Jiffy mo 30 leaking gas

[Tripjorgen]

I have an 85 jiffy mo 30. I had a new carb put in 2 years ago.  This year I have noticed gas leaking out from the exhaust port.  Just sitting there the inside of the exhaust port is wet with gas but when it's running I notice gas dripping from the exhaust port.  What would cause this?

[Fisherman 1]

Most likely the needle valve is not closing 100% against the seat.  It's a maintenance item,  some have to be every few years.  Mines gone about 5 years and holding.  Not a hard job,  drop the bottom of the carb, 4 torx screws, carefully remove diaphram(pay attention which side is up).  Remove the small screw over top of the bar that holds the little spring and "flipper" , the needle is about 1/2 inch long,  The rubber seat("O" ring) is in there.  Again pay attention, it has 2 sides.  Replace both, reassemble the rest and off you go.

[Tripjorgen]

Thanks. I'll give that a try

[Dags Bait Maine]

Thanks. I'll give that a try

x2, the diaphragm is likely stretched out/distorted. before removing try pushing up on it ever so slightly, if it goes up and down its probably ok just swap out the diaphragm and gasket.

[lakerman]

had mine do same thing, I replaced diaphram and cleaned carb, now gas leaks out exhaust and it doesnt run after starting 1 time, will not start again. Only thing i didnt do was replace seat where the neele goes up in carb, could this be it ?

[Fisherman 1]

Very likely, pay attention which way the seat goes in,  one side has circular ridges, the other side is smooth.

[lakerman]

got it, never put o-ring into new screw for needle seat, now shes good again