HappyJapan HCH-701-30, Maintenance Manual

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26
Exchange of crank
3-2-1
17. Put parts once removed back in reverse order
For adjusting fixing of each unit, please refer to process
to adjust fixing of each unit.
<Important> Pay attention to following (1) - (4).
(1)Please fix upper pulley, crank ass’y
on flat surface of upper shaft with screw tightly.
(2)
Please push the Upper shaft to arrow marked direction
and make sure that the Upper shaft collar are attached
without space from machine body.
Upper shaft collar
(3)Position of upper pulley is space from upper
shaft
collar.
(4)Confirm that belt is not interfere the pulley flange and
not come out from pulley groove.
18. Please check and adjust timing mentioned below to finish.
(1)Upper shaft timing (L point, C point)
(2)Take-up lever timing
(3)Rotary hook timing
(4)Jump device
(5)Needle height
12mm