OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Engines Questions On Briggs & Stratton Engines 3.5 hp briggs muffler

can someone tell me if the muffler for this mower is a screw on type and if so what type would it be ive seen round type and a long tubular type

I must be missing something in the question but if there is a female thread on the exhaust=screw on. Round type is fine. This image is on the forum here somewhere and, although a different mower it is similar and was the closest looking one I could find.

If the exhaust port has a thread in it, you can use the pot type as above, or the "low tone" long tubular type, as long as they don't hit anything, which they shouldn't in your case. The pot type is rather loud, though.