5
15. Disconnect tools
When not in use, before servicing, and when
changing accessories such as blades, bits and cut-
ters.
16. Remove adjusting keys and wrenches
Form the habit of checking to see that keys and
adjusting wrenches are removed from tool before
turning it on.
17. Avoid unintentional starting
Don’t carry plugged-in tool with finger on switch.
Be sure switch is off when plugging in.
18. Outdoor use extension cords
When tool is used outdoors, use only extension
cords intended for use outdoors and so marked.
19. Stay alert
Watch what you are doing. Use common sense.
Do not operate tool when you are tired.
20. Check damaged parts
Before further use of the tool, a guard or other part
that is damaged should be carefully checked to
determine that it will operate properly and perform
its intended function. Check for alignment of mov-
ing parts, binding of moving parts, breakage of
parts, mounting, and any other conditions that may
affect its operation. A guard or other part that is
damaged should be properly repaired or replaced
by an authorized service center unless otherwise
indicated elsewhere in this instruction manual.
Have defective switches replaced by and autho-
rized service center. Do not use tool if switch does
not turn it on and off.
21. Warning
The use of any other accessory or attachment
other than recommended in this operating instruc-
tion or the catalog may present a risk of personal
injury.
22. Have your tool repaired by an expert
This electric appliance is in accordance with the
relevant safety rules. Repairing of electric appli-
ances may be carried out only by experts other-
wise it may cause considerable danger for the user.
ADDITIONAL SAFETY RULES
1. Wear a hard hat (safety helmet), safety
glasses and/or face shield. It is also highly
recommended that you wear a dust mask, ear
protectors and thickly padded gloves.
2. Under normal operation, the tool is designed
to produce vibration. The screws can come
loose easily, causing a breakdown or acci-
dent. Check tightness of screws carefully
before operation.
3. Always be sure you have a firm footing. Be
sure no one is below when using the tool in
high locations.
4. Hold the tool firmly with both hands. Always
use the side grip.
5. Keep hands away from rotating parts.
6. Do not leave the tool running. Operate the
tool only when hand-held.
7. When drilling into walls, floors or wherever
“live” electrical wires may be encountered,
DO NOT TOUCH ANY METAL PARTS OF THE
TOOL! Hold the tool only by the insulated
grasping surfaces to prevent electric shock if
you drill into a “live” wire.
8. Do not touch the bit or the workpiece immedi-
ately after operation; they may be extremely
hot and could burn your skin.
SAVE THESE INSTRUCTIONS.
OPERATING INSTRUCTIONS
CAUTION:
• Always be sure that the tool is switched off and
unplugged before installing or removing the side
grip, bit or other accessories.
Installing the side grip (Fig.1)
Always install the side grip on the tool and hold the
tool firmly with both hands during operation. The side
grip swings around to either side, allowing easy han-
dling of the tool in any position. Swing it to the
desired position and secure it by turning clockwise.
NOTE:
The side grip cannot swing 360° when the depth
gauge is installed.
Installing or removing the drill bit
For Model 8450, 8452
To install the bit, place it in the chuck as far as it will
go. Tighten the chuck by hand. Place the chuck key
in each of the three holes and tighten clockwise. Be
sure to tighten all three chuck holes evenly.
To remove the bit, turn the chuck key counterclock-
wise in just one hole, then loosen the chuck by hand.
After using the chuck key, be sure to return it to the
original position.
For Model 8451 (Fig.2)
Hold the ring and turn the sleeve counterclockwise to
open the chuck jaws. Place the bit in the chuck as far
as it will go. Hold the ring firmly and turn the sleeve
clockwise to tighten the chuck.
To remove the bit, hold the ring and turn the sleeve
counterclockwise.
Depth gauge (Fig.3)
The depth gauge is convenient for drilling holes of
uniform depth. Loosen the side grip and insert the
depth gauge into the hole in the side grip. Adjust the
depth gauge to the desired depth and tighten the side
grip.
