DESHUO J45 13 lb. Demolition Jack Hammer Instruction Manual

1. Product Overview

The DESHUO J45 is a compact and powerful 13 lb. demolition jack hammer designed for various chipping and breaking tasks. It features a 5/8" Hex shank system for quick bit changes and a 1200W 10-Amp motor, delivering 11.06 ft.lbs. (15 joules) of impact energy. This tool is specifically designed for hammer-only functions and does not support drilling.

Figure 1: DESHUO J45 Demolition Jack Hammer with its components and included accessories, including flat, point, and scaling chisels, carbon brushes, wrench, and grease.

Key Features:

• Hammer-Only Function: Designed exclusively for demolition, chipping, and breaking. No drilling function is available.
• Powerful Performance: Weighs 13.2 lbs and delivers 11.06 ft.lbs. (15 joules) of impact energy for efficient material removal.
• 5/8" Hex Shank System: Enables tool-free bit replacement for quick and easy chisel changes.
• 360° Adjustable Handle: Provides flexibility to position the handle for optimal comfort and control in various working scenarios.
• Lock Button: Allows continuous operation without constantly holding the trigger, reducing user fatigue.
• Vibration Control System: Enhances user comfort during extended periods of use.


Figure 2: A close-up view illustrating the Dual Anti-Vibration System of the DESHUO J45, showing spring compression and bounce for effective vibration isolation.

2. Setup and Assembly

2.1 Chisel Installation and Adjustment

To install a chisel, ensure the tool is unplugged. Insert the 5/8" Hex shank chisel into the tool-free chuck. The chisel bit will rotate and is inserted into the machine. It is normal for the chisel to move up and down slightly after installation, as this allows for the hammering action. This hammer does not feature a specific "chisel position adjustment" mechanism, but three different angles can be achieved by rotating the chisel within the chuck before locking it in place, allowing for versatile use.

2.2 Adjustable Handle

The auxiliary handle can be adjusted 360 degrees around the tool's body. Loosen the handle, rotate it to the desired position for optimal comfort and control, and then tighten it securely.

3. Operating Instructions

3.1 Powering On and Off

To operate the tool, connect it to a 120V (AC) power source. Press the ON/OFF switch to start or stop the hammering action. For continuous operation, engage the lock button after pressing the ON/OFF switch. Press the ON/OFF switch again to release the lock and stop the tool.

3.2 Intended Applications

The DESHUO J45 is suitable for a range of demolition tasks, including:

• Removing tiles, blocks, and bricks.
• Breaking lightweight concrete and thin concrete slabs.
• Slotting in floors or walls.
• Chipping plaster from walls.

This tool is ideal for household tasks, DIY enthusiasts, and small-scale construction projects. Due to its power-to-weight ratio, users may need to apply additional force during operation to achieve optimal performance.

Figure 3: The DESHUO J45 Demolition Hammer in action, demonstrating its use for breaking lightweight concrete.

Figure 4: The DESHUO J45 lightweight jack hammer being used to chip and break tiles, highlighting its 11.1 ft.lbs. impact energy.

Figure 5: A visual representation confirming the DESHUO J45 operates with a "Hammer Only" function and does not support drilling.

4. Maintenance

Regular maintenance ensures the longevity and optimal performance of your DESHUO J45 Demolition Jack Hammer. Always unplug the tool before performing any maintenance.

4.1 Adding Grease

Grease should be added when the demolition hammer shows insufficient power. Add approximately 1 ounce of grease each time. Use Shell Gadus S5 Grease Series or Mobil SHC Series grease.

4.2 Replacing Carbon Brushes

If you detect an unusual odor or notice sparks during operation, replace the carbon brushes immediately. To replace, carefully remove the cover of the motor housing, disconnect the old carbon brushes using pliers, and install new ones. Ensure connections are secure before reattaching the cover.

5. Troubleshooting

This section addresses common questions and issues you might encounter with your DESHUO J45 Demolition Jack Hammer.

• Q: When should I add grease?
  A: Add approximately 1 ounce of grease each time the demolition hammer shows insufficient power.
• Q: When should the carbon brushes be replaced?
  A: If you detect an unusual odor or notice sparks during operation, replace the carbon brushes immediately.
• Q: What type of grease do I add?
  A: Shell Gadus S5 Grease Series and Mobil SHC Series are recommended for the DESHUO demolition hammer.
• Q: What should I do if I have problems with the demo hammer?
  A: You can contact us through Amazon, and we will provide you with a solution.

6. Technical Specifications

7. Warranty and Support

The DESHUO J45 Demolition Jack Hammer comes with a 24-month warranty service. For any product-related issues, questions, or support, please contact us through the Amazon platform where you made your purchase. Our customer service team will assist you in finding a solution.