DeWalt DWS778 Manuel de service télécharger pdf (Page 12)

ENGLISH

IMPORTANT: The saw head (y) must be in its highest position to install

a new blade.

1. To raise the saw head (y) to its highest position, push down on the

saw head (y) and pull out the lock-down button (w).

2. Release the downward pressure and allow the saw head to rise to

its full height.

3. Insert the 6 mm hex key (z) deeply into the spindle lock (uu), found

opposite the blade shaft, and hold it (fig. 6, 8).

4. Insert the other 6 mm hex key (z) into the blade bolt (f) and loosen it

by turning clockwise. Remove the blade bolt (f) and the outer flange

(e).

5. Press the lower guard lock-up release lever (b) to raise the lower

blade guard (g) and remove the saw blade (h).

6. Install the new saw blade onto the shoulder provided on the inner

flange (ee) (fig. 7) making sure that the teeth at the bottom edge of

the blade are pointing towards the fence (away from the operator).

7. Replace the outer flange (e), making sure that the location lugs (jj)

are engaged correctly, one on each side of the motor shaft.

8. Insert the blade bolt (f) and tighten it with the 6 mm hex key (z) by

turning anti-clockwise while holding the 6 mm hex key (z) engaged

with your other hand (fig. 8).

9. Remove the two hex keys (z) and fit them back into their holder.

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.

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.

Adjusting the Traverse Bars for Constant Cutting

Depth (ﬁ g. 1, 2, 9, 10)

The blade must run at a constant cutting depth along the full length

of the table and must not touch the fixed table at the rear of the slot

or at the front of the rotating arm. To achieve this, the traverse bars

(x) must be perfectly parallel to the table when the saw head (y) is fully

depressed.

1. Press the lower guard lock-up release lever (b) (fig. 1).

2. Press the saw head fully to the rear position and measure the

height from the rotating table (n) to the bottom of the outer flange

(e) (fig. 10).

3. Turn the saw head traverse lock (s) (fig. 2).

4. Keeping the saw head fully depressed, pull the head to the end of

its travel.

5. Measure the height indicated in Figure 10 again. Both values

should be identical.

6. If adjustment is required, proceed as follows (fig. 9):

a. Loosen the locknut (kk) in the bracket (ll) under the upper

dust extraction nozzle (r) (fig. 1) and adjust the screw (mm) as

required, proceeding in small steps.

b. Tighten the locknut (kk).

WARNING: Always check that the blade does not touch

the table at the rear of the slot or at the front of the rotating

arm at 90° vertical and 45° bevel positions. Do not switch

on before having checked this!

Adjusting the Fence (ﬁ g. 11)

Lift the sliding fence lock lever (i) anti-clockwise to loosen. Move the

sliding fence (q) to a position that avoids the blade, then tighten the

fence lock lever by turning clockwise.

Checking and Adjusting the Blade to the Fence

(ﬁ g. 2, 12, 13)

1. Slacken the mitre latch (m).

2. Place your thumb on the mitre arm (l) and squeeze the mitre latch

(m) to release the rotating table/mitre arm (n).

3. Swing the mitre arm until the latch locates it at the 0° mitre position.

4. Pull down the head and lock it in this position using the lock-down

button (w).

5. Check that the two 0° markings (nn) on the mitre scale (o) are just

visible.

6. Place a square (oo) against the left side of the fence (q) and

blade (h).

WARNING: Do not touch the tips of the blade teeth with

the square.

7. If adjustment is required, proceed as follows:

a. Loosen the mitre scale screws (p) (fig. 12) and move the scale/

mitre arm assembly left or right until the blade is at 90° to the

fence as measured with the square (oo) (fig. 13).

b. Retighten the mitre scale screws (p).

Checking and Adjusting the Blade to the Table

(ﬁ g. 2, 14–16)

1. Loosen the bevel clamp handle (t) (fig. 14).

2. Press the saw head (y) to the right to ensure it is fully vertical and

tighten the bevel clamp handle.

3. Place a square (oo) on the table and up against the saw blade (h)

(fig. 15).

WARNING: Do not touch the tips of the blade teeth with

the square.

4. If adjustment is required, proceed as follows:

a. Loosen the bevel clamp handle (t) and using a hex key (z), turn

the vertical position adjustment stop screw (qq) in or out until the

blade is at 90° to the table as measured with the square.

b. If the bevel pointer (rr) does not indicate zero on the bevel scale

(u), loosen the bevel scale screws (pp) that secure the scale and

move the scale as necessary.

Checking and Adjusting the Bevel Angle

(ﬁ g. 2, 14, 16)

The bevel override allows the maximum bevel angle to be set at 45° or

48° as required.

1. Make sure the override knob (ss) is located in the left position.

2. Loosen the bevel clamp handle (t).

3. Standing in front of the machine, move the saw head (y) to the left.

4. This is the 45° bevel position.

5. If adjustment is required, turn the 45° bevel adjustment stop screw

(tt) using a 4 mm hex key (z), in or out as necessary until the bevel

pointer (rr) indicates 45°.

WARNING: The guide grooves can become clogged with

sawdust. Use a stick or some low pressure air to clear the

guide grooves.

Prior to Operation

WARNING:

• Install the appropriate saw blade. Do not use excessively

worn blades.The maximum rotation speed of the tool

must not exceed that of the saw blade.

• Do not attempt to cut excessively small pieces.

• Allow the blade to cut freely. Do not force.

• Allow the motor to reach full speed before cutting.

• Make sure all locking knobs and clamp handles are tight.

• Secure the workpiece.

• Although this saw will cut wood and many nonferrous

materials,these operating instructions refer to the cutting

of wood only. The same guide-lines apply to the other

materials. Do not cut ferrous (iron and steel) materials or

masonry with this saw! Do not use any abrasive discs!

• Make sure to use the kerf plate. Do not operate the

machine if the kerf slot is wider than 10 mm.

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DeWalt DWS778 Manuel de service Page 12

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