7. ADJUSTMENTS
RH-9820
148
7-6. Adjusting the height of the needle bar
The standard height for the needle bar is 2.5 mm. (It may be preferable to change this depending on the material and thread.)
1. Remove the face plate.
2. Turn the upper shaft pulley until the tip of the eye looper (1) is aligned with the top edge of the needle hole in the needle
center (2) when the needle is at the inside sewing position.
3. Loosen the two screws (4) of the top and bottom needle bar clamps (3).
4. Lower the needle bar (5) 2.5 mm from the position where the tip of the eye looper (1) is aligned with the top edge of the
needle hole.
5. In order to make the needle bar turn smoothly, adjust so that there is no play in the needle bar, but so that there is enough of
a gap between the needle bar clamps (3) and the needle bar feed rock link (6) for oil to get into.
6. Once adjustment is complete, securely tighten the two screws (4) and install the face plate.
0497B
0450B
0496B
0328B
Содержание RH-9820
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Страница 46: ...4 MECHANICAL DESCRIPTIONS RH 9820 37 ...
Страница 58: ...5 DISASSEMBLY RH 9820 49 5 10 Lubrication 1089B ...
Страница 124: ...6 ASSEMBLY RH 9820 115 6 19 Covers 1064B ...
Страница 210: ...8 ELECTRICAL MECHANISM 201 RH 9820 PMD P C board Power supply motor P C board 0693B 4593Q ...
Страница 211: ...8 ELECTRICAL MECHANISM 202 RH 9820 Panel P C board 0694B ...
Страница 217: ...8 ELECTRICAL MECHANISM 208 RH 9820 0761B ...
Страница 218: ...8 ELECTRICAL MECHANISM 209 RH 9820 0762B ...
Страница 236: ...SERVICE MANUAL RH 9820 I6100920B 2007 03 B 1 Printed in Japan ...