WARRIOR 58089 - User Manual

Grinding Wheel
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Owner’s Manual & Safety Instructions
Save This Manual Keep this manual for the safety warnings and precautions, assembly,
operating, inspection, maintenance and cleaning procedures. Write the product’s serial number in the
back of the manual near the assembly diagram (or month and year of purchase if product has no number).
Keep this manual and the receipt in a safe and dry place for future reference. 21h
When unpacking, make sure that the product is intact
and undamaged. If any parts are missing or broken,
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Copyright
©
2021 by Harbor Freight Tools
®
. All rights reserved.
No portion of this manual or any artwork contained herein may be reproduced in
any shape or form without the express written consent of Harbor Freight Tools.
Diagrams within this manual may not be drawn proportionally. Due to continuing
improvements, actual product may differ slightly from the product described herein.
Tools required for assembly an d se rv ic e may n ot b e in cl uded.
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.

Summary

Warning Symbols and Definitions

Warning Symbols Explained

Explains safety alert symbols and their meanings for potential hazards.

Important Safety Information

General Power Tool Safety Warnings

Provides essential safety warnings applicable to all power tool operation.

Work Area Safety

Guidelines for maintaining a safe and hazard-free work environment.

Electrical Safety

Electrical Safety Precautions

Details essential precautions to prevent electric shock during operation.

Personal Safety

Personal Safety Guidelines

Covers alertness, proper attire, and safe practices for operator well-being.

Power Tool Use and Care

Proper Use and Maintenance

Guidelines for correct operation, maintenance, and tool longevity.

Service Recommendations

Recommendation for repairs to be performed by qualified technicians.

Safety Warnings Common for Grinding, Sanding or Wire Brushing Operations

Operation-Specific Safety Warnings

Crucial safety warnings for grinding, sanding, and wire brushing tasks.

Kickback and Related Warnings

Understanding and Preventing Kickback

Explains kickback and provides precautions to avoid this dangerous reaction.

Safety Warnings Specific for Grinding Operations

Grinding Operation Safety

Specific safety guidelines for using the tool for grinding operations.

Safety Warnings Specific for Sanding Operations

Sanding Operation Safety

Specific safety guidelines for using the tool for sanding operations.

Safety Warnings Specific for Wire Brushing Operations

Wire Brushing Operation Safety

Specific safety guidelines for using the tool for wire brushing operations.

Vibration Safety

Managing Vibration Risks

Information and precautions to reduce the risk of vibration-related injuries.

Grounding

Grounding Requirements

Explains grounding for tools with three-prong plugs and double-insulated tools.

Extension Cords

Extension Cord Selection Guide

Provides guidance on selecting appropriate extension cords based on gauge and length.

Symbology

Understanding Tool Symbols

Explains the meaning of various symbols used throughout the manual.

Specifications

Technical Specifications

Lists key technical details such as electrical rating, speed, and dimensions.

Setup and Assembly

Pre-Use Safety and Component Installation

Covers pre-use safety checks and installation of wheel guard and auxiliary handle.

Operating Instructions

Tool Set Up

Safety precautions before installing accessories and tools.

Installing a Non-threaded Grinding Wheel

Procedure for mounting non-threaded grinding wheels with specifications.

Installing a Threaded Accessory

Procedure for mounting threaded accessories like discs, brushes, and wheels.

Workpiece and Work Area Set Up

Work Area Preparation

Guidelines for setting up a clean, safe, and distraction-free work area.

General Operating Instructions

Operating the Angle Grinder

Step-by-step guide for operating the tool, including starting, stopping, and usage.

Maintenance and Servicing

Routine Maintenance Procedures

Covers pre-use inspections, cleaning, lubrication, and brush maintenance.

Accessory Storage and Handling

Guidelines for safely storing and handling grinding accessories.

Troubleshooting

Common Problems and Solutions

Guides users through common issues like tool not starting or slow operation.

Parts List and Diagram

Parts List

Detailed list of all parts with their corresponding numbers and quantities.

Assembly Diagram Reference

Visual representation of how the tool's parts are assembled together.

Limited 90 Day Warranty

Warranty Information

Details the 90-day limited warranty, exclusions, and claim procedures.

Overview

1. Function Description
2. Important Technical Specifications
3. Usage Features
4. Safety Features
5. Maintenance Features

This document is an owner's manual and safety instructions for a Warrior 4-1/2" Angle Grinder, model 58089. The manual provides comprehensive information on the device's function, technical specifications, usage, and maintenance.

Function Description:

The Warrior 4-1/2" Angle Grinder is a power tool designed to function as a grinder, sander, or wire brush. It is intended for operations such as grinding, sanding, and wire brushing, but polishing or cutting-off operations are not recommended. The tool operates by rotating an accessory (such as a grinding wheel, sanding disc, or wire brush) at high speed to perform material removal tasks. The design incorporates a Wheel Guard for safety, an Auxiliary Handle for improved control, and a Spindle Lock Button for easy accessory changes. The motor's fan draws dust inside the housing, and regular cleaning of air vents is crucial to prevent electrical hazards from powdered metal accumulation.

Important Technical Specifications:

• Electrical Rating: 120VAC / 60Hz / 4.3A
• Motor No Load Speed: 12,000 RPM
• Max. Accessory Diameter (sold separately): 4-1/2" (115 mm)
• Max. Accessory Thickness: 1/4"
• Arbor Hole Diameter: 7/8"
• Spindle Thread: 5/8" x 11 TPI

Usage Features:

The angle grinder is designed for ease of use with several features:

• Auxiliary Handle: Can be installed in one of two positions (either side of the Gear Housing) to provide maximum control and resist kickback forces. It must be securely tightened before use.
• Wheel Guard: Adjustable and securely attached to the power tool, positioned for maximum safety to expose the least amount of the wheel towards the operator. It protects against broken wheel fragments and accidental contact.
• Spindle Lock Button: Used to prevent the spindle from turning during accessory installation or removal.
• Switch: A slide switch with a safety release mechanism. The user presses down to release the safety, then slides the switch up to start the tool. To stop, the user presses down on the back of the switch and releases it.
• Accessory Compatibility: Supports non-threaded grinding wheels (rated to at least 12,000 RPM, no larger than 4-1/2" in diameter, 7/8" arbor hole, 1/4" thick or less, suitable for surface grinding, dry, clean, and undamaged) and threaded accessories (rated to at least 12,000 RPM, no larger than 4-1/2" in diameter, 5/8" x 11 TPI threaded opening, undamaged, such as sanding discs with backing pads, sanding flap discs, wire wheels, or wire cup brushes).
• Outer Flange: Features a step for improved stability with thick accessories (step on the inside) and can be flipped for thin accessories (step on the outside) to ensure proper clamping.
• Operating Angle: For grinding, the wheel should be applied to the work material at a 10°-15° angle, allowing the tool to operate at full speed. Lighter pressure should be used if the tool bogs down.
• Work Area Setup: Requires a clean, well-lit work area free of children, pets, hazardous objects, and utility lines. The power cord should be routed safely to prevent tripping hazards. Workpieces must be secured with clamps or a vise.

Safety Features:

The manual emphasizes numerous safety warnings and precautions:

• Personal Protective Equipment (PPE): Users must wear ANSI-approved eye protection (safety goggles with side shields or face shield), NIOSH-approved breathing protection (dust mask/respirator), hearing protectors, gloves, and a workshop apron. Leather leggings and fire-resistant footwear are recommended for grinding operations.
• Electrical Safety: Power tool plugs must match the outlet. Avoid body contact with grounded surfaces. Do not expose power tools to rain or wet conditions. Use a Ground Fault Circuit Interrupter (GFCI) in damp locations. Do not abuse the power cord. Use appropriate extension cords (refer to Table A for minimum wire gauge based on amperes and length).
• Kickback Prevention: Maintain a firm grip, use the auxiliary handle, keep hands away from rotating accessories, and position the body to resist kickback forces. Avoid working corners, sharp edges, or bouncing, as these can cause snagging and kickback. Do not attach saw chain woodcarving blades or toothed saw blades.
• Accessory Safety: Only use accessories specifically designed and recommended by the manufacturer, with a rated speed equal to or greater than the tool's maximum speed. Accessory diameter and thickness must be within the tool's capacity. Arbor holes must properly fit the spindle. Inspect accessories for damage before each use and run the tool at maximum no-load speed for one minute after installation. Do not use worn or damaged wheels. Do not grind with the side of the wheel.
• Vibration Safety: This tool vibrates during use. Prolonged exposure can cause temporary or permanent physical injury. Recommendations include medical check-ups for regular users, avoiding use by pregnant women or individuals with impaired blood circulation/nervous system disorders, wearing suitable gloves, using tools with lowest vibration, including vibration-free periods, and gripping lightly.
• General Power Tool Safety: Keep the work area clean and well-lit. Do not operate in explosive atmospheres. Keep children and bystanders away. Stay alert and use common sense. Prevent unintentional starting by ensuring the switch is off before connecting to power. Remove adjusting keys/wrenches before turning on. Do not overreach. Dress properly, keeping loose clothing and jewelry away from moving parts. Use dust extraction facilities if provided. Store idle power tools out of reach of children.
• Pacemaker Safety: Individuals with pacemakers should consult their physician before use, avoid operating alone, avoid using with the power switch locked on, properly maintain and inspect the tool, and properly ground the power cord (GFCI recommended).

Maintenance Features:

• Pre-Use Inspection: Before each use, inspect the tool for loose hardware, misalignment or binding of moving parts, cracked or broken parts, damaged electrical wiring, or any other condition affecting safe operation.
• Post-Use Cleaning: After use, wipe external surfaces of the tool with a clean cloth.
• Motor Vent Cleaning: Periodically blow dust and grit out of the motor vents using dry compressed air while wearing ANSI-approved safety goggles and NIOSH-approved breathing protection.
• Carbon Brush Maintenance: Carbon brushes may require maintenance if motor performance decreases or stops. This should be performed by a qualified service technician.
• Cord Replacement: If the supply cord is damaged, it must be replaced by a qualified service technician.
• Accessory Storage: Handle accessories carefully to prevent dropping or bumping. Store accessories in shelves, racks, boxes, or drawers in a dry area, above freezing. Grinding wheels exposed to humidity or freezing temperatures must not be used.
• Troubleshooting: A troubleshooting guide is provided for common issues such as the tool not starting, operating slowly, decreased performance, excessive noise/rattling, overheating, or ineffective grinding/sanding/brushing. Solutions range from checking connections and circuit breakers to having the tool serviced by a qualified technician.
• General Maintenance: All repairs and parts replacements should be undertaken by certified and licensed technicians. The buyer assumes all risk and liability for repairs or replacement parts.

The manual also includes a detailed parts list and assembly diagram for reference, though individual replacement parts may not be available for all listed components. It emphasizes saving the manual and receipt for future reference and contacting Harbor Freight Tools for technical support or replacement parts.

WARRIOR 58089 Specifications

General

Brand	WARRIOR
Model	58089
Category	Grinder
Language	English