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Chicago Electric 90287 User Manual

Chicago Electric 90287
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DRILL BIT SHARPENER
Model
90287
SET UP AND OPERATING INSTRUCTIONS
Visit our website at: http://www.harborfreight.com
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.
Copyright
©
2003 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 and service may not be included.
For technical questions or replacement parts, please call 1-800-444-3353.
Cover revised 09j

Questions and Answers:

Chicago Electric 90287 Specifications

General IconGeneral
Voltage120V
Speed11, 000 RPM
Power SourceCorded Electric
Amperage4.3 A
Disc Diameter4-1/2 in.
Arbor size5/8 in.
Spindle Thread5/8 in.-11 UNC

Summary

Important Safety Information

General Power Tool Safety Warnings

Read all safety warnings and instructions to prevent electric shock, fire, and serious injury.

Work Area Safety

Maintain a clean, well-lit workspace and keep bystanders away to prevent accidents.

Electrical Safety

Ensure proper grounding, use matching outlets, and avoid contact with wet surfaces or damaged cords.

Personal Safety

Stay alert, use common sense, wear protective equipment, and prevent unintentional starting.

Power Tool Use and Care

Use the correct tool for the job, do not force it, and perform maintenance as needed.

Tool Service

Ensure tool safety by having it serviced by a qualified person using identical replacement parts.

Sharpener Safety Warnings

Be cautious of hot parts, maintain labels, and handle with care during sharpening operations.

Grounding

Double Insulated Tools

Tools marked 'Double Insulated' feature special systems and do not require grounding for safety.

Extension Cord Usage

Select appropriate gauge, length, and rating for extension cords to ensure safe and effective operation.

Specifications

Unpacking

Operation

Identifying Properly Sharpened Bits

A properly sharpened bit has a sharp center point and two sharp, equal cutting edges.

Step-by-Step Sharpening Procedure

Place sharpener on a flat surface, insert bit, tilt, apply pressure, and run the unit for 5-10 seconds.

Troubleshooting Sharpening Issues

Address overheating, uneven edges, and long sharpening times by adjusting pressure and time.

Adjusting the Grinding Wheel

Turn the adjusting knob to raise or lower the wheel for aggressive or finer grinding actions.

Maintenance

How to Change the Grinding Wheel

Remove screws, index head, and wheel assembly. Unscrew cylinder, pry washer, and pop out wheel base.

Cleaning the Unit

Keep the unit free of grit, dirt, and grease using soapy water or non-toxic solvents. Keep air vents clear.

Operation Troubleshooting Guide

Check alignment of adjustment cylinder flats with spindle flats if the wheel doesn't spin. Contact technician if motor doesn't turn on.

Parts List

Assembly Diagram

Limited 90 Day Warranty

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