Standard Adjustment - Mitsubishi PLK-G6030 Technical Manual

7. 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 shuttle hook point.
(4) Please make sure to put the safety guards (eye guards, belt guards, link covers, and finger guards or
the others) back on the initial position after the sewing machine adjustment.
7-1. 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.4) 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.2) from the face cover then, loosen the needle bar holder set screw
(No.3).
(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 bottom line.
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7-2. Adjustment of the position between the needle and the shuttle hook
(1) Turn the power switch off. Move up the needle bar (No.1) from the lowest position then, stop the
needle bar at the position where the needle bar timing mark C is matched to the needle bar bushing
(No.2) bottom line. (For the needle class DP×17)
(2) Open the cylinder cover (No.3).
(3) Remove the bobbin case (No.4).
(4) Turn the hook retainer arm (No.5) then, remove the hook retainer (No.6).
(5) Adjust the shuttle hook (No.7) point to match with the center line of the needle (No.8). The matched
position is standard.
CAUTION
Timing mark A: For the needle class DP×17
Timing mark B: For the needle class DP×5
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