Toro Model 38517; Serial 220004489, snowthrower. Son in law says it started this winter and ran for a minute or so and just continued to run faster. Then he shut it off and tried to restart a couple hours later with no luck. I looking into some basic stuff first; check spark, pull and clean carb, check compression, etc. I can find the ignition coil air gap and proper spark plug but I do not know what compression should be, new or with age. Does anyone know what the compression was for this? AND any idea what would be acceptable (or minimum) compression for the engine to run?
Thanks