DeWalt DC519 Guide D'utilisation page 24

2. Retract the lower blade guard (G) and place blade on saw
spindle against the inner clamp washer, making sure that
the blade will rotate in the proper direction (the direction of
the rotation arrow on the saw blade and the teeth must point
in the same direction as the direction of rotation arrow on the
saw). Do not assume that the printing on the blade will always
be facing you when properly installed. When retracting the
lower blade guard to install the blade, check the condition and
operation of the lower blade guard to assure that it is working
properly. Make sure it moves freely and does not touch the
blade or any other part, in all angles and depths of cut.
3. Place outer clamp washer (R) on saw spindle with the large flat
surface against the blade with beveled side facing out.
4. Thread blade clamping screw (S) into saw spindle by hand
(screw has left-hand threads and must be turned counterclockwise
to tighten, as shown in Figure 8).
5. Depress the blade lock (L) while turning the saw spindle with
the blade wrench until the blade lock engages and the blade
stops rotating (Fig. 7).
6. Tighten the blade clamping screw firmly with the blade wrench.
CAUTION: Never engage the blade lock while saw is running or
engage in an effort to stop the tool. Never turn the saw on while the
blade lock is engaged. Serious damage to your saw will result.
To Replace the Blade (Fig. 7):
1. To loosen the blade clamping screw (S), depress the blade lock
button (L) and turn the saw spindle with the blade wrench until
the blade lock engages and the blade stops rotating. With the
blade lock engaged, turn the blade clamping screw clockwise
with the blade wrench (screw has left-hand threads and must
be turned clockwise to loosen).
2. Remove the blade clamping screw (S) and outer clamp washer
(R) only. Remove old blade.
FIG. 7
L
G
3. Clean any sawdust that may have accumulated in the guard or
clamp washer area and check the condition and operation of the
lower blade guard as previously outlined. Do not lubricate this
area.
4. Select the proper blade for the application (see Blades). Always
use blades that are the correct size (diameter) with the proper
size and shape center hole for mounting on the saw spindle.
Always assure that the maximum recommended speed (rpm)
on the saw blade meets or exceeds the speed (rpm) of the
saw.
5. Follow steps 2 through 6 under To Install the Blade, making
sure that the blade will rotate in the proper direction.
LOWER BLADE GUARD (DC300 and DC310)
WARNING: The lower blade guard is a safety feature which
reduces the risk of serious personal injury. Never use the
saw if the lower guard is missing, damaged, misassembled or
not working properly. Do not rely on the lower blade guard to
12
FIG. 8 LOOSEN
(clockwise)
TIGHTEN
(counterclockwise)