makita JR3051T Recipro Saw Instruction Manual

: June 4, 2024
: Makita

Table of Contents

makita JR3051T Recipro Saw
SPECIFICATIONS
- Power supply
SAFETY WARNINGS
FUNCTIONAL DESCRIPTION
ASSEMBLY
OPERATION
MAINTENANCE
OPTIONAL ACCESSORIES
References
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makita JR3051T Recipro Saw

makita-JR3051T-Recipro-Saw-product

SPECIFICATIONS

Model:	JR3051T
Length of stroke	30 mm
Strokes per minute	0 – 3,000 min-1
Max. cutting capacities	Pipe

(with 300 mm blade)

| 130 mm
Wood

(with 300 mm blade)

| 255 mm
Overall length| 447 mm
Net weight| 3.2 – 3.3 kg
Safety class| /II

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.
The weight may differ depending on the attachment(s). The lightest and heaviest combinations, according to EPTA-Procedure 01/2014, are shown in the table.

Intended use
The tool is intended for sawing wood, plastic, metal, and building materials with a strong impact. It is suitable for straight and curved cutting.

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 and can, therefore, also be used from sockets without earth wire.

Noise

The typical A-weighted noise level is determined according to EN62841-2-11:
Sound pressure level (LpA): 88 dB(A)
Sound power level (LWA): 99 dB (A)
Uncertainty (K): 3 dB(A)

NOTE:

The declared noise emission value(s) has been measured in accordance with a standard test method and may be used for comparing one tool with another.
The declared noise emission value(s) may also be used in a preliminary assessment of exposure.

WARNING:

Wear ear protection.
The noise emission during actual use of the power tool can differ from the declared value(s) depending on the ways in which the tool is used especially what kind of workpiece is processed.
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).

Vibration

The vibration total value (tri-axial vector sum) is determined according to EN62841-2-11:
Work mode: cutting boards
Vibration emission (ah,B) : 19.5 m/s2
Uncertainty (K) : 1.5 m/s2
Work mode: cutting wooden beams
Vibration emission (ah,WB) 19.5 m/s2
Uncertainty (K) : 1.5 m/s2

NOTE:

The declared vibration total value(s) has been measured in accordance with a standard test method and may be used for comparing one tool with another.
The declared vibration total value(s) 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 value(s) depending on the ways in which the tool is used especially what kind of workpiece is processed.
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).

EC Declaration of Conformity

For European countries only
The EC declaration of conformity is included as Annex A to this instruction manual.

SAFETY WARNINGS

General power tool safety warnings

WARNING:
Read all safety warnings, instructions, illustrations, and specifications provided with this power tool. Failure to follow all instructions listed below may result in electric shock, fire, and/or serious injury.

Save all warnings and instructions for future reference.
The term “power tool” in the warnings refers to your mains-operated (corded) power tool or battery-operated (cordless) power tool.

Recipro saw safety warnings

Hold the 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.
Use clamps or another practical way to secure and support the workpiece to a stable platform. Holding the workpiece by hand or against your body leaves it unstable and may lead to loss of control.
Always use safety glasses or goggles. Ordinary eyes or sunglasses are NOT safety glasses.
Avoid cutting nails. Inspect the workpiece for any nails and remove them before operation.
Do not cut the oversize workpieces.
Check for the proper clearance beyond the workpiece before cutting so that the blade will not strike the floor, workbench, etc.
Hold the tool firmly.
Make sure the blade is not contacting the workpiece before the switch is turned on.
Keep hands away from moving parts.
Do not leave the tool running. Operate the tool only when hand-held.
Always switch off and wait for the blade to come to a complete stop before removing the blade from the workpiece.
Do not touch the blade or the workpiece immediately after operation; they may be extremely hot and could burn your skin.
Do not operate the tool at no-load unnecessarily.
Always use the correct dust mask/respirator for the material and application you are working with.
Some material contains chemicals that may be toxic. Take caution to prevent dust inhalation and skin contact. Follow material supplier safety data.
Before the operation, make sure that there is no buried object such as an electric pipe, water pipe, or gas pipe in the workpiece. Otherwise, the recipro saw blade may touch them, resulting in an electric shock, electrical leakage, or gas leak.

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

WARNING:

Before plugging in the tool, always check to see that the switch trigger actuates properly and returns to the “OFF” position when released.
The switch can be locked in the “ON” position for ease of operator comfort during extended use. Apply caution when locking the tool in the “ON” position and maintain a firm grasp on the tool.

CAUTION:
Return the switch trigger to the “OFF” position in case of an accidental unplugging, blackout, or the power is cut unintentionally. Otherwise, the tool may start suddenly when the power returns and it may result in personal injury.

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.
For continuous operation, pull the switch trigger and then push in the lock button. To stop the tool from the locked position, pull the switch trigger fully, then release it.

Fig.1: 1. Switch trigger 2. Lock button

Hook

Optional accessory

CAUTION : Always be sure that the tool is switched off and unplugged when hanging the tool.
CAUTION : Never hang the tool at a high or potentially unstable location.
CAUTION : Do not hook the tool on your belt or other accessories. The recipro saw blade may contact your body and cause personal injury.

The hook is convenient for hanging the tool temporarily. To use the hook, simply lift up the hook until it snaps into the open position.
When not in use, always lower the hook until it snaps into the closed position. Fig.2: 1. Hook

Attach the hook by the following procedure.

Insert the tip of a slotted screwdriver into the notch and remove the cover by pressing and sliding it.
- Fig.3: 1. Notch 2. Cover
Insert the square nuts into the tool as shown in the figure.
Secure the hook with the screws.
- Fig.4: 1. Square nut 2. Hook 3. Screw

ASSEMBLY

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

Installing or removing the recipro saw blade

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

Before installing the recipro saw blade, always make sure that the blade clamp lever (part of the blade clamp sleeve) is in a released position on the insulation cover. If the blade clamp lever is in a fixed position, rotate the blade clamp lever in the direction of the arrow so that it can be locked at the released position. Fig.5

Blade clamp lever
Released position
Fixed position

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

Fig.6: 1. Recipro saw blade 2. Blade clamp sleeve

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

To remove the recipro saw blade, rotate the blade clamp lever in the direction of the arrow fully. The reci-pro saw blade is removed and the blade clamp lever is fixed at the released position.

Fig.7: 1. Recipro saw blade 2. Blade clamp lever

CAUTION:
Keep hands and fingers away from the lever during the switching operation. Failure to do so may cause personal injuries.

NOTE:

If you remove the recipro 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 is locked at the released position.
If the blade clamp lever is positioned inside the tool, switch on the tool for just a second to let the blade out. Unplug the tool before installing or removing the recipro saw blade.

OPERATION

CAUTION : Always hold the tool firmly with one hand on the insulation cover and the other on the switch handle.
CAUTION : 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.
CAUTION : Always wear gloves to protect your hands from hot flying chips when cutting metal.
CAUTION : Be sure to always wear suitable eye protection which conforms to current national standards.
CAUTION : Always use a suitable coolant (cutting oil) when cutting metal. Failure to do so will cause premature blade wear.
CAUTION : Do not quirk the blade during cutting.

Press the shoe firmly against the workpiece. Do not allow the tool to bounce. Bring the recipro saw blade into light contact with the workpiece. First, make a pilot groove using a slower speed. Then use a faster speed to continue cutting. Fig.8

NOTICE:
Do not cut the workpiece with the shoe away from the workpiece or without the shoe. Doing so increases the reaction force which may break the recipro saw blade.

MAINTENANCE

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

NOTICE:
Never use gasoline, benzine, thinner, alcohol or the like. Discoloration, deformation or cracks may result.

To maintain product SAFETY and RELIABILITY, repairs, and any other maintenance or adjustment should be performed by Makita Authorized or Factory Service Centers, always using Makita replacement parts.

Replacing carbon brushes

Fig.9: 1. Limit mark

Check the carbon brushes regularly. Replace them 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.
- Fig.10: 1. Brush holder cap

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