I know what you mean...30Year;
I tried to explain that bowl to someone the other day and all i got was the "deer in the headlights" look. When you tell someone the easiest fix is buy part number xxx and snap the old on off and the new one on and you're done, just doesn't sound right to a lot of people(I being one of them the first time I saw it). Have a good one. Geo
Since you have worked on so many of these I need help. Recently rebuilt the whole engine and the carb...now it won't run. I get air flow through the carb when I blow on the fuel inlet and put finger over the priming hole on the aluminum body...the mower will run but it floods like crazy after I stop it...like is siphoning or something...when I try to restart after I have been running I can see big white puffs of gas coming out of the exhaust...and it smells. What is going on there. I added an O ring to the top of the plastic inlet pipe under the aluminum body based on a suggestion from another user. At least the mower ran after this but it really flood like crazy now. Please help if you can.[/I] Everything else in the carb is new all o rings ect.Pyro,
If they are not sealing, then you did not have the alignment pins lined up in the body. I have literally worked on hundreds of these carburetors and never have had to file a single one!
I bought the rebuild kit from Sears which is where the lawnmower is from. The vent hole really seems to be clear...As far as the extra O ring I can remove it....when I put it there the mower ran much better however. I can remove it. I don't see any fuel coming out the of the bowl and I do think the float is working. One other curious questions. Does in make a difference when you put the plastic inlet back into the bowl which way it is turned. One side has 2 holes on it and the other has one. Do these need to be oriented in any particular way?When you rebuilt the carburetor, did you use OEM parts? Many of the parts and kits available aftermarket are for the aftermarket carburetors that are now available, and not meant to work with the OEM carburetors.
There is not supposed to be any o ring between the nozzle and carburetor body, remove it. That is probably not the cause of any flooding issue, but could prevent the bowl from properly seating against the gasket and carburetor body. Check the inlet needle and seat, and the float to make sure it does not have any fluid in it. Make sure the float pin is snapped in place on both sides when installed, and finally check and make sure the float bowl vent is not restricted.