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DeWalt DCS777 Original Instructions Manual page 42

Cordless compact mitre saw
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  • ENGLISH, page 34
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2. Install the new saw blade onto the shoulder provided on the inner
flange 
 33 
making sure that the teeth at the bottom edge of the blade
are pointing towards the fence (away from the operator).
3. Replace the outer flange 
 4 
, making sure that the location lugs 
engaged correctly, one on each side of the motor shaft.
4. Tighten the blade bolt 
by turning counterclockwise while holding
 5 
the 6 mm hex key 
 24 
engaged with your other hand (Fig. D).

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.: DT4320 is suggested.
ADJUSTMENTS

WARNING: To reduce the risk of serious personal injury, turn
machine off and disconnect battery pack before making any
adjustments or removing/installing attachments or accessories.
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 Rails for Constant Cutting Depth
(Fig. A, B, F, G)
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 rails must be perfectly parallel to the
table when the saw head is fully depressed.
1. Press the lower guard lock up release lever 
2. Press the saw head fully to the rear position and measure the height
from the rotating table 
 13 
to the bottom of the outer flange 
3. Turn the saw head rail lock knob 
4. Keeping the saw head fully depressed, pull the head to the end of
its travel.
5. Measure the height indicated in Figure F again. Both values should
be identical.
6. If adjustment is required, proceed as follows (Fig. G):
a. Loosen the locknut 
 37 
in the bracket 
as required, proceeding in small steps.
b. Tighten the locknut 
 37 
.

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 (Fig. H)
Turn the sliding fence lock knob 
 8 
sliding fence 
 15 
to a position that avoids the blade cuts it, then tighten the
fence lock knob by turning clockwise.

WARNING: The guide grooves can become clogged with sawdust. Use
a stick or some low pressure air to clear the guide grooves.
Checking and Adjusting the Blade to the Fence
(Fig. A, B, I, J)
1. Slacken the mitre latch 
 12 
.
2. Place your thumb on the mitre arm 
to release the rotating table/mitre arm 
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
pin 
 21 
(Fig. B).
5. Check that the two 0° markings 
just visible.
6. Place a square 
 40 
(Fig. J) against the left side of the fence 
.
blade 
 7 

WARNING: Do not touch the tips of the blade teeth with the square.
40
 34 
 2 
(Fig. A).
 4 
(Fig. F).
 17 
(Fig. B).
 35 
and adjust the screw 
counterclockwise to loosen. Move the
 11 
and squeeze the mitre latch 
 13 
.
 38 
on the mitre scale 
 14 
are
 15 
and
7. If adjustment is required, proceed as follows:
a. Loosen the screws 
assembly left or right until the blade is at 90° to the fence as
measured with the square (Fig. J).
are
b. Retighten the screws 
Checking and Adjusting the Blade to the Table
(Fig. K–M)
1. Loosen the bevel clamp handle 
2. Press the saw head to the right to ensure it is fully vertical and tighten
the bevel clamp handle.
3. Place a set square 
 40 

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 
adjustment stop screw 
table as measured with the square.
b. If the bevel pointer 
scale 
 19 
, loosen the screws 
scale as necessary.
Checking and Adjusting the Bevel Angle (Fig. A, L, M)
The bevel override allows the max. bevel angle to be set at 45° or 48°
as required.
-
Left = 45°
-
Right = 48°
1. Make sure the override knob 
2. Loosen the bevel clamp handle 
3. This is the 45° bevel position.
4. If adjustment is required, turn the stopscrew 
until the pointer 
 42 
Prior to Operation
Install the base extensions to both sides of the saw's base. Refer to
Assembling the Base Extensions section.
 36 
Check the protective belt cover for damage and the proper functioning
of the lower guard.
Make sure to use the kerf plate. Do not operate the machine if the kerf
slot is wider than 12 mm.
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.
Make sure all locking knobs and clamp handles are tight.
Use personal protective equipment and connect the saw to an external
dust extractor.
Although this saw will cut wood and many nonferrous materials, these
operating instructions refer to the cutting of wood only. The same
guidelines apply to the other materials. Do not cut ferrous (iron and
steel) materials, fibre cement or masonry with this saw!
Do not attempt to cut excessively small pieces.
Secure the workpiece.
 12 
Allow the blade to cut freely. Do not force.
Allow the motor to reach full speed before cutting.
OPERATION
Instructions for Use

WARNING: Always observe the safety instructions and
applicable regulations.
 39 
(Fig. I) and move the scale/mitre arm
 39 
.
 18 
(Fig. L).
on the table and up against the blade 
 18 
and turn the vertical position
 41 
in or out until the blade is at 90° to the
 42 
does not indicate zero on the bevel
 43 
that secure the scale and move the
 29 
(Fig. L) is located in the left position.
 18 
and move the saw head to the left.
 44 
in or out as necessary
indicates 45°.
 7 
(Fig. K).

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