Adjustment Of The Trimmer Cam Follower; Adjustment Of The Position Of Movable Knife - Mitsubishi Electric PLK-G1010 Technical Manual

7-14. Adjustment of the trimmer cam follower

(1) Turn the power switch off and remove the top cover.
(2) Loosen the arm set screw (No.3) to adjust the cam
follower (No.1) with a cam groove clearance of about
1mm between the cam follower and the trimmer cam (No.2).
(3) Loosen the nut (No.4) for turning the adjust screw (No.5).
(4) Turn the pulley so that the needle bar moves to the
lowest position.
(5) Push the cam follower arm (No.1) to the arrow direction
"A" and put the cam into the cam groove of the trimmer
cam (No.2).
(6) When tightening the adjust screw (No.5) in the condition
described above, the cam follower is pushed into the cam
groove then, the cam follower arm (No.1) is not returned
even when releasing the cam follower arm .
(7) When loosening the adjust screw (No.5) to the point "a"
shown on the figure, the cam follower arm (No.1) goes
back to the position in the direction "B"
Loosen the nut (No.4) from the point "a" to "b",
90-degree turns, and then fix the adjust screw (No.5).
7-15. Adjustment of the position for movable knife
(1) Tilt the sewing machine head and open the cylinder cover.
(2) Check the movable knife (No.1) whether the movable knife is at the standard home position 0.5mm
far from the front face of the shuttle hook retainer (No.2).
(3) For the adjustment of the movable knife point, loosen the hexagon head bolt (No.3) and move the
horizontal thread trimmer rod (No.4) then, adjust the position of the movable knife point.
<2>
0.5mm
<1>: Movable knife <2>: Shuttle hook retainer <3>: Hexagon head bolt <4>: Horizontal thread trimmer rod
<1>: Cam follower arm <2>: Trimmer cam
<3>: Arm set screw <4>: Nut <5>: Adjust screw
<4>
<1>
- 24 -
<5>
<1>
<4>
1mm
<2>
A
<3>
<3>
b
B
a