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Old 29 June 2015, 18:42   #1
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Country: UK - N Ireland
Boat name: Still deciding
Make: Avon Searider
Length: 4m +
Engine: Tohatsu M40C
Join Date: May 2015
Posts: 92
Outboard fuel line size?

Can anybody tell me what fuel line size I need to get for a Tohatsu M40c?

I'm assuming most outboards of this size would maybe use the same?
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Old 29 June 2015, 19:18   #2
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At a guess, 1/4" ID should be fine. My F115 uses 3/8" ID. If you already have the fuel connectors, simply measure the barbs. If you don't, get them first, as they'll probably determine your hose size.

jky
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Old 30 June 2015, 20:09   #3
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Country: Canada
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Engine: Merc/Minn Kota
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Thicker Inside Diameter the better. Also add another inline fuel filter.
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Old 01 July 2015, 02:35   #4
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Country: UK - England
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Make: Aerotec 380, Y-Class
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Engine: Mercury Mariner 15hp
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8mm (5/16) is a pretty good idea and will suit any engine. Use decent SS hose clips. As above I also added an additional inline filter by the tank end, only a few quid each on eBay and easy to change each year.

This is the hose I got below to re-do my lines, the Mercury original hose is poor quality and has a plastic liner that is a PITA when cutting as it splits and blocks up the bore when pushing in fittings etc.

http://www.ebay.co.uk/itm/2213113034...452%26_rdc%3D1
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Old 02 July 2015, 03:15   #5
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Engine: Merc 60 Clamshell
MMSI: 235068449
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I swapped the connector from suzi to yam on a 1/4" hose when I moved from a 25 to a 55 hp.

With The 1/4" hose the 55 was starved at WOT so if you have no components yet I would go for 3/8 hose and fittings.
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Old 02 July 2015, 10:20   #6
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55hp? WOT is what, maybe 8gph? I'm surprised the 1/4" wouldn't flow that.

jky
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