Makita DHP458Z User Manual

9
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 screw, predrill a pilot hole 2/3
the diameter of the screw. It makes driving easier
and prevents splitting of the workpiece.
• If the tool is operated continuously until the battery
cartridge has discharged, allow the tool to rest for
15 minutes before proceeding with a fresh battery.
Drilling operation
CAUTION:
• Pressing excessively on the tool will not speed up
the drilling. In fact, this excessive pressure will only
serve to damage the tip of your bit, decrease the
tool performance and shorten the service life of the
tool.
• There is a tremendous force exerted on the tool/bit
at the time of hole break through. Hold the tool
firmly and exert care when the bit begins to break
through the workpiece.
• A stuck bit can be removed simply by setting the
reversing switch to reverse rotation in order to back
out. However, the tool may back out abruptly if you
do not hold it firmly.
• Always secure small workpieces in a vise or similar
hold-down device.
• If the tool is operated continuously until the battery
cartridge has discharged, allow the tool to rest for
15 minutes before proceeding with a fresh battery.
First, slide the action mode change lever so that it points
to the
marking. The adjusting ring can be aligned in
any torque levels for this operation. Then proceed as
follows.
Drilling in wood
When drilling in wood, the best results are obtained with
wood drills equipped with a guide screw. The guide
screw makes drilling easier by pulling the bit into the
workpiece.
Drilling in metal
To prevent the bit from slipping when starting a hole,
make an indentation with a center-punch and hammer at
the point to be drilled. Place the point of the bit in the
indentation and start drilling.
Use a cutting lubricant when drilling metals. The
exceptions are iron and brass which should be drilled dry.
MAINTENANCE
CAUTION:
• Always be sure that the tool is switched off and the
battery cartridge is removed before attempting to
perform inspection or maintenance.
• Never use gasoline, benzine, thinner, alcohol or the
like. Discoloration, deformation or cracks may
result.
Replacing carbon brushes
1
006258
Replace when they wear down to the limit mark. Keep
the carbon brushes clean and free to slip in the holders.
Both carbon brushes should be replaced at the same
time. Use only identical carbon brushes.
1
2
012705
Use a screwdriver to remove two screws then remove
the rear cover.
1
2
3
012706
Raise the arm part of the spring and then place it in the
recessed part of the housing with a slotted bit
screwdriver of slender shaft or the like.
1. Arm
2. Spring
3. Recessed part
1. Rear cover
2. Screws
1. Limit mark

Makita DHP458Z Specifications

General

Number of gears	2
Torque settings	21
Idle speed (max)	2000 RPM
Screw diameter (max)	13 mm
Impact rate (low speed)	6000 bpm
Impact rate (high speed)	30000 bpm
Drilling diameter in wood (max)	65 mm
Maximum torque (hard applications)	91 N⋅m
Maximum torque (soft applications)	58 N⋅m
Drilling diameter in concrete (max)	16 mm
Soft grip	Yes
Chuck type	Keyless
Product design	Pistol grip drill
Vibration emission	1.5 m/s²
Product color	Black, Blue
Power source	Battery
Charging time	22 min
Battery voltage	18 V

Weight and Dimensions

Depth	225 mm
Width	79 mm
Height	259 mm
Weight	2300 g