Prior To Operation; Installing Dust Collection Hose - Hitachi CM12Y Handling Instructions Manual

OPTIONAL ACCESSORIES (sold separately)
(1) Diamond wheels for dry cutting (segment type)
Type
For concrete and masonry
For abrasive materials
(2) Cutting wheels
Type
Metal cutting wheel
Masonry cutting wheel
(3) Wheel washer (A) (hole diameter 25.4mm)
Optional accesories are subject to change without notice.
APPLICATION
Cutting or scribing concrete
Cutting or scribing tile
Cutting or scribing stone
Cutting or scribing roof tile
Cutting steel

PRIOR TO OPERATION

1. Power source
Ensure that the power source to be utilized con-
forms to the power requirements specified on the
product nameplate.
2. Power switch
Ensure that the power switch is in the OFF position.
If the plug is connected to a power receptacle while
the power switch is in the ON position, the power
tool will start operating immediately, which could
cause a serious accident.
3. Extension cord
When the work area is removed from the power
source, use an extension cord of sufficient thick-
ness and rated capacity. The extension cord should
be kept as short as practicable.
4. Checking and installing the diamond wheel
Check the diamond wheel is a specified one and
is not cracked, broken or bent. Check the diamond
wheel is installed securely. For installation, refer to
"Installing/removing diamond wheel".
5. Check that the knob used to secure the wheel guard
is tight.
Make sure that the knob that secures the wheel
guard is adequately tight.
If this knob is loose, it may result in injury to the
operator. (Fig. 4)

INSTALLING DUST COLLECTION HOSE

When cutting a material which generates cutting dust,
use the dust collection hose as follows:
(1) Remove the rubber cab and install the accessory
hose. (Fig. 1)
Wheel dia. (mm) Code No.
985618
305
985619
Wheel dia. (mm) Code No.
985609
985608
305
985611
985610
(2) Install the dust collector hose for the power tool
in the accessory hose. (Fig. 1)
CAUTION
Do not use the dust collection hose when cutting
metal.
Always install a rubber cap on the dust collection
adapter when the dust collection hose is not used.
INSTALLING/REMOVING DIAMOND WHEEL
1. Installation
(1) Wipe the cutting dust from the spindle and wash-
ers.
(2) Make sure the rotation direction of the diamond
wheel conforms to the direction indicated on the
wheel guard and install the diamond wheel as
shown in Fig. 2 and 3.
• Install the wheel washer (B) (silver) on the inner
side when the hole diameter of the diamond
wheel is 22.2 mm.
• Install the wheel washer (C) (black) on the inner
side when the hole diameter of the diamond
wheel is 20.0 mm.
(3) Press the lock pin and secure the spindle. Tighten
the bolt adequately with the provided wrench.
(Fig. 5 and 6)
NOTE
Always use the provided wrench to secure the bolt.
Be careful because the bolt tightens to the left
(counterclockwise direction) to prevent it from being
loosened during cutting. (Fig. 6)
2. Removal
Remove the bolt with the provided wrench and
remove the diamond wheel. (Fig. 6)
CUTTING
1. Wheel guard adjustment (Fig. 4)
Adjust the wheel guard angle with the knob so dust
and debris from the material or sparks do not
contact the operator during the cutting operation.
2. Cutting Procedures (Fig. 7)
(1) Place this tool on the material to be cut and align
the premarked line and the diamond wheel.
English
Thickness (mm) Hole dia. (mm)
2.8
3.0
Hole dia. (mm) per pkg.
22.2
25.4
22.2
25.4
22.2
10 pcs.
30