Although overhaul/rebuild carburetor kits are available, it really does no good to rebuild them and install a new fuel inlet valve because the float valve seat is made of soft brass, which erodes with use due to microscopic particles of dirt/debris that pass through the filtering material in the fuel filter, and in most Walbro carburetors, the seat is not replaceable. They were manufactured back in the day when most business owners took pride in their products and offered their customers a quality product.īut the newer Walbro carburetors, especially the ones that come on recently-built aluminum block small air-cooled engines, are notorious for leaking gas after several years of use. Most older Walbros are worth rebuilding, because the float valve seats are made of hardened solid bronze, which is actually harder than cast iron. The older Walbro WHG #52, #60 and #64 carburetors are reliable and they seem to last a long time before requiring service. So I started following his advice and haven't had a leaky walbro in years. To further substantiate his comments a snowblower usually does not have a fuels filter. Only when i read the excerpt that i attach below from Brian's Miller site did I understand the problem and why it happens. Those carburetors used to drive me insane also with the same problem. I have some like the one in photo but no rubber tip.
