Compound Mitre; General Handling - DeWalt DW743N Original Instructions Manual

EN G LI S H
• Ensure the material to be sawn is firmly secured in place.
• Apply only a gentle pressure to the tool and do not exert
side pressure on the saw blade.
• Avoid overloading.
Ensure the machine is placed to satisfy your ergonomic conditions in
terms of table height and stability. The machine site shall be chosen so
that the operator has a good overview and enough free surrounding
space around the machine that allows handling of the workpiece
without any restrictions.
To reduce effects of vibration make sure the environment temperature
is not too cold, machine and accessory is well maintained and the
workpiece size is suitable for this machine.
Switching on and off (fi g. A1–A2, P)
This machine has two independent switching systems. In bench saw
mode, the on/off switch (1) (A1) is used. In mitre saw mode, the trigger
switch (15) (A2) is used.
BENCH SAW MODE (FIG. P)
The on/off switch used in bench saw mode offers multiple advantages:
– no-volt release function: should the power be shut off for some
reason, the switch has to be deliberately reactivated.
– extra safety: the hinged safety enclosure plate can be locked by
passing a padlock through the centre hasp. The plate also serves
as an "easy to locate" emergency stop button as pressure on the
front of the plate will depress the stop button.
To switch the machine on, press the green start button (80).
To switch the machine off, press the red stop button (81).
MITRE SAW MODE (FIG. A2)
To switch the machine on, press the trigger switch (15).
To switch the machine off, release the trigger switch.
BASIC SAW CUTS
Sawing in Mitre Saw Mode
It is dangerous to operate without guarding. Guards must be in position
when sawing.
• Make sure that the under-table guard does not become clogged
with sawdust.
• Always clamp the workpiece when cutting non-ferrous metals.

General Handling

– In the mitre saw mode, the sawhead is automatically locked in the
upper "park" position.
– Squeezing the guard release lever will unlock the sawhead. Moving
the sawhead down retracts the moveable lower guard.
– Never seek to prevent the lower guard returning to its park position
when the cut is completed.
– The minimum length of offcut material is 10 mm.
– When cutting short material (min. 190 mm to the left or the right of
the blade), the use of the optional material clamp is recommended.
– When cutting UPVC sections, a supporting piece made out of
timber with a complementary profile should be placed beneath the
material being cut to provide the correct level of support.
Vertical Straight Cross Cut (fi g. Q)
• Set the rotating table to 0° and make sure that the locating plunger
is engaged.
• Tighten the rotating table clamping knob.
• Place the wood to be cut against the fence. Take hold of the
control handle and press in the guard retraction lever.
• Switch the machine on.
• Allow the blade to cut freely. Do not force.
• After completing the cut, release the switch and wait for the saw
blade to come to a complete standstill before returning the head to
its upper rest position.
• Release the guard retraction lever.
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WARNING: Do not allow the sawhead to jump back
unaided to prevent damage.
Mitre Cuts (fi g. R)
• Set the required mitre angle.
• Ensure that the rotating table clamp is tightly secured.
• Proceed as for a vertical straight cross-cut.
• Prevent the blade cutting the table if the angle is not 45°.
WARNING: When mitring the end of a piece of wood with
a small off-cut, position the wood to ensure that the off-
cut is to the side of the blade with the greater angle to the
fence: left mitre, off-cut to the right mitre, off-cut to the left.
Bevel Cuts (fi g. A2, S)
• Release the bevel clamp handle (22) and tilt the head to the angle
required.
• Tighten the bevel clamp handle.
• Proceed as for a vertical straight cross-cut.

Compound Mitre

This cut is a combination of a mitre and a bevel cut. The limitations are
35° mitre/30° bevel. Do not exceed these limits.
Set the bevel angle and subsequently set the mitre angle.
Sawing in the Bench Mode
• Always use the riving knife.
• Always ensure that the riving knife and blade guard are correctly
aligned.
• Always ensure that the mitre saw is set and locked in 0° mitre.
WARNING: Do not cut metal in this mode.
Ripping (fi g. A2, T)
• Set the bevel angle to 0°.
• Adjust the saw blade height. The correct blade position is to have
the tips of three teeth above the top surface of the wood.
• Set the parallel fence to the required distance.
• Hold the workpiece flat on the table and against the fence. Keep
the workpiece approx. 25 mm away from the saw blade.
• Keep both hands away from the path of the saw blade.
• Switch the machine on and allow the saw blade to reach full
speed.
• Slowly feed the workpiece underneath the upper blade guard,
keeping it firmly pressed against the fence. Allow the teeth to cut,
and do not force the workpiece through the saw blade. The saw
blade speed should be kept constant.
• Remember to use the push stick (17) when close to the blade.
• After completing the cut, switch the machine off, allow the saw
blade to stop and remove the workpiece.
WARNING: Never push or hold the free or cut-off side of
the workpiece.
WARNING: Always use a push stick when ripping small
workpieces.
Bevel Cuts (fi g. U)
• Release the bevel clamp handle and set the blade to the required
angle.
• In order to prevent material jamming between the blade and the
fence, position the fence to the left of the blade.
• Proceed as for vertical ripping.
Mitre Cuts (fi g. V1–V3)
• To adjust the mitre fence, loosen the stop screw locknut (81) and
screw the stop (82) in or out until the mitre pointer reads 0°
(fig. V1).