Jet JJP-8BT Service manual

Operating Instructions and Parts Manual
8-inch Jointer-Planer
Model JJP-8BT
JET
427 New Sanford Road
LaVergne, Tennessee 37086 Part No. M-707400
Ph.: 800-274-6848 Revision B 08/2014
www.jettools.com Copyright © 2014 JET

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1.0 Warranty and Service
JET warrants every product it sells 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 branded website.
•JET 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 Covered
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. JET woodworking machinery is designed to be used with Wood.
Use of these machines in the processing of metal, plastics, or other materials may void the warranty. The exceptions
are acrylics and other natural items that are made specifically for wood turning.
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 proof
of initial purchase when calling. If a product requires further inspection, the Technical Service representative will
explain and assist with any additional action needed. JET has 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 the Service
Center Locator on the JET website.
More Information
JET is constantly adding new products. For complete, up-to-date product information, check with your local distributor
or visit the JET website.
How State Law Applies
This warranty gives you specific legal rights, subject to applicable state law.
Limitations on This Warranty
JET LIMITS 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 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 sells through distributors only. The specifications listed in JET printed materials and on official JET website are
given as general information and are not binding. JET reserves 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. JET®branded products are not sold in Canada by JPW Industries, Inc.
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; Woodworking Machinery used
for industrial or commercial purposes
5 Year – Woodworking Machinery
Limited Lifetime – JET Parallel clamps; VOLT Series Electric Hoists; Manual Hoists; Manual Hoist
Accessories; Shop Tools; Warehouse & Dock products; Hand Tools
NOTE: JET is a division of JPW Industries, Inc. References in this document to JET also apply to JPW Industries,
Inc., or any of its successors in interest to the JET brand.

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2.0 Table of contents
Section Page
1.0 Warranty and Service.....................................................................................................................................2
2.0 Table of contents............................................................................................................................................3
3.0 Safety warnings..............................................................................................................................................4
4.0 Features.........................................................................................................................................................6
5.0 Specifications.................................................................................................................................................6
6.0 Setup and assembly.......................................................................................................................................7
6.1 Unpacking and cleanup..............................................................................................................................7
6.2 Contents of main carton .............................................................................................................................7
6.3 Contents of stand .......................................................................................................................................8
7.0 Assembly........................................................................................................................................................9
7.1 Stand assembly (optional)..........................................................................................................................9
7.2 Mounting Jointer-Planer to Stand...............................................................................................................9
7.3 Jointer-Planer assembly...........................................................................................................................10
8.0 Jointer setup.................................................................................................................................................10
9.0 Planer setup.................................................................................................................................................11
10.0 Operating controls......................................................................................................................................11
10.1 Power.....................................................................................................................................................11
10.2 Planer controls and adjustments .............................................................................................................12
10.3 Jointer controls and adjustments .............................................................................................................12
11.0 Adjustments ...............................................................................................................................................13
11.1 Cutterhead Knife Adjustment .................................................................................................................13
11.2 Replacing Cutter Knives.........................................................................................................................14
11.3 Jointer Fence Adjustment.......................................................................................................................14
11.4 Belt replacement ....................................................................................................................................14
12.0 Basic Operations........................................................................................................................................15
12.1 Dust collection........................................................................................................................................15
12.2 Initial startup...........................................................................................................................................15
12.3 Changing mode of operation..................................................................................................................15
12.4 Jointer operations...................................................................................................................................16
12.5 Planer operations ...................................................................................................................................17
13.0 Maintenance...............................................................................................................................................19
13.1 Blade Care .............................................................................................................................................19
13.2 Sharpening the Knives ...........................................................................................................................19
14.0 Lubrication..................................................................................................................................................19
15.0 Optional Accessories .................................................................................................................................19
16.0 Troubleshooting the JJP-8BT.....................................................................................................................20
16.1 Performance Troubleshooting – Jointer.................................................................................................20
16.2 Performance Troubleshooting – Planer..................................................................................................21
16.3 Mechanical Troubleshooting – Planer/Jointer ........................................................................................22
17.0 Replacement Parts.....................................................................................................................................22
17.1.1 Jointer/Planer – Parts List ...................................................................................................................23
17.1.2 Assembly Drawing Index.....................................................................................................................27
17.1.3 Planer Table Assembly .......................................................................................................................28
17.1.4 Motor Assembly...................................................................................................................................29
17.1.5 Front Frame Assembly........................................................................................................................29
17.1.6 Chain Drive Assembly.........................................................................................................................30
17.1.7 Front Cover Assembly.........................................................................................................................30
17.1.8 Cutterhead Guard Assembly...............................................................................................................31
17.1.9 Dust Cover Assembly..........................................................................................................................31
17.1.10 Jointer Infeed Table Assembly..........................................................................................................32
17.1.11 Jointer Outfeed Table Assembly.......................................................................................................32
17.1.12 Cutterhead/Feed Roller Assembly ....................................................................................................33
17.1.13 Jointer Fence Assembly....................................................................................................................33
17.1.14 Rear Frame and Cover Assembly.....................................................................................................34
17.2.1 Jointer/Planer Stand – Parts List.........................................................................................................35
17.2.2 Jointer/Planer Stand – Exploded View................................................................................................35
18.0 Electrical Connections – JJP-8BT..............................................................................................................36

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3.0 Safety warnings
1. Read and understand the entire owner's manual before attempting assembly or operation.
2. Read and understand the warnings posted on the machine and in this manual. Failure to comply with all of
these warnings may cause serious injury.
3. Replace the warning labels if they become obscured or removed.
4. This Woodworking Jointer-planer 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 woodworking jointer or
planer, do not use until proper training and knowledge have been obtained.
5. Do not use this for other than its intended use. If used for other purposes, JET disclaims any real or implied
warranty and holds itself harmless from any injury that may result from that use.
6. Always wear approved safety glasses/face shields while using this woodworking jointer-planer. Everyday
eyeglasses only have impact resistant lenses; they are not safety glasses.
7. Before operating this woodworking jointer-planer, remove tie, rings, watches and other jewelry, and roll
sleeves up past the elbows. Remove all loose clothing and confine long hair. Non-slip footwear or anti-skid
floor strips are recommended. Do not wear gloves.
8. Wear ear protectors (plugs or muffs) during extended periods of operation.
9. Some dust created by power sanding, sawing, grinding, drilling and other construction activities contain
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, cement 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.
10. Do not operate this machine while tired or under the influence of drugs, alcohol or any medication.
11. Make certain the switch is in the OFF position before connecting the machine to the power source.
12. Make certain the machine is properly grounded.
13. Make all machine adjustments or maintenance with the machine unplugged from the power source.
14. 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.
15. Keep safety 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.
16. Make sure the woodworking jointer-planer is firmly secured to the floor or bench before use.
17. Check damaged parts. Before further use of the machine, 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.
18. Provide for adequate space surrounding work area and non-glare, overhead lighting.
19. Keep the floor around the machine clean and free of scrap material, oil and grease.
20. Keep visitors a safe distance from the work area. Keep children away.
21. Make your workshop child proof with padlocks, master switches or by removing starter keys.

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22. Give your work undivided attention. Looking around, carrying on a conversation and “horse-play” are
careless acts that can result in serious injury.
23. Maintain a balanced stance at all times so that you do not fall or lean against the cutterhead or other
moving parts. Do not overreach or use excessive force to perform any machine operation.
24. Use the right tool at the correct speed and feed rate. Do not force a tool or attachment to do a job for which
it was not designed. The right tool will do the job better and safer.
25. Use recommended accessories; improper accessories may be hazardous.
26. Maintain tools with care. Keep knives sharp and clean for the best and safest performance. Follow
instructions for lubricating and changing accessories.
27. Turn off the machine before cleaning. Use a brush or compressed air to remove chips or debris — do not
use your hands.
28. Do not stand on the machine. Serious injury could occur if the machine tips over.
29. Never leave the machine running unattended. Turn the power off and do not leave the machine until it
comes to a complete stop.
30. Before turning on machine, remove all extra equipment such as keys, wrenches, scrap, stock, and cleaning
rags away from the machine.
31. Always use a hold-down or push block when surfacing stock less than 12" inches long, or 3 inches wide, or
3 inches thick.
32. Do not perform jointing operations on material shorter than 8", narrower than 3/4" or less than 1/4" thick.
33. The hands must never be closer than 3 inches to
the cutterhead (see Figure).
34. Never apply pressure to stock directly over the
cutterhead. This may result in the stock tipping into
the cutterhead along with the operator's fingers.
Position hands away from extreme ends of stock,
and push through with a smooth, even motion.
Never back workpiece toward the infeed table.
35. To avoid kickback, the grain must run in the same
direction you are cutting. Before attempting to joint,
or plane, each work piece must be carefully
examined for stock condition and grain orientation.
36. When working with a swirl grain wood or burls,
making it necessary to plane against the grain, use a lesser depth of cut and a slow rate of feed.
37. Move the hands in an alternate motion from back to front as the work continues through the cut. Never
pass the hands directly over the cutter knife. As one hand approaches the knives remove it from the stock
in an arc motion and place it back on the stock in a position beyond the cutter knife (Fig. 2).
38. At all times hold the stock firmly.
39. Do not use this for other than it intended use. If used for other purposes, JET disclaims any real or implied
warranty and holds itself harmless for any injury or damage which may result from that use.
Familiarize yourself with the following safety notices used in this manual:
This means that if precautions are not heeded, it may result in minor injury and/or possible
machine damage.
This means that if precautions are not heeded, it may result in serious, or possibly even fatal,
injury.
- - SAVE THESE INSTRUCTIONS - -

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Read and understand the entire contents of this manual before attempting assembly
or operation! Failure to comply may cause serious injury!
4.0 Features
Features
5.0 Specifications
Model number...........................................................................................................................................JJP-8BT
Stock number..............................................................................................................................................707400
Cutterhead speed......................................................................................................................................9000rpm
Number of knives ..................................................................................................................................................2
Cutter knife length..........................................................................................................................................8-1/4"
Cutter knife thickness....................................................................................................................................0.060"
Dust port diameter.................................................................................................................................2-1/2" or 4”
Jointer table............................................................................................................................................29"x 8-1/4”
Max stock removal ............................................................................................................................................1/8”
Max cutting width .................................................................................................................................................8"
Fence ....................................................................................................................................................4-1/8" x 21”
Fence tilt................................................................................................................................................. 90°- 45° R
Fence positive stop ..................................................................................................................................90°, 45°R
Planer table.................................................................................................................................... 10-5/8" x 8-1/2"
Planer capacity
Maximum cutting thickness.........................................................................................................................4-1/2"
Max depth of cut..............................................................................................................................................5/64”
Min length of work piece ......................................................................................................................................6"
Feed rate...................................................................................................................................................19.5 fpm
Motor
Voltage......................................................................................................................................120V, 60Hz, 13A
Switch......................................................................................................Toggle switch with overload protection
Overall Dimensions (LxWxH).............................................................................................. 31" x 16-1/2" x 18-1/2"
Net weight........................................................................................................................................58 lbs
The specifications in this manual were current at time of publication, 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.

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6.0 Setup and assembly
6.1 Unpacking and cleanup
Remove all contents from the shipping carton. Do
not discard the carton or packing material until your
Model JJP-8BT Jointer-Planer is assembled and is
running satisfactorily.
Compare the contents of the carton against the list
of parts in Contents of Shipping Container (below).
The letter identification in the list corresponds to
the items shown at right. This is your key for
identifying the parts used throughout the Assembly
section for easy reference.
Remove the protective coating that is applied to the
table with a household grease and spot remover.
6.2 Contents of main carton
01 Jointer Fence – A
01 Dust Chute – B
01 Cutterhead Guard – C
01 Jointer-Planer – D
01 2-1/2" to 4" Hose Adapter – E
01 Planer Outfeed Table Extension – F
01 Owner's Manual – G
02 Push Blocks – H
01 Warranty Card (not shown)
Figure 1 – Contents of the Main Carton
Knobs and Handles
01 Lock Knob (p/n JJP8BT-90L) – J
01 Lock Knob (p/n JJP8BT-90S) – K
01 Elevating Handle (p/n JJP8BT-19A) – L
01 Flat Washer, 6mm – M
01 Lock Handle (p/n JJP8BT-25A) – N
Figure 2 – Knobs and Handles
Hardware
02 Pan Head Machine Screw – O
02 Hex Nut – P
02 Socket Head Cap Screw, M6x25 – Q
03 Socket Head Cap Screw, M6x10 – R
05 Lock Washer, 6mm – S
06 Flat Washer, 6mm – T
03 Hex Nut, M6 – U
Figure 3 – Hardware
(included in JJP10BT-HP Hardware Package)
Tools Included
01 Knife Setting Gauge – V
01 3, 5, 6mm hex wrenches (set of 3) – W
01 8/10mm Open-end Wrench – X
Figure 4 – Tools Included

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6.3 Contents of stand
The stand is not included but is an optional item
available for purchase. To purchase, call Customer
Service at the phone number on the cover of this
manual. The following instructions are included if
you have purchased the stand or will purchase one
at a later date.
Compare the contents of the carton against the list
of parts below.
Contents of Stand Carton
02 Long Support Plate – SA
02 Short Support Plate – SB
02 Long Stand Top Support – SC
02 Short Stand Top Support – SD
04 Stand Leg – SE
Stand Hardware
(included in Hardware Package, p/n JJP10BT-HP)
Note: The index number in parentheses refers to
the same item as shown in the parts breakdowns.
04 Hex Cap Screw, M6x20 (#13, Stand Assbly) –
SF
24 Carriage Bolt, M6x12 (#9, Stand Assbly) – SG
28 Flat Washer, 6mm (#8, Stand Assbly) – SH
24 Lock Washer, 6mm (#7, Stand Assbly) – SJ
28 Hex Nut, M6 (#6, Stand Assbly) – SK
04 Socket Head Cap Screw, M8x20 (#16, Stand
Assbly) – SM
04 Flat Washer, M8 (#14, Stand Assbly) – SN
04 Lock Washer, M8 (#15, Stand Assbly) – SP
04 Rubber Foot (#12, Stand Assbly) – SQ
Figure 5 – Contents of Stand Carton
Figure 6 – Stand Hardware
(included in JJP10BT-HP Hardware Package)

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7.0 Assembly
For assembly convenience, the item letter
designators used throughout the Assembly section
are the same as those used to identify shipping
content and hardware components in sect. 6.0.
7.1 Stand assembly (optional)
Note: If you do not plan to use a stand at this time,
skip this page and proceed to sect. 7.3, Jointer-
Planer Assembly.
Refer to Figure 7:
1. Select two legs (SE), one short stand top
support (SD) and one short support plate (SB).
2. Attach one end of the stand top support (SD)
to the top of the first leg with two carriage bolts
(SG), flat washers (SH), lock washers (SJ) and
hex nuts (SK). Attach the other end of the
stand top support (SD) to the second leg in the
same manner. Hand-tighten only at this time.
3. Attach a support plate (SB) to each leg (SE) in
the same manner with two carriage bolts (SG),
flat washers (SH), lock washers (SJ) and hex
nuts (SK). Hand-tighten only at this time.
4. Repeat steps 1–3 using the remaining legs,
short stand top support and support plate.
5. Complete the stand construction by attaching
long stand top supports (SE) and long support
plates (SA) to the leg assemblies constructed
in steps 1–4. Hand-tighten all hardware only at
this time.
6. Place a rubber foot (SQ) on a hex cap screw
(SF), then insert the threaded end of the screw
through the opening on the bottom of the leg.
7. Secure with flat washer (SH) and hex nut (SK).
8. Attach rubber feet to remaining legs in the
same manner.
9. Place stand upright. Ensure that the stand is
on a level surface and all four legs are
contacting the surface.
10. Tighten all hex nuts with the 10mm
wrench (X, Figure 4) provided.
7.2 Mounting Jointer-Planer to Stand
Refer to Figure 8:
1. Place the Jointer-Planer (D) onto the
assembled stand and secure with 4 socket
head cap screws (SM), lock washers (SP), and
flat washers (SN).
2. Tighten all socket head cap screws (SM) with
the 5mm hex wrench (W, Figure 4) provided.
Figure 7
Figure 8
SK
SA
SB
SC
SD
SE
SK
SJSH
SK
SH
SJ
SG
SG
SH
SQ
SF

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7.3 Jointer-Planer assembly
Refer to Figure 9:
Fence
1. Attach jointer fence (A) to back of jointer
outfeed table (D3) with two each socket head
cap screws (Q) and lock washers (S). Tighten
screws with 5mm hex wrench (provided).
Figure 9
Lock Knobs
The JJP-8BT Jointer-Planer comes equipped with
two lock knobs to secure the position of the jointer
infeed table.
2. Install jointer infeed table lock knobs (K, T).
Note: The shaft length of the two lock knobs
(refer to Figure 2) is different. Be sure to install
each in the correct location.
Extension Table
3. Attach the planer outfeed extension table (F)
to the planer table (D5) with three socket head
cap screws (R), six flat washers (T), three lock
washers (S) and three hex nuts (U).
Screws (R) and flat washers T1 are inserted
through the extension table (F) and planer
table (D5), then fastened from inside the planer
table (D5) with flat washers (T2), lock washers
(S) and hex nuts (U).
4. Tighten screws with 5mm hex wrench and
10mm open end wrench.
Extension Table Adjustment
Two setscrews located underneath the extension
table (F) are used to adjust the height position of
the outer (protruding) edge, which must be slightly
higher than the main table (D5) in order to minimize
snipe (see sect.12.5, Avoiding Snipe).
5. Using a 4mm hex wrench (provided), turn
setscrews slightly clockwise to raise the table
or counterclockwise to lower the table.
Lock Handle
Refer to Figure 10:
6. Attach planer table lock handle (N) and flat
washer (M).
Cutterhead Guard
7. Install cutterhead guard (C) by securing the
bracket (C1) to the side of the jointer infeed
table (D5) with two each pan head machine
screws (O) and hex nuts (P).
Important: It is extremely important that spring
action causes the cutterguard (C) to retract
against the fence (A), concealing the cutterhead
(A1). If spring return tension is not enough,
adjust the spring located on the cutterhead pivot
shaft accordingly
Figure 10
8.0 Jointer setup
Disconnect machine from
power source before making any adjustments.
Failure to comply may cause serious injury.
Refer to Figure 11:
1. Loosen lock handle (N).
2. Install planer table height adjustment handle
(L).
3. Turn handle (L) counterclockwise and lower
planer table (D1) all the way.
4. Remove hex nut (B1) and flat washer (B2) from
dust chute (B).
5. Orient the dust chute (B) as shown and install
into the infeed opening.
Position the chute (B) such that the two
positioning keys and one threaded positioning