I am a retired mechanic/ teacher. Have a Kawasaki powered John Deere walk behind mower. Present challenge a DR string trimmer mower that hasn't run for years. Biggest challenge so far- getting the passages in the carburetor opened back up.
I live in northern Iowa and head south when it gets really cold...
I have a JS75, I think. It was the last model year for the Kawasaki full oil pressure, filtered, engine and blade brake clutch in the self-propelled walk behinds. Worked for Deere dealerships for a long time.