Makita 8419B-2, Instruction Manual

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5
For drilling in wood, metal or plastic materials, turn the
change ring in the direction of single arrow indication.
Use a conventional bit for drilling in wood or metal.
ASSEMBLY
CAUTION:
•
Always be sure that the tool is switched off and
unplugged before carrying out any work on the
tool.
Installing side grip (auxiliary handle)
010518
Always use the side grip to ensure operating safety.
The side grip swings around to either side, allowing easy
handling of the tool in any position. Loosen the wing nut,
swing the side grip to the desired position and then
tighten the wing nut.
Installing or removing drill bit
1
010516
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 counterclockwise
in just one hole, then loosen the chuck by hand. After
using the chuck key, be sure to return to the original
position.
Depth gauge
1
010517
The depth gauge is convenient for drilling holes of
uniform depth. Loosen the clamp screw and adjust the
depth gauge to the desired depth. After adjusting,
tighten the clamp screw.
NOTE:
•
The depth gauge cannot be used at the position
where the depth gauge strikes against the tool
body.
OPERATION
Hammer drilling operation
010521
CAUTION:
•
There is a tremendous and sudden twisting force
exerted on the tool/bit at the time of hole
break-through, when the hole becomes clogged
with chips and particles, or when striking
reinforcing rods embedded in the concrete. Always
use the side grip (auxiliary handle) and firmly hold
the tool by both side grip and switch handle during
operations. Failure to do so may result in the loss
of control of the tool and potentially severe injury.
Be sure to use a tungsten-carbide tipped bit.
Position the bit at the desired location for the hole, then
pull the switch trigger. Do not force the tool. Light
pressure gives best results. Keep the tool in position and
prevent it from slipping away from the hole.
Do not apply more pressure when the hole becomes
clogged with chips or particles. Instead, run the tool at
an idle, then remove the bit partially from the hole. By
repeating this several times, the hole will be cleaned out
and normal drilling may be resumed.
1. Depth gauge
1. Chuck key