HiKOKI 36V Impact Wrench WR36DH User Manual

1. Introduction

Thank you for purchasing the HiKOKI 36V Impact Wrench WR36DH. This manual provides essential information for the safe and effective use of your new tool. Please read this manual thoroughly before operation and keep it for future reference. This impact wrench is designed for tightening and loosening various bolts and nuts, such as those used in structural fastening.

Figure 1: HiKOKI 36V Impact Wrench WR36DH with included battery, charger, and system case.

2. Safety Information

Always observe basic safety precautions to reduce the risk of fire, electric shock, and personal injury. Keep this manual handy for quick reference.

General Power Tool Safety Warnings

• Work Area Safety: Keep work area clean and well lit. Cluttered or dark areas invite accidents. Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases or dust. Power tools create sparks which may ignite the dust or fumes.
• 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: Stay alert, watch what you are doing and use common sense when operating a power tool. Do not use a power tool while you are tired or under the influence of drugs, alcohol or medication. A moment of inattention while operating power tools may result in serious personal injury. Use personal protective equipment. Always wear eye protection. Protective equipment such as dust mask, non-skid safety shoes, hard hat, or hearing protection used for appropriate conditions will reduce personal injuries.
• Power Tool Use and Care: Do not force the power tool. Use the correct power tool for your application. The correct power tool will do the job better and safer at the rate for which it was designed. Disconnect the plug from the power source and/or remove the battery pack, if detachable, from the power tool before making any adjustments, changing accessories, or storing power tools. Such preventive safety measures reduce the risk of starting the power tool accidentally.
• Battery Tool Use and Care: Recharge only with the charger specified by the manufacturer. A charger that is suitable for one type of battery pack may create a risk of fire when used with another battery pack. Use power tools only with specifically designated battery packs. Use of any other battery packs may create a risk of injury and fire.

3. Package Contents

Upon opening the package, ensure all items listed below are present and in good condition. If any items are missing or damaged, please contact your retailer.

• HiKOKI 36V Impact Wrench WR36DH Unit
• Battery (BSL36A18BX) x 1
• Charger (UC18YDL2)
• System Case 2
• First Repair Warranty Card (2-year warranty from purchase date)
• Instruction Manual (this document)

Note: Hex sockets are sold separately.

Figure 2: Included accessories for the WR36DH model.

4. Setup

4.1 Charging the Battery

Before first use, fully charge the battery. Insert the battery pack (BSL36A18BX) into the charger (UC18YDL2). The charger's indicator light will show the charging status. Once charging is complete, remove the battery from the charger.

4.2 Installing the Battery

Align the battery pack with the battery slot on the tool handle and slide it in until it clicks into place. Ensure it is securely latched before operation.

4.3 Attaching a Socket

Push the desired hex socket onto the anvil of the impact wrench until it locks securely. To remove, pull the socket firmly away from the anvil.

4.4 Connecting via Bluetooth (Optional)

The WR36DH features Bluetooth connectivity with the HiKOKI TOOLS app. This allows for customized settings such as rotation speed, auto-stop time, and LED light illumination time.

1. Download the "HiKOKI TOOLS" app from your smartphone's app store.
2. Ensure the Bluetooth battery (BSL36A18BX) is installed in the tool.
3. Open the app and follow the on-screen instructions to pair your impact wrench.

Figure 3: Customizing settings via the HiKOKI TOOLS app on a smartphone.

5. Operation

5.1 Power and Torque Settings

The WR36DH offers four levels of rotation speed (power) settings, which can be adjusted via the tool's mode selector or through the HiKOKI TOOLS app. The maximum tightening torque is 350 N·m, and the maximum loosening torque is 650 N·m.

Figure 4: High power output for both tightening and loosening tasks.

5.2 Auto-Stop Function (Forward Rotation)

This function automatically stops the tool after a preset time, preventing overtightening of nuts. The auto-stop time can be set from 0.1 to 10 seconds in 0.1-second increments via the HiKOKI TOOLS app.

5.3 Auto-Slow Function (Reverse Rotation)

The auto-slow function detects when a nut is loosened and automatically reduces the rotation speed, preventing the nut from falling off unexpectedly. This feature enhances safety and efficiency during disassembly.

Figure 5: Smart functions for preventing overtightening and nut drop-off.

5.4 Work Efficiency

The WR36DH offers excellent work efficiency. For example, with a BSL36A18BX battery, it can tighten approximately 280 M16 x 55 (F10T) bolts or approximately 50 M12 foundation bolts (cypress wood, pre-drilled hole φ21mm) on a single charge.

Figure 6: Estimated work volume per charge using BSL36A18BX battery.

5.5 Speed Comparison

Compared to previous models, the WR36DH significantly improves tightening and loosening speeds. For foundation bolt tightening (M12, cypress wood, pre-drilled hole φ21mm), it is approximately 1.3 times faster. For loosening M20 (F10T) bolts tightened to 600 N·m, it is more than 2 times faster.

Figure 7: Speed comparison for tightening and loosening tasks.

6. Maintenance

Regular maintenance ensures the longevity and optimal performance of your impact wrench.

• Cleaning: Keep the tool clean and free from dust and debris. Use a soft, dry cloth for cleaning. Do not use harsh chemicals or abrasive cleaners.
• Battery Care: Store batteries in a cool, dry place away from direct sunlight. Do not store fully discharged batteries for extended periods.
• Inspection: Periodically inspect the tool for any signs of damage, loose screws, or worn parts. If any issues are found, discontinue use and contact a qualified service center.
• Lubrication: This tool is designed for minimal user lubrication. Refer to the detailed instruction manual for any specific lubrication points, if applicable.

7. Troubleshooting

This section addresses common issues you might encounter with your HiKOKI Impact Wrench. For problems not listed here, please contact customer support.

8. Specifications

9. Warranty and Support

First Repair Warranty

This product comes with a special first repair warranty for purchases made on Amazon.co.jp. The warranty period is 2 years from the date of purchase. During this period, if the cordless tool or charger malfunctions under normal use conditions as described in the instruction manual, the first repair will be covered based on the contents of the warranty card.

To claim warranty service, please apply for repair via the Web repair reception URL provided on the warranty card. You will need to send the product, this manual, and proof of purchase (e.g., printed order history screen, copy of receipt) together.

Please note: Purchases made from sellers other than Amazon.co.jp are not eligible for this specific warranty.

Customer Support

For further assistance, technical support, or service inquiries, please visit the official HiKOKI website or contact their customer service department. Refer to the contact information provided in the original product packaging or on the official HiKOKI website.

You can also visit the HiKOKI Brand Store on Amazon.co.jp for more information.