Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) Discussions

I need to clean the bowl on a 7 hp Briggs updraft engine (80's vintage), however the gasket around the top of the bowl is not letting me remove it. I did already take out the long brass jet tube. Any idea what's holding this together? Model 170402 Type 2155 Date 84062812 I purchased the Carburetor overhaul kit (394693) however I the old paper gasket just does no want to come free. If I whack it any harder I fear that I may break something. Is there a secret to getting these apart? This engine runs a 24" Yazoo made for Troy-Bilt called a "Pro." The Yazoo and this engine have not been run in 8 years. The carb jets were pretty gummed up and the paper gaskets are very dry.

Soaking in gas over night did not work. But brake cleaner did the job in about 20 minutes.

Those carbs are a big pain, they start easy with the updraft design, but the cast aluminum bodies rot out if they get moisture in them for too long. the whole thing has to be taken off to work on it or clean it out. and the carb ahs to be split in two to flush the thing out or change the needle and seat. or to adjust. I always throw a new needle and seat when I take them apart.. and set it in a vise with fuel flow to watch it for leaks before reinstalling on the engine.... also a good idea is to install a fuel shutoff if the fuel line does not have one, that way you don't end up with a gas puddle under where you park it. Friiy