Here is the first phase of my experiment with adding extra insulation to my 1972 Kirby Classic 1CR's motor unit.
This picture shows the first thing I did: I took the black brush lead wire (110973) and insulation tubing (111573) from my Tradition's foot switch, installed it on the top carbon brush holder (107276), then I added the cover (107185) and tucked the insulation over that.
~Ben
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