Yamaha 8hp 2 stroke 2005 carb problem

[mike viljoen]

Hi
We are on a sailing yacht and our dingy's outboard has packed up after non-use for a few months.
Its a Yamaha 8hp 2005 series # 8CMH/6N0S.1011590/N. Two stroke.
It was impossible to crank over- I had put "StoreOIl" in cylinders and it appeared seized up- and couldnt pull cord.
So I took covers off the flywheel and used a large wrench to turn over- eventually loosened up and started engine.
THEN it wouldnt idle or hold revs- as soon as throttle back it would stop completely.
I dont think related to above initial problem.
So changed spark plugs and fuel filter and checked fuel delivery- all seems ok- still the problem.
So I guess next is the carburettor- however I can't determine which needle is which- low high or how many turns to reset.
Can anyone locate a diagram or manual page with instructions.
Otherwise any assistance will be appreciated.
Thanks
Mike

 

[justintime]

carb and fuel pump will need to be rebuilt

i will post pics here soon

shoot me email for manual pics

 

[Supercarver]

I have the same motor. My problem is no water coming out of the weep hole. I checked the impeller and it seemed fine. I tried flushing with a pipe cleaner and white crumbs keep coming out along with drops of water. Can anybody suggest a solution?
I left off with seeing exhaust fumes coming out with it spitting water.