Starter motor pinion

[davidwheeler]

I have had my Bosch starter motor refurbished and it is now in fine fettle but has a tendency to get stuck in the flywheel.
By which I mean, it engages and spins the engine but if it does not fire the pinion may remain extended and so I have to disengage it.
The motor may be a little too close to the starter ring and tomorrow I will retract it a few mm but I wonder how tight should be the nut that holds the pinion onto the shaft?

[davidwheeler]

Problem 1 solved  the nut on the end of the shaft at the back has come off so the retractor spring is not actuated.   It fell off in the garage in a space of 2 square feet do has completely vanished of course.
Still need to know about the nut on the front though.

[Dikappa]

David, it should be not to ticht so that you can operate the ratchet mechanism by hand.  On my starter if i turn it slowly i rotate the shaft, but if I give the pinion a 'swing' the ratchet mechanism operates.  Hope that makes sense....

[davidwheeler]

Thanks, that is what i thought but it is nice to be confirmed.