9
• Never use gasoline, benzine, thinner, alcohol or the
like. Discoloration, deformation or cracks may result.
Replacing carbon brushes
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.
(Fig. 15)
Use a screwdriver to remove two screws then remove the
rear cover.
(Fig. 16)
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.
(Fig. 17)
Use pliers to remove the carbon brush caps of the carbon
brushes. Take out the worn carbon brushes, insert the
new ones and replace the carbon brush caps in reverse.
(Fig. 18)
Make sure that the carbon brush caps have fit into the
holes in brush holders securely.
(Fig. 19)
Reinstall the rear cover and tighten two screws securely.
To maintain product SAFETY and RELIABILITY, repairs,
any other maintenance or adjustment should be
performed by Makita Authorized Service Centers, always
using Makita replacement parts.
OPTIONAL ACCESSORIES
CAUTION:
• These accessories or attachments are recommended
for use with your Makita tool specified in this manual.
The use of any other accessories or attachments might
present a risk of injury to persons. Only use accessory
or attachment for its stated purpose.
If you need any assistance for more details regarding
these accessories, ask your local Makita Service Center.
• Drill bits
• Hammer drill bits
• Screw bits
• Blow-out bulb
• Safety goggles
• Various type of Makita genuine batteries and chargers
• Grip assembly
• Depth rod
• Hook
• Rubber pad assembly
• Wool bonnet
• Foam polishing pad
NOTE:
• Some items in the list may be included in the tool
package as standard accessories. They may differ
from country to country.
For Model DHP441
Noise
ENG102-3
The typical A-weighted noise level determined according
to EN60745:
Sound pressure level (L
pA
): 85 dB (A)
Sound power level (L
WA
): 96 dB (A)
Uncertainty (K): 3 dB (A)
Wear ear protection.
Vibration
ENG203-2
The vibration total value (tri-axial vector sum) determined
according to EN60745:
Work mode: impact drilling into concrete
Vibration emission (a
h,ID
): 10.5 m/s
2
Uncertainty (K): 1.5 m/s
2
ENG302-2
Work mode: drilling into metal
Vibration emission (a
h,D
) : 2.5 m/s
2
or less
Uncertainty (K): 1.5 m/s
2
For Model DHP451
Noise
ENG102-3
The typical A-weighted noise level determined according
to EN60745:
Sound pressure level (L
pA
): 86 dB (A)
Sound power level (L
WA
): 97 dB (A)
Uncertainty (K): 3 dB (A)
Wear ear protection.
Vibration
ENG203-2
The vibration total value (tri-axial vector sum) determined
according to EN60745:
Work mode: impact drilling into concrete
Vibration emission (a
h,ID
): 10.0 m/s
2
Uncertainty (K): 2.5 m/s
2
ENG302-2
Work mode: drilling into metal
Vibration emission (a
h,D
): 2.5 m/s
2
or less
Uncertainty (K): 1.5 m/s
2
ENG901-1
• The declared vibration emission value has been
measured in accordance with the standard test method
and may be used for comparing one tool with another.
• The declared vibration emission value may also be
used in a preliminary assessment of exposure.
WARNING:
• The vibration emission during actual use of the power
tool can differ from the declared emission value
depending on the ways in which the tool is used.
• Be sure to identify safety measures to protect the
operator that are based on an estimation of exposure in
the actual conditions of use (taking account of all parts
of the operating cycle such as the times when the tool
is switched off and when it is running idle in addition to
the trigger time).
For European countries only
ENH101-17
EC Declaration of Conformity
Makita declares that the following Machine(s):
Designation of Machine:
Cordless Percussion-Driver Drill
Model No./ Type: DHP441, DHP451
Conforms to the following European Directives:
2006/42/EC
They are manufactured in accordance with the following
Standard or standardized documents:
EN60745
