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Jet JFM-5 - User Manual

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Operating Instructions and Parts Manual
Hollow Chisel Mortiser
Model JFM-5
WMH TOOL GROUP
2420 Vantage Drive
Elgin, Illinois 60123 Part No. M-708589A
Ph.: 800-274-6848 Revision A 6/06
www.wmhtoolgroup.com Copyright © WMH Tool Group

Table of Contents

Other manuals for Jet JFM-5

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Brochure3 pages

Questions and Answers

  • B
    Brian NavarroAug 12, 2025
    Why does my Jet JFM-5 Power Tool mortiser keep tripping the circuit breaker?
    • B
      bianca74Aug 13, 2025
      Your Jet mortiser might be tripping the circuit breaker due to several reasons. It could be a blown fuse or tripped breaker (replace the fuse or reset the breaker), a damaged cord (replace the cord), or a loose electrical connection (check and tighten all electrical connections). If the mortiser frequently trips, try taking a lighter cut, as too heavy a cut can cause overloading. Also, ensure the mortiser is on a circuit of the correct size. Look for signs of electrical arcing, which indicates loose connections or circuit overload. If these steps don't resolve the issue, the motor or start/stop switch may have failed, requiring professional testing and repair or replacement.
  • M
    Michelle HatfieldAug 16, 2025
    What to do if my Jet JFM-5 Power Tool workpiece burns?
    • E
      Erik DeanAug 16, 2025
      If your workpiece is burning while using the Jet Power Tool, it could be due to a few reasons. The chips might not be clearing from the hole or auger, in which case you should retract the auger frequently to remove chips and ensure the chisel slot opens toward the area already cut. Another cause could be a dull auger, which needs resharpening or replacement. Lastly, you might be feeding the auger too slowly into the workpiece; try increasing the feed rate.
  • K
    kimwilliamsAug 20, 2025
    How to fix excessive vibration in my Jet JFM-5 Power Tool mortiser?
    • L
      Lisa ReeseAug 20, 2025
      Excessive vibration in your Jet mortiser could stem from a couple of issues: The stand might be on an uneven surface, so ensure the machine is placed on a level floor, using shims if necessary. Alternatively, there may be a motor malfunction, requiring repair or replacement.
  • N
    Natasha HornAug 25, 2025
    What to do if my Jet JFM-5 Power Tool auger binds in the workpiece?
    • T
      Tyler RoblesAug 25, 2025
      If the auger binds in the workpiece while using your Jet Power Tool, it could be due to: * The workpiece not being clamped properly, pinching the auger. Ensure you support or clamp the workpiece firmly. * An excessive feed rate. Try decreasing the feed rate. * Loose chuck jaws. Make sure to tighten the chuck jaws.
  • D
    David PaulAug 27, 2025
    Why is my Jet Power Tool mortiser so noisy?
    • J
      John BarnesAug 27, 2025
      A noisy Jet mortiser could be caused by the auger contacting the chisel. Try increasing the offset of the auger in relation to the chisel. Also, inspect and tighten any loose screws, nuts, or other fasteners.
  • M
    Mary SchmidtAug 31, 2025
    Why is my Jet JFM-5 Power Tool auger wandering?
    • C
      Cheryl EricksonAug 31, 2025
      If the auger is wandering while using your Jet Power Tool, it could be due to a few reasons: the auger might be sharpened incorrectly (resharpen the auger), the chuck jaws might not be tight (tighten the chuck jaws), the auger could be bent (replace the auger), or the auger or chuck might not be installed properly (reinstall the chuck or auger properly).
  • S
    Stephanie OconnellSep 4, 2025
    Why is my Jet JFM-5 auger not up to speed?
    • B
      Brian GonzalezSep 4, 2025
      If your Jet Power Tool auger isn't reaching full speed, it may be due to an extension cord that is too light or too long; replace it with a cord of adequate size and length. Another possible cause is low current, in which case you should contact a qualified electrician.
  • J
    johnrobinsonSep 7, 2025
    How to prevent wood splintering on the underside when using my Jet JFM-5 Power Tool?
    • S
      Sarah KirkSep 8, 2025
      To prevent wood splintering on the underside when through-cutting with your Jet Power Tool, place a scrap board underneath the workpiece as a backing board.

Summary

Warranty and Service Information

Product Information and Support Channels

Provides details on obtaining product information and contacting WMH Tool Group for support.

Warranty Coverage and Exclusions

Outlines what is covered, who is covered, warranty periods, and exclusions for JET products.

Service Procedures and Legal Disclaimers

Explains how to get service, state law applicability, and warranty limitations.

General Safety Warnings

Essential Safety Precautions (1-20)

Covers essential safety rules for operating the mortiser, including personal protection and machine setup.

Additional Safety Warnings

Operational Safety Notices and Definitions (21-31)

Provides additional safety rules and explains the meaning of CAUTION and WARNING symbols.

Introduction and Specifications

Mortiser Overview

Introduces the JET Model JFM-5 Hollow Chisel Mortiser and its purpose.

Technical Specifications

Lists detailed technical specifications for the JET Model JFM-5 Hollow Chisel Mortiser.

Machine Features and Terminology

Component Identification Diagram

Identifies and labels key components and controls of the mortiser, including axes of movement.

Unpacking and Initial Check

Shipping Container Contents Verification

Details the parts included in the shipping container and instructions for checking for damage or missing items.

Assembly and Setup

Assembly Preparation and Tools

Lists required tools and preparation steps before assembling the mortiser.

Mounting and Z-Axis Handle Installation

Guides on mounting the mortiser to the stand and installing the Z-axis handle.

Assembly - Table and Work Stop

Table Handwheel, Wood Table, and Work Stop Installation

Instructions for attaching table handwheels, the wood table, and the work stop.

Installing Chisel and Auger

Chisel and Auger Installation Process

Step-by-step guide for installing the chisel and auger, including proper clearance and orientation.

Chisel Slot Orientation Guidance

Provides specific instructions on orienting the chisel slot for effective chip removal during operation.

Chuck Extension Adaptor and Tool Storage

Using the Chuck Extension Adaptor

Instructions on how to use the chuck extension adaptor with short-shank augers.

Accessory Storage Solutions

Information on convenient storage locations for accessories like the chuck key.

Grounding Instructions

Proper Electrical Grounding Procedures

Essential safety guidelines for grounding the machine to prevent electrical shock.

Grounding Instructions - Voltage Specifics

110 V and 230 V Grounding Procedures

Details proper grounding for 110V and 230V operation, including adapter use.

Extension Cord Selection

Guide to Choosing Extension Cords

Provides a chart for selecting the correct gauge extension cord based on amperage and length.

Machine Adjustments

Depth Stop and Table Stop Adjustments

Instructions for setting the depth stop and adjusting table stops for precise operation.

Vise Operation and Gib Adjustment

Guides on operating the workpiece vise and adjusting gibs for smooth machine movement.

Operating the Mortiser

General Operating Procedure and Feed Rates

Step-by-step guide for using the mortiser, including feed rate, chip clearance, and safety notes.

Operational Safety and Best Practices

Highlights critical operational safety points like chisel slot orientation and techniques for deep mortises.

Maintenance and Sharpening

Chisel and Auger Sharpening Techniques

Instructions for sharpening the chisel and auger for optimal performance and longevity.

Lubrication and General Upkeep

Details on lubricating the machine's moving parts and general cleaning recommendations.

Troubleshooting - Power and Operation

Mortiser Start;Trip and Speed Issues

Addresses problems related to starting, tripping breakers, fuse issues, and auger speed.

Machine Operation and Workpiece Problems

Covers issues like noise, workpiece burning, chip clearing, and auger contact.

Troubleshooting - Auger and Workpiece Issues

Auger Path and Workpiece Binding Solutions

Solutions for auger wandering, improper installation, splintering, and workpiece binding.

Replacement Parts Information

Parts Diagram and Ordering Procedure

Illustrates parts of the mortiser and provides information on how to order replacement parts.

Parts List - Components 1-56

Component Identification and Part Numbers (1-56)

Lists parts from index 1 to 56 with part numbers, descriptions, sizes, and quantities.

Parts List - Components 57-103

Component Identification and Part Numbers (57-103)

Lists parts from index 57 to 103 with part numbers, descriptions, sizes, and quantities.

Stand Assembly Details

Stand Assembly Diagram and Components

Illustrates the assembly of the mortiser stand and lists its components with part numbers.

Optional Accessories

Accessory List and Identification

Details optional accessories available for the mortiser, including chuck extension adapters and chisel/bit sets.

Jet JFM-5 Specifications

General IconGeneral
BrandJet
ModelJFM-5
CategoryPower Tool
LanguageEnglish

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