Jet Tools JWBS-20 User Manual

OWNER'S MANUAL

JWBS-20 Woodworking Bandsaw

JET EQUIPMENT & TOOLS, INC. P.O. BOX 1349 Phone: [phone]

A WMH Company Auburn, WA 98071-1349 Fax: [phone]
www.jettools.com e-mail [e-mail] M-708752 11/01

This manual has been prepared for the owner and operators of a JET JWBS-20 Woodworking Bandsaw.
Its purpose, aside from machine operation, is to promote safety through the use of accepted correct
operating and maintenance procedures. Completely read the safety and maintenance instructions before
operating or servicing the machine. To obtain maximum life and efficiency from your Bandsaw, and to
aid in using the machine safely, read this manual thoroughly and follow instructions carefully.

Warranty & Service

The JET Group warrants every product it sells. If one of our tools needs service or repair, one of our
Authorized Repair Stations located throughout the United States can give you quick service.

In most cases, any one of these JET Group Repair Stations can authorize warranty repair, assist you in
obtaining parts, or perform routine maintenance and major repair on your JET, Performax or Powermatic
tools.

For the name of an Authorized Repair Station in your area, please call 1-800-274-6848.

More Information

Remember, the JET Group is consistently adding new products to the line. For complete, up-to-date
product information, check with your local JET Group distributor.

JET Group Warranty

The JET Group (including Performax and Powermatic brands) makes every effort to assure that its
products meet high quality and durability standards and warrants to the original retail
consumer/purchaser of our products that each product be free from defects in materials and
workmanship as follow: 1 YEAR LIMITED WARRANTY ON ALL PRODUCTS UNLESS SPECIFIED
OTHERWISE. This Warranty does not apply to defects due directly or indirectly to misuse, abuse,
negligence or accidents, normal wear-and-tear, repair or alterations outside our facilities, or to a lack of
maintenance.

THE JET GROUP LIMITS ALL IMPLIED WARRANTIES TO THE PERIOD SPECIFIED ABOVE, FROM
THE DATE THE PRODUCT WAS PURCHASED AT RETAIL. EXCEPT AS STATED HEREIN, ANY
IMPLIED WARRANTIES OR MERCHANTIBILITY AND FITNESS ARE EXCLUDED. SOME STATES
DO NOT ALLOW LIMITATIONS ON HOW LONG THE IMPLIED WARRANTY LASTS, SO THE ABOVE
LIMITATION MAY NOT APPLY TO YOU. THE JET GROUP 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 EXLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL
DAMAGES, SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY TO YOU.

To take advantage of this warranty, the product or part must be returned for examination, postage
prepaid, to an Authorized Repair Station designated by our office. Proof of purchase date and an
explanation of the complaint must accompany the merchandise. If our inspection discloses a defect, we
will either repair or replace the product, or refund the purchase price if we cannot readily and quickly
provide a repair or replacement, if you are willing to accept a refund. We will return repaired product or
replacement at JET’S expense, but if it is determined there is no defect, or that the defect resulted from
causes not within the scope of JET’S warranty, then the user must bear the cost of storing and returning
the product. This warranty gives you specific legal rights; you may also have other rights which vary
from state to state.

The JET Group sells through distributors only. Members of the JET Group 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.

2



WARNING

1. Read and understand the entire instruction manual before attempting assembly or operation.

2. This band saw is designed and intended for use by properly trained and experienced

personnel only. If you are not familiar with the proper and safe operation of a bandsaw, do
not use until proper training and knowledge have been obtained.

3. Always wear approved safety glasses/face shields while using this machine.

4. Make certain the machine is properly grounded.

5. Before operating the machine, remove tie, rings, watches, other jewelry, and roll up sleeves above
the elbow. Remove all loose clothing and confine long hair. Do not wear gloves.

6. Keep the floor around the machine clean and free of scrap material, oil and grease.

7. Keep the machine guards in place at all times when the machine is in use. If removed for
maintenance purposes, use extreme caution and replace the guards immediately.

8. Do not over reach. Maintain a balanced stance at all times so that you do not fall or lean against
blades or other moving parts.

9. Make all machine adjustments or maintenance with the machine unplugged from the power source.

10. Use the right tool. Don’t force a tool or attachment to do a job which it was not designed for.

11. Replace warning labels if they become obscured or removed.

12. Make certain the bandsaw power switch is in the off position before connecting the machine to the
power supply.

13. Give your work undivided attention. Looking around, carrying on a conversation, and “horse-play”
are careless acts that can result in serious injury.

14. Keep visitors a safe distance from the work area.

15. Use recommended accessories; improper accessories may be hazardous.

16. Adjust and position upper and lower blade guides before starting to cut. Upper blade guide should be
adjusted to approximately 1/8” above the material to be cut.

17. Adjust blade tension and tracking before starting to cut.

18. Always keep hands and fingers away from the blade when the machine is running.

19. Stop the machine and wait for the blade to stop moving before removing scrap material from the
table.

20. Use suitable support if stock does not have a flat surface.

21. Hold material firmly against the table.

22. Saw teeth must point down toward the table.

23. Some dust created by power sanding, sawing, grinding, drilling and otherconstruction activities
contains chemicals known to cause cancer, birth defects or other reproductive harm. Some
examples of these chemicals are:

• Lead from lead based paint

• crystallinesilica from bricks and cement andother masonryproducts, and

• arsenic and chromium from chemically-treated lumber.

24. Your risk from those exposures 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 those dust masks that are specifically designed to filter out microscopic particles.

25. Do not operate tool while under the influence of drugs, alcohol or any medication.

26. Failure to comply with all of these warnings may cause serious injury.

3

Table of Contents

Warranty .................................................................................................................................................2

Warnings ....................................................................................................................... ..........................3

Table of Contents....................................................................................................................................4

Specifications..........................................................................................................................................4

Contents of Shipping Container ...............................................................................................................5

Unpacking and Setup...............................................................................................................................5

Tools Included for Assembly....................................................................................................................5

Tools Required for Assembly and Adjustments........................................................................................5

Upper Bearing Guide Adjustment.............................................................................................................6

Lower Bearing Guide Adjustment.............................................................................................................7

Mounting the Table..................................................................................................................................7

Adjusting 90 Degree Table Stop..............................................................................................................8

Rail Assembly..........................................................................................................................................8

Fence Assembly and Adjustment ..................................................................................................... ........9

Resaw Guide.........................................................................................................................................10

Miter Gauge...........................................................................................................................................10

Tilting the Table.....................................................................................................................................10

Height Scale Adjustment .......................................................................................................................10

Changing Blades ...................................................................................................................................11

Adjusting Blade Tension........................................................................................................................12

Adjusting Blade Tracking.......................................................................................................................12

Brake Pedal...........................................................................................................................................13

Replacing Belt.......................................................................................................................................13

Adjusting Belt Tension...........................................................................................................................13

Electrical Connections ...........................................................................................................................14

Maintenance..........................................................................................................................................14

Troubleshooting.....................................................................................................................................15

Part’sBreakdowns and Part’sList.....................................................................................................16-25

Electrical Schematics............................................................................................................................26

Specifications: JWBS-20

Stock Number................................................................................................................................708752

Cutting Capacity (HxW).........................................................................................................12-1/2” x 20”

Maximum Rip Left of Blade w/Fence..............................................................................................18-1/4”

Maximum Rip Right of Blade w/Fence..............................................................................................9-3/4”

Blade Length ...................................................................................................................................... 150”

Minimum Blade Width.........................................................................................................................1/8”

Maximum Blade Width.....................................................................................................................1-1/2”

Table Size...................................................................................................................................21” x 21”

Table Tilt...............................................................................................................................45°Rto10°L

Table Height...................................................................................................................................36-1/8”

Front Table to Center of Blade.............................................................................................................. 11”

Wheel Diameter .............................................................................................................................20-1/2”

Blade Speed.......................................................................................................................... 3,450 SFPM

Dust Chute Diameter..............................................................................................................................4”

Overall Dimensions (HxWxD)...........................................................................75-1/4” x 41-1/4” x 34-1/2”

Motor (TEFC)............................................................................................................................2 HP, 1Ph

................................................................................................................................................. 230V only

Net Weight (approx.) .....................................................................................................................500 lbs.

Shipping Weight (approx.).............................................................................................................564 lbs.

The specifications in this manual are given as general information and are not binding. JET Equipment
and Tools reserves the right to effect, at any time and without prior notice, changes or alterations to
parts, fittings, and accessory equipment deemed necessary for any reason whatsoever.

4

Contents of Shipping Container

1. Bandsaw

1. Table

1. Fence and Rail Assembly

1. Resaw Guide and Knob

1. Miter Gauge

1. Owner’s Manual

1. Warranty Card

1. Hardware Package

2. Knobs

1. Hex Wrench

1. Handle

1. 10/12mm Wrench

1. Fence Hardware Bag

4. Hex Cap Screws

4. Flat Washers

4. Lock Washer

1. Rail Hardware Bag

9. Hex Cap Screws

9. Flat Washers

9. Lock Washers

Unpacking and Setup

1. Remove the crate and packing material

from the saw except for the transport skid
on the bottom.

2. Move the saw to its permanent working

location. The site should be dry, well lit, and
have enough room to handle long stock and
the service and/or adjustment of the
machine from any side.

3. Move the bandsaw off the skid.

4. Clean all rust protected surfaces with a mild

solvent or diesel fuel and a soft cloth. Do
not use lacquer thinner, paint thinner, or
gasoline. These will damage painted
surfaces.

Tools Included for Assembly

1. 10/12mm Open End Wrench

1. Hex Wrench

Tools Required for Assembly &
Adjustments

2. 14mm Open End Wrench

1. Cross Point Screw Driver

1. Combination Square

5

Assembly and Setup

1. Attach the handle (A, Fig. 1) to the

handwheel (B, Fig. 1).

2. Turn blade tension hand wheel (C, Fig. 1)

counter-clockwise to tension blade and
clockwise to loosen the tension. A gauge on
the upper wheel slide bracket (D, Fig. 1)
indicates the approximate tension according
to the width of the blade. The JWBS-20
comes with a 1” blade so the tension should
besetat1”.

Note: It is easier to adjust the bearing guides
before mounting the table.

Upper Bearing Guide Adjustment



WARNING

Disconnect machine from the power source,

unplug before making any adjustments!

Blade teeth are sharp! Use care when

working near the saw blade.

Failure to comply may cause serious injury!

1. Disconnect the machine from the power

source, unplug.

2. Blade tension must be properly adjusted

prior to bearing guide setup, see “Adjusting
Blade Tension” page 13.

3. Adjust the back-up bearing (E, Fig. 2) so

that it is 0.003” away from the back of the
blade, about the thickness of a piece of
paper. To make this adjustment loosen
thumb screw (F, Fig. 2) and slide the
bearing and bearing post into position.
Tighten thumb screw.

4. Loosen the socket head cap screw (G, Fig.

3) and slide the bearing assembly until the
bearing guides rest just behind the gullet of
the blade teeth. You may need to readjust
the back-up bearing.

5. Loosen the wing nut (H, Fig. 3) and turn the

adjusting screw (I, Fig. 3) clockwise or
counter-clockwise until the bearing is 0.003”
away from the side of the blade, about the
thickness of a piece of paper. Tighten wing
nut.

6. Adjust the opposite side bearing.

7. Check to make sure the adjustments have

not changed and the bearing guides do not
pinch the blade.

6

Lower Bearing Guide Adjustment



WARNING

Disconnect machine from the power source,

unplug before making any adjustments!

Blade teeth are sharp! Use care when

working near the saw blade.

Failure to comply may cause serious injury!

1. Disconnect the machine from the power

source, unplug.

2. Blade tension must be properly adjusted

prior to bearing guide setup, see “Adjusting
Blade Tension” page 13.

3. Adjust the back-up bearing (A, Fig. 4) so

that it is 0.003” away from the back of the
blade, about the thickness of a piece of
paper. To make this adjustment loosen
thumb screw (B, Fig. 4) and slide the
bearing, and bearing post into position.
Tighten thumb screw.

4. Loosen the socket head cap screw (C, Fig.

4) and slide the bearing assembly until the
bearing guides rest just behind the gullet of
the blade teeth. You may need to readjust
the back-up bearing. Tighten socket head
cap screw.

5. Loosen the thumb screw (D, Fig. 4) and turn

adjusting screw (E, Fig. 4) clockwise or
counter-clockwise until the bearing is 0.003”
away from the side of the blade, about the
thickness of a piece of paper.

6. Adjust the opposite side bearing.

7. Tighten thumb screw (D, Fig. 4). Check to

make sure the adjustments have not
changed and the bearing guides do not
pinch the blade.

Mounting the Table

1. With help from another person mount the

table. Remove the table insert (F, Fig. 5)
and table pin (G, Fig. 5).

2. Slide saw blade through slot in table where

the table pin was located. Rotate the table
90 degrees so that the miter slot is parallel
to the blade, and to the right of the blade
when facing the bandsaw.

3. Line up the trunnions so that the bolts feed

through the trunnion support bracket.
Secure the table with two lock knobs (H, Fig.

6). Reinstall the table insert and table pin.
7

Adjusting90DegreeTableStop

1. Blade tension must be properly adjusted
prior to adjusting 90 degree stop, see
“Adjusting Blade Tension” page 13.

2. Loosen lock knobs (A, Fig. 7) and tilt table
until it rests against table stop bolt (B, Fig.

7). Tighten knobs.

3. Use a square (E, Fig. 8) placed on the table
and against the blade to see if the table is
90 degrees to the blade.

4. If an adjustment is necessary, loosen the
lock knobs. Tilt the table until it is square to
the blade, and tighten the lock knobs.

5. Loosen lock nut (C, Fig. 7) and turn table
stop bolt (B, Fig. 7) until it contacts the
table. Tighten the nut (C, Fig. 7) to hold
table stop in place. When tightening the nut
hold the table stop bolt in place with a
wrench to prevent movement.

6. If necessary, adjust pointer (D, Fig. 7) to
zero.

Rail Assembly

1. Attach the front rail (F, Fig. 9) to the cast

iron table with two 1/4” x 5/8” hex cap bolts,
two 1/4” lock washers, and two 1/4” flat
washers. Bolts should be in approximately
the center of the slot. Hand tighten only at
this time.

2. Attach the rear rail (G, Fig. 9) to the table

with two 1/4” x 5/8” hex cap bolts, two 1/4”
lock washers, and two 1/4” flat washers.
Bolts should be in approximately the center
of the slot. Hand tighten only at this time.

3. Push the front, and rear rails up as far as

they will go.

4. Tighten the four hex cap bolts holding the

front, and rear rails to the table. Do not
over tighten the bolts.

5. Attach the guide tube (H, Fig. 9) to the front

rail with five 1/4” x 5/8” hex cap bolts, five
1/4” lock washers, and five 1/4” flat washers.
Bolts should be in approximately the center
of the slot.

8

Fence Assembly and Adjustment

1. Attach the fence (A, Fig. 10) to the fence

body (B, Fig. 10) with four 5/16” x 3/4” hex
cap bolts, four 5/16” lock washers, and four
5/16” flat washers.

2. Thread a hex nut (D, Fig. 11) onto the pad’s

threaded stud (E, Fig. 11) and insert through
the fence and rear hook (F, Fig. 11).
Secure in place using a hex nut, lock washer
and flat washer (G, Fig. 11).

Note: The hook should be adjusted so that it
overlaps the rear rail by approximately 1/8”.

3. Place fence assembly onto the guide tube.

The rear hook should engage the rear rail.

4. Check the clearance between the table and

the fence. The gap should be the same at
the front of the table as it is at the rear. If
the gap width is different, adjust the foot at
the rear of the fence until the gap width is
the same, Figure 12.

Note: You can also adjust the front rail, or rear
rail up, or down to achieve the proper clearance.

5. With a square verify the fence face is

perpendicular to the table top. If it is not the
front rail will need to be adjusted parallel to
the table top. This can be accomplished by
measuring from the top of the table to the
top of the front rail. The measurement
should be the same at both ends of the
table.

6. Move the fence assembly so that it aligns

parallel to the blade, and lock the fence by
pushing the lock handle down, Figure 10.

7. Loosen the four hex cap bolts that hold the

fence, to the fence body, and align the fence
to the blade. Tighten the four hex cap bolts.

8. Check to see that the pointer (C, Fig. 10) is

aligned with the zero marking on the guide
rail. If adjustment is necessary loosen the
screw that holds the pointer in place and line
up to the zero mark. Tighten the screw.

Note: If you cannot get the pointer lined up with
the zero mark you can slide the guide tube and
front rail left, or right to achieve the proper
setting.

9

Resaw Guide

For resawing attach the post (A, Fig. 13) to
fence with the lock knob (B, Fig. 13). There is a
slotted hole in the fence that will accommodate
the resaw kit. Position the post so that it is
centered with the front edge of the blade.

Miter Gauge

1. Place the miter gauge in the table slot.

2. With a square verify the miter gauge face is

square to the blade.

3. If the miter gauge is not square to the blade

loosen the lock knob (C, Fig. 13) and adjust
to the proper setting. Tighten the lock knob.

4. If the pointer is not at 90 degrees, loosen

the screw (D, Fig. 13) holding the pointer
and move the pointer to 90 degrees.

Tilting the Table

1. Disconnect the machine from the power

source, unplug.

2. Loosen the lock knobs (E, Fig. 14).

3. Tilt table up to 45 degrees to the right, or up

to 10 degrees to the left.

4. Tighten the lock knobs.

Note: Table stop bolt (F, Fig. 14) must be
removedtotilttabletotheleft.

Height Scale Adjustment

1. Disconnect the machine from the power

source, unplug.

2. The upper bearing guide should be set

about 1/8” above the material to be cut.

3. Measure from the table top to the bottom of

the bearing guides.

4. Set the indicator to this measurement on the

height scale. Grasp the end of the indicator
(G, Fig. 15) between your finger, and thumb.
Move the indicator into position.

10

Changing Blades



WARNING

Disconnect machine from the power source,

unplug!

Blade teeth are sharp! Use care when

handling the saw blade.

Failure to comply may cause serious injury!

1. Disconnect the machine from the power
source.

2. Remove the table insert (A, Fig. 16), and
table pin (B, Fig. 16).

3. Lower the upper blade guide assembly
about half way by loosening the lock knob
(F, Fig. 17) and turning the hand wheel (G,
Fig. 17)

4. Loosen socket head cap screw (C, Fig. 16)
and slide the bearing assembly back as far
as it will go.

5. Open both wheel covers (D, Fig. 16).

6. Loosen blade tension by turning blade
tension hand wheel (E, Fig. 17) clockwise
until it stops.

Note: You may want to wear leather work
gloves while removing and handling the blade.

7. Carefully remove blade from upper and
lower wheels. Remove the blade from
between upper, and lower bearing guides.
Turn blade and direct through slot in table.

8. Make sure blade teeth point down toward
table and guide the new blade through table
slot. Place blade in upper, and lower
bearing guides.

9. Place blade in the middle of the upper and
lower wheels.

10. Spin the upper wheel a number of
revolutions and see where the blade lines
up. Tension and track blade before
operating saw. Find instructions for
tensioning and tracking the blade on the
next page under "Adjusting Blade Tension"
and "Adjusting Blade Tracking".

11. Replace table insert and table pin.

11

Adjusting Blade Tension

1. Disconnect machine from the power
source, unplug.

2. Turn blade tension hand wheel (A, Fig. 18)
counter-clockwise to tension blade, and
clockwise to loosen the tension. A gauge on
the upper wheel slide bracket (B, Fig. 18)
indicates the approximate tension according
to the width of the blade. The JWBS-20
comes with a 1” blade so the tension should
be set at 1” when using this blade.

• As you become familiar with the saw, you
may find it necessary to change the blade
tension from the initial setting. Changes in
blade width, and the type of material being
cut will have an effect on blade tension.

• Keep in mind that too little, or too much
blade tension can cause blade breakage
and/or poor cutting performance.

Adjusting Blade Tracking

blade on the wheel. Rotating knob (C, Fig.

19) counter-clockwise should move the
blade towards the front of the wheel.
Rotating the knob (C, Fig. 19) clockwise
should move the blade towards the back of
the wheel.

6. Continue with adjustments until the blade is
tracking properly.

7. Tighten the wing nut (E, Fig. 19) after blade
is tracking in the center of the wheel.



WARNING

Disconnect machine from the power source!

Never adjust blade tracking with the

machine running!

Failure to comply may cause serious injury!

Note: Blade tracking has been adjusted at the

factory. If, how ever, it is determined that blade
tracking needs adjustment, make this
adjustment with knob (C, Fig. 19).

Do not use knobs (D, Fig. 19). They are used
by the factory for wheel alignment not tracking.

1. Disconnect the machine from the power

source.

2. Blade must be properly tensioned before
adjusting blade tracking. Make sure upper
and, lower bearing guides do not interfere
with the blade while adjusting the tracking.

3. Open upper wheel door. Rotate the wheel
forward, and observe the position of the
blade on the wheel. The blade should rest
in approximately the center of the wheel.

4. If adjustment is necessary, loosen the wing
nut (E, Fig. 19) at the top rear of the saw.

5. Adjust tracking by turning the knob (C, Fig.

19) in 1/4 turn increments. Rotate the wheel
forward, and observe the position of the

12

Brake Pedal

Depress the brake pedal (A, Fig. 20) while the
saw is running to stop the saw. Re-start the saw
by pressing the on switch.

Replacing Belt

1. Disconnect the machine from the power
source.

2. Release blade tension by turning blade
tension hand wheel clockwise.

3. Release belt tension by loosening the hex
cap bolt (B, Fig. 20). Raise the motor and
place a block of wood under the motor to
take the tension off the belt.

4. Open the lower wheel door and remove hex
nut, and washer (C, Fig.21).

5. If the lower wheel does not come off easily
you may need to use a pulley puller (D, Fig.

22) to remove the lower wheel.

6. Remove the old belt (E, Fig. 22) and
replace the belt.

7. Reinstall the lower wheel and tighten the
hex nut.

8. Set the blade tension. See “Adjusting Blade
Tension” on the previous page.

9. Remove the wood block, or support from
below the motor and adjust the belt tension.
See “Adjusting the Belt Tension.”

10. Check the blade tracking. See “Adjusting
Blade Tracking” on the previous page.

Adjusting Belt T ension

The belt comes adjusted from the factory. If
adjustment is needed:

1. Disconnect the machine from the power

source.

2. Set the belt tension by lightly pressing down
on the motor and tightening the hex cap
screw (B, Fig. 20).

3. The weight of the motor should put enough
tension on the belt. You just want to push
down lightly to take up any slack.

13

Electrical Connections



WARNING!

All electrical connections must be done by a

qualified electrician!

Failure to comply may result in loss of

property and/or serious injury!

• JWBS-20 is rated at 2 HP, 1Ph, 230V
only.

A plug needs to be purchased for the bandsaw
that matches the outlet you intend to use (A,
Fig. 23).

Confirm power at the site is the same as the
saw before making any electrical connections.
Review the electrical schematic on page 26.

The on/off switch (B, Fig. 24) is thermally
protected. If the saw motor is overloaded, or a
momentary interruption of electrical current is
sensed, the saw will shut off. Allow a few
minutes for the saw to cool down and reset by

pushing the off button.

Maintenance

Keep bearing guides clean and free of build up.
Do not let saw dust build up in the upper and

lower wheel housings. Vacuum out frequently.
Keep the brake switch, located in the lower

wheel housing, clean and free of saw dust.
Connect the bandsaw to a JET dust collection

system.
Clean and grease the raising/lowering rack for

the upper bearing guides if it becomes difficult
to raise, or lower.

Clean, and oil the tensioning mechanism if it
becomes difficult to adjust.

Vacuum out the motor fan cover.

14

Troubleshooting

Trouble Possible Cause Solution

Saw stops or will not start

Does not make accurate 45°°°° or
90°°°° cuts

Blade wanders during cut

1. Overload tripped

2. Saw unplugged

3. Fuse blown or circuit breaker
tripped

4. Cord damaged

1. Stop not adjusted correctly

2. Angle pointer not set
accurately

3. Miter gauge out of
adjustment

1. Fence not aligned with blade

2. Warped wood

3. Excessive feed rate

4. Incorrect blade for cut

1. Allow motor to cool and reset
by pushing off switch

2. Check plug connections

3. Replace fuse or reset circuit
breaker

4. Replace cord

1. Check blade with square and
adjust stop

2. Check blade with square and
adjust pointer

3. Adjust miter gauge

1. Check and adjust fence

2. Select another piece of wood

3. Reduce feed rate

4. Change blade to correct type

Saw makes unsatisfactory
cuts

Blade does not come up to
speed

Saw vibrates excessively

1. Dull blade

2. Blade mounted wrong

3. Gum or pitch on blade

4. Incorrect blade for cut

5. Gum or pitch on table

1. Extension cord too light or to
long

2. Low shop voltage

1. Base on uneven floor

2. Bad V-belt

3. Bent pulley

4. Improper motor mounting

5. Loose hardware

1. Replace blade

2. Teeth should point down

3. Remove blade and clean

4. Change blade to correct type

5. Clean table

1. Replace with adequate size
cord

2. Contact your local electric
company

1. Reposition on flat, level
surface

2. Replace V-belt

3. Replace pulley

4. Check and adjust motor

5. Tighten hardware

15

Upper Wheel Assembly

16

Upper Wheel Assembly

Index Part
No. No. Description Size Qty.

1.......... JWBS20-501....................Saw Body...................................................... ...................................1

2.......... JWBS20-49......................Key................................................................ 7 x 7 x 25 ................... 1

3.......... BB-6205LLU .................... Ball Bearing...................................................6205 ...........................2

4.......... TS-0720091 ..................... Lock Washer................................................. 3/8..............................1

5.......... JWBS20-44......................Upper Wheel Bearing Bracket ....................... ...................................1

6.......... JWBS20-506....................Lock Nut........................................................ 3/4-16 UNF R.H..........1

7.......... TS-0270051 ..................... Socket Set Screw.......................................... 5/16-18 x 1/2 ..............5

8.......... JWBS20-40......................C-Ring........................................................... S-20 ...........................2

9.......... JWBS20-43......................Lever Shaft ................................................... ...................................1

10........JWBS20-42...................... Upper Adjustment Bracket............................. ...................................1

11........JWBS20-39...................... Upper Wheel Guide Bracket.......................... ...................................1

12........JWBS20-38...................... Adjustment Bracket....................................... ...................................1

13........JWBS20-41A................... Wing Nut....................................................... ...................................1

14........JWBS20-41...................... Lock Knob..................................................... ...................................1

15........JWBS20-37...................... Adjustment Screw.......................................... ................................... 1

16........JWBS20-36...................... Elevator Bracket............................................ ...................................1

17........JWBS20-35...................... Spring............................................................ ...................................2

18........JWBS20-34...................... Guide Bar...................................................... ...................................2

19........JWBS20-56D................... Screw............................................................3/16 x 5/8 ................... 3

20........JWBS20-56B................... Bracket.......................................................... ...................................1

21........JWBS20-56A................... Pointer........................................................... ...................................1

22........JWBS20-56C................... Lock Washer.................................................3/16............................3

23........JWBS20-33...................... Upper Wheel Bracket Base ........................... ...................................1

24........JWBS20-32...................... Bracket Shaft................................................. ...................................2

25........JWBS20-525.................... Upper Wheel Shaft........................................ ...................................1

26........TS-0720081..................... Lock W asher................................................. 5/16 ............................2

27........TS-0590061..................... Wing Nut....................................................... 5/16............................2

28........JWBS20-54...................... Lock Knob..................................................... ...................................2

29........TS-0680041..................... Flat Washer...................................................3/8..............................6

30........TS-0060081..................... Hex Cap Bolt................................................. 3/8 x 1-3/4..................6

31........JWBS20-56E................... Blade Width Gauge....................................... ...................................1

32........JWBS20-532.................... Upper Wheel ................................................. ...................................1

33........JWBS20-21...................... Ti re................................................................ ...................................1

34........TS-0680091..................... Flat Washer...................................................3/4..............................1

35........JWBS20-22...................... Hex Nut......................................................... 3/4-16UNF L.H...........1

36........709482............................. 1/4" x 0.025” x 6 Skip Blade .......................... 150”..............................

............ 709483............................. 3/8” x 0.025 x 4 Skip Blade............................150”..............................

............ 709484............................. 1/2" x 0.025 x 3 Hook Blade.......................... 150”..............................

............ 709485............................. 3/4" x 0.032 x 3 Hook Blade.......................... 150”..............................

............ 709486............................. 1” x 0.035 x 2 Hook Blade............................. 150”..............................

............ 709487............................. 1-1/4” x 0.035 x 1.3 Hook Blade ....................150”..............................

37........JWBS20-537.................... Screw............................................................ 3/16 x 3/4 ...................2

38........JWBS20-14...................... On/Of f Switch................................................ 230V, 1Ph...................1

39........JWBS20-539.................... Upper Front Door........................................... ...................................1

40........JWBS18-140.................... JET Plaque.................................................... ...................................1

41........JWBS18-141.................... Warning Label............................................... ...................................1

42........JWBS20-542.................... Door Stud...................................................... ...................................1

43........TS-0561011..................... Hex Nut......................................................... 1/4 x 20......................1

44........JWBS20-544.................... Switch Plate .................................................. ...................................1

45........JWBS20-50...................... Hand Wheel .................................................. ...................................1

17

Lower Wheel and Motor Assembly

18

Lower Wheel and Motor Assembly

Index Part
No. No. Description Size Qty.

1.......... JWBS20-201....................Bearing Base..................................... ...............................................1

2.......... JWBS20-62......................Adjusting Bolt.................................... ...............................................4

3.......... TS-0720091 ..................... Lock Washer.....................................3/8 ..........................................6

4.......... TS-0060081 ..................... Hex Cap Bolt.....................................3/8 x 1-3/4...............................4

5.......... BB-6205ZZ ...................... Ball Bearing.......................................6205........................................2

6.......... JWBS20-206....................Spindle.............................................. ...............................................1

7.......... JWBS20-49......................Key....................................................7 x 7 x 25................................1

8.......... TS-0680021 ..................... Flat Washer.......................................1/4 ........................................15

9.......... VB-B42 ............................ V-Belt................................................ ...............................................1

10........JWBS20-532.................... Lower Wheel ..................................... ...............................................1

11........JWBS20-21...................... Ti re.................................................... ...............................................1

12........TS-0680091..................... Flat Washer.......................................3/4 ..........................................1

13........JWBS20-22...................... Hex Nut.............................................3/4-16UNF L.H........................1

14........JWBS20-214.................... Hex Nut............................................. 3/4-16UNF R.H.......................1

15........JWBS20-215.................... Bearing Cover................................... ...............................................1

16........TS-0720071..................... Lock W asher.....................................1/4 ..........................................3

17........JWBS20-217.................... Screw................................................1/4 x 3/8..................................3

18........JWBS20-218-1................. Motor.................................................2HP, 1Ph, 230V Only..............1

............ JWBS20-218B................. Start Capacitor (not shown) ............... ...............................................1

............ JWBS20-218C................. Run Capacitor (not shown) ................ ...............................................1

............ JWBS20-218D................. Capacitor Cover (not shown)............. ...............................................1

............ JWBS20-218E................. Fan (not shown)................................. ...............................................1

............ JWBS20-218F ................. Fan Cover (not shown)...................... ...............................................1

............ JWBS20-218G................. Centrifugal Switch (not shown) .......... ...............................................1

19........JWBS18-219.................... Motor Bracket .................................... ...............................................1

20........TS-0081031..................... Hex Cap Blot.....................................5/16 x 3/4................................4

21........TS-0680031..................... Flat Washer.......................................5/16.........................................4

22........TS-0060051..................... Hex Cap Bolt.....................................3/8-16 x 1................................2

23........TS-0720091..................... Lock W asher.....................................3/8 ..........................................2

24........TS-0680041..................... Flat Washer.......................................3/8 ..........................................2

25........JWBS20-225.................... Motor Pulley...................................... ...............................................1

26........TS-0267041..................... Set Screw..........................................1/4-20 x 3/8.............................2

27........JWBS20-227.................... Lower Front Door............................... ...............................................1

28........JWBS20-542.................... Door Stud.......................................... ...............................................1

29........TS-0561011..................... Hex Nut.............................................1/4-20 .....................................1

30........JWBS20-2 ....................... Lock Knob......................................... ...............................................1

31........JWBS20-3 ....................... Screw................................................1/4 x 3/4.......................... ........1

32........JWBS20-8 ....................... Dust Chute........................................ ...............................................1

33........TS-0680031..................... Flat Washer.......................................5/16.........................................2

34........TS-0051051..................... Hex Cap Bolt.....................................5/16-18 x 1..............................2

35........JWBS18-235.................... Cord Plate......................................... ...............................................1

36........JWBS18-236.................... Screw................................................3/16 x 1/2................................2

37........JWBS18-237.................... Strain Relief Bushing......................... ...............................................2

38........JWBS18-238.................... Screw................................................3/16 x 1-1/2.............................2

39........TS-0680011..................... Flat Washer.......................................3/16.........................................2

40........JWBS18-240.................... Brush................................................. ...............................................1

41........JWBS18-241.................... Lock Washer.....................................3/16.........................................2

42........JWBS18-242.................... Hex Nut............................................. 3/16.........................................2

43........JWBS20-243.................... Motor Cord........................................1Ph.........................................1

44........JWBS20-244.................... Power Cord.......................................1Ph.........................................1

45........JWBS20-81...................... Brake Band ....................................... ...............................................1

46........JWBS20-93...................... Brake Belt ......................................... ...............................................1

47........TS-0561011..................... Hex Nut.............................................1/4-20 ...................................11

48........JWBS20-248.................... Hex Nut............................................. M4 ..........................................2

49........TS-0060111..................... Hex Cap Bolt.....................................3/8-16 x 2-1/2..........................1

50........JWBS20-88...................... Brake Switch..................................... ...............................................1

19

Index Part
No. No. Description Size Qty.

51........JWBS20-84...................... Spring................................................ ...............................................1

52........JWBS24-81A................... Plate.................................................. ...............................................2

53........JWBS20-82...................... Brake Locking Bracket....................... ...............................................2

54........JWBS20-254.................... Brake Pedal....................................... ...............................................1

55........TS-0207061..................... Socket Head Cap Screw....................1/4-20 x 1................................1

56........TS-0561031..................... Hex Nut.............................................3/8-16 .....................................1

57........JWBS20-257.................... Hex Cap Bolt..................................... 3/8 x 1-3/4...............................1

58........JWBS20-258.................... Spindle Pulley ................................... ...............................................1

59........TS-0050021..................... Hex Cap Bolt.....................................1/4-20 x 5/8.............................2

60........JWBS20-260.................... Screw................................................3/16 x 1/2................................4

61........JWBS20-261.................... Washer..............................................3/16.........................................4

62........JWBS20-262.................... Hex Nut............................................. 3/16.........................................6

63........TS-0561031..................... Hex Nut.............................................3/8 ..........................................2

20

Blade Guides Assembly

21

Blade Guides Assembly

Index Part
No. No. Description Size Qty.

1.......... TS-0051051 ..................... Hex Cap Bolt.....................................5/16-18 x 1..............................4

2.......... TS-0720081 ..................... Lock Washer.....................................5/16.........................................4

3.......... TS-0680031 ..................... Flat Washer.......................................5/16.........................................8

4.......... JWBS20-304....................Guide Bar Bracket............................. ...............................................1

5.......... JWBS18-305 ................... Worm................................................ ...............................................1

6.......... JWBS18-306....................E-Ring...............................................E-8..........................................2

7.......... JWBS18-307....................Gear Base......................................... ...............................................1

8.......... JWBS18-308....................Bushing............................................. ...............................................1

9.......... JWBS18-309....................C-Ring...............................................S-12........................................2

10........JWBS18-310.................... Shaft ................................................. ...............................................1

11........JWBS18-311.................... Gear.................................................. ...............................................1

12........TS-0208071..................... Socket Head Cap Screw....................5/16-18 x 1-1/4........................2

13........JWBS20-313.................... Lock Knob.........................................5/16.........................................1

14........JWBS20-314.................... Plate.................................................. ...............................................1

15........TS-0051011..................... Hex Cap Bolt.....................................5/16-18 x 1/2...........................4

16........JWBS20-316.................... Guide Bar.......................................... ...............................................1

17........JWBS20-317.................... Pointer............................................... ...............................................1

18........JWBS20-318.................... Inner Blade Guard............................. ...............................................1

19........TS-0050011..................... Hex Cap Bolt.....................................1/4-20 x 1/2.............................1

20........JWBS20-320.................... BladeGuard...................................... ...............................................1

21........TS-0680021..................... Flat Washer.......................................1/4 ..........................................6

22........TS-0720071..................... Lock W asher.....................................1/4 ..........................................4

23........TS-0050021..................... Hex Cap Bolt.....................................1/4-20 x 5/8.............................4

24........JWBS20-324.................... Wing Bolt .......................................... ...............................................2

25........JWBS20-325.................... Bracket Shaft..................................... ...............................................1

26........JWBS20-326.................... C-Ring............................................... .............................................10

27........BB-6202ZZ ...................... Ball Bearing.......................................6202......................................10

28........JWBS20-328.................... Spacer............................................... ...............................................4

29........JWBS20-329.................... Shaft ................................................. ...............................................4

30........TS-0267041..................... Set Screw..........................................1/4-20 x 3/8.............................2

31........JWBS20-2 ....................... Lock Knob......................................... ...............................................1

32........JWBS20-3 ....................... Screw................................................1/4 x 3/4.......................... ........1

33........JWBS18-333.................... Hand W heel ...................................... ...............................................1

34........TS-0267041..................... Set Screw..........................................1/4-20 x 3/8.............................1

35........JWBS18-335.................... Handle............................................... ...............................................1

36........JWBS20-336.................... Cutting Height Scale.......................... ...............................................1

37........JWBS20-337.................... Bracket.............................................. ...............................................1

38........JWBS20-338.................... Base.................................................. ...............................................1

39........JWBS20-339.................... Threaded Lock Bushing..................... ...............................................1

40........JWBS20-340.................... Bolt.................................................... ...............................................1

41........JWBS20-341.................... Lock Knob......................................... ...............................................1

42........JWBS20-342.................... Screw................................................ ...............................................2

43........JWBS18-343.................... Lower Blade Guard............................ ...............................................1

44........JWBS20-344.................... Guide Bar Bracket............................. ...............................................1

45........JWBS20-345.................... Set Screw..........................................5/16 x 3/8 ............................. ...2

46........TS-0720111..................... Lock W asher.....................................1/2 ..........................................1

47........TS-0561051..................... Hex Nut.............................................1/2 ..........................................1

48........JWBS20-348.................... Set Screw..........................................M4 x 4 .....................................8

49........JWBS20-349.................... Thumb Screw.................................... ...............................................4

50........TS-0207031..................... Socket Head Cap Screw....................1/4-20 x 5/8.............................3

51........TS-0207021..................... Socket Head Cap Screw....................1/4-20 x 1/2.............................2

52........JWBS20-352.................... Bracket.............................................. ...............................................1

53........JWBS20-353.................... Thumb Screw....................................1/4 x 1/2 ..................................2

54........JWBS20-354.................... Bearing Support ................................ ...............................................2

55........JWBS20-355.................... Lock Bushing..................................... ...............................................1

22

Index Part
No. No. Description Size Qty.

56........TS-0720071..................... Lock Washer.....................................1/4 ..........................................1

57........JWBS20-357.................... Hex Socket CapScrew......................3/16 x 3/8................................2

58........JWBS20-358.................... Bearing Bracket................................. ...............................................1

59........TS-0207031..................... Socket Head Cap Screw....................1/4-20 x 5/8.............................2

60........JWBS20-360.................... Bracket.............................................. ...............................................1

23

Table Assembly

24

Table Assembly

Index Part
No. No. Description Size Qty.

1.......... JWBS18-401....................Locking Handle.................................. ...............................................1

2.......... TS-0680021 ..................... Flat Washer.......................................1/4 ........................................11

3.......... JWBS18-403....................Miter Gauge Body ............................. ...............................................1

4.......... JWBS20-156....................Guide Disc......................................... ...............................................1

5.......... JWBS18-405....................Pan Head Screw................................M6 x 8.....................................1

6.......... JWBS18-406....................Pointer............................................... ...............................................1

7.......... JWBS18-407....................Guide Bar.......................................... .................................... ...........1

8.......... JWBS18-408N................. Trunnion Support Bracket.................. ...............................................1

9.......... TS-0051071 ..................... Hex Cap Bolt.....................................5/16-18 x 1-1/2........................4

10........TS-0720081..................... Lock W asher.....................................5/16.........................................8

11........TS-0270061..................... Set Screw..........................................5/16-18 x 5/8...........................2

12........TS-0060111..................... Hex Cap Bolt.....................................3/8-16 x 2-1/2..........................1

13........TS-0561031..................... Hex Nut.............................................3/8 ..........................................1

14........TS-0720091..................... Lock W asher.....................................3/8 ..........................................1

15........JWBS18-415.................... Lock Knob......................................... ...............................................2

16........JWBS18-416.................... Trunnion............................................ ...............................................2

17........JWBS18-417.................... Trunnion Clamp Shoe........................ ...............................................2

18........TS-1491081..................... Hex Cap Bolt.....................................M10 x 50.................................2

19........TS-0207011..................... Socket Head Cap Screw....................M6 x 12...................................6

20........JWBS18-420.................... Scale................................................. ...............................................1

21........JWBS20-421.................... Table................................................. ...............................................1

22........JWBS18-422W ................ Front Rail .......................................... ...............................................1

23........TS-0050021..................... Hex Cap Bolt.....................................1/4-20 x 5/8.............................9

24........TS-0720071..................... Lock W asher.....................................1/4 ........................................10

25........JWBS18-425.................... Scale................................................. ...............................................1

26........JWBS20-426.................... Guide Rail ......................................... ...............................................1

27........JWBS18-427W ................ Rear Rail........................................... ...............................................1

28........JWBS20-144.................... Table Insert....................................... ...............................................1

29........JWBS20-145.................... Roll Pin .............................................3 x 10 ......................................1

30........JWBS18-430.................... Fence Body....................................... ...............................................1

31........JWBS18-431.................... Handle............................................... ...............................................1

32........JWBS18-432.................... Cam.................................................. ...............................................1

33........JWBS18-433W ................ Lock Plate......................................... ...............................................1

34........JWBS18-434.................... Pad................................................... ...............................................5

35........JWBS18-435.................... Pin..................................................... ...............................................1

36........JWBS18-436.................... Pin..................................................... ...............................................1

37........JWBS20-437.................... Fence................................................ ...............................................1

38........TS-0081031..................... Hex Cap Bolt.....................................5/16 x 3/4................................4

39........JWBS18-439.................... Flat Washer.......................................5/16.........................................4

40........JWBS18-440.................... Screw................................................3/16 x 1/4................................2

41........JWBS18-441.................... Star Washer......................................3/16.........................................1

42........JWBS18-442.................... Pointer............................................... ...............................................1

43........TS-0561011..................... Hex Nut.............................................1/4 ..........................................2

44........JWBS18-444.................... Sliding Pad........................................ ..................................... ..........1

45........JWBS18-445.................... Rear Hook......................................... ...............................................1

46........JWBS18-446.................... Pointer............................................... ...............................................1

47........JWBS18-447.................... Screw................................................M5 x 8.....................................1

48........JWBS18-448.................... Table Pin........................................... ...............................................1

49........JWBS20-449.................... Resaw Guide..................................... ...............................................1

50........JWBS20-450.................... Lock Knob......................................... ...............................................1

............ JWBS18-MGCP............... Miter Gauge Assembly ...................... ...............................................1

............ JWBS20-FCPW............... Fence Assembly................................ ...............................................1

25

Electrical Schematic - 230V, 1 Ph

26