Standard Adjustment; Adjustment Of The Needle Bar Position - Mitsubishi Electric PLK-J4040R Technical Manual

6. STANDARD ADJUSTMENT

(1) Please make sure to turn the power switch off before adjusting the sewing machine.
(2) When adjusting the sewing machine with the power switch on, please be careful not to step on the
foot switch by mistake.
(3) Please be careful not to be injured by a sharp part such as the needle and the hook point.
(4) Please make sure to put the safety guards (eye guards, link covers, and finger guards or the others)
back on the initial position after the sewing machine adjustment.

6-1. Adjustment of the needle bar position

(1) Turn the power switch off then, stop the needle bar (No.1) at the lowest position.
(2) Move the needle bar to the position where the needle bar timing mark A is matched to the needle bar
bushing (No.2) bottom line. (For the needle class DP×17)
(3) If the position of the needle bar timing mark A is not matched to the needle bar bushing bottom line,
remove the rubber plug (No.3) from the face cover then, loosen the needle bar holder set screw (No.4).
(4) For the needle class DP×5, move the needle bar to the position where the needle bar timing mark B is
matched to the needle bar bushing (No.2) bottom line.
<3>
<1>: Needle bar <2>: Needle bar bushing <3>: Rubber plug <4>: Needle bar holder set screw
Timing mark A: For the needle class DP×17
Timing mark B: For the needle class DP×5
CAUTION
<4>
A
<4>
- 15 -
<2>
B
<1>