background image

13. TROBLESHOOTING GUIDE FOR JET-AIR THREADING

                                                                           

(EXCEPT BLE1SX)

NOTE: Before adjustment of JET-AIR THREADING SYSTEM,
            please check the following items.

1  Is the machine lock button engaged?
2  Is the looper threader selector at the appropriate setting?
         "U" position for Upper Looper
         "L" position for Lower Looper 
         "C" position for Chain Looper  (BLE8, BLE8W, BLE5) 
3  Is there at least 2cm of the thread end in the threading port?
4  Is there at least 40cm of loose thread beyond the threads guide above 
    the threading port?
5  Is there a kink or twist in the 40cm of thread to restrict the blow into threading port?
6  Did you pull out old thread from loopers completely?
7  Is there any lint or dust in the threading port ?
8  Did you depress the looper threader lever strongly?
9  Is the machine for two thread sewing? (Is the subsidiary looper set?)
10  Did you use proper (regular) thread?
      Special decorative or thick threads are not threaded by JET-AIR. 

1

A

B

C

D

2

4 5

6

7

8

9

10

3

11

Summary of Contents for BLE1

Page 1: ...X BLE1AT BLE3ATW BLE8 BLE8W BLCS Vol 6 1 From Serial Numbers 8W K6 104507 ATW K6 148120 AT K6 104551 8W 101484 ATW 101141 AT 705451 DX 715850 8W 101201 8 501001 ATW 101081 AT 705771 DX 715800 8W 10023...

Page 2: ...e Needle System HAx1 130 705H SCHMETZ ORGAN Model Household Sewing Machine Plating Nickel Front Groove Needle System HAx1SP CR ORGAN SCHMETZ Model BLE1SX DX LX AT ATW BL101 Plating Chrome Front Groove...

Page 3: ...wise Raise needle b Height of presser foot Raise the presser foot lifter Loosen screw B and move the presser foot bar to raise or lower You are required to check the clearance between needle and press...

Page 4: ...er looper to the center of left right needle Loosen looper arm screw and adjust lower looper to the correct position Lower looper fixing screw Right Needle Lower looper position 3 5 5 7 m m 0 1 11 75...

Page 5: ...do not touch needles strongly and the distance between upper looper and needles is not big Repeat a to e until you get exact position 4 0 8 0 3 Looper arm screw for adjusting position a Replacement of...

Page 6: ...ockwise Raise feed dog Counter clockwise Lower feed dog Presser foot Pressure 1mm 1mm a FEED DOG HEIGHT ADJUSTMENT a FEED DOG POSITION ADJUSTMENT Screw of Main feed dog Rear Screw of Sub feed dog Fron...

Page 7: ...er Differential feed positining ratchet Screw Stitch length dial Sub feed dog front Main feed dog rear How to adjust a Move differential feed adjusting lever to get same moving length of main and sub...

Page 8: ...Pin Chaining tongue holder pin Chaining tongue holder Chaining tongue holder pin Adjusting chaining tongue Adjusting chaining tongue Screw A B a Move the pin to leftward b Remove chaining tongue hold...

Page 9: ...ce it b Fixing screw temporaly turn the hand pulley and bring the upper knife to the lowest positon c Adjust upper knife to be 1 1 5mm overlapping with cutting face of lower knife d Tighten firmly fix...

Page 10: ...edle O2 Thread No Use Stitch Width M Stitch Length 2 5 Differencial feed N Fabric Cotton broad 1 layer 3 7 0 1mm Fixing screw of Knife holder 5 5 3 0 Fixing screw of Knife holder Fixing screw of knife...

Page 11: ...D You are required to adjust NEEDLE THREAD SENSOR CABLE first Sewing Test with long poli span thread a 1 Needle 3 thread nomal sewing Needle Right Needle O2 Thread Long poli span thread 60 or short po...

Page 12: ...thread end in the threading port 4 Is there at least 40cm of loose thread beyond the threads guide above the threading port 5 Is there a kink or twist in the 40cm of thread to restrict the blow into...

Page 13: ...are in the center of the joint pipe receivers or not By same method as mentioned a check whether end of the joint pipe is in the centerof the pipe receiver or not In case that the end of the joint pip...

Page 14: ...Replace the piston cap to the new one 4 Give a amall amount of grease MOLYKOTE EM 50L around the piston cap and return the piston assembly to cylinder 5 Fit the piston driving shaft to the piston dri...

Page 15: ...A and B and adjust the position of looper thread take up guide 1 and overlock looper threading pipe holder set 2 so that joint pipes 3 may move smothly CHAIN LOOPER Loosen the screw C and D and adjust...

Page 16: ...grees while pushing the lock button and moving the releace lever right and left direction slowly and gently with left hand find out the best position that the end of joint pipes are in the center of l...

Page 17: ...ard and remove lower looper threading pipe downward and rightward 4 In case of replacing Joint pipe with new one remove it with Joint pipe spring very carefully 5 Replace Lower looper threading pipe 6...

Page 18: ...hten the Screw 2 Remove thickness gauge make sure the distance of disks is 0 9mm when opened 6 Replace Front disk moving arm set 7 Turn handwheel and bring the roller of Front disk moving arm set at t...

Page 19: ...t of Lower looper driving cam or Rollers you are required to do next steps 4 Remove the nut 11 of Needle driving rod set 6 and loosen the screw 13 5 Remove Needle driving rod set 6 from Lower looper d...

Page 20: ...ect position See page 2 and 3 2 Adjustment of engage position Loosen 2 screws of Machine engage plate set Turn handwheel and find out the end of joint pipes are in the center of looper joint pipes Tur...

Page 21: ...1 2 3 4 5 6 7 8 9 10 Main shaft For Lower looper driving cam For Knife driving cam For Feed dog driving cam A 8 7 0 2mm 12mm For BLE8 BLE8W BLCS For BLE1SX BLE1 BLE1DX BLE1LX BLE1AT BLE3ATW...

Page 22: ...e BLCS 3 For BLE5 BLE8W For BLE3ATW For BLCS 3 For BLE1SX DX AT Height of feed dog Distance of lower looper tip from center of lower looper shaft Distance of chain looper tip from center of chain loop...

Reviews: