Makita BJR181, BJR182 - Cordless Recipro Saw Manual

Explanation of general view

• 1-1. Red indicator
  1-2. Button
  1-3. Battery cartridge
• 2-1. Star marking
• 3-1. Shoe
  3-2. Shoe button
• 4-1. Shoe button
  4-2. Shoe
• 5-1. Lock-off button
  5-2. Switch trigger
• 6-1. Lamp
• 7-1. Hook
• 8-1. Blade clamp sleeve
  8-2. Released position
  8-3. Fixed position
• 9-1. Blade
• 10-1. Blade clamp lever
• 12-1. Limit mark
• 13-1. Brush holder cap
• 13-2. Screwdriver

SPECIFICATIONS

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

Intended use
The tool is intended for sawing wood, plastic and ferrous materials.

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

Model BJR181
Sound pressure level (L_pA): 86 dB(A)
Sound power level (L_WA): 97 dB(A)
Uncertainty (K): 3 dB(A)

Model BJR182
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
The vibration total value (tri-axial vector sum) determined according to EN60745:

Model BJR181
Work mode: cutting boards
Vibration emission (a_{h, B}): 12.5 m/s²
Uncertainty (K): 2.0 m/s²

Work mode: cutting wooden beams
Vibration emission (a_{h, WB}): 14.0 m/s²
Uncertainty (K): 1.5 m/s²

Model BJR182
Work mode: cutting boards
Vibration emission (a_{h, B}): 14.5 m/s²
Uncertainty (K): 1.5 m/s²

Work mode: cutting wooden beams
Vibration emission (a_{h, WB}): 12.5 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.

• 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).

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 RECIPRO SAW SAFETY WARNINGS

1. 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.
2. Use clamps or another practical way to secure and support the workpiece to a stable platform. Holding the work by hand or against your body leaves it unstable and may lead to loss of control.
3. Always use safety glasses or goggles. Ordinary eye or sun glasses are NOT safety glasses.
4. Avoid cutting nails. Inspect workpiece for any nails and remove them before operation.
5. Do not cut oversize workpiece.
6. Check for the proper clearance beyond the workpiece before cutting so that the blade will not strike the floor, workbench, etc.
7. Hold the tool firmly.
8. Make sure the blade is not contacting the workpiece before the switch is turned on.
9. Keep hands away from moving parts.
10. Do not leave the tool running. Operate the tool only when hand-held.
11. Always switch off and wait for the blade to come to a complete stop before removing the blade from the workpiece.
12. Do not touch the blade or the workpiece immediately after operation; they may be extremely hot and could burn your skin.
13. Do not operate the tool at no-load unnecessarily.
14. Always use the correct dust mask/respirator for the material and application you are working with.
15. 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

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

Installing or removing battery cartridge

• Always switch off the tool before installing or removing of the battery cartridge.
• Hold the tool and the battery cartridge firmly when installing or removing battery cartridge. Failure to hold the tool and the battery cartridge firmly may cause them to slip off your hands and result in damage to the tool and battery cartridge and a personal injury.

To remove the battery cartridge, slide it from the tool while sliding the button on the front of the cartridge.
To install the battery cartridge, align the tongue on the battery cartridge with the groove in the housing and slip it into place. Insert it all the way until it locks in place with a little click. If you can see the red indicator on the upper side of the button, it is not locked completely.

• Always install the battery cartridge fully until the red indicator cannot be seen. If not, it may accidentally fall out of the tool, causing injury to you or someone around you.
• Do not install the battery cartridge forcibly. If the cartridge does not slide in easily, it is not being inserted correctly.

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.

Adjusting the shoe

When the blade loses its cutting efficiency in one place along its cutting edge, reposition the shoe to utilize a sharp, unused portion of its cutting edge. This will help to lengthen the life of the blade. To reposition the shoe, push the shoe button in the "A" direction with a click and reposition as shown in the figure which allows you to make five-way adjustment. To secure the shoe, push the shoe button in the "B" direction with a click.

Switch action

• Before inserting the battery cartridge into the tool, always check to see that the switch trigger actuates properly and returns to the "OFF" position when released.
• When not operating the tool, depress the lock-off button from A side to lock the switch trigger in the OFF position.

To prevent the switch trigger from accidentally pulled, the lock-off button is provided.
To start the tool, depress the lock-off button from B side and pull the switch trigger.
Tool speed is increased by increasing pressure on the switch trigger. Release the switch trigger to stop. After use, always press in the lock-off button from A side.

Lighting up the front lamp (For BJR181)

• Do not look in the light or see the source of light directly. Pull the switch trigger to light up the lamp. The lamp keeps on lighting while the switch trigger is being pulled. The light automatically goes out 10 - 15 seconds after the switch trigger is released.

NOTE:

• Use a dry cloth to wipe the dirt off the lens of lamp. Be careful not to scratch the lens of lamp, or it may lower the illumination.

Hook (For BJR181)

• Depress the lock-off button from A side to lock the switch trigger in the OFF position. (See the section titled "switch action".)
• Never hook the tool at high location or on potentially unstable surface.

The hook is convenient for hanging the tool temporarily.
To use the hook, simply lift up hook until it snaps into the open position.
When not in use, always lower hook until it snaps into the closed position.

ASSEMBLY

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

Installing or removing the saw blade

• Always clean out all chips or foreign matter adhering to the blade, blade clamp and/or slider. Failure to do so may cause insufficient tightening of the blade, resulting in a serious injury.

To install the saw blade, always make sure that the blade clamp lever is in released position on the insulation cover before inserting the saw blade. If the blade clamp lever is in fixed position, rotate the blade clamp lever in the direction of the arrow so that it can be locked at the released position .

Insert the saw blade into the blade clamp as far as it will go. The blade clamp lever rotates and the saw blade is fixed. Make sure that the saw blade cannot be extracted even though you try to pull it out.

NOTE:

• If you do not insert the saw blade deep enough, the saw blade may be ejected unexpectedly during operation. This can be extremely dangerous.

If the lever is positioned inside the tool, switch on the tool just a second to let the blade out as shown in the figure.
Remove the battery cartridge from the tool. To remove the saw blade, rotate the blade clamp lever in the direction of the arrow fully. The saw blade is removed and the blade clamp lever is fixed at the released position .

NOTE:

• Keep hands and fingers away from the lever during the switching operation. Failure to do so may cause personal injuries.
• If you remove the saw blade without rotating the blade clamp lever fully, the lever may not be locked in the released position . In this case, rotate the blade clamp lever fully again, then make sure that the blade clamp lever locked at the released position .

OPERATION

• Always press the shoe firmly against the workpiece during operation. If the shoe is removed or held away from the workpiece during operation, strong vibration and/or twisting will be produced, causing the blade to snap dangerously.
• Always wear gloves to protect your hands from hot flying chips when cutting metal.
• Be sure to always wear suitable eye protection which conforms with current national standards.
• Always use a suitable coolant (cutting oil) when cutting metal. Failure to do so will cause premature blade wear.

Press the shoe firmly against the workpiece. Do not allow the tool to bounce. Bring the blade into light contact with the workpiece. First, make a pilot groove using a slower speed. Then use a faster speed to continue cutting.

MAINTENANCE

• 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

Remove and check the carbon brushes regularly. 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.
Use a screwdriver to remove the brush holder caps. Take out the worn carbon brushes, insert the new ones and secure the brush holder caps.

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

• 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.

• Recipro saw blades
• Makita genuine battery and charger
• Plastic carrying case

NOTE:

• Some items in the list may be included in the tool package as standard accessories. They may differ from country to country.