DeWalt DW743K, Manual

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27
EnGLIsh
13 Guard release lever
14 Operating handle
15 Hand indentations
16 Date code
17 Trigger switch (mitre saw mode)
18 Riving knife
19 Push stick storage
20 Leg
21 Foot
22 Table locking device
23 Saw table retention bracket
24 Bevel clamp knob
Intended Use
Your D
e
WALT flip-over saw has been designed to operate as a mitre saw or saw bench to
perform the four main sawing operations of ripping, cross-cutting, bevelling and mitring
easily, accurately and safely.
This unit is designed for use with a nominal blade diameter 250 mm carbide tip blade for
professional cutting wood, wood products and plastics.
Mitre saw Mode
In mitre saw mode, the sawing machine is used in vertical, mitre or bevel position.
Bench saw Mode
Turned over on its central axis, the sawing machine is used to perform the standard ripping
operation and for sawing wide pieces by manually feeding the workpiece into the blade.
WARNING:
Do not use the machine for other purposes as described.
DO nOT
use under wet conditions or in the presence of flammable liquids or gases.
DO nOT
let children come into contact with the tool. Supervision is required when
inexperienced operators use this tool.
•
Young children and the infirm.
This appliance is not intended for use by young children
or infirm persons without supervision.
• This product is not intended for use by persons (including children) suffering from
diminished physical, sensory or mental abilities; lack of experience, knowledge or skills
unless they are supervised by a person responsible for their safety. Children should never
be left alone with this product.
ASSEMBLY AND ADJUSTMENTS
WARNING: To reduce the risk of injury, turn unit off and disconnect machine
from power source before installing and removing accessories, before adjusting
or changing set-ups or when making repairs.
Be sure the trigger switch is in the OFF
position. An accidental start-up can cause injury.
Unpacking
WARNING:
When moving the machine, always seek assistance. The machine is too
heavy for one person to handle.
1. Remove the loose packaging material from the box.
2. Lift the machine out of the box.
3. Remove the parts box from the interior of the machine.
4. Remove any remaining packing material from the machine.
Mounting the Legs (Fig. G1)
With the legs mounted, the machine is suitable for stand-alone placement.
1. Turn the machine upside down.
2. Pass a coach bolt
38
from the flat side through the holes into each of the legs
20
.
3. Place a lock knob
39
and washer
40
onto the bolts.
4. Present a leg
20
to each of the mounting points
37
located at the edges on the inside of
the base. For each leg, make sure that the lock knob and washer locate at the outside of
the open ended slot.
5. Tighten the lock knobs.
6. Turn the machine straight up. Make sure it is level; adjust the leg clamping height
if required.
Mounting the Machine to the Workbench (Fig. G2)
With the legs removed, the machine is suitable for placement on a workbench. To ensure a
safe operation, the machine has to be fixed to the workbench and mounted with bolts 8 mm
diameter by 80 mm long.
Assembly for Mitre Saw Mode
Mounting the Under-Table Guard (Fig. H)
The under-table guard
41
is fitted to the top of the bench saw table.
1. Place the two hooks on the left of the guard into the oblong slots on the left of the blade
slot
42
.
2. Place the guard flat on the table and press it in the locking grommet.
3. To remove, loosen the grommet with a screwdriver and proceed in reverse order.
Turning the Sawhead and Table Over (Fig. B, I1, I2)
1. Withhold the saw table with one hand and push the table release lever
2
to the left
(Fig. I1).
2. Push the table downwards at the front and swing it over completely until the motor
assembly is uppermost and the indentation engages in the retaining teeth of the table
locking device
22
.
3. The head assembly is held down by a clamp strap at the front and a height adjuster
25
at
the rear (Fig. B).
4. Remove the strap.
5. Rotate the wheel 43 counterclockwise whilst holding down the head until the
"U"-shaped bracket
44
can be disengaged from its seating (Fig. I2).
6. Swing and push the height adjuster up.
7. Holding the head firmly, allow the spring pressure to take the head upwards into its
rest position.
Mounting the Saw Blade (Fig. A, J1–J3)
WARNING: To reduce the risk of injury, turn unit off and disconnect machine
from power source before installing and removing accessories, before adjusting
or changing set-ups or when making repairs.
Be sure the trigger switch is in the OFF
position. An accidental start-up can cause injury.
WARNING:
Be aware the saw blade shall be replaced in the described way only. Only use
saw blades as specified under
Technical Data
; Cat.no.: DT4321.
WARNING:
The teeth of a new blade are very sharp and can be dangerous.
WARNING:
Always change blades with the machine in mitre saw mode.
1. Ensure riving knife
18
is secured in the upper rest position (Fig. A).
2. Insert the hex key
45
through the hole
46
in the belt casing into the spindle end (Fig. J1).
Place the blade spanner
47
onto the blade locking screw
48
(Fig. J2).
3. The blade locking screw has a left-handed thread, therefore holding the hex key firmly,
turn the spanner clockwise to loosen.
4. Depress the head lock up guard release lever 13 to release the lower guard 12 , then raise
the lower guard as far as possible.
5. Remove the blade locking screw 48 and the outside arbor collar 49 (Fig. J3).
6. Make sure the inner flange and both faces of the blade are clean and free of dust.
7. Install the saw blade
50 onto the shoulder 51 provided on the inside arbor collar 52 ,
making sure that the teeth at the bottom edge of the blade are pointing toward the back
of the saw (away from the operator).
8. Carefully ease the blade into position and release the lower blade guard.
9. Replace the outer arbor collar.
10. Tighten the blade locking screw
48
by turning counterclockwise while holding the hex
key steady with your other hand.
11. Place the blade spanner and Hex key in their storage position.
WARNING:
After mounting or replacing the blade, always check that the blade is fully
covered by the guard. Make sure the blade spanner and hex key have been replaced in
their storage position.
Adjustments for Mitre Saw Mode
WARNING:
Be aware the saw blade shall be replaced in the described way only. Only use
saw blades as specified under
Technical Data
; Cat.no.: DT4321.
Your mitre saw was accurately adjusted at the factory. If readjustment due to shipping and
handling or any other reason is required, follow the steps below to adjust your saw. Once
made, these adjustments should remain accurate.
Checking and Adjusting the Blade to the Fence (Fig. K1, K2, L)
1. With the head in the vertical position and the bevel clamp knob
24
released, slacken the
locking screw
53
in the rotating table location plunger
8
(Fig. K1).
2. Pull down the head until the blade just enters the saw kerf.
3. Place a square
54
against the left side
7
of the fence and blade
50
(Fig. K2). The angle
should be 90°.
WARNING:
Do not touch the tips of the blade teeth with the square.
4. If adjustment is required, proceed as follows:
a. Rotate the eccentric adjustment bush 55 until the face of the saw blade is flat against
the square (Fig. K1).
b. Tighten the locking screw
53
.
5. Check that the red marks
56
near the blade slot
42
are in line with the 0° position
57
on
the two scales (Fig. L).
6. If adjustment is required, loosen the screws
58
and bring the indicators in line. The 45°
position should now also be accurate. If this is not the case, the blade is not perpendicular
to the rotating table (see below).
Checking and Adjusting the Blade to the Table (Fig. M1, M2)
1. Loosen the bevel clamp knob 24 (Fig. M1).
2. Press the saw head to the right to ensure it is fully vertical and tighten the bevel
clamp handle.
3. Pull down the head until the blade just enters the saw kerf.
4. Place a set square
54 on the table and up against the blade 50 (Fig. M2). The angle
should be 90°.
WARNING:
Do not touch the tips of the blade teeth with the square.
5. If adjustment is required, proceed as follows:
a. Loosen the bevel clamp knob
24
(Fig. M1) and turn the vertical position adjustment
stop screw 59 in or out until the blade is at 90° to the table as measured with the
square
54
(Fig. M2).
Checking and Adjusting the Mitre Angle (Fig. A, L)
The straight cross-cut and 45° mitre positions are pre-set.
1. Pull up the rotating table location plunger 8 and rotate it counterclockwise a quarter of a
turn (Fig. A).