Troubleshooting Guide
Power Feed Variable Feed Rate Switch Test
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50HD07doc072310
Troubleshooting Guide
6.7
Power Feed Variable Feed Rate Switch Test
With the feed rate dial switch all the way down, move the shaft of the dial back and forth
to see if there is a jerky response. Turn the dial and move the shaft back and forth again.
Repeat several times. If the jerkiness occurs at the same location on the dial several
times, you need to replace the variable speed switch.
WARNING!
Disconnect and lockout power before perform-
ing any service to the electrical system. For battery-pow-
ered equipment, disconnect the negative battery terminal
cable. Failure to do so may result in injury and/or electrical
system damage.