Fuel Lines on a '69 Evinrude 9.5

bradford0113

Cadet
Joined
Mar 10, 2010
Messages
19
Does anyone know the exact sizes of the two fuel lines on this motor and also where to buy them?

I was told that the pump to carb line is 5/32" and I was able to get a 1/8" line from NAPA to work well as a replacement.

However, I'm having problems with the line from the main connector to the fuel pump. I have a 1/4" replacement line from NAPA, but it seems to fit way too tight on the fuel pump and I can't even get the opposite end on the connector because of the clearance around the hole on the motor casing.

It's seems that most auto parts stores only carry high pressure lines in increments of 1/8". These high pressure lines also seem to have a thicker wall than the ones I am trying to replace. I really want to get these lines replaced before running this motor because I just cleaned the carb and fuel pump.

Any ideas?
 

F_R

Supreme Mariner
Joined
Jul 7, 2006
Messages
28,226
Re: Fuel Lines on a '69 Evinrude 9.5

Well the official answer is to use the correct OEM hose from an Evirude dealer. The large one is part number 303617 from www.marineengine.com, a 3ft piece is $10.

Having said that, I have been buying my hose from Advance Auto Parts. 1/8" and 1/4" should do it. You don't need the high pressure stuff, and besides it is too stiff and thick. Again, having said all that, I haven't had occasion to re-hose a 9.5. But it has worked on other motors for me.

EDIT: I happen to have a piece of the OEM hose. If you are interested in it, send me a PM.
 

dew2

Senior Chief Petty Officer
Joined
May 6, 2010
Messages
674
Re: Fuel Lines on a '69 Evinrude 9.5

If you dont take F_R up on his offer,Just go to the nearest lawnmower,small engine repair shop.
 

bradford0113

Cadet
Joined
Mar 10, 2010
Messages
19
Re: Fuel Lines on a '69 Evinrude 9.5

Thanks guys... I just picked up some 1/4" hose from Advance Auto to try out tonight. I got the regular fuel hose and not the fuel injection hose, so it should fit better. I'll let you know how it works out and if I'm still concerned with it, I might take you up on your offer, F_R.

I did forget to ask another question... If there is nothing connected to the quick connect on the outside of the motor, what prevents water (or other things) from getting into the fuel lines? I am asking becasue when I took the cover off of my fuel pump, I found a tiny little dead worm and a rather large cacoon just behind the screen in the fuel pump. The only way it could have gotten in there would have been to enter one of the small holes in the quick connect and travel all the way up the line to the pump. When it got to the screen, that's where it decided to build its nest. This made me think that if the bug got in there, what's to prevent water from also getting in?
 
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