User Manual for HiKOKI G 12SA4(S) and G 13SB4(S) Disc Grinders

Quick guide from the manual

This manual provides essential safety and operational instructions for the HiKOKI G 12SA4(S) and G 13SB4(S) disc grinders. Always read the full safety warnings before use to prevent electric shock, fire, or serious injury.

Safety Warnings

General Power Tool Safety: Keep the work area clean and well-lit. Do not operate in explosive atmospheres. Keep children and bystanders away. Ensure the power switch is in the OFF position before connecting to a power source.

Kickback and Related Warnings: Kickback is a sudden reaction to a pinched or snagged rotating wheel. Maintain a firm grip and position your body to resist kickback forces. Never place your hand near the rotating accessory.

Mounting and Operation

• Wheel Guard: Must be securely attached and positioned for maximum safety.
• Side Handle: Always use the side handle for maximum control.
• Wheel Assembly: Ensure the depressed center wheel is the correct type and free of cracks. Ensure the wheel nut is securely tightened.
• Switch Operation: Confirm the push button is disengaged before switching the tool ON.
• Grinding: In most applications, the weight of the machine alone is sufficient for effective grinding. Do not overload the machine by applying excessive pressure.

Maintenance and Inspection

• Depressed Center Wheel: Regularly inspect for cracks and surface defects.
• Mounting Screws: Periodically check that all screws are properly tightened.
• Carbon Brushes: Inspection and replacement should ONLY be performed by a HiKOKI Authorized Service Center.
• Motor Maintenance: Regularly blow dry air through the tail cover air hole while the motor is running without load to remove accumulated dust and dirt.