1986 yamaha 4hp fuel pump

[mercuk]

Hi all, just taken the fuel pump for the above outboard engine (integral fuel tank model) and when taking out fuel pump, two little springs and a small disc came out.

Now my question to all you wonderful people out there is does anyone have a parts diagram for this said fuel pump and location of the two little springs and disk?!!!

I have tryed looking on here and on net, but no joy and I'm to tight to pay for a download manual lol..

Any help would be very appreciated as this is the first yamaha I've ever worked on...:redface: I'm usual a kiekhaefer man....

Anyway, thanks in advance y'all.

 

[mercuk]

Re: 1986 yamaha 4hp fuel pump

Right,
Can seem to make any sense out of this. Got the diagram listing here: http://www.**********/parts/search/Yamaha/Outboard/1989/4SF/INTAKE CARBURETOR/parts.html

The parts I'm interested in is listed as number 29+30.

Now I got these and know exactly where they go, however the was second spring indentical to part number 29 that came out of there at the same time........

I'm normally pretty good with outboards and I can't fathom out why or where the second spring came outa there.. As far as I'm aware it's not even listed in the diagram....

It DEFINATELY came from there and this engine has NEVER been messed about with as I bought it from the original owner...

The only possible thing I can think of is that the second spring went on the other side of the diaphram as well.....

Got to be someone out there that has seen this type of fuel pump before....:redface:

 

[mercuk]

Re: 1986 yamaha 4hp fuel pump

Stupid filters have stopped the link from working...

Just google what I posted and it comes up with it still. Top one one menu

 

[mercuk]

Re: 1986 yamaha 4hp fuel pump

143 views and not one person has helped out. Thanks a bunch people. Last time I bother to post in this section.

 

[raczekp1]

Re: 1986 yamaha 4hp fuel pump

i dont know how yamaha pumps work, but if i were you i would install mikuni universal fuel pump for 10 bucks and forgot problem

send me email : raczekp1@o2.pl

will resend you pdf file with your pump