STANLEY STGS9100-IN 900W 4-inch (100mm) Angle Grinder User Manual

Introduction

This manual provides essential information for the safe and effective operation, maintenance, and troubleshooting of your STANLEY STGS9100-IN 900W 4-inch (100mm) Angle Grinder. Please read these instructions carefully before using the tool and retain them for future reference. Proper use and maintenance will ensure optimal performance and extend the life of your tool.

Important Safety Instructions

Always follow basic safety precautions to reduce the risk of fire, electric shock, and personal injury when using power tools. Familiarize yourself with all warnings and instructions.

Work Area Safety: Keep the 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.
Electrical Safety: Power tool plugs must match the outlet. Never modify the plug in any way. Avoid body contact with earthed or grounded surfaces. Do not expose power tools to rain or wet conditions.
Personal Safety: Always wear eye protection. Use hearing protection when operating for extended periods. Wear a dust mask if operations create dust. Dress properly; avoid loose clothing or jewelry.
Power 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 before making any adjustments, changing accessories, or storing power tools.
Specific Grinder Safety: Always ensure the guard is properly positioned and secured. Use only discs rated for the grinder's speed and diameter. Never use a damaged or incorrect disc.

Package Contents

Upon unpacking, verify that all items listed below are present and undamaged:

Main Unit (Angle Grinder)
Warranty Card
Instruction Manual
Protective Guard
Inner and Outer Disc Flanges
Side Handle
Spanner

STANLEY STGS9100-IN Angle Grinder and included accessories

Image: The STANLEY STGS9100-IN Angle Grinder with its protective guard, side handle, and spanner.

Product Overview

Familiarize yourself with the key components of your angle grinder:

Labeled diagram of STANLEY STGS9100-IN Angle Grinder components

Image: Diagram highlighting the Spindle Lock, On/Off Switch, Side Handle, and Guard.

Spindle Lock: Used to lock the spindle for easy accessory changes.
On/Off Switch: Activates or deactivates the tool's motor.
Side Handle: Provides an additional point of contact and grip for improved control and safety.
Protective Guard: Shields the user from sparks, debris, and accidental contact with the rotating disc.
Body Grip: Ergonomically designed for comfortable handling and reduced user fatigue during extended use.
Cable: Power cable for connecting to an electrical outlet.

Close-up of side handle and spindle lock button on STANLEY STGS9100-IN Angle Grinder

Image: Close-up view of the side handle and spindle lock button.

Close-up of on/off switch and power cable on STANLEY STGS9100-IN Angle Grinder

Image: Close-up view of the on/off switch and power cable.

Close-up of keyed guard and body grip on STANLEY STGS9100-IN Angle Grinder

Image: Close-up view of the keyed guard and body grip.

Setup

Follow these steps to prepare your angle grinder for use:

Attaching the Protective Guard:
Loosen the screw on the protective guard. Position the guard over the spindle housing so that it covers the disc and directs sparks away from you. Tighten the screw securely. Ensure the guard is firmly in place and cannot rotate freely.
Image: The protective guard being attached to the grinder.
Attaching the Side Handle:
Screw the side handle into one of the threaded holes on the gear housing. The handle can be positioned on either the left or right side, depending on your preference and the application. Ensure it is tightened firmly.
Image: Angle grinder with the side handle attached for better control.
Mounting the Grinding/Cutting Disc:
Press and hold the spindle lock button. Place the inner flange onto the spindle. Position the grinding or cutting disc onto the inner flange, ensuring it sits flat. Place the outer flange over the disc. Use the provided spanner to tighten the outer flange nut securely. Release the spindle lock button.

Operating Instructions

Before starting, ensure you are wearing appropriate personal protective equipment (PPE) including safety glasses, hearing protection, gloves, and a dust mask.

Power Connection: Plug the power cord into a suitable electrical outlet.
Starting the Grinder: Hold the grinder firmly with both hands, one on the main body and one on the side handle. Press the On/Off switch to start the tool. Allow the disc to reach full speed before contacting the workpiece.
Grinding/Cutting: Apply light, even pressure to the workpiece. Do not force the tool. For grinding, maintain a small angle (typically 15-30 degrees) between the disc and the workpiece. For cutting, hold the disc perpendicular to the workpiece and make straight cuts.
Stopping the Grinder: Release the On/Off switch to turn off the tool. Wait for the disc to come to a complete stop before setting the tool down.

User operating the angle grinder to cut a stone slab

Image: A user safely operating the angle grinder to cut a stone slab, wearing protective gear.

User operating the angle grinder to grind metal, producing sparks

Image: A user safely operating the angle grinder to grind metal, with sparks visible, wearing protective gear.

Maintenance

Regular maintenance ensures the longevity and safe operation of your angle grinder.

Cleaning: After each use, clean the tool with a soft cloth. Use compressed air to blow dust out of the ventilation openings. Do not use water or chemical cleaners.
Inspection: Regularly inspect the power cord for damage. Check the protective guard and side handle for secure attachment. Ensure the spindle lock mechanism operates smoothly.
Carbon Brushes: The carbon brushes are wear items. If the tool experiences reduced power or excessive sparking, the carbon brushes may need replacement. This should ideally be performed by a qualified service technician.
Storage: Store the tool in a dry, secure location out of reach of children.

Troubleshooting

Refer to the table below for common issues and their potential solutions:

Problem	Possible Cause	Solution
Tool does not start	No power supply; Damaged power cord; Faulty switch; Worn carbon brushes	Check power outlet and cord; Replace damaged cord; Contact service for switch/brush replacement
Excessive sparking from motor	Worn carbon brushes; Dirty commutator	Replace carbon brushes; Clean commutator (by qualified technician)
Tool overheats	Blocked ventilation slots; Overloading the tool	Clean ventilation slots; Reduce load and allow tool to cool
Disc wobbles or vibrates excessively	Improperly mounted disc; Damaged disc; Worn flanges	Re-mount disc correctly; Replace damaged disc; Inspect and replace flanges if worn

Technical Specifications

Key technical data for the STANLEY STGS9100-IN Angle Grinder:

Image: Visual representation of the angle grinder's specifications.

Specification	Value
Brand	STANLEY
Model Number	STGS9100-IN
Power Input	900 Watts
Voltage	240 Volts
Frequency	50/60 Hz
Maximum Rotational Speed (No-load)	11000 RPM
Wheel Diameter	100 mm (4 inches)
Disc Thickness	6 mm
Spindle Size	M10
Material	Metal
Product Dimensions	33L x 12.9W x 11.9H Centimeters
Item Weight	2.16 kg
Power Source	Corded Electric

Warranty and Customer Support

Your STANLEY STGS9100-IN Angle Grinder comes with a 1-year warranty provided by the manufacturer from the date of purchase. For any warranty-related issues, product feedback, or technical assistance, please contact STANLEY customer care.

STANLEY Total Care Customer Contact Information

Image: STANLEY Total Care contact details including phone, email, and WhatsApp.

Customer Care Number: 1860-425-1111 (Available Monday to Friday, 10 AM to 5 PM, except government holidays)
Email: SBD-CUSTOMERCOMMUNICATIONS@SBDINC.COM
WhatsApp: +91 96060 55835
Authorized Service Centers: Over 500 service centers available.

	Stanley BR67 Medium Duty Hydraulic Breaker Parts Manual and Illustrations A comprehensive user manual and parts breakdown for the Stanley BR67 Medium Duty Hydraulic Breaker. This document includes detailed diagrams and lists of components for various assemblies, including the T-handle, anti-vibration handle, and breaker foot, with part numbers and descriptions for different models.
	Stanley GR30 Grinder User Manual and Parts Breakdown Comprehensive user manual and parts illustration for the Stanley GR30 Grinder, detailing assembly, operation, and component identification.
	Stanley GR29 Underwater Grinder User Manual and Parts Guide Explore the Stanley GR29 Underwater Grinder with this detailed user manual and parts breakdown. Covers models GR2930101 and GR29310, offering component identification and assembly insights for professional use.
	Stanley SRP 4960 Compaction Reversible Plate Parts Manual Comprehensive parts manual for the Stanley SRP 4960 Compaction Reversible Plate, detailing all components, part numbers, quantities, and assembly kits. Includes technical specifications, adhesive torque conversions, and maintenance information.
	STANLEY CO25 Hydraulic Cut-Off Saw User Manual This user manual provides comprehensive safety, operation, and maintenance instructions for the STANLEY CO25 Hydraulic Cut-Off Saw. It includes specifications, troubleshooting, and parts information.
	Stanley CH18 Hydraulic Chipping Hammer User Manual: Safety, Operation, and Maintenance Comprehensive user manual for the Stanley CH18 Hydraulic Chipping Hammer, covering safety precautions, operating procedures, maintenance guidelines, troubleshooting, and specifications. Essential reading for safe and effective use.