Initial Needle Bar Height; Needle Bar Height Adjustment - KANSAI SPECIAL JJ Series Parts List, Instructions

【 5】 NEEDLE BAR HEIGHT ADJUSTMENT

5-1 Initial needle bar height

Initial needle bar height is set by the height between the needle plate and the tip of the
center needle when the needle bar is at its highest position of travel.
Refer to the illustration below.
JJ5004 JJ5014
JJ5005

5-2 Needle bar height adjustment

To make this adjustment, loosen screw "a" and take out top cover "b" .
Loosen screw A and move needle bar up or down as required.
Model A(mm)
JJ5004GS-01M 10.5
JJ5005GS-10M 10.5
JJ5004GE-01H 11.9
JJ5014GH-01M 10.5
JJ5014GE-01H 11.9
JJ5014GS-90M 10.5
J J
J J
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【 6】 LOWER LOOPER AND NEEDLE TIMING
6-1 Distance between lower looper and needle
The distance is relation between the looper and the needle when the lower looper is at the
extreme left of its travel. Distance varies according to models.
Refer to the illustration below. Before adjustment, loosen the screw A.
JJ5004
JJ5005
6-2 Clearance between the point of the lower looper and the center of the needle
Bring the point of the lower looper to the center of the needle to have them allow
clearance of 0~0.05mm.
To make this adjustment, loosen screw A in the above illustration.
s s
JJ5014
＜ Note ＞
Care should be taken not to disturb the distance between the lower
looper and the needle when the lower looper holder is moving.
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Model B(mm)
JJ5004GS-01M 3.8
JJ5005GS-10M 3.8
JJ5004GE-01H 4.2
JJ5014GH-01M 3.8
JJ5014GE-01H 4.2
JJ5014GS-90M 3.8
J J
J J
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