The screw on the right side (chuck end) is to tension the shaft so that it won't come out of gear, but loose enough to still engage it.
The one on the left is for adjusting the engagement of the backgears. To adjust it, loosen it up and engage the gears to where you
want it(shims, feel, what ever method you use), then screw in the screw untill it touches. Disengage the gears and engage it to
the stop and test it. You may want to tweek it from there.
The screw is the stop. It hits a slot in the ecentric that limits the rotation of the shaft.
Engage the back gear, then back off the screw. then engage it some more. do this untill you are happy with the backlash.
Ted Pflugner
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To remove the back gear, the taper pin on the right side of the back gear has to come out. Roll the back gear so the little end is up
and tap it out. Now take out the square head bolt on the right back underside of the head stock casting. The one on the right side
could have a spring and a bronze shoe under it. The one on the left is a stepped set screw with a nut, this is the adjustment setup
for the back gear mesh clearance. Take these two items out of the casting and after you slide the right side bushing out of the
casting the back gear handle with shaft will slide out to the left. Dont let the back gear drop."-))) .
Dennis Turk
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