Adjustment Of The Position Between The Needle And The Rotating Hook - Mitsubishi Electric PLK-J2516R-YU Technical Manual

6-2 Adjustment of the position between the needle and the rotating hook

(1) Turn the power switch OFF.
(2) Open the cylinder cover (No.1).
(3) Remove the bobbin case (No.2).
(4) Remove the sliding plate (No.3).
(5) Loosen the three of hook set screws (No.4).
<2>
<1>: Cylinder cover <2>: Bobbin case <3>: Sliding plate <4>: Hook set screw
(6) Turn the sewing machine pulley by hand then, move up the needle bar (No.5) from the lowest position
and stop it at the position (No.6) where the needle bar timing mark C is matched to the needle bar
bushing bottom line.
NOTE If the needle class is DPX5, match the needle bar timing mark D to the needle bar bushing
bottom line.
C
<5>
<5>: Needle bar <6>: Needle bar bushing bottom line
Timing mark C: For the needle class DP×17
Timing mark D: For the needle class DP×5
<1>
D
C
<3>
<6>
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<4>