Makita HR4002 Rotary Hammer Instruction Manual

HR4002 Rotary Hammer
Instruction Manual

Explanation of general view 

SPECIFICATIONS

• Due to our continuing program of research and development, the specifications herein are subject to change without notice.
• Specifications may differ from country to country.
• Weight according to EPTA-Procedure 01/2003

Intended use
The tool is intended for hammer drilling in brick, concrete, and stone as well as for chiseling work.

Power supply
The tool should be connected only to a power supply of the same voltage as indicated on the nameplate, and can only be operated on a single-phase AC supply. They are double-insulated in accordance with European Standard and can, therefore, also be used from sockets without earth wire.

Noise
The typical A-weighted noise level is determined according to EN60745:

Sound pressure level (LpA): 92 dB(A)
Sound power level (LWA): 103 dB(A)
Uncertainty (K) : 3 dB(A)
Wear ear protection

Vibration
The vibration total value (tri-axial vector sum) determined according to EN60745:
Work mode : chiseling function
Vibration emission (a_h.cH_eq) : 10.5 m/s²
Uncertainty (K) : 1.5 m/s²
Work mode : hammer drilling into concrete
Vibration emission (a_h._HD) : 17.5: m/s²
Uncertainty (K) : 1.5 m/s2

• 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 is 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
EC Declaration of Conformity
We Makita Corporation as the responsible manufacturer declares that the following Makita machine(s):
Designation of Machine:
Rotary Hammer
Model No./ Type: HR4002 are of series production and Conforms to the following European Directives:
98/37/EC until 28th December 2009 and then with 2006/42/EC from 29th December 2009
And are manufactured in accordance with the following standards or standardized documents:
EN60745
The technical documentation is kept by our authorized representative in Europe who is:
Makita International Europe Ltd,
Michigan, Drive, Tongwell,
Milton Keynes, MK15 8JD, England

30th January 2009
Tomoyasu Kato
Director
Makita Corporation
3-11-8, Sumiyoshi-Cho,
Anjo, Aichi, JAPAN

General Power Tool Safety  Warnings

WARNING Read all safety warnings and all instructions. Failure to follow the warnings and instructions may result in electric shock, fire, and/or serious injury.
Save all warnings and instructions for future reference.

ROTARY HAMMER SAFETY WARNINGS

1. Wear ear protectors. Exposure to noise can cause hearing loss.
2. Use auxiliary handle(s), if supplied with the tool. Loss of control can cause personal injury.
3. Hold power tool by insulated gripping surfaces, when performing an operation where the cutting accessory may contact hidden wiring or its own cord. Cutting accessory contacting a “live” wire may make exposed metal parts of the power tool “live” and could give the operator an electric shock.
4. Wear a hard hat (safety helmet), safety glasses, and/or face shield. Ordinary eyes or sunglasses are NOT safety glasses. It is also highly recommended that you wear a dust mask and thickly padded gloves. 
5. Be sure the bit is secured in place before operation.
6. Under normal operation, the tool is designed to produce vibration. The screws can come loose easily, causing a breakdown or accident. 
   Check the tightness of screws carefully before operation. 
7. In cold weather or when the tool has not been used for a long time, let the tool warm up for a while by operating it under no load. This will loosen up the lubrication. Without proper warm-up, hammering operation is difficult.
   
8. Always be sure you have a firm footing. Be sure no one is below when using the tool in high locations.
9. Hold the tool firmly with both hands. 
10. Keep hands away from moving parts.
11. Do not leave the tool running. Operate the tool only when hand-held. 
12. Do not point the tool at anyone in the area when operating. The bit could fly out and injure someone seriously. 
13. Do not touch the bit or parts close to the bit immediately after operation; they may be extremely hot and could burn your skin. 
14. Some material contains chemicals that may be toxic. Take caution to prevent dust inhalation and skin contact. Follow material supplier safety data.
    

SAVE THESE INSTRUCTIONS. 

WARNING:
DO NOT let comfort or familiarity with the product (gained from repeated use) replace strict adherence to safety rules for the subject product. MISUSE or failure to follow the safety rules stated in this instruction manual may cause serious personal injury. 

FUNCTIONAL DESCRIPTION

CAUTION:

• Always be sure that the tool is switched off and unplugged before adjusting or checking the function on the tool.

Switch action
Fig.1
CAUTION:

• Before plugging in the tool, always check to see that the switch trigger actuates properly and returns to the “OFF” position when released.
  To start the tool, simply pull the switch trigger. Release the switch trigger to stop.

Selecting the action mode
Rotation with hammering
Fig.2
For drilling in concrete, masonry, etc., depress the lock button and rotate the change lever so that the pointer points to the symbol. Use a tungsten-carbide tipped bit.

Hammering only
Fig.3
For chipping, scaling or demolition operations, depress the lock button and rotate the change lever so that the pointer points to the symbol. Use a bull point, cold chisel,  scaling chisel, etc.

CAUTION:

• Do not rotate the change lever when the tool is running under load. The tool will be damaged.
• To avoid rapid wear on the mode change mechanism, be sure that the change lever is always positively located in one of the two or three action mode positions.

Torque limiter
The torque limiter will actuate when a certain torque level is reached. The motor will disengage from the output shaft. When this happens, the bit will stop turning.

CAUTION:

• As soon as the torque limiter actuates, switch off the tool immediately. This will help prevent premature wear of the tool.

ASSEMBLY

CAUTION:

• Always be sure that the tool is switched off and unplugged before carrying out any work on the tool.

Side handle (accessory)
Fig.4
CAUTION:

• Use the side handle only when chipping, scaling or demolishing. Do not use it when drilling in concrete, masonry, etc. The tool cannot be held properly with this side handle when drilling.

The side handle can be swung 360° on the vertical and secured at any desired position. It also secures at eight different positions back and forth on the horizontal. Just loosen the clamp nut to swing the side handle to the desired position. Then tighten the clamp nut securely.

Fig.5
Side grip
Fig.6
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 longer service life.

Installing or removing the bit
Fig.7
Clean the bit shank and apply bit grease before installing the bit.
Insert the bit into the tool. Turn the bit and push it in until it engages.

Fig.8
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.

Fig.9
Bit angle (when chipping, scaling or
demolishing)
Fig.10
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 symbol.
Turn the bit to the desired angle.
Depress the lock button and rotate the change lever so that the pointer points to the symbol. Then make sure that the bit is securely held in place by turning it slightly.

Fig.11
Depth gauge
Fig.12
The depth gauge is convenient for drilling holes of uniform depth. Insert the depth gauge into the hole in the grip base. Adjust the depth gauge to the desired depth and then tighten the clamp screw to secure the depth gauge.
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 firmly.

NOTE:

• The depth gauge cannot be used at the position where the depth gauge strikes against the tool body.
• The depth gauge cannot be used at the position where the depth gauge strikes against the gear housing/motor housing.

OPERATION

Hammer drilling operation
Fig.13
Set the change lever to the symbol.
Position the bit at the desired location for the hole, then pull the switch trigger. Do not force the tool. Light pressure gives the 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.

CAUTION:

• When the bit begins to break through concrete or if the bit strikes reinforcing rods embedded in concrete, the tool may react dangerously. Maintain good balance and safe footing while holding the tool firmly with both hands to prevent dangerous reactions.

Blow-out bulb (optional accessory)
Fig.14
After drilling the hole, use the blow-out bulb to clean the dust out of the hole.

Chipping/Scaling/Demolition
Fig.15
Set the change lever to the symbol.
Hold the tool firmly with both hands. Turn the tool on and apply slight pressure on the tool so that the tool will not bounce around, uncontrolled. Pressing very hard on the tool will not increase efficiency.

MAINTENANCE

CAUTION:

• Always be sure that the tool is switched off and unplugged before attempting to perform inspection or maintenance.

Lubrication 

CAUTION:

• This servicing should be performed by Makita Authorized Service Centers only.

This tool requires no hourly or daily lubrication because it has a grease-packed lubrication system. It should be relubricated regularly. Send the complete tool to Makita Authorized or Factory Service Center for this lubrication service.
To maintain product SAFETY and RELIABILITY, repairs, and any other maintenance or adjustment should be performed by Makita Authorized Service Centers, always using  Makita replacement parts.

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 with more details regarding these accessories, ask your local Makita Service Center.

• SDS-Max Carbide-tipped bits
• SDS-Max bull point
• SDS-MAX cold chisel
• SDS-MAX scaling chisel
• SDS-MAX tile chisel
• SDS-MAX clay spade
• Hammer grease
• Bit grease
• Side handle
• Side grip
• Depth gauge
• Blow-out bulb
• Safety goggles
• Carrying case

Makita Corporation Anjo, Aichi, Japan