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4. INSERTING CHISEL & DRILL BIT
WARNING! Ensure the mortiser is switched off and is unplugged
p
p
from the mains power supply.
Note: The chuck clamp spindle (fig 14.2) may be locked in chuck and
should be removed before attempting to perform the following.
4.1
Insert the bush (fig7-2) into the collar at the base of the main
head ensuring that the hole in the side of the bushing is aligned
with the socket cap screw (fig7-3) in the left hand side of the
collar. Retain the bush by turning the screw inwards but do not
let it protrude inside the bush as this will impede the insertion of
the chisel.
WARNING! Use gloves or cloth when handling drill and chisel
p
p
bits, as the ends are very sharp. Remember to remove gloves
and/or cloth before starting the mortiser.
4.2
When the chisel/drill bit is correctly set up there should be a
clearance of between 0.8 and 1.6mm between the end of the
chisel and the drill cutting spur. To do this use the following
procedure.
4.3
Open head side covers (fig 7.1) to expose the chuck (fig 7.6).
Ensure that the jaws in the chuck are fully retracted to allow the
drill to fully enter the chuck.
4.4
Remove the protective cover from the end of the chisel/drill set
and hold a protective pad or small piece of wood on the drill
tip. Push the chisel/drill set up into the chisel bush until it stops.
4.5
Now rotate the chisel portion so that the opening in the side
faces to the left or right. (If the workpiece is to be moved
progressively to the right the opening in the side of the
chisel should face to the right. If moving the workpiece to the
left then face the opening to the left. Do not face the slot to the
front or rear because wood chips produced during the cutting
process will not be able to escape from the chisel.)
4.6
Tighten the chisel retaining screw (fig.7-3) using the hex key
provided.
4.7
Keeping the protective pad on the drill tip, push the drill up into
the chisel until the drill spur has a clearance of 0.8 - 1.6mm
from the chisel (Fig.7.5) then tighten the chuck using the chuck
key provided (fig.7-6).
4.8
Close the side covers and remove any protection from the
chisel/drill tips.
5. CONTROLS AND ADJUSTMENTS
WARNING! Ensure the mortiser is switched off and is unplugged
p
p
from the mains power supply.
5.1
Raising and lowering the mortiser.
5.1.1 Handle. Use the handle (fig 8.) to raise and lower the head.
5.1.2 Pull the handle towards you to lower the head.
5.1.3 Allow the handle to return to raise the head.
5.1.4 Depth stop adjustment. The depth stop limits the depth of
chisel cut. To adjust the depth stop, loosen lock knob (fig 9.S)
and lower the head until the bottom of the chisel is at desired
depth. Raise the depth stop until it makes contact with the
underside of the head and re-tighten knob (S).
5.2
Back rest. To position back rest, loosen locking handle
(fig.10.1). Position rest by moving it in or out, when correctly
positioned re-tighten locking handle.
5.3
Clamp adjustment. The clamp (fig 11.1) prevents the
workpiece from lifting as the chisel is raised up from the cutting
hole. Adjust the clamp so that it rests on the top of the
workpiece but will allow the workpiece to slide to the left
or right. The clamp may be turned upside down to
accommodate thicker workpieces. To adjust the clamp
loosen the set screw “Y” and move the clamp up or down
accordingly and re-tighten set screw.
5.4
Parallel chisel adjustment. Adjust the position of the
workpiece until it is almost touching the back of the chisel.
Loosen the chisel retaining screw (fig 12.A) to allow it to
rotate and edge the workpiece up to the back of the chisel to
ensure that the chisel is parallel to the surface of the workpiece.
Re-tighten the locking screw and reposition the workpiece for
cutting.
fig 8
fig 11
Y
1
fig 7
fig 9
1
fig 10
fig 12
SM94.V3 - 1 - 161205
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