5-17
Assemble the drill bit head and the drill bit clamp as the following:
a. Move away the drilling bit or lift the gearbox to the utmost point.
b. Power off.
c. Put on gloves.
d. Insert a thick wood plate into the underneath of the drill bit and the drill bit clamp.
e. Rotate the feed trip lever clockwise and have the spindle descend about
150 to 200 mm. As fig. a.
f. Rotate the revolving shaft from the bushing till that thing behind the machine is visible
from the hole of releasing drill bit, as fig. b.
g. Place the drill bit clamp end up, as fig. d.
h. Place the drill bit and its clamp end into the revolving shaft and have the drill shaft end
inserted into the hole for releasing the drill bit, as fig. b.
i. Rotate the feed trip lever counter clockwise. Make the spindle descend till the drill bit
and the bottom end of the drill bit clamp head contact the wood plate. Apply a little bit
force and complete it by confirming that the drill bit won’t fall.
Precaution：
：：
：
The distance between the thick wood plate, drill bit and the end of the drill bit clamp is
about 30 mm.
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