Thread: New starter motor woes

Put the new starter motor on yesterday turned the key - nothing. Took it off checked it on the bench all ok , back on - Nothing.Went to crank the engine with the starting handle -engine wouldnt move. Backed off the nuts holding sm onto the casing tried again and it turned the motor and fired but made a horrible racket. Sounds as if the sm pinion isnt disengaging? Tightened the nuts up again turned the key- no movement. If i tighten nuts to just finger tight it will work but sounds terrible + the sm is flopping about on the studs. Not understanding whats going on. SM is new. Fly wheel looks fine. Using same nuts and washers. What am I missing?
All comments/ ideas gratefully received as always,
cheers,
D

New Starter Motor - YouTube

Thanks.
Looks the same.
I'll get the measure out and make sure.
The only difference I can see is the large spring sits slightly out of its seat on one side by about 3mm , although cant get to grips with understanding whether this would cause the symptoms i am having.
cheers,
D

measured up and all looks similar. Will have a further think.
cheers,
D