CRAFTSMAN 4V Cordless Screwdriver (CMHT6640BI)

1. Product Overview

The CRAFTSMAN 4V Cordless Screwdriver (CMHT6640BI) is designed for efficient tightening and loosening of screws, particularly in confined spaces. It features a pivoting head for enhanced accessibility, a battery status indicator, and an integrated LED work light for improved visibility. This tool is suitable for various home projects and includes a picture-hanging kit for added convenience.

Key Features:

• Pivoting Handle: Allows access to screws in tight workspaces.
• Battery Status Indicator: Displays the remaining charge.
• Integrated LED Work Light: Illuminates low-light areas.
• Magnetic Tip: Holds screws securely, freeing hands during operation.
• USB Charging: Conveniently recharges using a USB-compatible outlet.

Figure 1: CRAFTSMAN 4V Cordless Screwdriver (CMHT6640BI) in its standard operating configuration.

2. Safety Guidelines

Always read and understand all safety warnings and instructions before operating this power tool. Failure to follow the warnings and instructions may result in electric shock, fire, and/or serious injury.

General Safety:

• Work Area Safety: Keep your work area clean and well-lit. Cluttered or dark areas invite accidents.
• Electrical Safety: Do not expose power tools to rain or wet conditions. Water entering a power tool will increase the risk of electric shock.
• Personal Safety: Always wear eye protection. Use hearing protection when operating power tools for extended periods. Dress properly; avoid loose clothing or jewelry.
• Tool Use and Care: Do not force the power tool. Use the correct power tool for your application. Disconnect the plug from the power source and/or the battery pack from the power tool before making any adjustments, changing accessories, or storing power tools.
• Battery Safety: Recharge only with the charger specified by the manufacturer. Do not disassemble the battery pack.

Figure 2: Side view of the screwdriver, highlighting important warning labels. Always read all labels before use.

3. Package Contents

Verify that all items listed below are included in your package. If any parts are missing or damaged, please contact CRAFTSMAN customer support.

• CRAFTSMAN 4V MAX* Cordless Screwdriver (CMHT6640BI)
• USB Charger
• Picture Hanging Kit

4. Setup

4.1 Charging the Screwdriver

1. Connect the USB charger to the charging port on the screwdriver.
2. Plug the USB charger into any compatible USB power source (e.g., wall adapter, computer USB port).
3. The battery status indicator will show the charging progress. Allow the screwdriver to charge fully before first use.
4. Disconnect the charger once the battery is fully charged.

4.2 Installing Screwdriver Bits

1. Ensure the screwdriver is turned off and the forward/reverse switch is in the neutral (locked) position.
2. Insert the desired screwdriver bit firmly into the magnetic bit holder at the front of the tool.
3. To remove, simply pull the bit out of the holder.

Figure 3: View of the screwdriver's front end, illustrating the bit holder and the location of the charging port.

5. Operating Instructions

5.1 Powering On/Off and Forward/Reverse Rotation

• To activate the screwdriver, press the trigger switch. Release the trigger to turn off the tool.
• Locate the forward/reverse switch near the trigger.
• Push the switch to the left for forward (tightening) rotation.
• Push the switch to the right for reverse (loosening) rotation.
• Position the switch in the center to lock the tool and prevent accidental activation.

5.2 Using the Pivoting Handle

1. To adjust the handle, locate the pivot release button or mechanism (refer to Figure 4).
2. Press the release and pivot the handle to the desired angle (straight or pistol grip).
3. Ensure the handle locks securely into place before operating the tool.

Figure 4: The screwdriver with its handle pivoted, demonstrating its ability to access tight spaces.

5.3 LED Work Light

The integrated LED work light automatically activates when the trigger is pressed, illuminating the work surface for better visibility in dimly lit areas.

5.4 Magnetic Tip

The magnetic tip holds screws in place, allowing for one-handed operation and preventing screws from dropping, especially useful when working overhead or in awkward positions.

6. Care and Maintenance

• Cleaning: Keep the tool's ventilation openings clean and free of debris to prevent overheating. Use a clean, dry cloth to wipe down the exterior. Do not use harsh chemicals or abrasive cleaners.
• Storage: Store the screwdriver in a dry, secure location, out of reach of children. Avoid storing in direct sunlight or extreme temperatures.
• Battery Care: For optimal battery life, avoid fully discharging the battery frequently. Recharge the battery when the status indicator shows low charge. If storing for extended periods, charge the battery to approximately 50% every few months.

7. Troubleshooting Guide

8. Technical Specifications

9. Warranty and Customer Support

CRAFTSMAN products are manufactured to high-quality standards. For specific warranty information regarding your CRAFTSMAN 4V Cordless Screwdriver (CMHT6640BI), please refer to the warranty card included with your purchase or visit the official CRAFTSMAN website.

If you have any questions, require technical assistance, or need to report a problem, please contact CRAFTSMAN customer support. Contact details can typically be found on the CRAFTSMAN website or in your product packaging.