"Bob Engelhardt" wrote in message
...
On 4/28/2015 8:07 PM, Jim Wilkins wrote:
http://www.tpub.com/basae/28.htm [rotor winding test]

I don't know how true this is, but I was assuming that a bad rotor
would cause sparking on the commutator and there is none.


When I don't know what's wrong I perform the easy tests to narrow it
down. Often simply disassembling, cleaning and oiling everything fixes
it.

Here's a motor shop fairly close to you:
http://www.chelmsfordautoelectric.com/services.nxg

I worked in Lexington for a while but don't know the businesses around
there, or Concord.

-jsw