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12

4. Remove 

the 

table insert

 (B) and 

table pin

 (C). 

5.  Loosen blade tension by turning the 

tension 

knob 

(A) counterclockwise. 

6. Remove 

blade

 (J) from upper and lower wheels 

and from between the 

upper

 (F) and 

lower 

blade guides 

(G).  

7.  Turn the blade to direct it through the slot in 

table and remove. 

8.  Guide the new blade through table slot leading 

with the smooth edge. Place it around the 
upper and lower wheels and into the 

upper

 (F) 

and 

lower blade guides 

(G). 

Note:

 The blade teeth should face the operator, 

and they should point down toward the table. 

9.  Position the blade to track in the middle of the 

rubber tires on the wheels. 

10. Re-install the 

table insert

 (B), 

table pin

 (C) and 

blade guard

 (H). 

11. Tension and track the blade before operating 

saw (see 

Adjusting Blade Tension 

and 

Adjusting Blade Tracking

 sections below). 

 

 

Adjusting Blade Tension 

Referring to Figure 9: 

1.  Disconnect machine from power source. 

2. Turn 

blade tension knob

 clockwise to tension 

blade. 

3.  Apply just enough tension to take the slack out 

of the blade. 

4.  Turn one wheel a few times to move the blade 

to the center of the tire. 

5.  With a meter, tension the blade appropriately 

for the size of blade used. 

6. A 

gauge

 on the upper wheel slide bracket 

indicates the approximate tension according to 
the width of the blade. Initially, set the blade 
tension to correspond to the blade width as 
marked on the gauge. 

Note 1: 

As you become more experienced 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. 

Note 2:

 Keep in mind that too little or too much 

blade tension can cause blade breakage. 

 

Adjusting Blade Tracking 

Referring to Figure 9: 

 Disconnect machine from the 

power source! Never adjust blade tracking with 
the machine running! Failure to comply may 
cause serious injury! 

Tracking 

refers to how the blade is situated upon 

the wheels while in motion. The blade should track 
in the center of both wheels. 
 

 

Figure 9 

The blade must be properly tensioned before 
adjusting blade tracking. Make sure blade guides 
and blade bearings do not interfere with the blade. 

1.  Open the top wheel cover. Rotate the wheel 

forward by hand, and observe the position of 
the blade on the wheel. It should be in the 
center of the wheel. 

2.  If adjustment is necessary, loosen wing nut. 

Tightening the tracking knob slightly will move 
blade so it tracks towards the rear of machine. 
Loosening the tracking knob slightly will cause 
the blade to track toward the front of the 
machine. 

3.  After blade is tracking in the center of the 

wheel, tighten the wing nut. 

Summary of Contents for JWBS-12OS

Page 1: ...al 12 inch Woodworking Band Saw Model JWBS 12OS WMH TOOL GROUP Inc 2420 Vantage Drive Elgin Illinois 60124 Part No M 708901B Ph 800 274 6848 Revision C 06 07 www wmhtoolgroup com Copyright 2007 WMH Tool Group Inc This Manual is Bookmarked ...

Page 2: ...amination postage prepaid to a location designated by us For the name of the location nearest you please call 1 800 274 6848 You must provide proof of initial purchase date and an explanation of the complaint must accompany the merchandise If our inspection discloses a defect we will repair or replace the product or refund the purchase price at our option We will return the repaired product or rep...

Page 3: ...ng 13 Upper Blade Guide Tension Adjustment 13 Blade Guide Block Adjustment 13 Blade Support Bearing Adjustment 14 Adjusting V Belt Tension 14 Adjusting Blade Tracking 12 Troubleshooting JWBS 12OS Band Saw 15 Parts 15 Ordering Replacement Parts 15 Body Assembly 16 Open Stand Assembly 20 Optional Accessories 21 Electrical Connection 21 The specifications in this manual are given as general informati...

Page 4: ...ples 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 s...

Page 5: ...26 Use recommended accessories improper accessories may be hazardous 27 Maintain tools with care Keep saw blades sharp and clean for the best and safest performance Follow instructions for lubricating and changing accessories 28 Make sure the work piece is held firmly against the rip fence or miter gauge as it is fed through the blade 29 Turn off the machine before cleaning Use a brush or compress...

Page 6: ...or operation Failure to comply may cause serious injury Unpacking 1 Remove all contents from the shipping carton Do not discard the carton or packing material until the bandsaw is assembled and is running satisfactorily 2 Inspect the contents for shipping damage Report damage if any to your distributor The required hardware for all assembly on this machine is found in the Hardware Bag for Stand As...

Page 7: ...t Plate 2 L Long Support Plate 2 Manual not shown Hardware for Saw Body actual size Hardware for Stand Q Hex Nut M8 40 S Lock Washer M8 40 T Flat Washer M8xØ18 40 W Carriage Bolt M8x16 40 Contents of the Carton Hardware for Saw Body M Hex Cap Screw M6x70 1 N Hex Cap Screw M8x35 4 O Hex Cap Screw M8x20 4 P Flat Washer M8xØ23 8 Q Hex Nut M8 4 R Hex Nut M6 1 S Lock Washer M8 8 T Flat Washer M8xØ18 4 ...

Page 8: ...ll four legs are contacting the surface 5 Tighten all nuts with a 13mm socket or wrench Mounting Bandsaw to Table The saw body is heavy Use caution when lifting Stabilize until firmly attached to the stand Failure to comply may cause serious injury Referring to Figure 2 1 With the aid of a second person lift the saw body A and place onto the stand top Be sure front of saw with JET logo faces stand...

Page 9: ...m of the trunnion and through the support bracket CC 4 Thread the lock handle CB onto the screw protruding through the bottom of the support bracket CC Adjust the trunnion C to 0º then secure by tightening the lock handle CB Table Installation 5 Remove the insert BA and pin BB from the table B 6 Maneuver the table B to allow the saw blade AA to pass through the slot BC to the round opening in the ...

Page 10: ...operation This bandsaw when wired for 115 volts is intended for use on a circuit that has an outlet and a plug that looks like the one illustrated in Figure 4 A temporary adapter like the adapter in Figure 5 may be used to connect this plug to a two pole receptacle as shown in Figure 5 if a properly grounded outlet is not available The temporary adapter should only be used until a properly grounde...

Page 11: ...placed on the table and against the blade Figure 7 to see if the table is 90 degrees to the blade 4 If an adjustment is necessary loosen the lock handle tilt table from the table stop as shown and lock in place 5 Loosen the jam nut and turn the table stop left or right to raise or lower the stop Tighten the jam nut to hold the table stop in place 6 Unlock the table tilt back letting it rest agains...

Page 12: ...cates the approximate tension according to the width of the blade Initially set the blade tension to correspond to the blade width as marked on the gauge Note 1 As you become more experienced 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 Note 2 Keep in mind t...

Page 13: ...ees of resistance against the guide post To adjust tension on the spring 1 Using a 5mm hex wrench not provided tight en or loosen the setscrew B until desired tension is reached 2 Reattach and tighten the knob A Blade Guide Block Adjustment This adjustment is the same for upper and lower blade guides Only the upper blade guide is shown Never operate the Band Saw without all guards in place and in ...

Page 14: ...n Never operate the Band Saw without all guards in place and in working order Referring to Figure 12 1 Unplug the machine from the power source 2 Remove the saw blade as described in Changing Blades on page 11 3 With a 13mm wrench remove the hex cap screw A Note The hex cap screw has a reverse left hand thread Turn clockwise to remove 4 Remove the washer B and wheel C 5 With a 6mm hex wrench loose...

Page 15: ... according to blade size Blade wanders during cut Guides not set properly Adjust guides Dull blade Replace blade Blade mounted wrong Teeth should face operator and point downward Gum or pitch on blade Remove blade and clean with oven cleaner or other solvent Incorrect blade for cut Change blade to correct type Saw makes unsatisfactory cuts Gum or pitch on table Clean table Extension cord too light...

Page 16: ...h 1 24 TS 1533052 Pan Head Screw M5 x 16 2 25 TS 1504051 Socket Head Cap Screw M8 x 25 4 26 TS 1551061 Lock Washer M8 4 27 360085 Bushing 1 28 120004 Upper Wheel 1 29 120005 Wheel Tire 1 30 RR350000 Retaining Ring R35 1 31 BB 6202ZZ Ball Bearing 6202ZZ 2 32 NH121901 Nut M12 1 33 120006 Lower Wheel 1 34 120005 Wheel Tire 1 35 KP050520 Key 5 x 5 x 20 1 36 SH080402 Hex Cap Bolt Left Hand Thread M8 x ...

Page 17: ...d 1 86 120015 Lower Support Bracket Post 1 87 SF069300 Pan Head Screw w Flange M6 x 12 4 88 120013 Bracket 1 89 120014 Spacing Sleeve 1 90 BB 608ZZ Ball Bearing 608ZZ 1 91 SF059100 Pan Head Screw w Flange M5 x 6 1 92 TS 2246122 Button Head Socket Screw M6 x 12 1 93 KP080818 Guide Block 8 x 8 x 18 2 94 SU069300 Thumb Screw M6 x 12 2 95 TS 2246122 Button Head Socket Screw M6 x 12 1 96 TS 1550041 Fla...

Page 18: ...sher M8 3 133 TS 1550061 Flat Washer M8 4 134 VB A18 V Belt A 18 1 135 200106 Pulley 1 136 120028 Pulley 1 137 TS 1550061 Flat Washer M8 1 138 TS 1490021 Hex Cap Screw M8 x 16 1 139 TS 1490061 Hex Cap Screw M8 x 35 4 140 JWBS12OS 140 Switch Plate 1 150 JWBS12OS 150 Trunnion Clamp Shoe 1 151 JWBS12OS 151 Scale Label 1 JSL12BS MFC Motor Fan Cover not shown 1 JSL12BS CC Capacitor Cover not shown 1 JS...

Page 19: ...19 Body Assembly ...

Page 20: ...42 JWBS12OS 142 JET Logo 1 143 150603W Support Leg 4 144 612050W Support Plate long 2 145 612051W Support Plate short 2 146 TS 1540061 Hex Nut M8 40 147 SC089400 Carriage Bolt M8 x 16 40 148 TS 1550061 Flat Washer M8 40 149 TS 2361081 Lock Washer M8 40 AH 61202K Hardware Kit Stand Assembly 1 ...

Page 21: ...Rip Fence Assembly JWBS 12RF 82 Saw Blades 709390 1 8 x 018 x 8 T P I Hook Tooth 709391 3 16 x 020 x 6 T P I Skip Tooth 709392 1 4 x 020 x 6 T P I Skip Tooth 709393 3 8 x 020 x 4 T P I Skip Tooth 709394 1 2 x 020 x 3 T P I Hook Tooth Re saw Electrical Connection ...

Page 22: ...22 Notes ...

Page 23: ...23 Notes ...

Page 24: ...24 WMH Tool Group Inc 2420 Vantage Drive Elgin Illinois 60124 Phone 800 274 6848 www wmhtoolgroup com ...

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