NEU MASTER 4V Cordless Screwdriver User Manual

Introduction

This user manual provides essential information for the safe and effective operation of your NEU MASTER 4V Cordless Electric Screwdriver. Please read this manual thoroughly before first use and retain it for future reference. This compact and powerful tool is designed for routine household tasks, home improvement, and DIY projects, offering convenience and versatility.

Package Contents

Verify that all items listed below are included in your package:

• 1x NEU MASTER Electric Screwdriver
• 30 x Magnetic Screwdriver Bits
• 1 x Extension Bit Holder
• 1 x Flexible Shaft
• 1 x USB Cable (Note: Charger adapter not included)
• 1 x User Manual (This document)
• 1 x Screw Bits Storage Case with Belt Clip

Product Features

• 3-Position Pivoting Handle: The ergonomic handle can be adjusted to three positions (120°, 150°, and 180°) to convert from a straight to a pistol grip, allowing for flexible operation in various work scenarios and tough angles.



• Magnetic Bit Holder: A 1/4" magnetic bit holder ensures quick and secure changes of the supplied accessory bits, enhancing work efficiency.
• Dual LED Lights: Features a front LED work light that automatically activates when the screwdriver is in use, providing illumination in dark spaces. A separate rear flashlight can be operated independently for general lighting.



• Flexible Extension Shaft: Included for accessing narrow spaces and dead ends, this shaft can be bent, twisted, and rotated.
• 6+1 Torque Setting: Provides precise torque control with 6 adjustable settings plus a drill mode, delivering up to 4N.m max torque.



• Forward/Reverse Control: A convenient switch allows for easy transition between screw-driving and fastening tasks.
• High-Capacity 2000mAh Battery: The integrated rechargeable lithium-ion battery provides long-lasting performance, capable of driving approximately 300 normal screws on a full charge.
• Compact and Lightweight: Weighing only 0.85 lbs, the screwdriver is easy to handle and maneuver for daily maintenance and use.

Setup

Charging the Battery

The screwdriver is equipped with a rechargeable 2000mAh lithium-ion battery. Before first use, fully charge the battery. A full charge typically takes 3-5 hours.

1. Locate the USB charging port on the screwdriver.
2. Connect the provided USB cable to the screwdriver's charging port.
3. Connect the other end of the USB cable to a compatible USB power source (e.g., laptop, power bank, car charger, or a USB wall adapter - not included).
4. The charging light indicator will illuminate during charging.
5. Once fully charged, disconnect the USB cable.

Important: Do NOT turn on or operate the tool while it is charging.

Inserting Screwdriver Bits

The screwdriver features a 1/4" magnetic bit holder for easy bit insertion and removal.

1. Select the appropriate screwdriver bit for your task from the included 30-piece set.
2. Firmly push the bit into the magnetic bit chuck until it is securely seated.
3. To remove, simply pull the bit out of the chuck.

Operating Instructions

Adjusting the Pivoting Handle

To change the handle position:

1. Locate the transformation lock button on the handle.
2. Press and hold the button.
3. Pivot the handle to your desired position (120°, 150°, or 180°).
4. Release the button to lock the handle in place.

Setting the Torque

The 6+1 torque setting allows you to adjust the fastening power to prevent over-tightening or stripping screws.

1. Rotate the torque adjustment ring located near the bit chuck.
2. Select a setting from 1 to 6, where 1 is the lowest torque and 6 is the highest.
3. The '+' setting (drill mode) provides maximum torque for drilling or driving into harder materials.

Forward/Reverse Control

Use the forward/reverse switch to control the direction of rotation:

• Push the switch to the left for forward rotation (tightening screws).
• Push the switch to the right for reverse rotation (loosening screws).
• Center the switch to lock the trigger and prevent accidental activation.

Using the LED Lights

• The front LED work light automatically turns on when the trigger is pressed and the screwdriver is operating. It turns off when the trigger is released.
• To activate the rear flashlight independently, press the flashlight button located on the handle. Press again to turn it off.

General Operation

1. Ensure the correct bit is inserted and the torque setting is appropriate for the task.
2. Position the screwdriver bit onto the screw head.
3. Press the trigger to start the screwdriver. Apply steady, even pressure.
4. Release the trigger to stop.

Maintenance

Cleaning

• Always disconnect the USB cable before cleaning.
• Wipe the tool with a soft, damp cloth. Do not use harsh chemicals or abrasive cleaners.
• Keep ventilation openings clear of dust and debris.

Battery Care

• Recharge the battery when its performance begins to diminish.
• For long-term storage, charge the battery to approximately 50% and store the tool in a cool, dry place.
• Avoid fully discharging the battery frequently, as this can reduce its lifespan.

Bit Storage

Utilize the provided screw bits storage case to keep your magnetic bits organized and easily accessible. The case includes a belt clip for convenient portability.

Troubleshooting

Specifications

Warranty and Support

NEU MASTER provides a 12-month warranty for this electric cordless screwdriver. If you encounter any issues or are not satisfied with your purchase, please contact our customer service team. We are available 24/7 to provide immediate solutions and support.

For technical support or warranty claims, please refer to the contact information provided on the product packaging or the official NEU MASTER website.