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Old 11 March 2014, 17:44   #1
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Correct fuel line for my Yam 85 2 st?

Google says 5/16" (or 8mm in new money). Is this right?

Also my new backup fuel tank has a barbed connector on it.
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I assume I have no alternative but to have the yamaha clip at one end of the line and the other permanent connected to the tank?
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Old 11 March 2014, 17:50   #2
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You could put a tail and quick release fitting on the back up tank so you could just connect in to it.
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Old 11 March 2014, 18:02   #3
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Yeah, thing is the main tank is built in so there is no quick release on the tank end of the current line. I did think about putting one in on the north side of the water seperator but i don't want to start introducing more points of potential failure/contamination into the system.
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Old 11 March 2014, 18:07   #4
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I've also got a main tank under the deck but have managed to get a couple of Barrus tanks for extended range, what I have done is made up a fuel line that connects into my water seperator via a quick releases coupling as the filter has the option of two inputs.

If you go along those lines you will need to put an inline fuel tap in the main tank hose to isolate it.

It's pretty straight forward.
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Old 11 March 2014, 19:04   #5
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I get you. Don't think my filter has the option of twin inputs, so my only option would be a bayonet on a tail leading to the filter, so I can connect my chosen fuel source to that.

Do you know what diameter hose i need to be going for?
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Old 11 March 2014, 20:01   #6
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Quote:
Originally Posted by Clamchowder View Post
I get you. Don't think my filter has the option of twin inputs, so my only option would be a bayonet on a tail leading to the filter, so I can connect my chosen fuel source to that.

Do you know what diameter hose i need to be going for?
Measure your connectors-aftermarket ones often use bigger hose sizes.
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Old 11 March 2014, 20:09   #7
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KK. Was hoping to be able to order before going over this weekend. Should have measured last weekend but forgot.
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Old 12 March 2014, 03:07   #8
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Pretty sure i used 10mm id. 3/8"ish in old money. BOUGHT it very cheap from a small motor factor
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Old 12 March 2014, 03:08   #9
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Sorry that was for the 90 tohatsu
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