Operating Instructions and Parts Manual 12-inch Planer/Jointer Models JPJ-12B, JPJ-12BHH JET 427 New Sanford Road La Vergne, Tennessee 37086 Ph.: 800-274-6848 www.jettools.com Part No.
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.
2.0 Table of Contents Section Page 1.0 Warranty and Service ..................................................................................................................................... 2 2.0 Table of Contents ........................................................................................................................................... 3 3.0 Safety Warnings ....................................................................................................................................
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 Planer-Jointer is designed and intended for use by properly trained and experienced personnel only.
26. Make sure the workpiece is securely attached or clamped to the table. Never use your hand to hold the workpiece. 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 the cutterhead comes to a complete stop. 30.
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 injury or possibly even death. 4.0 Specifications Model number ....................................................................... JPJ-12B ................................................ JPJ-12BHH Stock number .......................................
5.0 Features and Terminology Figure 1 6.0 Receiving 9.1 Contents of Shipping Container Carefully unpack the machine and any loose items from the wood case and inspect for damage. Any damage should be reported immediately to your distributor and shipping agent. Before proceeding further, read your manual thoroughly to familiarize yourself with proper assembly, maintenance, and safety procedures.
9.2 Planer to Jointer Setup 9.0 Operating Controls Refer to Figures 2 and 3: Disconnect machine from power source before making any adjustments. Failure to comply may cause serious injury. To change the machine configuration from planer to jointer: 1. Pull the dust chute release knob (F) and reposition the dust chute (D) to the left (G). It should be positioned as shown in D, Fig. 2. Cutterhead knives are dangerously sharp. Use extreme caution when working around them.
.3 Control Switch Refer to Figure 4: Press the green switch to start. Press the red switch to stop. To prevent unauthorized or accidental starting of the machine, remove the safety key from the green switch and store in a safe place. The key must be reinserted to start the machine. Figure 5 Figure 4 Figure 6 9.4 Planer Controls and Adjustments 9.
Important: When the tilted operation is finished and the fence is returned to 90°, make sure to flip the stop plate (I) back to its original position. Figure 7 Cutterhead Guard Refer to Figure 8: Properly positioned, the cutterhead guard (B) should rest against the fence (A). Figure 8 Fence Movement Refer to Figure 8: 10.0 Adjustments The fence (A) can be moved forward (C) or backward (D) across half the width (W) of the table, with 6" travel.
5. If the fence (A) is not square to the table, release the tilt locking handle (G), loosen the lock nut (B), and turn the stop bolt (C) until the fence is square to the table. 10.2 Table and Knife Adjustments 6. Tighten the lock nut (B) to retain the setting. Tighten the tilt locking handle (G). 1. Infeed and outfeed tables must be coplanar. For accurate jointing, at least three things must be true: 2.
3. Slide the fence assembly (B) back (C) as far as it will go, or remove it from the machine entirely (use a 5mm hex wrench to remove the four button head socket screws and then remove the fence assembly). Performing the Coplanar Alignment Refer to Figure 12: If alignment is needed as determined in the previous section, proceed with step 7. A 2.5mm hex wrench and a 22mm open wrench is required. 4. Loosen the outfeed table lock handle (C, Fig. 7) on the outfeed table (A).
It may be necessary to repeat the exercise in this section more than once to achieve coplanar alignment. Important: Before performing any adjustments in this section, the infeed and outfeed tables must be coplanar (see sect. 10.3, Coplanar Alignment). Note: If the tables do not lock properly after the adjustment, see sect. 10.7, Jointer Table Lock Handle Adjustment. Preparation Disconnect machine from power source before making any adjustments. Failure to comply may cause serious injury.
11. Rotate the cutterhead clockwise. If the outfeed table and knives are set correctly, the knife will contact the gauge and move it until the left mark lines up with the edge of the outfeed table, as shown in Figure 15. Figure 13 8. Lock the outfeed table (A) at that height by tightening the outfeed table lock handle (C, Fig. 7). The outfeed table has now been locked at a standard height, level with the arc of the knife.
For best results, knives should be set at approximately .04" above the cutterhead. Knife height should not vary more than .002 - .003" across the length of the cutterhead. All three knives must be set at equal height in the cutterhead and parallel to the outfeed table across their length. 17. After all three knives are positioned properly in the cutterhead and made snug, continue tightening the gib screws (F).
7. Insert the lock bar (G) and tighten just enough to hold it in place. Important: When removing or rotating inserts, clean saw dust from the screw, the insert, and the cutterhead platform. Dust accumulation between these elements can prevent the insert from seating properly, and may affect the quality of the cut. Repeat steps 3 - 7 for the other two knives. The knives must now be adjusted as described in sect. 10.4, Setting Knives at Correct Height and Parallel to Outfeed Table.
Cutterhead Drive Belt Replacement Note: If the cutterhead drive belt (G) is to be replaced, steps 1 - 6 must be performed to remove the feed-roller belt (H) before the cutterhead drive belt can be replaced. 7. Remove cutterhead drive belt (G) from around cutterhead pulley (O) and pulley (J). 8. Loop the new cutterhead drive belt around the larger (inner) motor pulley (J) and cutterhead pulley (O). If the feed-roller belt (H) is to be replaced as well, proceed to step 10. Otherwise, continue. 9.
adjustments. Failure to comply may cause serious injury. 1. Disconnect machine from power source. 2. Loosen the hex nut (B) and rotate the screw (C) as needed to raise or lower that end of the roller. Note: Feed rollers must remain parallel to the table, and about 1/32" below the cutting arc of the knives or knife inserts. 3. Adjust any of the four screw/nut assemblies as needed. 4. Use a gauge on the planer table to verify the height of the rollers in relation to the cutterhead. Figure 21 5.
10.11 Planer Table Adjustment Checking Planer Table Parallel to Cutterhead Refer to Figures 24 and 25: The planer table is set parallel to the cutterhead by the manufacturer and no further adjustment should be needed. If your machine is planing a taper, first check to see if the knives are properly adjusted in the cutterhead (see sect. 10.4, sect. 10.4, Setting Knives at Correct Height and Parallel to Outfeed Table) and make adjustments if necessary.
Hand Placement Never pass hands directly over the cutterhead. At the start of the cut, the left hand holds the workpiece firmly against the infeed table and fence while the right hand pushes the workpiece in a smooth, even motion toward the cutterhead. After the cut is under way, the new surface rests firmly on the outfeed table. The left hand is transferred to the outfeed side (Figure 27) and presses down on this part of the workpiece, at the same time maintaining flat contact with the fence.
Direction of Grain Avoid feeding work into the jointer against the grain (Figure 29). This may result in chipped and splintered edges. To edge: 1. Make sure the fence is set to 90°. Doublecheck it with a square. 2. Inspect stock for soundness and grain direction (refer to Direction of Grain). 3. If the board is bowed (curved), place the concave edge down on the infeed table. 4. Set the infeed table for a cut of approximately 1/16". 5.
Several passes may be required to achieve the full bevel. Precautions A thickness planer is a precision woodworking machine and should be used on good-quality lumber only. Do not plane dirty boards; dirt and small stones are abrasive and will wear out the blade. Remove nails and staples. Use the planer to cut wood only. Avoid knots. Heavily cross-grained wood makes knots hard. Knots can come lose and jam the blade.
Feeding the Work The planer is supplied with planer blades mounted in the cutterhead, and infeed and outfeed rollers adjusted to the correct height. The planer feed is automatic; it will vary slightly depending on the type of wood. Avoiding Snipe Snipe refers to a depression at either end of the board caused by an uneven force on the cutterhead when the work is entering or leaving the planer.
12.2 Sharpening the Knives (Straight Knives Only) 7. Take the same number of passes for all three blades. If the blades have been sharpened and still are not cutting efficiently, trying to touch up the blades further will only cause the formation of a second beveled edge. When this starts to happen, it is time to replace blades with another set. It is recommended to keep a second set of blades on hand so that they may be installed while the first set is being professionally sharpened.
14.0 Troubleshooting the JPJ-12B,JPJ-12BHH 14.1 Performance Troubleshooting – Jointer Trouble Probable Cause Remedy Finished stock is concave on back end. Knife is higher than outfeed table. Align cutterhead knives with outfeed table. See sect. 10.4, sect. 10.4, Setting Knives at Correct Height and Parallel to Outfeed Table. Finished stock is concave on front end. Outfeed table is higher than knife. Align cutterhead knives with outfeed table. See sect. 10.4, sect. 10.
14.2 Performance Troubleshooting – Planer Trouble Probable Cause Remedy Snipe. Table rollers not set properly. Inadequate support of long boards. Adjust rollers to proper height Support long boards with extension rollers. Adjust feed roller tension. Note: Snipe cannot be eliminated, but can be so minimized as to become negligible. Uneven feed roller pressure front to back. Dull knives. Lumber not butted properly. Fuzzy Grain. Planing wood with high moisture content. Dull knives. Torn Grain.
14.3 Mechanical Troubleshooting – Planer/Jointer Trouble Probable Cause Remedy Chain jumping. Inadequate tension. Sprockets misaligned. Sprockets worn. No incoming power. Overload automatic reset has not reset. Planer frequently trips. Adjust chain tension. Machine will not start/ restart or repeatedly trips circuit breaker or blows fuses. Building circuit breaker trips or fuse blows. Loose electrical connections. Motor starter failure. Switch or Motor failure – how to distinguish. Motor failure.
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15.2 Infeed Table Assembly – Parts List Index No. Part No. Description Size Qty 1 ............... JPJ12B-101 ............. Fixed Jointer Table Hinge .................................... .................................... 1 2 ............... JPJ12B-102 ............. Socket Head Cap Screw w/threadlocker ............. M8 x 1.25P x 35L ........ 2 3 ............... JPJ12B-103 ............. Torsion Spring ...................................................... .................................... 1 4 .......
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15.4 Outfeed Table Assembly – Parts List Index No. Part No. Description Size Qty 1 ............... TS-1504051 ............. Socket Head Cap Screw ...................................... M8 x 1.25P x 25L ........ 4 2 ............... TS-2361081 ............. Lock Washer ........................................................ M8 ............................... 4 3 ............... JPJ12B-102 ............. Socket Head Cap Screw w/threadlocker ............. M8 x 1.25P x 35L ........ 2 4 ...............
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15.6 Cutterhead Assembly – Parts List Index No. Part No. Description Size Qty 1 ............... JPJ12B-301 ............. External Retaining Ring, E-Type.......................... ETW-12 ....................... 2 2 ............... JPJ12B-302 ............. Spacer .................................................................. .................................. 34 3 ............... JPJ12B-303 ............. Anti-Kickback Pawl .............................................. ................................
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15.8 Planer Table Assembly – Parts List Index No. Part No. Description Size Qty 1 ............... JPJ12B-401 ............. Socket Head Button Screw .................................. M4 x 0.7P x 8L ............ 8 2 ............... JPJ12B-402 ............. Cover.................................................................... .................................... 4 3 ............... JPJ12B-403 ............. Dust-Proof Felt Pad ............................................. ..............................
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15.10 Blade Guard Assembly – Parts List Index No. Part No. Description Size Qty 1 ............... JPJ12B-501 ............. External Retaining Ring, C-Type ......................... STW-11 ....................... 1 2 ............... JPJ12B-502 ............. Blade Guard ......................................................... .................................... 1 3 ............... JPJ12B-503 ............. Roll Pin ................................................................. Ø 6 x 28 ...............
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15.12 Gearbox Assembly – Parts List Index No. Part No. Description Size Qty ................. JPJ12B-GBA ............ Gearbox Assembly ............................................... .................................... 1 1 ............... TS-1503051 ............. Socket Head Cap Screw ...................................... M6 x 1.0P x 20L .......... 2 2 ............... TS-2361061 ............. Lock Washer ........................................................ M6 ............................... 2 3 ..
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15.14 Cabinet Assembly – Parts List Index No. Part No. Description Size Qty 1 ............... JPJ12B-701 ............. Hand Wheel Assembly......................................... .................................... 1 1.1 ............ JPJ12B-701-1 .......... Hand Wheel ......................................................... .................................... 1 1.2 ............ JPJ12B-701-2 .......... Handle .................................................................. .........................
Index No. Part No. Description Size Qty 38 ............. TS-1550061 ............. Flat Washer .......................................................... 8.5 x 16 x 2.0T ............ 2 39 ............. JPJ12B-739 ............. Chain Tensioner Assembly .................................. .................................... 1 40 ............. TS-2246082 ............. Socket Head Button Screw .................................. M6 x 1.0P x 8L ............ 2 41 ............. JPJ12B-741 .............
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15.16 Fence Assembly – Parts List Index No. Part No. Description Size Qty 1 ............... JPJ12B-801 ............. Fence Lock Handle .............................................. .................................... 1 2 ............... JPJ12B-802 ............. Flat Washer .......................................................... 13 x 28 x 3.0T ............. 1 3 ............... JPJ12B-803 ............. Fence Moving Bracket ......................................... ....................................
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17.0 Optional Accessories These items are purchased separately. Stock No. Description 708821 ............. Replacement Straight Knives for JPJ-12B Planer-Jointer (set of 3) 1791212 ........... Replacement Knife Inserts for JPJ-12BHH Planer-Jointer (set of 10) 709209 ............. Roller Stand, 12.5" wide 708118 .............
427 New Sanford Road La Vergne, Tennessee 37086 Phone: 800-274-6848 www.jettools.
