Nissan 90A fuel line

[ronboonville]

Last season I had a problem with the primer bulb collapsing. The fuel tank vent is open, but I think my hose was too flexible and was collapsing where it makes a sharp bend. So I'm replacing the line. What size should I use? 3/8, or 5/16? Also I read an article that said the bulb should be closer to the engine than the tank and be in a vertical position pumping upward. Please help!

 

[pvanv]

There are currently 2 Factory primer hose assemblies. Yes, for the primer check valves to work best, prime with the bulb vertical, pumping up.

Factory fuel hose assembly fits all 5hp ~ 90hp 2-stroke models & TLDI models. Will not fit 75/90C & 115 TLDI models. Includes primer bulb and fuel connectors.
Part #: 3B7702004M
List Price (MSRP): $74.52


After-market fuel hose assembly fits all 5hp ~ 90hp 2-stroke models & TLDI models. Will not fit 75/90C & 115 TLDI models. Includes primer bulb and fuel connectors.
EPA/CARB compliant
Part #: 99998PBA2M
List Price (MSRP): $89.13