(2) Move the driving knife shaft 6 up or down to adjust the position of the driving knife 1.
16
—
—
(3) Tighten the screws 2 and 5 on the setting collars again.
30)
Adjusting the driving knife stop position
The distance from the blade of the fixed knife 2 to the end of the driving knife 1 should be 0.5mm when
the driving knife 1 has moved as far as possible toward the fixed knife 2.
(1) Tilt back the machine head.
(2) Turn the machine pulley to move the roller 6 of the driving knife arm 5 to the outermost side (right side)
of the thread trimmer cam 7.
(3) Loosen the bolt 4.
(4) Move the driving knife 1 so that the distance between the blade of the fixed knife 2 to the end of the
driving knife 1 is 0.5 mm, and then tighten the bolt 4.
31)
Adjusting the driving knife operating position
The standard distance from the left side of driving knife arm 1 to the screw tip on the plunger 2 of the
thread trimming solenoid is 1 mm. The clearance between the outermost side (right side) of the thread trimmer
cam 5 and the roller 6 of the driving knife arm should be 0.1 mm.
(1) Overturn the arm.
(2) Loosen the bolt 3
(3) Turn the plunger 2 of the thread trimming solen
ving knife
arm 1 to the screw tip on the plunger 2 of the thread tri
bolt 3.
oid so that the distance from the left side of dri
mming solenoid is 1 mm, and then tighten the
Summary of Contents for GC20688-BDC
Page 24: ...A ARM BED MECHANISM 21...
Page 28: ...B THREAD TENSION REGULATOR MECHANISM 25...
Page 31: ...C NEEDLE BAR AND THREAD TAKE UP MECHANISM 28...
Page 34: ...D PRESSER FOOT MECHANISM 31...
Page 37: ...E UPPER FEED LIFTING ROCK SHAFT MECHANISM 34...
Page 40: ...F STITCH REGULATOR MECHANISM 37...
Page 43: ...G FEEDING AND FEED LIFTING HOOK SHAFT MECHANISM 40...
Page 46: ...H HOOK SADDLE MECHANISM 43...
Page 50: ...I OIL LUBRICATION MECHANISM 47...
Page 53: ...J ACCESSORIES 50...
Page 55: ...K PNEUMATIC CONTROL MECHANISM 52...
Page 57: ...L KNIFFE MECHANISM 54...
