GMCdp,
A friend of mine recently had a starter for a old tractor rewound. He had to give his first born as collateral.
The windings are static...they don't move or wear out. Brushes, springs bushings and bearings are another matter. They are cheap and readily available. Those are the consumables in the generators and starters, not the case or windings.
If you are worried about the field windings you could always take the case to a motor shop and have them dip the thing for you..or you could buy a spray can of red insulating varnish and refurbish the thing yourself.
Stuart
