Re: Carb Rebuild - Float Valve Help

Posted by Paul in Mich on September 20, 2004 at 06:32:01 from (66.188.26.29):

In Reply to: Carb Rebuild - Float Valve Help posted by Jerry Ward on September 19, 2004 at 16:04:53:

Jerry, I had the same situation just a week or so ago, and I tried everything from heat to vice grips to sawing a slot to the opposite side of the existing one, but nothing short of drilling the old seat worked. The hole is centered so unless you have distorted the hole, the drill will follow the center. The outer threads of the seat are 3/8 fine, so you can go up to a 5/16 drill size, but I suggest starting out with a drill that will drop into the hole and hand drill through the seat first. Then go up a size and drill incrementally until you get to 5/16. At that point all you should have left is a very thin wall and the threads which you can pick out in just a couple of pieces. The thing to remember and the reason I suggested working up incrementally to the largest size drill is because the seat being brass will cause the drill to grab very easily and snatch the part out of your hand or worse. Its an "easy does it" task, but it worked fine for me with no damage to the top of the carburetor.

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