any tricks for leaky carb seats?

[jethrob]

I’m having trouble with getting a mid 70’s style 40 HP Mercury carb to quit leaking gas out of the carb. Tried multiple needles. I’ve been looking for a set of carbs for a couple of months and about to give up and junk the motor.

Anyone have a trick for fixing the seat on a carb?

[retiredoz]

Maybe your float’s not floating ?

[Doug Wilson]

could be the float is too heavy and not floating or the seat the needle is going into is bad.

Doug

how is it motors multiply when the garage lights get
turned off?

[dave-bernard]

did you set the float height correctly call me 1 914 310 7086.

[billw]

The black, foam floats can get gas-logged and heavy, sometimes. New ones are hollow and white. Make sure the little spring is present, on top of the float, too.

Also, if running in a tank, make sure it’s not tilted too far forward. Those side bowl Tillotsons can’t take a joke, that way.

Long live American manufacturing!

[mercuryman]

I use metal polish on Qtip to polish the seat.

[Author]

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