You can't just replace the teeth, you have to replace the whole flywheel
Remove the trany and you will see the flywheel bolted to the rear of the motor. Remove the bolts & replace the flywheel. Check the starter as a bad starter can chew the teeth off of a flywheel very quickly.
The flywheel can be cracked or the teeth on the flywheel can be broken or worn. Either of these conditions require the flywheel be replaced. I would also replace the starter when replacing the flywheel. This will prevent damage to the new flywheel from the worn teeth on the old starter.
About the only thing that can go wrong with a flywheel is for it to crack or loose teeth. In either case, you replace it, not repair.
Big job. To replace a flywheel, you need to remove the drive shaft,and the gearbox. iIf a manual transmission,you will also need to remove the clutch and pressure plate.If an automatic, you will need to remove the torque converter. With all this removed, you then remove the flywheel and replace with new one. then reinstall clutch,etc gear box and driveshaft.It is a good idea at this time ,if a manual transmission,to replace the clutch,while you have it apart. "NOTE" make sure when you replace flywheel that the correct number of teeth on flywheel will match number of teeth on starter motor.To do this mark a tooth on the flywheel and count the teeth.Alos count the teeth on the starter motor.installing wrong one will chew up the teeth on new flywheel and starter and then you will have to start all over.
Starter Drag is when the teeth on the starter that spin the flywheel drag. It could break teeth off of starter possibly have to replace/ rebuild starter.
if you put a flywheel on that was not the same as the old one then it is probably going to be done again and replaced with the correct one.
you are probally missing teeth on the flywheel you should replace the flywheel.
A bad flywheel can definitely cause the engine not to turn over. The flywheel has teeth. If the teeth are chipped or broken, then the starter can not engage to spin the engine over.
if the starter is spinning but not engaging then the bendix (starter teeth) is not moving out to grab the flywheel teeth or the flywheel has some broken teeth. The starter needs to be removed to see what the issue is.
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 teeth on the flywheel will be missing or damaged when you rotate it around.
the starter bendix is bad or the flywheel it self has some teeth missing The Starter Bendix drive is not close enough to the flywheel. Reinstall the starter and check to see if there are shims that can be removed to place it closer.