Air filter and/or fuel filter may be clogged; carburetor needle valve(s) and/or linkage may need adjustment. You may have an exhaust valve that is leaking or your head(heads) needs to be decarboned another check if you have a point style ignition, clean and regap the points
yes
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briggs and straton, kohler, or kawasaki, depending on the model
The Briggs and Straton Quattro is a 4 hp engine
The Briggs and Straton Quattro is a 4 HP
100 inch/pounds
Timing is off ...
.002-.005 intake and, .005-.007 exhaust
It just unscrews from the motor
it will hold about a half quart of oil
B&S site
A 17.5 Briggs and Stratton engine may backfire and fail to start due to several issues, such as incorrect ignition timing, a faulty spark plug, or stale fuel. Additionally, a clogged carburetor can prevent the proper air-fuel mixture from entering the engine, leading to backfiring. Other potential causes include a damaged exhaust valve or air leaks in the intake system. Regular maintenance and checks can help identify and resolve these issues.