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Drill Master 91938 - User Manual

Drill Master 91938
16 pages
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Cut-Off Wheel sold separately.
Visit our website at: http://www.harborfreight.com
Email our technical support at: productsupport@harborfreight.com
REV 14i
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.
When unpacking, make sure that the product is intact
and undamaged. If any parts are missing or broken,
please call 1-888-866-5797 as soon as possible.
Copyright
©
2004 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.
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.

Table of Contents

Questions and Answers

  • S
    shanenewmanJul 27, 2025
    What to do if my Drill Master 91938 Saw will not start?
    • J
      jose76Jul 27, 2025
      If your Drill Master Saw doesn't start, here are a few things to check: * Make sure the power cord is properly plugged in. * Verify that the outlet has power. If not, check the circuit breaker, ensuring it's the correct capacity and not overloaded. * If your saw has a thermal reset breaker, turn it off, let it cool, and then press the reset button. * If none of these steps work, there may be internal damage or wear, and you should have a technician service the tool.
  • C
    christopherwilliamsAug 1, 2025
    Why is my Drill Master Saw overheating?
    • P
      pfreemanAug 2, 2025
      If your Drill Master Saw is overheating, consider the following: 1. Avoid forcing the saw to work too quickly; allow it to operate at its own pace. 2. Ensure the accessory is properly aligned with the fence or table. 3. Clean any blockages from the motor housing vents, wearing safety goggles and a dust mask. 4. If using an extension cord, ensure it is suitable for the saw's power requirements. If possible, eliminate the extension cord.
  • D
    David WilsonAug 7, 2025
    Why is my Drill Master Saw operating slowly?
    • T
      Troy SteeleAug 7, 2025
      If your Drill Master Saw is operating slowly, the issue may be related to the extension cord. Try eliminating the extension cord altogether. If you must use one, make sure it is a shorter, heavier gauge cord. Refer to the GROUNDING section for more information on Extension Cords.
  • W
    Willie ChristensenAug 13, 2025
    What to do if my Drill Master 91938 has excessive noise or rattling?
    • S
      Stanley JacksonAug 13, 2025
      If your Drill Master Saw is making excessive noise or rattling, it could be due to internal damage or wear, such as with the carbon brushes or bearings. Have a technician service the tool.
  • J
    Jessica ScottAug 20, 2025
    How to fix performance decrease over time in Drill Master Saw?
    • S
      Susan MorenoAug 20, 2025
      If the performance of your Drill Master Saw decreases over time, it could be due to worn or damaged carbon brushes. Have a qualified technician replace them.

Summary

WARNING SYMBOLS AND DEFINITIONS

Safety Symbol Definitions

Defines safety alert symbols like DANGER, WARNING, CAUTION, and NOTICE for hazard identification.

IMPORTANT SAFETY INFORMATION

General Tool Safety Warnings

Provides essential safety precautions for operating the tool, including guards, area cleanliness, and proper use.

Grounding Instructions

110-120 VAC Grounded Tools

Details on using tools with three-prong plugs and proper grounding for electrical safety.

Cut-Off Saw Safety Warnings

Specific Cut-Off Saw Safety Precautions

Covers safe operation of the cut-off saw, including guards, wheel selection, and personal protective equipment.

Vibration Safety

Reducing Vibration-Related Injury

Guidelines to minimize risks associated with tool vibration exposure, including health considerations and proper grip.

Specifications and Setup

Technical Specifications

Details electrical input, motor speed, capacity, and arbor size for the cut-off saw.

Tool Functions Overview

Identifies key components and functions of the cut-off saw, illustrated with a diagram.

Tool Setup and Wheel Replacement

Instructions for initial tool setup and procedures for removing or installing the cut-off wheel.

Depth Adjustment

Details how to adjust the cutting depth of the saw for proper operation and blade wear.

Workpiece and Work Area Setup

Guidelines for preparing the work area and securing the workpiece using the vise and angle scale.

General Operating Instructions

Performing Cutting Operations

Step-by-step guide on how to use the cut-off saw safely and effectively, including starting, cutting, and finishing.

Maintenance and Servicing

Cleaning, Maintenance, and Lubrication

Procedures for cleaning, maintaining, and lubricating the tool to ensure safe and proper operation.

Troubleshooting

Common Problems and Solutions

Identifies common operational issues, their possible causes, and recommended solutions for the cut-off saw.

Parts List and Diagram

Parts Identification

Lists all parts of the cut-off saw with corresponding numbers for identification and replacement.

Assembly Diagram

Visual representation of the cut-off saw's components and their assembly order.

Limited 90 Day Warranty

Warranty Information

Details the terms and conditions of the 90-day limited warranty for the product.

Drill Master 91938 Specifications

General IconGeneral
BrandDrill Master
Model91938
CategorySaw
LanguageEnglish

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