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19
C. TENSIONING
1.
Make sure the electrical power is positively "off', either by a lockout switch or the plug pulled
from the outlet. Remove the top and bottom wheel covers. Now, turn the top wheel over by
hand. Does it turn freely? If so, move on to step "2", if not, use the blade tensioning knob (1)
and ioosen a turn or so. We want the blade to be just barely snug, not sloppily loose.
Figure 15 Shows location of tensioning knob.
Figure 16 Shows tracking knob location.
2.
When your blade and wheels will freely turn by hand, the tracking may now be readily set. Use
the adjustment described for this job. Turn the wheel by hand while you adjust knob (2) and
after an adjustment Is made, turn the wheel at least three full revolutions to give the blade a
chance to "walk" to its new position. This is particularly important for the orientation of the
blade on the lower wheel, because the lower wheel Is completely fixed. We want the flat back
of the blade approximately centered on both wheel faces when we are done.
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