Mercury 2.5 carburettor

[onenyala]

Outboard has just died. Spark OK but lots of unburnt fuel coming out of the exhaust as I try to start it. It is not choked. I have spoken to a outboard service company who almost categorically says it is a caburettor problem probably the jet blocked.
Anybody out there with a service manual who can point me in the right direction so that I dont alter the carb needle settings


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[aztec]

you'll be fine, pull it apart don't take the needle out of the slide, you'll probably find all that's wrong is the needle valve, this is operated by the float (make sure it does!) at worse you'll need a new one, but it's more than likely sh*t preventing it from closing... clean it out, refill wiv fuel. and try it.

after they've been flooded they become hard to start due to plug wetting... one way to overcome this is by heating the plug end over a gas flame, this gives it a chance to burn off the residual fuel.. don't burn your fingers, and good luck. steve.

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[snowleopard]

remove the float chamber. it will come out of the bottom of the casing with a bit of wiggling. clean out and reassemble,

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[onenyala]

Thanks Aztec & Snow Lepoard
Since posting I took the carb bowl off and after spending a few minutes on the garage floor locating all of the bits I blew everything out with a bike pump and cleaned the ess aitch one tee out put it together and surprise surprise it works again!!

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[Baltimore_Bill]

it must be something to do with the time of year - I had to do exactly that on my Yamaha 2 last Sunday evening.

Crud in the Ballcock.


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