Tools / Power Tools
HiKOKI G 18BYE Disc Grinder User Manual
Quick guide for the HiKOKI G 18BYE disc grinder, covering safety, assembly, operation, maintenance, and troubleshooting.
Table of contents
Quick guide from the manual
This document provides essential safety and operational instructions for the HiKOKI G 18BYE disc grinder. Always read the full safety warnings before use. The tool is designed for grinding and cutting applications. Key features include soft start, restart protection, overload protection, overheat protection, and an electric brake.
Safety
General Safety: Always wear eye protection. Keep bystanders at a safe distance. Do not operate near flammable materials. Ensure the power source matches the tool's nameplate. Use an RCD (Residual Current Device) with a rated current of 30mA or less.
Operational Safety: Never use damaged accessories. Ensure the wheel guard is securely attached and positioned for maximum safety. When using a cutting-off wheel, you must attach the cutting-off guard. Do not use cutting-off wheels for side grinding. Always hold the tool securely, especially when the electric brake activates, as it may cause kickback.
Mounting and Operation
- Wheel Guard: Fit and adjust the guard using the lever and M5 bolt.
- Side Handle: Fix the side handle securely to the tool body.
- Assembling Wheels: Use the included wrench to tighten the wheel nut. Ensure the wheel washer is correctly positioned. Always press the push button to lock the spindle before tightening or loosening the nut.
- Switch Operation: The switch is used to turn the tool on and off.
- Grinding: Maintain a grinding angle of 15°–30° for optimal results.
Maintenance and Inspection
- Regularly inspect the wheel for cracks or defects.
- Check all mounting screws and tighten if loose.
- Keep ventilation openings clear. If cleaning is necessary, disconnect the tool from the power source and use non-metallic objects.
- After use, blow air from the tail cover air hole while the motor is running without load to remove accumulated dust.
- Supply cord replacement must be performed by a HiKOKI Authorized Service Center.
Notification Lamp
The tool features a notification lamp to indicate status:
- Green: Standby for operation.
- Red: Restart protection activated (switch off and on to reset).
- Blinking Red: Overload or overheat protection activated. For overheating, disconnect the plug and allow the tool to cool in a well-ventilated area.
Manufacturer information
HiKOKI
Practical help
Common problems
Tool stops during operation (Red light blinking)
Indicates overload or overheat protection. For overload, remove the cause. For overheating, disconnect the plug and allow the tool to cool.
Tool does not restart after power interruption
Restart protection is active. Switch the tool OFF once to reset.
Wheel nut is loose
Always tighten the wheel nut with the included wrench before use. Failure to do so may cause the nut to loosen when the brake is activated.
Before use
- Check that the power source matches the tool's nameplate.
- Ensure the power switch is in the OFF position before plugging in.
- Inspect the grinding wheel for cracks or surface defects.
- Ensure the wheel guard is correctly attached and adjusted.
- Confirm the side handle is securely fixed.
- Verify the spindle lock is disengaged by pressing the button 2-3 times.
Specs in practice
- Rated speed (6600/min)
- The maximum rotational speed of the tool.
- Wheel Hole Dia. (22.23 mm)
- The required diameter for the center hole of the grinding/cutting wheel.
- Power Input (1950 W)
- The electrical power consumption of the tool.
Images and diagrams
- Fig 1: Fitting and adjusting the wheel guard.
- Fig 3: Assembling the depressed center wheel using the wrench and push button.
- Fig 4: Assembling the cutting wheel.
- Fig 6: Switch operation.
- Fig 7: Recommended grinding angle (15°–30°).
Model compatibility
- Do not use separate reducing bushings or adapters for large hole wheels.
- Use only wheel types recommended for this tool.
- Do not use cutting-off wheels for side grinding.
- Do not use the grinder near welding equipment as rotational speed may become unstable.
Manual page author
Emily Carter
User documentation editor
Prepares concise manual descriptions and highlights the most useful setup, operation, and maintenance information for readers.