I have the classic my tractor wont start problem but with a twist. I've replaced the solenoid, replaced the battery, and new starter. when i crank the key the motor turned about 1/2 a turn then nothing. I disconnect the battery and put jumpers direct to the starter and same thing turned the flywheel about 1/2 a rotation and nothing.

I'm stumped its a 19.5 hp briggs and stratton sears craftsman.

the fly wheel turns by hand a full rotation so its not seized up or anything but the starter doesn't seem to have the power to crank it around