Jet JJ-8CS User manual

OWNER’S MANUAL
JJ-8CS Woodworking Jointer
JET EQUIPMENT & TOOLS, INC. P.O. BOX 1349 Phone:[phone]
A WMH Company Auburn, WA 98071-1349 Fax: [phone]
www.jettools.com e-mail [email protected] M-708458 06/01

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Warranty & Service
TheJETGroupwarrantseveryproductitsells. Ifoneofourtoolsneedsserviceorrepair,oneofourAuthorized
RepairStations 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
obtainingparts,orperformroutinemaintenanceandmajorrepaironyourJET,PerformaxorPowermatictools.
ForthenameofanAuthorizedRepairStationinyourarea,pleasecall1-800-274-6848.
More Information
Remember, the JET Group is consistently adding new products to the line. For complete, up-to-date product
information,checkwithyourlocalJETGroupdistributor.
JET Group Warranty
TheJET Group (including Performax and Powermatic brands) makes every efforttoassurethat its products
meethigh quality and durability standards and warrants to the original retail consumer/purchaser of our
productsthateachproduct be free from defects in materials and workmanship as follow: 1 YEAR LIMITED
WARRANTYONALLPRODUCTSUNLESS SPECIFIED OTHERWISE. ThisWarrantydoes not apply to
defectsdue 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.
THEJETGROUPLIMITSALLIMPLIED WARRANTIESTOTHEPERIOD SPECIFIEDABOVE, FROMTHE
DATETHEPRODUCTWASPURCHASEDATRETAIL.EXCEPTASSTATEDHEREIN,ANYIMPLIEDWAR-
RANTIESORMERCHANTIBILITYANDFITNESSAREEXCLUDED.SOMESTATESDONOT
ALLOWLIMITATIONS ONHOWLONGTHE IMPLIED WARRANTYLASTS, SOTHEABOVE LIMITATION
MAYNOTAPPLYTOYOU.THE JET GROUPSHALLIN NO EVENTBE LIABLE FOR DEATH, INJURIESTO
PERSONSORPROPERTY,ORFORINCIDENTAL, CONTINGENT,SPECIAL, ORCONSEQUENTIALDAM-
AGESARISINGFROMTHEUSEOF OUR PRODUCTS.SOMESTATES DONOTALLOWTHEEXCLUSION
ORLIMITATIONOF INCIDENTALOR CONSEQUENTIALDAMAGES, SOTHEABOVELIMITATIONOR
EXCLUSIONMAYNOTAPPLYTOYOU.
To takeadvantageof this warranty, the product orpartmustbereturned for examination, postageprepaid, to
anAuthorized RepairStationdesignated by our office. Proofof purchase date and an explanation of the
complaint must accompany the merchandise. If our inspection discloses a defect, we will either repair or
replacethe product, or refund the purchase price if we cannot readily and quickly provide a repair or replace-
ment, 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.
TheJETGroup sells through distributors only. Members of the JETGroup reserve the right to effect at any
time, without prior notice, those alterations to parts, fittings, and accessory equipment which they may deem
necessaryfor anyreasonwhatsoever.
This manual has been prepared for the owner and operators of a JET JJ-8CS. 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 operat-
ing or servicing the machine. To obtain maximum life and efficiency from your jointer, and to aid in
using the machine safely, read this manual thoroughly and follow all instructions carefully.

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WARNING
Wear eye protection.
Always keep cutterhead and drive guards in place and in proper operating condition. Do not
remove guard for rabbeting operations.
Never make a jointing, planing, or rabbeting cut deeper than 1/8”.
Always use hold-down/push blocks for jointing material narrower than 3”, or planing material
thinner than 3”.
Never perform jointing, planing, or rabbeting cuts (with jointers provided with a rabbeting guard) on
pieces shorter than 8” (203mm) in length.
•Keep guards in place and in working order.
•Remove adjusting keys and wrenches. Form a habit of checking to see that keys and adjusting
wrenches are removed from the machine before turning it on.
•Keep the work area clean. Cluttered areas and benches invite accidents.
•Don’t use 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 children away. All visitors should be kept a safe distance from the work area.
•Make the workshop kidproof with padlocks, master switches, or by removing starter keys.
•Don’t force the machine. It will do the job better and safer at the rate for which it was designed.
•Use the right tool. Don’t force a machine or attachment to do a job for which it was not designed.
•Use the proper extension 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 machine will draw. An
undersized cord will cause a drop in the line voltage resulting in power loss and overheating. The
following table shows the correct size to use depending on the cord length and nameplate ampere
rating. If in doubt, use the next heavier gauge. Remember, the smaller the gauge number, the heavier
the cord.
Volts Total Length of Cord in Feet
120V 25 50 100 150
240V 50 100 200 300
AWG
14 12 Not Recommended
•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 cover-
ing to contain long hair.
•Always use safety glasses. Also use a face or dust mask if the cutting operation is dusty. Everyday
eyeglasses only have impact resistant lenses; they are not safety glasses.
•Secure work. Use clamps or a vise to hold the work when practical. It’s safer than using your hands
and it frees both hands to operate the tool.

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•Don’toverreach. Keep proper footing and balance at all times.
•Maintain tools with care. Keep tools sharp and clean for best and safest performance. Follow instruc-
tions for lubricating and changing accessories.
•Always disconnect the machine from the power source before servicing.
•Reduce the risk of unintentional starting. Make sure the switch is in the off position before plugging in.
•Use recommended accessories. Consult the operator’s manual for recommended accessories. The
use of improper accessories may cause risk of injury to persons.
•Never stand on a machine. Serious injury could occur if the machine is tipped or if the blade is uninten-
tionally contacted.
•Checkdamaged parts. Before further use of the machine, a guard or other part that is damaged should be
carefullychecked to determine that it will operate properly and perform its intended function - check for
alignmentof moving parts, binding of moving parts, breakage of parts,mounting,andany other conditions
that may affect its operation. Aguard or other part that is damaged should be properly repaired or re-
placed.
•Direction of feed. Feed work into the blade against the direction of rotation of the blade only.
•Never leave the machine running unattended. Turn power off. Don’t leave the machine until it comes to
a complete stop.
•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
chemicalsare:
* Lead from lead-based paint.
* Crystalline silica from bricks and cement and other masonry products.
* Arsenic and chromium from chemically-treated lumber.
Your risk from these exposures varies, depending on how often you do this type of work. To reduce your
exposureto these chemicals, work in a well-ventilated area, and work with approvedsafetyequipment,
such as those dust masks that are specifically designed to filter out microscopic particles.

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Table of Contents
Warranty.........................................................................................................................................................2
Warnings .................................................................................................................................................... 3-4
Table of Contents ...........................................................................................................................................5
Introduction.....................................................................................................................................................5
Levers and Controls .......................................................................................................................................6
Specifications .................................................................................................................................................6
Contents of Shipping Cartons.........................................................................................................................7
Tools Required for Assembly ..........................................................................................................................7
Unpacking and Cleanup .................................................................................................................................7
Installing Bed to Stand....................................................................................................................................8
InstallingHandwheels.....................................................................................................................................8
Assembling Knife-Setting Gauge....................................................................................................................9
90oFenceAdjustment .....................................................................................................................................9
45oFenceAdjustment ...................................................................................................................................10
LevelingOutfeedTablewithCutterhead Knives ..............................................................................................10
Installing V-Belts ...........................................................................................................................................12
InstallingCutterheadGuard ...........................................................................................................................12
InstallingAccess Cover .................................................................................................................................13
InstallingDust Chute .....................................................................................................................................13
ElectricalConnections ..................................................................................................................................13
Operation ......................................................................................................................................................14
JointingWarped Material...............................................................................................................................15
Directionof Grain ..........................................................................................................................................15
BevelCut ......................................................................................................................................................15
TaperCut ......................................................................................................................................................16
RabbetCut....................................................................................................................................................16
Removingand ReplacingKnives ....................................................................................................................16
GibAdjustment .............................................................................................................................................17
Lubrication ....................................................................................................................................................17
BladeCare ....................................................................................................................................................17
SharpeningtheKnives...................................................................................................................................18
CutterheadRemoval ......................................................................................................................................18
Troubleshooting.............................................................................................................................................19
FenceAssembly Breakdown & Parts List ................................................................................................ 20-21
BedAssembly Breakdown & Parts List.................................................................................................... 22-23
Stand and MotorAssembly Breakdown & Parts List................................................................................. 24-25
CutterheadAssembly ............................................................................................................................... 26-27
WiringDiagram .............................................................................................................................................28
Introduction
The JET JJ-8CS woodworking jointer you have purchased is a high quality machine tool that will give you
years of superior service. You will get maximum performance and enjoyment from your new jointer if you will
take a few moments now to review the entire manual before beginning assembly and operation. Become
familiar with the details of operation and be sure to review the controls page to start to become familiar with
some of the unique words associated with a jointer.
The JET JJ-8CS jointer, as well as all JET products, are backed by a nationwide network of authorized
distributors and/or service centers. Please contact your nearest distributor should you require parts or
service. Partsare also available directly from JET bycalling1-800-274-6848.
Now that you have purchased a jointer, it is a good time to consider a dust collection system. See your local
JET distributor for the complete line of dust collectors and the full line of JET Dust Collector Hoses and
Accessories. Customize your installation and obtain maximum performance with JET’s dust hoods, hoses,
clamps, fittings, and blast gates.

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Levers and Controls
1. Handwheel for Outfeed Table 8. On/Off Switch
2. Outfeed Table 9. Rabbeting Ledge
3. Fence 10. Table Lock Knob
4. Fence Adjustment Handle 11. Fence Tilt Lock Handle
5. Cutter Guard 12. Fence Control Handle
6. Infeed Table 13. Belt Guard
7. Handwheel for Infeed Table 14. Dust Chute
Specifications: JJ-8CS
Stock Number .....................................................................................................................708458K
CuttingCapacity ..........................................................................................................8” W x 1/2” D
CutterheadSpeed............................................................................................................ 5,500RPM
NumberofKnives ............................................................................................................................3
Rabbeting Capacity .....................................................................................................................1/2”
TableSurface .......................................................................................................... 9” W x 66-1/2” L
Fence ..................................................................................................................... 4” W x 38-1/2” L
Blade Size ............................................................................................................. 8” x 11/16” x 1/8”
FenceTiltsRightandLeft ............................................................................................................45o
PositiveStops .......................................................................................................................45o,90o
Motor ............................................................................................................ 2 HP, 1 Ph, 230V Only
NetWeight (approx.) ............................................................................................................ 398 lbs.
ShippingWeight (approx.) .................................................................................................... 470 lbs.
Thespecifications 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,
andaccessory equipment deemed necessaryforanyreason whatsoever.

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Contents of Shipping Cartons
Note: unit shipped in two cartons.
Stand Carton
1. Stand withMotor
1. StandDoor
1. DustChute w/MountingHardware
Main Unit Carton
1. BedAssembly w/ Fence
1. CutterGuard
3. MountingBolts
3. 3/8" Lock Washers
1. BeltGuard
3. Hex Wrenches (3, 4 & 5mm)
2. Handwheels
2. Handles
2. V-Belts
1. CanofTouch-Up Paint
1. 8/10mmOpen End Wrench
1. 12/14mmOpen End Wrench
1. Owner’sManual
1. KnifeGaugeAssembly
1. WarrantyCard
Tools Required for Assembly
#1Cross Point Screw Driver
6-8"Adjustable Wrench or 17 and 19mm Wrench
Unpacking and Cleanup
1. Carefullyremove allcontents frombothshipping
cartons. Comparecontents of the shipping car-
tonswith the list of contents above. Place parts
onaprotected surface.
2. Report any shipping damage to your local dis-
tributor.
3. Cleanallrustprotectedsurfaces(bed,fence,etc.)
withkerosene or diesel oil. Do notusegasoline,
paint thinner, mineral spirits, etc. These may
damagepainted surfaces.
 CAUTION
Cutterhead blades are extremely sharp!
Use care when cleaning!
4. Applya thin layer of paste waxtothebrightsur-
facesof the fence and tables to prevent rust.
5. Setpacking materialandshipping cartonstothe
side. Donot discard until machine hasbeenset
upand is running properly.

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Installing Bed to Stand
1. Use an assistant or hoist mechanism to place
bed assembly on top of stand. Be sure identi-
fication label on the bed faces the same direc-
tion as the label on the stand (Fig. 1).
2. Line up two holes in top of stand with holes in
bedassembly by viewing through access door
in stand.
3. Attach bed assembly to stand with two 3/8"
lock bolts and lock washers (Fig. 2). Hand
tighten only at this time.
4. Line up third hole in stand with hole in bed as-
semblybyviewingthroughdustchute.
5. Install third 3/8" lock bolt and lock washer
through dust chute to secure bed to stand.
6. Tighten all three mounting bolts with 14mm
wrench.
Installing Handwheels
1. Removeprotectivetapefromshaft,andremove
screwand washer.
2. Press handwheel (A, Fig. 3) onto shaft, align-
ingthe key way with the key. If necessary, use
a hammer with a block of wood to tap the
handwheelcompletely onto the shaft.
3. Re-install screw and washer (B, Fig. 3).
4. Mounthandle (C, Fig. 3) onto handwheel.
Fig. 1
Fig. 2
Fig. 3

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Assembling Knife-Setting Gauge
1. Place the two bases (A, Fig. 4) onto each end
ofthe bar (B, Fig. 4). Snap the four E-rings (C,
Fig. 4) into the grooves on the bar as shown.
90°Fence Adjustment
Note:whenevermaking anadjustmenttothefence,
lift the fence up slightly after releasing the lock
handleto avoid scratching the table.
1. Set infeed table to the same height as the
outfeedtable.
2. Move the fence by releasing lock handle (A,
Fig. 5) and pushing the fence assembly until it
overlapsthe tables.
3. Adjust the fence to a 90°angle by releasing
lockhandle (B, Fig.5), pulling up onhandle (C,
Fig. 5), and re-tightening lock handle (B, Fig.
5).
4. Placeacombinationsquareon theinfeedtable.
(Fig.6)
5. If fence is not square to table, release lock
handle (B, Fig. 5), loosen nut (D, Fig. 5), and
turnbolt(E, Fig.5) untilfence issquare totable.
6. Tighten nut (D, Fig. 5) to retain the setting.
Tighten lock handle (B, Fig. 5).
Fig. 4
Fig. 5
Fig. 6

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45°Fence Adjustment
Note:Whenevermakinganadjustmenttothefence,
lift the fence up slightly after releasing the lock
handleto avoid scratching the table.
1. Loosen lock handle (A, Fig. 7). Move the stop
plate(B, Fig. 7) out of the way and position the
fence at the 45°angle. Make sure the fence
sits against the stop bolt (C, Fig. 7).
2. Place a combination square (D, Fig. 7) on the
fence and table to confirm a 45°setting.
3. To adjust, loosen lock nut (E, Fig. 7), turn bolt
(C, Fig. 7) until a 45°angle is obtained, and
tightenlock nut (E,Fig. 7). Tighten lock handle
(A, Fig. 7).
Leveling Outfeed Table with Cutterhead
Knives
WARNING
Machine should be disconnected from
power source at this time!
Cutterhead blades are extremely sharp!
Use caution when hands are near the
cutterhead!
Failure to comply may cause serious injury!
For most jointing operations, the surface of the
outfeedtable must be levelwiththeknife tips of the
cutterheadattheirhighestpointofrevolution. The
knifetips must project equally from the cutterhead.
The outfeed table and cutterhead are adjusted at
thefactory and should not require adjustment.
1. Carefully number each blade with a magic
markertomakethemeasiertodifferentiate.
2. Rotatethe cutterheadby turningthe cutterhead
pulleyand determine the 12 o’clock position of
knife number one. The 12 o’clock position is
the highest point a blade will reach in the cut-
ting arc.
3. Loosen table lock screw (A, Fig. 8) and raise
theoutfeed table to theheightof blade number
oneby turninghandwheel(B, Fig. 8). Counter-
clockwisewill cause the outfeed table to raise.
Clockwisewill causetheoutfeedtableto lower.
Set a straight edge (C, Fig. 8) on the outfeed
table and across the cutterhead.
Fig. 7
Fig. 8
Fig. 9
4. Positionof the table and straight edge should look
like figure 9. Use care when handling the straight
edge near the blades so as not to damage them.