Dear Samuel and MMD,  A good motor repair shop should be able to fit
a solid-state universal start switch to your motor.  These eliminate
the mechanical switch altogether.  I had a similar problem with the
original motor on my 1913 Seeburg F and was able to fit one of these
devices successfully.

A capacitor may also be necessary depending on the start and run
winding configuration, but that is not a big deal.  One place these
switches can be found is http://store.eurtonelectric.com/switches.aspx 

Hope this helps,

Larry Emmons

 [ At http://www.samusco.com/eng/main/main.php  --
 [   "Electronic Centrifugal Switch"
 [ Motor starting switch, for split-phase (resistance) starting
 [ 1/8- to 1/2-horsepower, 110/220 VAC
 [ Model ECS112PS, part no. T1235-600G
 [  -- Robbie