the sprag clutch ( overrun gear ) is gone and needs to be replaced
a new part can be bought but normally the complete starter is changed
in some cases squirting diesel oil on the sprag clutch can cure the problem
but it normally reoccurs again
You need to replace the starter.
The starter drive (aka bendix) is broken. The bendix and/or starter needs to be replaced.
The woo woo noise you describe sounds like the starter is trying to spin. The bushings inside the starter are probably worn, causing the starter to drag. When the starter drags, it cannot spin fast enough to start the engine and the worse it drags, the less it is able to spin.
Usually when a starter solenoid/relay switch is bad, you will hear only a click and the starter will not spin (crank).
When and if the engine stops at the point where the starter gear is aligned with the missing teeth the starter will just spin and not start the engine. Over time even if the starter turns the engine over it will eventually ruin the starter. You need to replace the flywheel and the starter immediately.
the armeture is shoeted. replace the starter.
What do you mean when you say it doesn't engage? Is the starter spinning but just doesn't catch to spin the engine? IF that's the case it could be as simple as a loose starter or as bad as a damaged flex plate/flywheel. But it would most likely be the starter.
There is many different things that can be wrong. If you have lights but the starter won't spin, then you could have a bad break light switch,a bad starter switch, bad starter solenoid, or even a bad starter. If the starter does spin but the motor won't start it could be a bad spark plug, bad coil, fuel blockage, carburetor that needs to be cleaned out, or bad stator.
because its gone bad the starter solenoid is engaging the gears, yet the motor fails to spin
It was started by hand. One person would lay on the airplane while another person would spin the propeller. The engine had no battery so an electric starter was not an option.The props were carefully turned by hand to start the engines.
could you please help me??????????????
the starter