Broken camshaft most likely. A very common issue with the B&S engines. Little nub that cracks open the intake valve breaks off and the starter can't pull the motor past the compression stroke. Easy fix if your mechanically inclined. A lot of people buy batteries, cables, solenoids and etc., but...
If it's a Briggs and Stratton the camshaft most likely broke. I have a 21hp and a 17hp the same thing happened to, it's a common issue with them. There's a nub on the cam that opens the intake valve a little to relieve the compression so the starter can spin the motor. Once it starts the...
Thank you, this makes sense. I figured it was something to do with compression relief because once it starts it runs like new, just can't get the starter past that compression stroke. Thank you so much!
The tractor is a 2012 Craftsman 42" 21 HP and has been very well maintained since I bought it new. It looks and runs almost new still. Last spring I was mowing. I shut it off for a minute. I kind of double started it when I resumed, meaning turned the key, accidently let go and then turned the...