any know where i can get a fuel systom diagram for 1977 evinrude 175 v6 from thanks for any help broke nipple on fuel pump had to replace in process change fuel lines forgot correct assembley

I have the same motor. I have a manual that probably shows it. Have you searched online? I can take a pic of my motor if you need it. What part can you not figure out? I seem to remember just one hose coming out of the fuel pump that feeds all three carbs. It has two 3 way splitters on it. I am going from memory but I just rebuilt mine with new hoses this year.

yes that would be helpfull the top fuel pump broke so i need to know how the hoses goe back on from pump to pump thanks for the help if you could take a picture of both pumps and fuel line

just a suggestion I have an 82 175 johnson and took off the dbl pumps, sealed the vacuum hookups and put on an electric pump from oriellys.
get the 4-6 cyl. size and put a filter inline before the pump.
hope these pics help.

http://www.shop.evinrude.com/

Click on the parts picture on the right then the year
Will show you all about that motor

did electric fuel pump change performance

it runs like a top now, did the seafoam and synthetic oil thing and rebuilt the carbs.
compression is about 115 on all cyls. give or take 2-3#'s.
the fuel pressure is well within specs for that engine and I think it runs alot better than before.
I screwed up the pumps when I went to clean them out and my mechanic suggested the electric fuel pump.
its mounted under the cowl for safety and has a cut off switch under the front of the cowl, key activated.

how hard was install

install was easy (the mechanic did it) look at the picture, just take off the dbl pumps plug the holes for the vacuum (or run a hose from one to the other), used the threaded hole right over the fuel line hookup then ran the line to the fuel rail, just watch for kinks and be sure to put a canister filter inline (mine is at the fuel tank) to prefilter the gas.
if you look at the bottom closeup you will also see where I put a cutoff switch in so I can turn on the key without the pump running, this is also a safety cutoff.
hope this helps, post some pics if this is the way you do it

thanks for the help lot cheaper then buying new pump

plug the vaccume off old fuel pump

I am glad you got it fixed. Sorry, I completely forgot to check the thread after I offered to help out. Sounds like she is back to running good.

texastrophy did you get all done? is it running again?

i am going to install sunday ill keep posted and tell you if it works good for me thanks for all the help

installed pumpin fuel fine went to test ran fine at first then died a few time didnt want to start up finnally did got it on trailer tried again cranked fine i dont know what else to do