1985 merc 9.8 walbro WMB3 fuel pump question

[green4themoney]

hey i had a question about a rebuild kid for a fuel pump, the quicksilver kit comes with everything needed but it appears to have 2 gaskets with 2 check valve nipples on them.... but they are made out of different materials..... it just seems weird theyd make a "double" layer check valve.

 

[green4themoney]

parts 6 and 21

 

[tommarvin]

I see three gaskets, 6 then 21 then 20,
gasket 6 and 21 look the same gasket 20 looks different .
If gasket 6 and 21 are exactly the same use the gasket with the harder material,i dont know its just a guess, i agree never seem two gaskets together, that makes me think this rebuild kit is for many different carbs.
Lets not overthink this, use the gasket that matchs the best.

 

[green4themoney]

20 goes on no matter what, yeah 6 and 21 in the kit appear to be diff materials..... one is like the brownish harder type so i guess just use that cause i dont see why youd have to double up check valves? lol thanks for the reply

 

[Scott Danforth]

quicksilver kit or sierra kit?

 

[racerone]

Just use both !!-----Put the rubber on the ports as it will seal better.----The brown one gives it better " spring " action.-----See them with both all the time.

 

[green4themoney]

its a quicksilver kit btw and yeah ive read a few diff things.... one mechanic said the brown was for ethanol bleded fuel and the rubber option was for E0 only.... dont know the merit to that but i run ethanol free (shell 91) anyways. i will try with both as you said racerone and i can always take one out if theres an issue but if youve seen em with both before i should be alright! the reason i need the kit is my motor freshly rebuilt (everything but the fuel pump) runs like a top but randomly dies like could be 15 minute intervals.... than as its dying i squeeze the bulb and it comes back to life... lol

 

[racerone]

I just picked up one of those 9.8 models from a dealer.-----They thought it needed reed valve work.-----What I looked for and found was ---#1 broken throttle lever on top of carburetor.---#2 missing o-ring on top of driveshaft.----# 3 Upper crankshaft seal popped out.---# 4 broken impeller on water pump.-------Nothing wrong with the reeds as I suspected.-----Easy fix