Makita BHP343, BHP453 - Cordless Hammer Driver Drill Manual

Explanation of general view

• 1-1. Red indicator
  1-2. Button
  1-3. Battery cartridge
• 6-1. Adjusting ring
  6-2. Action mode changing ring
  6-3. Graduation
  6-4. Arrow
• 7-1. Adjusting ring
  7-2. Action mode changing ring
  7-3. Graduation
  7-4. Arrow

SPECIFICATIONS

Model		BHP343	BHP453
Capacities	Concrete	10 mm	13 mm
	Steel	10 mm	13 mm
	Wood	25 mm	36 mm
	Wood screw	5.1 mm x 63 mm	6 mm x 75 mm
	Machine screw	6 mm
No load speed (min-1)	High (2)	0 - 1,300
	Low (1)	0 - 400
Blows per minute (min-1)	High (2)	0 - 19,500
	Low (1)	0 - 6,000
Overall length		211 mm	232 mm
Net weight		1.4 kg	1.7 kg
Rated voltage		D.C. 14.4 V	D.C. 18 V

Intended use

The tool is intended for impact drilling in brick, concrete and stone as well as for drilling without impact in wood, metal, ceramic and plastic.

Noise

The typical A-weighted noise level determined according to EN60745:
Model BHP343
Sound pressure level (L_pA): 80 dB (A)
Uncertainty (K): 3 dB (A)
The noise level under working may exceed 80 dB (A).

Model BHP453
Sound pressure level (L_pA): 83 dB (A)
Sound power level (L_WA): 94 dB (A)
Uncertainty (K): 3 dB (A)
Wear ear protection

Vibration

The vibration total value (tri-axial vector sum) determined according to EN60745:
Model BHP343
Work mode: impact drilling into concrete
Vibration emission (a_{h, ID}): 10.0 m/s²
Uncertainty (K): 2.5 m/s²
Work mode: drilling into metal
Vibration emission (a_{h, D}): 2.5 m/s² or less
Uncertainty (K): 1.5 m/s²

Model BHP453
Work mode: impact drilling into concrete
Vibration emission (a_{h, ID}): 10.0 m/s²
Uncertainty (K): 1.5 m/s²
Work mode: drilling into metal
Vibration emission (a_{h, D}): 2.5 m/s² or less
Uncertainty (K): 1.5 m/s²

General Power Tool Safety Warnings

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

CORDLESS HAMMER DRIVER DRILL SAFETY WARNINGS

1. Wear ear protectors with impact drilling. 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. 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. Hold power tool by insulated gripping surfaces, when performing an operation where the fastener may contact hidden wiring. Fasteners contacting a "live" wire may make exposed metal parts of the power tool "live" and could give the operator an electric shock.
5. Always be sure you have a firm footing.
   Be sure no one is below when using the tool in high locations.
6. Hold the tool firmly.
7. Keep hands away from rotating parts.
8. Do not leave the tool running. Operate the tool only when hand-held.
9. Do not touch the bit or the workpiece immediately after operation; they may be extremely hot and could burn your skin.
10. Some material contains chemicals which may be toxic. Take caution to prevent dust inhalation and skin contact. Follow material supplier safety data.

DO NOT let comfort or familiarity with 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.

IMPORTANT SAFETY INSTRUCTIONS

FOR BATTERY CARTRIDGE

1. Before using battery cartridge, read all instructions and cautionary markings on
   1. battery charger,
   2. battery,
   3. product using battery.
2. Do not disassemble battery cartridge.
3. If operating time has become excessively shorter, stop operating immediately. It may result in a risk of overheating, possible burns and even an explosion.
4. If electrolyte gets into your eyes, rinse them out with clear water and seek medical attention right away. It may result in loss of your eyesight.
5. Do not short the battery cartridge:
   1. Do not touch the terminals with any conductive material.
   2. Avoid storing battery cartridge in a container with other metal objects such as nails, coins, etc.
   3. Do not expose battery cartridge to water or rain.

A battery short can cause a large current flow, overheating, possible burns and even a breakdown.

6. Do not store the tool and battery cartridge in locations where the temperature may reach or exceed 50°C (122°F).
7. Do not incinerate the battery cartridge even if it is severely damaged or is completely worn out. The battery cartridge can explode in a fire.
8. Be careful not to drop or strike battery.
9. Do not use a damaged battery.

Tips for maintaining maximum battery life

1. Charge the battery cartridge before completely discharged.
   Always stop tool operation and charge the battery cartridge when you notice less tool power.
2. Never recharge a fully charged battery cartridge.
   Overcharging shortens the battery service life.
3. Charge the battery cartridge with room temperature at 10°C - 40°C (50°F - 104°F). Let a hot battery cartridge cool down before charging it.
4. Charge the battery cartridge once in every six months if you do not use it for a long period of time.

FUNCTIONAL DESCRIPTION

Installing or removing battery cartridge

Battery protection system (Lithium-ion battery with star marking)

Lithium-ion batteries with a star marking are equipped with a protection system. This system automatically cuts off power to the tool to extend battery life.

The tool will automatically stop during operation if the tool and/or battery are placed under one of the following conditions:

• Overloaded:
  The tool is operated in a manner that causes it to draw an abnormally high current.
  In this situation, release the trigger switch on the tool and stop the application that caused the tool to become overloaded. Then pull the trigger switch again to restart.
  If the tool does not start, the battery is overheated. In this situation, let the battery cool before pulling the trigger switch again.
• Low battery voltage:
  The remaining battery capacity is too low and the tool will not operate. In this situation, remove and recharge the battery.

Switch action

To start the tool, simply pull the switch trigger. Tool speed is increased by increasing pressure on the switch trigger. Release the switch trigger to stop.

Reversing switch action

This tool has a reversing switch to change the direction of rotation. Depress the reversing switch lever from the A side for clockwise rotation or from the B side for counterclockwise rotation.
When the reversing switch lever is in the neutral position, the switch trigger cannot be pulled.

Speed change

To change the speed, first switch off the tool and then slide the speed change lever to the "2" side for high speed or "1" side for low speed. Be sure that the speed change lever is set to the correct position before operation. Use the right speed for your job.

Selecting the action mode

This tool employs an action mode changing ring. Select one of the three modes suitable for your work needs by using this ring.
For rotation only, turn the ring so that the arrow on the tool body points toward the mark on the ring.
For rotation with hammering, turn the ring so that the arrow points toward the mark on the ring.
For rotation with clutch, turn the ring so that the arrow points toward the mark on the ring.

Adjusting the fastening torque

The fastening torque can be adjusted in 16 steps by turning 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

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.

OPERATION

Hammer drilling operation

First, turn the action mode changing ring so that the arrow on the tool body points to the marking. The adjusting ring can be aligned in 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 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.

Blow-out bulb (optional accessory)

After drilling the hole, use the blow-out bulb to clean the dust out of the hole.

Screwdriving operation

First, turn the action mode changing ring so that the arrow on the tool body points to the marking. Adjust the adjusting ring to the proper 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:

• When driving wood screws, predrill pilot holes to make driving easier and to prevent splitting of the workpiece. See the chart.

  Nominal diameter of wood screw (mm)	Recommended size of pilot hole (mm)
  3.1	2.0 - 2.2
  3.5	2.2 - 2.5
  3.8	2.5 - 2.8
  4.5	2.9 - 3.2
  4.8	3.1 - 3.4
  5.1	3.3 - 3.6
  5.5	3.7 - 3.9
  5.8	4.0 - 4.2
  6.1	4.2 - 4.4

Drilling operation

First, turn the adjusting ring so that the pointer points to the marking. Then proceed as follows.

• 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.

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

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

If you need any assistance for more details regarding these accessories, ask your local Makita Service Center.

NOTE: