where can i find

[Frodo]

I have looked on line and can not find a simple parts diagram  for a singer 4411

I am looking for the flywheel shaft size and the flywheel bore size.

I am thinking of  replacing the factory motor with a servo. and will need to add a v belt pulley 

[Constabulary]

if it was me I would take off the fly wheel (or hand knob?) and measure the shaft.

Parts diagrams usually do not show these measures.

Edited April 17, 2020 by Constabulary

[Frodo]

8 hours ago, Constabulary said:

if it was me I would take off the fly wheel (or hand knob?) and measure the shaft.

Parts diagrams usually do not show these measures.

you are correct,  i do not have a gauge for that.  i guess i better pick one up