Hitachi C 7WDM Safety And Instruction Manual page 17

Hammer
Knockout
Hollow support
Blade
Fig. 10
Mounting the blade (Fig. 11-a, Fig. 11-b Fig. 11-c, and Fig. 11-d)
WARNING:
To avoid serious accident, ensure the switch is in the OFF position
and disconnect the plug from the receptacle during maintenance and
inspection.
(1) Unplug the saw from the outlet.
(2) Place the provided blade wrench over the arbor bolt.
(3) Press the arbor lock button, holding it in fi rmly while turning the blade wrench. This
will engage the arbor lock allowing the arbor bolt to be loosened with the blade
wrench. Continue to hold the arbor lock button while turning the wrench clockwise
to loosen the arbor bolt.
(4) Use the lower blade guard lifting lever to raise the lower blade guard.
(5) Remove the arbor bolt and the outer blade collar. Do not remove the inner blade
collar.
NOTE
: Pay attention to the pieces removed, noting their position and
direction they face. Wipe the blade collars clean of any sawdust before
installing a new blade.
(6) Install a 7-1/4" (184 mm) blade with a diamond-shaped arbor center, making sure
the rotation arrow on the blade matches the clockwise rotation arrow on the upper
blade guard.
(7) Place the blade onto the arbor and against the inner blade collar. Then, place the
outer blade collar and thread the arbor bolt conterclockwise onto the arbor.
NOTE
:
* Always ensure the diamond-shaped arbor center of the blade aligns
with the raised diamond-shaped arbor center on the inner blade collar.
* The fl at side of the outer blade collar must be placed against the blade.
Do not install the outer collar with the curved side against the blade.
(8) Place the blade wrench on the arbor bolt.
(9) Press the arbor lock button, holding it in fi rmly while turning the blade wrench
counterclockwise. Continue to press it in while tightening the arbor bolt securely.
NOTE
: Tighten so that the diamond-shaped arbor center of blade does not
shift the diamond type protrusion of the inner blade collar. (Fig. 11-d)
(10) Slowly release the lower blade guard lifting lever.
(1) Place the blade on a hollow support as shown in
Fig. 10.
(2) Put a cushion block on the center of the knockout.
NOTE:
than the center hole of the knockout and be smaller
than the knockout.
(3) Use a hammer to knock the cushion block, so the
Cushion block
knockout will fall with the cushion block.
(4) If the knockout sticks on the blade, remove the
knockout by needle-nose pliers or by hands worn with
work gloves.
The size of the cushion block must be larger
English
17