Jack of all trades, master of none.
I am working on a cub cadet snowblower with a 5hp tecumseh. The starter just spins and th3 bendix doesn't engage the flywheel. When I take the starter off and run it the bendix goes up and down just fine. Press start button and it moves just fine under centrifugal force. The shaft is clean and lubed no burrs no tight spots . No knicks or burs on ring gear or bendix teeth. But when I put it on the engine it just spins. I can't see what it's doing because it is cast of the bendix so you can't see the bendix when it is on the engine. I have never had this problem.usually if the move free and move up and down when you run the starter when it's off they work. Any ideas.