Frank_N_Stein
Grandmaster
I have a JD170 that my dad bought new in 1991. Lately it has been shutting itself off after about an hour of use, more quickly if it is a warm or hot day. I will be mowing or picking up leaves with it at full power and it will suddenly lose power and the engine will die. If I catch it quick enough I can lower the throttle lever and keep it from shutting down completely. It will start right back up but will shut off again after I start mowing again. I have a suspicion that it has something to do with the mower PTO switch but I don't have enough mechanical knowledge to say for sure. The manual doesn't address that specific malfunction. Any help is appreciated.