Foredom Shaft and Sheath Replacement User Manual

Removing Worn Shafts and Sheaths

Always be sure your power
tool is unplugged during
maintenance procedures!

Shafts and sheaths last longer when they are not
used at sharp angles or loops, since wear occurs at
the points of greatest friction. There is no way to
avoid ultimate wear, and under normal conditions a
flexible shaft machine may require several replace­ment shafts and sheaths during its lifetime.

1. First, remove the
handpiece by simply

pulling the handpiece
off the shaft and sheath
with a firm grip.

2. Loosen set screw on
motor connector.

3. Slide outer sheath out
of motor connector.

4. Remove motor
connector with 1
end or adjustable wrench.

Motor connector has a left
hand thread and must be
turned clockwise (right)
for removal.

5. Loosen set screw on
the flexible shaft motor
coupling and slide shaft
off the motor shaft.

www.foredom.com

FOREDOM

The Foredom Electric Co.
Bethel, CT 06801 USA

″ open

®

set screw

motor
coupling

F-93/77 n 5/10

motor
shaft

Installation of New Shaft

6. After removing old shaft, loosen set screw on the
new flexible shaft motor coupling and slide coupling
onto motor shaft.

7. Tighten set screw
securely onto the flat
of the motor shaft.

8. Slide motor connector
back up over the shaft
and tighten to the left
(counterclockwise).

9. Slide sheath over
flexible shaft with
plain fitting toward the
motor and into the
motor connector. (Each
end of the sheath has
a metal fitting. One is
plain, the other has a
groove around it to
fit the handpiece.)

Shaft and Sheath Adjustment

10. Place the entire unit on a
flat surface with shaft and
sheath extended straight.

Adjust the exposed tip of
the flexible shaft at the
handpiece end so that it
extends 3/4″ (19mm)
beyond the sheath.

11. This is done by moving
the sheath in or out of the
motor connector. When the
correct adjustment is made,
tighten the screw in the
motor connector.

12. To re-attach
handpiece look

into the back
end of the
handpiece for
the keyway. Be sure that the key tip of the flexible
shaft is properly lined up with the keyway slot in the
back end of the handpiece and push it on. If it is not
in line, turn the shaft tip or the handpiece to the
correct position.

inside,
back end of
handpiece

keyway

IMPORTANT!

key tip end of shaft