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Craftsman 351.219071 Instruction Manual page 22

Hollow chisel mortiser

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Figure 35
®
OPERATING
THE MORTISER
Figure
37
.
.
.
To remove the extension (D), place a 16mm open
end wrench (not provided) on the flats of the exten-
sion. See Figure 35.
Insert a flat head screwdriver into the center hole of
the motor end cap.
Turn the wrench clockwise to loosen the extension
from the motor shaft.
7.
Unscrew the extension from the motor shaft and
remove.
Figure
36
o
o
o
1.
Make sure that the workpiece (A) is held firmly
against the fence (B) when cutting and that the
holddown (C) is properly adjusted.
See Figure 37.
2.
Using the Raise/Lower handle (D), lower the chisel
until it penetrates the workpiece.
NOTE:
The rate of penetration of the chisel must be
fast enough to prevent burning at the tip of the bit, but
not too fast as to stall the motor.
NOTE: You may encounter smoke from the bit or
material once the chisel has engaged the material.
The smoke created is a natural operating occurrence in
hollow chisel mortising and is caused by material chip
friction and the resins in the stock being burned off.
.
Thread the chuck onto the motor shaft and tighten.
See Figure 36.
22

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