Briggs & Stratton 500 series carburetor issues


Old 06-17-12, 05:12 PM
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Briggs & Stratton 500 series carburetor issues

I saw on a thread about someone running into issues with the carburetor on this series engines!
Anybody have any information on the part number for the carburetor that cures the problem?
My brother in--law has a craftsman that he found in a dumpster & it will not stay running!!!!!!!!!!!!couldn't help myself!!!!!!!

Last edited by bearman99; 06-17-12 at 05:14 PM. Reason: funny computer thing!!!!!!!!!!
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Old 06-17-12, 05:21 PM
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You need to install a new diaphram kit, it is Briggs part # 795083 or old # 495770 also Lowe's has a kit #5083 which has the same parts.
Here we go:

Remove air cleaner, there are 2 bolts that hold things together, one on the front of the tank 3/8" and one into the block 1/2", remove these bolts, now "slowly" slide the carb/tank off the intake tube and breather tube, now tilt the tank in to release the throttle linkage and waalaa the carb/tank is removed. Check the intake tube to see if the O ring seal and plastic retainer are still on the intake tube, if so remove them and re-install them into the carb. Remove the 5 screws from the carb/tank remove carb(don't loose the spring) now spray all holes, cracks and crevases in both the carb and tank surface with brake parts cleaner, remove the main screen(looks like a thimble), now with a small screwdriver pry out the main jet(carefully) and clean it, check the O ring on the main jet for damage, if it is damaged it must be replaced, reinstall the jet, it can be difficult some times to get it to snap back in place(I use the rounded end of a screwdriver handle). Remove and clean the fuel pickup stem(not necessary if the fuel tank was clean). Clean any junk/rust from the tank. Install the diaphram on the tank then the gasket(no goo or sealer) now carefully replace the carb(the spring will try to misalign the diaphram), tighten all screws a little at a time so as not to crimp the diaphram until they are all tight. Install the carb/tank in reverse order and you are done. If I missed something one of the real mechanics will correct me. Have a good one. Geo
Old 06-18-12, 03:08 PM
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I believe my brother in-law replaced the carburetor, in a thread on 22" weedeater mowers , greynold99 said he got a carburetor through warranty & that they had re-designed the carb. that was a month ago, I was hoping maybe somebody else had this same thing & could tell me what the new improved carburetor part# is !!!!!!!!!!!rogram:

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