CAUTION:
•
Always use the side grip to ensure operating
safety when drilling in concrete, masonry, etc.
The side grip swings around to either side, allowing
easy handling of the tool in any position. Loosen the
side grip by turning it counterclockwise, swing it to the
desired position and then tighten it by turning clockwise.
Bit grease (optional accessory)
Coat the bit shank head beforehand with a small
amount of bit grease (about 0.5 -1 g; 0.02 - 0.04 oz.).
This chuck lubrication assures smooth action and lon-
ger service life.
Installing or removing the bit
2
1
► 1. Bit shank 2. Bit grease
Clean the bit shank and apply bit grease before install-
ing the bit.
Insert the bit into the tool. Turn the bit and push it in until
it engages.
1
2
► 1. Bit 2. Chuck cover
If the bit cannot be pushed in, remove the bit. Pull the
chuck cover down a couple of times. Then insert the bit
again. Turn the bit and push it in until it engages.
After installing, always make sure that the bit is securely
held in place by trying to pull it out.
To remove the bit, pull the chuck cover down all the way
and pull the bit out.
1
2
► 1. Bit 2. Chuck cover
Bit angle (when chipping, scaling or
demolishing)
HR4510C
► 1. Change lever 2. Pointer 3. Lock button
HR4511C
► 1. Pointer 2. Change lever 3. Lock button
The bit can be secured at 12 different angles. To change
the bit angle, depress the lock button and rotate the
change lever so that the pointer points to the
Turn the bit to the desired angle.
Depress the lock button and rotate the change lever so
that the pointer points to the
that the bit is securely held in place by turning it slightly.
7 ENGLISH
2
3
1
2
3
1
symbol.
symbol. Then make sure