Makita 8414D Manual De Instrucciones página 6

Selecting the action mode (Fig. 5)
This tool employs an action mode changing lever. Select
one of the three modes suitable for your work needs by
using this lever.
For rotation only, slide the lever so that it points toward
the m mark on the tool body.
For rotation with hammering, slide the lever so that it
points toward the mark on the tool body.
For rotation with clutch, slide the lever so that it points
toward the mark on the tool body.
NOTE:
• When changing the position from
little difficult to slide the mode change lever. At this
time, switch on and run the tool for a second at the
position, then stop the tool and slide to your desired
position.
CAUTION:
• Always set the lever correctly to your desired mode
mark. If you operate the tool with the lever positioned
halfway between the mode marks, the tool may be
damaged.
Adjusting the fastening torque (Fig. 6)
The fastening torque can be adjusted in 16 steps by turn-
ing the adjusting ring so that its graduations are aligned
with the arrow on the tool body. The fastening torque is
minimum when the number 1 is aligned with the arrow,
and maximum when the number 16 is aligned with the
arrow.
Before actual operation, drive a trial screw into your
material or a piece of duplicate material to determine
which torque level is required for a particular application.
ASSEMBLY
CAUTION:
• Always be sure that the tool is switched off and the bat-
tery cartridge is removed before carrying out any work
on the tool.
Installing side grip (auxiliary handle) (Fig. 7)
Always use the side grip to ensure operating safety.
Install the side grip so that the protrusions on the grip
base fit in between the grooves on the barrel. Then
tighten the grip by turning clockwise.
Installing or removing driver bit or drill bit
Turn the sleeve counterclockwise to open the chuck jaws.
Place the bit in the chuck as far as it will go. Turn the
sleeve clockwise to tighten the chuck. To remove the bit,
turn the sleeve counterclockwise. (Fig. 8)
When not using the driver bit, keep it in the bit holders.
Bits 45 mm long can be kept there. (Fig. 9)
Adjustable depth rod (Fig. 10)
The adjustable depth rod is used to drill holes of uniform
depth. Loosen the clamp screw, set to desired position,
then tighten the clamp screw.
6
OPERATION
Hammer drilling operation
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 embed-
ded 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
to m, it may be a
severe injury.
First, slide the action mode change lever so that it points
to the
any torque levels for this operation.
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 pres-
sure gives best results. Keep the tool in position and pre-
vent 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.
Blow-out bulb (optional accessory) (Fig. 11)
After drilling the hole, use the blow-out bulb to clean the
dust out of the hole.
Screwdriving operation (Fig. 12)
First, slide the action mode change lever so that it points
to the
torque level for your work. Then proceed as follows.
Place the point of the driver bit in the screw head and
apply pressure to the tool. Start the tool slowly and then
increase the speed gradually. Release the switch trigger
as soon as the clutch cuts in.
NOTE:
• Make sure that the driver bit is inserted straight in the
screw head, or the screw and/or bit may be damaged.
• When driving wood screws, predrill pilot holes to make
driving easier and to prevent splitting of the workpiece.
See the chart.
NOTE:
• If the tool is operated continuously until the battery car-
tridge has discharged, allow the tool to rest for 15 min-
utes before proceeding with a fresh battery.
marking. The adjusting ring can be aligned in
marking. Adjust the adjusting ring to the proper
Nominal diameter of
wood screw (mm)
3.1
3.5
3.8
4.5
4.8
5.1
5.5
5.8
6.1
Recommended size of
pilot hole (mm)
2.0 – 2.2
2.2 – 2.5
2.5 – 2.8
2.9 – 3.2
3.1 – 3.4
3.3 – 3.6
3.6 – 3.9
4.0 – 4.2
4.2 – 4.4