say do it. The canister has a much greater filter area, so will take a lot more contaminant before plugging. Plus you get water rejection as well.

jky
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Old 07 February 2016, 03:33   #3
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Yep, always used them, mounted it on the transom and plumbed it in using the same hose.
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Old 07 February 2016, 03:46   #4
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Yep - agree with the other two here - these are well worth the extra plumbing especially if your Rib is doing beach landings or anything else that might put a lot of sand / grit / detritus in your boat. Tiny grains of sand easy work their way in to bayonet fittings while your changing tanks in my experience. The water separation is a consideration too.

I would struggle to suggest any down sides to fitting a pre-filter...
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Old 07 February 2016, 03:58   #5
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Thanks chaps. Any recommended makes?
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Old 07 February 2016, 04:17   #6
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Thanks chaps. Any recommended makes?
I'd go for the make of your engine if they make one. Chances are they will recommend one if they don't.

I use Suzuki ones, but then so have the last two engines been, can't remember what was on the Mariner.
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Old 07 February 2016, 04:18   #7
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Thanks chaps. Any recommended makes?
Quicksilver/Racor, that's what I use. Not essential you go for clear bowl version. However it does have the release valve so you can drain fuel.

Grease the filter thread before fitting onto the filter head. Over time these things sieze.
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Old 07 February 2016, 04:22   #8
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I'd go for the make of your engine if they make one. Chances are they will recommend one if they don't.

I use Suzuki ones, but then so have the last two engines been, can't remember what was on the Mariner.
Tohatsu make filters, 10 micron filtration, etc. Won't be cheap, and will probably be order only.
More details here: Tohatsu parts
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Old 07 February 2016, 16:10   #9
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Top stuff, thank you.
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Old 07 February 2016, 20:30   #10
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I use Racor for my Yamaha engine. I like being able to see if any water is on the bowl.

jky
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