JET, Wilton and Powermatic warrants every product they sell against manufacturers’ defects. If one of our tools
needs service or repair, please contact Technical Service by calling 1-800-274-6846, 8AM to 5PM CST, Monday
through Friday
Warranty Period
The general warranty lasts for the time period specified in the literature included with your product or on the official
JET, Wilton or Powermatic branded websites.
•JET, Wilton and Powermatic products carry a limited warranty which varies in duration based upon the
product. (See chart below)
• Accessories carry a limited warranty of one year from the date of receipt.
• Consumable items are defined as expendable parts or accessories expected to become inoperable within a
reasonable amount of use and are covered by a 90 day limited warranty against manufacturer’s defects.
Who is Covered
This warranty covers only the initial purchaser of the product from the date of delivery.
What is Co vered
This warranty covers any defects in workmanship or materials subject to the limitations stated below. This warranty
does not cover failures due directly or indirectly to misuse, abuse, negligence or accidents, normal wear-and-tear,
improper repair, alterations or lack of maintenance.
Warranty Limitations
Woodworking products with a Five Year Warranty that are used for commercial or industrial purposes default to a
Two Year Warranty. Please contact Technical Service at 1-800-274-6846 for further clarification.
How to Get Technical Support
Please contact Technical Service by calling 1-800-274-6846. Please note that you will be asked to provide pro of
of initia l p u rch a s e whe n calling. If a product requires further inspection, the Technical Service representative will
explain and assist with any additional action needed. JET, Wilton and Powermatic have Authorized Service Centers
located throughout the United States. For the name of an Authorized Service Center in your area call 1-800-274-6846
or use th e Serv i ce Center L ocator on t he JET, Wilton or Powermatic web site.
More Informa t io n
JET, Wilton and Powermatic are consistently adding new products. For complete, up-to-date product information,
check with your local distributor or visit the JET, Wilton or Powermatic website.
How S tate Law A pplies
This warranty gives you specific legal rights, subject to applicable state law.
Limitations on This Warranty
JET, WILTON AND POWERMATIC LIMIT ALL IMPLIED WARRANTIES TO THE PERIOD OF THE LIMITED
WARRANTY FOR EACH PRODUCT. EXCEPT AS STATED HEREIN, ANY IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE EXCLUDED. SOME STATES DO NOT
ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATION MAY NOT
APPLY TO YOU.
JET, WILTON AND POWERMATIC SHALL IN NO EVENT BE LIABLE FOR DEATH, INJURIES TO PERSONS OR
PROPERTY, OR FOR INCIDENTAL, CONTINGENT, SPECIAL, OR CONSEQUENTIAL DAMAGES ARISING FROM
THE USE OF OUR PRODUCTS. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF
INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY
TO YOU.
JET, Wilton and Powermatic sell through distributors only. The specifications listed in JET, Wilton and Powermatic
printed materials and on official JET, Wilton and Powermatic-branded websites are given as general information and
are not binding. JET, Wilton and Powermatic reserve the right to effect at any time, without prior notice, those
alterations to parts, fittings, and accessory equipment which they may deem necessary for any reason whatsoever.
®
branded products are not sold in Canada by JPW Industries, Inc.
JET
Product Listing with Warranty Period
90 Days – Parts; Consumable items; Light-Duty Air Tools
1 Year – Motors; Machine Accessories; Heavy-Duty Air Tools; Pro-Duty Air Tools
2 Year – Metalworking Machinery; Electric Hoists, Electric Hoist Accessories
5 Year – Woodworking Machinery
Limited Lifetime – Wilton branded products; JET Parallel clamps; VOLT Series Electric Hoists;
Manual Hoists; Manual Hoist Accessories; Shop Tools; Warehouse & Dock products; Hand Tools
NOTE: JET, Wilton and Powermatic are divisions of JPW Industries, Inc.. References in this document to JET,
Wilton and/or Powermatic also apply to JP W Indus trie s, Inc., or any of its succe ssors in inte re st to the JET, Wilton
and/or Powermatic brands.
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Table of Contents
Warranty and Service ............................................................................................................................................ 2
Table of Contents .................................................................................................................................................. 3
Hold Down Adjustment ...................................................................................................................................... 8
Depth Stop Rod Adjustment .............................................................................................................................. 8
180° Head Rotation ........................................................................................................................................... 8
Using Bits with Short Shanks ............................................................................................................................ 8
Chisel and Bit Adjustment ................................................................................................................................. 8
Adjusting Chisel Par allel to Workpi ece .............................................................................................................. 9
Replacement Parts ................................................................................................................................................ 9
JBM-5 Benchtop Mortiser – Parts List ............................................................................................................. 11
Introduction
This manual is provided by JET covering the safe operation and maintenance procedures for a JET Model
JBM-5 Mortiser. This manual contains instructions on installation, safety precautions, general operating
procedures, maintenance instructions and parts b reakdown. Thi s machine has bee n de signed and co nstructed
to provide years of trouble free operation if used in accordance with instructions set forth in this manual. If there
are any questions or comments, please contact either your local supplier or JET at: www.jettools.com.
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Warning
• KEEP GUARDS IN PLACE and in order.
• REMOVE ADJUSTING KEYS AND WRENCHES. Form the habit of checking to see that keys and adjusting
wrenches are removed from the tool before turning it on.
• KEEP THE WORK AREA CLEAN. Cluttered areas and benches invite acci den ts.
• DO NOT US E IN A DANGEROUS ENVIRONMENT. Don’t use power tools in damp or wet locations, or expose
them to rain. Keep work area well lighted.
• KEEP CHILDRE N A WAY . All visitors should be kept safe distance from the work area.
• MAKE THE WORKSHOP KID PROOF with padlocks, master switches, or by removing starter keys.
• DON’T FORCE THE TOOL. It will do the job better and safer at the rate for which it was designed.
• USE THE RIGHT TOOL. Don’t force a tool or attachment to do a job for which it was not designed.
• USE THE PROPER EXTEN SI ON CORD. Make sure your extension cord is in good condition. When using an
extension cord, be sure to use one heavy enough to carry the current your product will draw. An undersized cord
will cause a drop in the line voltage resulting in loss of power and overheating. For runs up to 25 feet, use a 16 AWG or larger gauge cord. For runs up to 50 feet, use a 16 AWG or larger cord. For runs up to 100 feet,
use a 14 AWG or larger cord. If in doubt, use the next heavier gauge. The smaller the gauge number, the
heavier the cord.
•WEAR PROPER APPAREL. Do not wear loose clothing, gloves, neckties, rings, bracelets, or other jewelry
which may get caught in moving parts. Nonslip footwear is recommended. Wear protective hair covering to
contain long hair.
•ALWAYS USE SAFET Y GLASSES. Also use face or dust masks if the cutting operation is dusty. Everyday
eyeglasses only have impact resistant lenses, they are NOT safety glasses.
•SECURE WO R K. Use clamps or a vise to hold the work when it’s practical. It’s safer than using your hand and it
frees both hands to operate the tool.
• DON’T OVE RREACH. Keep proper footing and balance at all times.
• MAINTAIN TOOLS WITH CARE. Keep tools sharp and clean for best and safest performance. Follow
instructions for lubricating and changing accessories.
• DISCONNECT TOOLS before servicing; when changing accessories, such as blades, bits cutters, and the like.
• REDUCE THE RISK OF UNINTENTIONAL STARTING. Make sure the switch is in the off position before
plugging in the machine.
•USE RECOMMENDED ACCESSORIES. Consult the owner’s manual for recommended accessories. The use
of improper accessories may cause a risk of injury.
•NEVER STAND ON A TOOL. Serious injury could occur if the tool is tipped or if the cutting tool is unintentionally
contacted.
•CHECK DA MA GED PA RTS. Before further use of the tool, a guard or other part that is damaged should be
carefully checked to determine that it will operate properly and perform its intended function. Check for alignment
of moving parts, binding of moving parts, breakage of parts, mounting, and any other conditions that may affect
its operation. A guard or other part that is damaged should be properly repaired or replaced.
•DIRECTI ON OF FEED. Feed work into a blade or cutter against the direction of rotation of the blade or cutter
only.
•NEVER LEAVE THE TOOL RUNNING UNATTENDED. TURN THE POWER OFF. Don’t leave the tool until it
comes to a complete stop.
•WARNING: Some dust created by power sanding, sawing, grinding, drilling and other construction activities
contains chemicals known to cause cancer, birth defects or other reproductive harm. Some examples of these
chemicals are:
• Lead from lead based paint.
• Crystalline silica from bricks, cemen t and other masonry products.
• Arsenic and chromium from chemically treated lumber.
Your risk of exposure varies, depending on how often you do this type of work. To reduce your exposure to these
chemicals, work in a well-ventilated area and work with approved safety equipment, such as face or dust masks
that are specifically designed to filter out microscopic particles.
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Electrical Requirements
In the event of a malfunction or breakdown, grounding provides a pat h of lea st resistance for electr ic c urrent to
reduce the risk of electric shock. T his tool is equipped with an electric cord having an equipment-gro unding
conductor and a grounding plug. The plug must be plugged into a matching outlet that is properly installed and
grounded in accordance with all local codes and ordinances.
Do not modify the plug provided. If it will not fit the outlet, have the proper outlet installed by a qualified
electrician.
Improper connection of the equipment-grounding conductor can result in a risk of electric shock. The
conductor, with insulation having an outer surface that is green with or without yellow stripes, is the equipmentgrounding conductor. If repair or replacement of the electric cord or plug is necessary, do not connect the
equipment-grounding conductor to a live terminal.
Check with a qualified electrician or service personnel if the grounding instructions are not completely
understood, or if in doubt as to whether the tool is properly grounded.
Use only three wire extension cords that have three-prong grounding plugs and three-pole receptacles that
accept the tool’s plug.*
Repair or replace a damaged or worn cord immediately.
This tool is intended for use on a circuit that has an outlet that looks like the one illustrated in Figure A below.
The tool has a grounding plug that looks like the grounding plug as illustrated in Figure A below. A temporary
adapter, which looks like the adapter as illustrated in Figure B below, may be used to connect this plug to a
two-hole receptacle, as shown in Figure B if a properly grounded outlet is not available.** The temporary
adapter should only be used until a properly grounded outlet ca n be installed by a qualified electric ian. The
green colored rigid ear or tab, extending from the adapter, must be connected to a permanent ground such as
a properly grounded outlet box.
* Canadian electric al c odes require extension cords to be certified SJT type or better.
** Use of an adapter in Canada is not acceptable.
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Specifications
Stock Number ............................................................................................................................................. 708580
Model Number ............................................................................................................................................... JBM-5
Motor ............................................................................................................. TEFC, 1/2HP, 1PH, 115V, 60Hz, 6A
Switch ................................................................................................................. toggle, with r e movable safet y key
Chuck Capacity (max. bit shank diameter) ....................................................................................................... 3/8”
Chisel Capacity ....................................................................................................................................... 1/2” x 1/2”
Head Stroke ................................................................................................................................................... 4-3/4”
Chisel Center to Fence .................................................................................................................................. 3-1/2”
Under Hold-Down ................................................................................................................................................. 4”
Fence Size ................................................................................................................................... 1-9/16” x 13-3/4”
Table Size ........................................................................................................................................... 14” x 12-1/2”
Base Size ..................................................................................................................................... 7-5/8” x 12-3/16”
Bushing Size ....................................................................................................................................... 5/8” and 3/4”
Net Weight ................................................................................................................................................... 44 lbs.
The above specifications were current at the time this manual was published, but because of our policy of continuous
improvement, JET reserves the right to change specifications at any time and without prior notice, without incurring
obligations.
Unpacking
Open shipping container and check for
shipping damage. Report any damage
immediately to your distributor and shipping
agent. Do not discard any shipping material
until the Mortiser is assembled and running
properly.
Compare the contents of your container
with the following parts list to make sure all
parts are intact. Missing parts, if any,
should be reported to your distributor. Read
the instruction manual thoroughly for
assembly, maintenance and safety
instructions.
Contents
A. Mortising Machine
B. Hydraulic Cylinder
C. Handle
D. 3/4” Chisel Bushing
E. 5/8” Chisel Bushing
F. Spindle Extension Adapter
G. Chuck Key
H. Table
I. Hold Down
J. Fence Assembly
K. Screws (2)
L. Owner’s Manual (not shown)
M. Warranty Car d (not shown)
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Assembly
Never connect t he mac hine to
the power source until assembly is completed.
Failure to comply may result in serious injury!
1. Screw the handle (A, Figure 2) into the pinion
shaft (B, Figure 2).
7. Attach the hold down (D, Figure 3) to the
vertical post using locking handle (E, Figure 3).
Figure 3
Installing
Make sure the Mortising
Machine is attached to a firm and stable
support surface.
Figure 2
(chisel and bit not provided)
2. Tighten the handle. The handle has a notch
(C, Figure 2) to accommodate a wrench.
3. Use the handle to raise the machine head to
the up position. The handle is spring loaded
and can be repositioned by pulling the handle
away from the machine, and turned to the
desired angle.
4. With the head in the up position press the
hydraulic cylinder onto the two fittings. The
upper fitting (D, Figure 2) is located on the
head. The lower fitting (E, Fig ure 2) is on the
column.
5. Attach the table to the base using two screws
(A, Figure 3).
6. Insert bar of fence assembly (B, Figure 3)
through the hole in the column. Use the fencelocking handle (C, Figure 3) to adjust fence
assembly.
This machine must be fastened to a supporting
surface to prevent it from tipping during operation.
Four holes (A, Figure 4) in the base are supplied
for this purpose.
Figure 4
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Adjustments
On-Off Switch
The switch (A, Figure 5) has a switch key that,
when p ulled o ut, a llows t he swit ch to b e lock ed in
the off position.
Hold Down Adjustment
The hold down (C, Figure 4) s hould be adjusted so
it just touches the top of the workpiece and allows
the workpiece to slide left or r ight. The hold down
can also be taken off and turned over for a thicker
workpiece. To adjust the hold down, loosen the
locking handle (D, Figure 4).
Depth Stop Rod Adjustment
The depth stop rod (B, Figure 5) is provided to limit
the depth of the chisel cut. Adjust the depth stop
rod using the locking handle (C, Figure 5). Lower
the head until the bottom of the chisel is at the
required depth. Lower the depth stop rod until it is
at rest against the base.
180° Head Rotation
Rem oving t he thre e he x sock et ca p scre ws at the
base will enable you to rotate the head and column
180°. Doing this will let the user mortise taller
items.
Chuck Key Holder
The chuck key holder is located on the left side of
the head.
Figure 5
Handle Adjustment
The handle can be adjusted for leverage and
comfort. Pulling the spring loaded handle (A,
Figure 6) away from the head and turning allows
you to change the position of the handle.
Figure 6
Fence Adjustment
Using Bits with Short Shanks
When using bits with short shanks, it will be
necessary to attach the spindle extension adaptor.
Place an open wrench on the flat part of the m otor
spindle. Use the chuck key to unscrew and remove
the chuck. Attach the spindle extension to the
chuck. Replace the chuck with the spindle
extension into the motor spindle.
Chisel and Bit Adjustment
See Figure 7.
Note: Chisels and bits are available as optional
accessories.
The fence can be moved in and out by loosening
the locking handle (B, Figure 4) on the column.
Figure 7
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1. Insert chisel bushing with hole f acing forward
into the head. Tighten the screw just enough to
hold the chisel in place.
2. Insert bit into the chisel. The opening in the
chisel should always face to the right or left.
The opening allows chips to escape during
operation.
3. Push the chisel up as far as possible into the
head. Then lower the chisel approximately
1/16” to 3/16”. This may vary depending upon
type of wood. Table 1 shows general
guidelines for distance between points of
chisel and bit point.
4. Tighten the screw to hold chisel in place.
5. Push bit up t hrough the chisel opening as f ar
as it will go. Lock the drill bit in place with
chuck key.
6. Loosen screw and push chisel up against t he
bushing, and tighten the screw. This should
provide the proper distance between the points
of the chisel and the bit.
Type of wood Chisel Size Distance
Softwoods
Hardwoods
1/4 to 3/8 1/32
1/2 1/16 to 3/32
1/4 to 3/8 1/16
1/2 3/32 to 1/8
Table 1
(all dimensions inches)
Adjusting Chisel Parallel to
Workpiece
The chisel can be adjusted parallel to the
workpiece by loosening the screw (A, Figure 8) and
rotating the chisel until the back surface of the
chisel is flat against the workpiece. Tighten the
screw to hold chisel in place.
Figure 8
Storage
If the mortiser will be stored for an extended
period, use the depth stop to help secure the head
in position; this will relieve stress upon the
hydraulic cylinder.
Optional Accessories
1791091 Premium 1/4" Mortise Bit and Chisel Set
1791092 Premium 5/16" Mortise Bit and Chisel Set
1791093 Premium 3/8" Mortise Bit and Chisel Set
1791094 Premium 1/2" Mortise Bit and Chisel Set
Replacement Parts
Replacement parts are listed on the followi ng pages. To order parts or reach our service departm ent, call 1800-274-6848 Monday through Friday, 8:00 a.m. to 5:00 p.m. CST. Having the Model Number and Serial
Number of your machine availa ble w hen you call will allow us to serve you quickly and accurat ely.
15 .............. 23011057 .................. Hold Down ............................................................... ...................................... 1
16 .............. 23011058 .................. Hold Down Pos t ....................................................... ...................................... 1
17 .............. 23011059 .................. Fen ce Rod ............................................................... ...................................... 1
35 .............. 23011065 .................. Hand le Rod .............................................................. ...... ................................ 1
36 .............. 23011019 .................. Hand le Grip.............................................................. ...................................... 1
40 .............. 23011033 .................. Bushin g .................................................................... 5/8” ................................ 1
41 .............. 23011034 .................. Bushin g .................................................................... 3/4" ................................ 1
42 .............. 23011021 .................. Cap .......................................................................... ...................................... 1