Happy HCS2-1201-30, Maintenance Manual

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3-6-1 Assemble the arm ass’y
1. Assemble the arm ass’y tentatively.
2. Hold arm to backward and tighten only hithermost
screw.
<Caution>
Make sure that there is clearance between arm and
body.
3. Hold the left side of arm to body and tighten screw.
4. Hold the right side of arm to arrow pointed direction
at below picture and tighten screw.
5. Assemble detecting plate.
Make sure that detecting plate is mount perpendicular and
parallel to the arm.