Fuel line length: how long is too long?

[hc803]

Would like to move my 6 gal tank to the front footwell of my 12ft Monark. This would require a new longer fuel line and reading the posts on here I need to replace my Attwood line asap before it starts breaking down! My question is: would there be a fuel delivery issue with the length being ~10ft from the front of the second bench seat to the 8hp Johnson?
Thanks.

 

[gatorglenn]

Try it. Shortening it until the fuel filler stays full at WOT is what I always done. The smaller the fuel pump the shorter the hose needs to be


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[Johnny]

ensure the squeeze bulb is hanging as vertical as possible. (with arrow up).
ensure all clamps are tight and don't leak air.
ensure any of the line you re-use is clear of any kind of internal delamination.
ensure the new line is SAE J1527 compliant (available at your auto parts store).

 

[Pappy]

Pay close attention to the bulb at WOT. If there is too much of a restriction due to line length you MAY see the bulb start to collapse.

 

[WALI4VR]

I ran both an old two line 18hp line and a single line 40hp with 14 ft of hose and never had a problem.

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