Makita 9557PBX1 4-1/2" Paddle Switch Cut-Off/Angle Grinder Tool with Case Instruction Manual

1. Introduction

This manual provides essential information for the safe and effective operation, setup, and maintenance of your Makita 9557PBX1 4-1/2" Paddle Switch Cut-Off/Angle Grinder Tool with Case. This powerful 7.5 AMP angle grinder is designed for cutting, grinding, and polishing applications, offering high performance in a compact and durable design.

Figure 1: Makita 9557PBX1 Angle Grinder Tool with Case and accessories.

2. Product Overview

The Makita 9557PBX1 is engineered for industrial performance, combining a robust motor with user-friendly features. Key components and features include:

• Powerful 7.5 AMP Motor: Delivers high output power for demanding tasks.
• Compact Design: Weighs only 4.5 pounds for enhanced maneuverability.
• Paddle Switch: Features an extra-large paddle switch for comfortable operation and a lock-on/off feature for continuous use.
• Labyrinth Construction: Seals and protects the motor and bearings from dust and debris, extending tool life.
• Protective Zig-Zig Varnish: Seals the armature from dust and debris.
• AC/DC Switch: Allows use with alternative power sources.
• Metal Gear Housing: Ensures durability.
• Tool-less Wheel Guard Adjustment: For easy and quick adjustments.

2.1 Components Included

• Makita 9557PB Angle Grinder
• Side Handle
• 4-1/2" Diamond Blade, Turbo, General Purpose (A-94552)
• (5) 4-1/2" Grinding Wheels (A-95956)
• 4-1/2" Wheel Guard (125273-5)
• 4-1/2" Cut-Off Wheel Guard (135103-2)
• Lock Nut (193465-4)
• Lock Nut Wrench (782422-3)
• Inner Flange (224399-1)
• Aluminum Case

Figure 2: The Makita 9557PBX1 Angle Grinder with the side handle attached, illustrating its ergonomic design.

Figure 3: A close-up of the included Makita 4-1/2" Diamond Blade, Turbo, General Purpose (A-94552).

Figure 4: An example of the included Makita 4-1/2" Grinding Wheel (A-95956).

3. Setup

Before operating the grinder, ensure all components are correctly assembled and secured.

3.1 Attaching the Side Handle

The side handle can be installed on either side of the tool for operator convenience. Simply screw the handle into the threaded opening on the side of the gear housing until it is secure.

3.2 Installing/Changing Wheels and Guards

1. Ensure the grinder is unplugged from the power source.
2. Press the spindle lock button located on the gear housing to prevent the spindle from rotating.
3. Use the provided lock nut wrench (782422-3) to loosen and remove the lock nut and outer flange.
4. Place the desired 4-1/2" grinding wheel or diamond blade onto the inner flange, ensuring the label side faces the tool.
5. Re-attach the outer flange and tighten the lock nut securely with the wrench while holding the spindle lock button.
6. To adjust the wheel guard, loosen the clamping screw, position the guard for optimal protection, and then re-tighten the screw. The tool-less design allows for quick adjustments.

4. Operation

Always wear appropriate personal protective equipment (PPE), including safety glasses, gloves, and hearing protection, when operating the grinder.

4.1 Powering On/Off

The Makita 9557PBX1 features an extra-large paddle switch for activation. To start the grinder, first depress the small lock-off switch (safety toggle) and then squeeze the main paddle switch. Releasing the paddle switch will turn the tool off.

4.2 Continuous Operation

For continuous operation, activate the paddle switch as described above, and then push in the lock-on button located at the back of the paddle. To release from continuous operation, simply squeeze and release the paddle switch.

4.3 AC/DC Switch

The grinder is equipped with an AC/DC switch, allowing it to be used with various power sources. Ensure the switch is set correctly for your power supply before plugging in the tool.

Figure 5: The Makita 9557PBX1 Angle Grinder actively cutting metal, demonstrating its operational capability.

5. Maintenance

Regular maintenance ensures the longevity and optimal performance of your Makita angle grinder.

5.1 Motor Protection

The grinder features labyrinth construction and protective zig-zig varnish to shield the motor and bearings from dust and debris. Periodically inspect the air vents for blockages and clean them to maintain proper airflow and cooling.

5.2 General Cleaning

After each use, wipe down the tool with a clean, dry cloth. Remove any accumulated dust or debris from the housing and around the spindle area. Do not use solvents or harsh chemicals.

6. Troubleshooting

If you encounter issues with your Makita 9557PBX1, consider the following general troubleshooting steps:

• Tool does not start: Ensure the tool is securely plugged into a functioning power outlet. Check the AC/DC switch setting. Verify that the paddle switch and lock-off switch are correctly engaged.
• Reduced performance: Inspect the grinding wheel or blade for wear or damage and replace if necessary. Ensure the wheel is securely mounted. Check for excessive dust buildup in the motor vents.
• Unusual noise or vibration: Immediately stop the tool. Check for loose components, damaged wheels, or foreign objects. If the issue persists, discontinue use and contact customer support.

For more complex issues, refer to the official Makita service center or authorized dealer.

7. Specifications

8. Warranty & Support

The Makita 9557PBX1 Angle Grinder comes with a 1-year limited warranty. For warranty claims, technical support, or service inquiries, please contact Makita customer service or visit an authorized Makita service center. Keep your purchase receipt as proof of purchase for warranty validation.

For additional information and support, you may visit the Makita Store on Amazon.