NotTaR of small Gasoline Engines and Rotary Lawn Mowers : Notes on Briggs & Stratton tune-up      
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Notes on Briggs & Stratton tune-up

(This assumes foam type air filter that needs have a film of engine oil in it to trap dust.)

(From: (Willjim@gte.net).)

Once the air filter is saturated it must be wrung out. I typically place them in a paper towel and squeeze. Then possibly a second paper towel. No oil should be dripping out of the filter when gently squeezed. Chilten's B&S engine section says to simply squeeze the filter of excess oil - no mention of a paper towel, etc.

In adjusting the carburetor, Chilten says about 1-1/2 turns but 2 turns is my standard.

I get the engine running first - warm it up to general operating temp. No applied choke, air cleaner installed. Adjust the main jet if you can get it to run at rated speed - preferably under load (turn in to the lean studder, out to the rich studder then back in about 1/2 way between these extremes). Then adjust the idle, at idle - at no load - using the same operation as the main jet. You may then go back and repeat/refine the process a second time as the idle adjustment may affect the main a bit.

For the 92000 in particular (typical but refer to your specific engine model for exact specifications), from Chilten's second edition, "Repair & Tune-Up Guide for Small Engines" (successor to [2]):

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