I have an old green and yellow Weed Eater string trimmer my wife got
from her late father. It has a single line tap-to-feed head and until
recently worked fine. Recently the wife complained that it was starting
and stopping and not running well. Today it wouldn't run at all. I
took it all apart, switch seems good, nothing obviously wrong with the
motor. It's a typical wound rotor, permanent magnet brush type motor. I
put the motor on the bench and tried it with test leads, nothing. I
took it apart and cleaned the commutator with a wire wheel and ran an
awl down the commutator sections. Still nothing. Brushes are good,
plenty of length. When I was looking at the cord a little later I
discovered one leg had a resistor and .01 mf ceramic capacitor in
parallel in the line. The cap looks a little beat up. Any idea what
they are for? Any ideas on the motor?
(I just bought her a new Stihl corded electric trimmer, so it's mostly
academic at this point but I would still like to know.)
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