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66
Maintenance
6.1) Adjustment of Needle Bar Height
Place the needle bar at the lowest position, and loosen the
needle bar holder screws. Find an upper punched mark in
line with the specification of the needle to be applied and
make it touch the bottom of the needle bar bushing. When
the adjustment is completed, fasten the tightening screw for
the needle bar holder.
6.2) Adjustment of Needle and Hook
6.2.1) Full Rotation (BR type)
Find the proper lower punched mark for the needle
applied when the needle bar ascends from the lowest
point. Make the lower punched mark meet the bottom of
the bushing.
6.2.2) Semi-Rotation (BS type)
－
Loosen the shuttle driver screw and open the inner hook presser bar on the left and right side. And then remove the
shuttle racing from the shuttle (large).
－
Make the hook point of the shuttle meet the center of the needle. Since it prevents the bending of the needle, the front
section of the shuttle driver shall touch the needle. Then fasten the fixing screw.
－
Loosen the fixing screws for the shuttle (large). And Turn the large hook adjusting shaft right or left and adjust the front and
rear position of the shuttle (large) to set the distance between the needle and the shuttle hook point at 0.05~1mm.
－
After adjusting the front and rear position of the shuttle (large), set the distance between the needle and the shuttle (large) at
7.5mm by adjusting the rotary direction of the shuttle (large), and then fasten the tightening screw of the large hook.
Tightening
Screw
DP
×
15
Less than
DP
×
17 #22
DP
×
17
#22 or above
Needle Bar
Lower Bushing
DP
×
17
#22 or above
Less than
DP
×
17 #22
DP
×
5
Inner
Hook
Presser
Bar
Inner Hook
Presser Bar
Race Ring
7.5mm
0.05~1mm
0mm
Tightening Screw
of Shuttle (large)
Shuttle (large)
Tightening Screw
of Shuttle Driver
To prevent safety accidents from occurring, adjust the shuttle (large) and then tightly fasten each
tightening screw.
Caution
Adjusting Shaft
