Table of Contents
Advertisement
7-14-2.3 Connection of the knife bracket and the driving crank
(1) Connect the knife bracket (No.1) and the driving crank (No.2) with the link (No.3).
(2) Loosen the driving crank set screw (No.4) and adjust the attaching position of the driving crank (No.2)
in the right and left direction so that the link (No.3) can contact with the same flat surface of the knife
bracket (No.1) and the driving crank (No.2) without any distortion. After the adjustment, tighten the
driving crank set screw (No.4) securely.
<2>
<4>
7-14-2.4 Adjustment of the component parts of the knife driving mechanism
(1) Attach the component parts of the knife driving mechanism and adjust the locations as shown on the
figure.
(2) When assembling the parts always, firstly insert the knife driving shaft (No.6) into the driving crank
(No.1).
(3) Fix the cam follower crank 1 (No.3) on the knife driving shaft (No.6) at the right end position 77mm
away from the front surface of the sewing machine bed as shown on the figure.
(4) Fix the stopper (No.5) on the knife driving shaft (No.6) by tightening the set screw (No.7) at the flat cut
of the shaft.
At the time, make sure there is no play on the knife driving shaft (No.6) in the axial direction and it can
be rotated smoothly.
<1>
<1>: Driving crank <2>: Spring <3>: Cam follower crank 1 <4>: Cam follower crank 2 <5>: Stopper
<6>: Knife driving shaft <7>: Set screw <8>:Adjusting bolt
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
<3>
<1>
<3>
<2>
77mm
- 29 -
<1>: Knife bracket
<2>: driving crank
<3>: Link
<4>: Set screw
<4>
<7>
<6>
<5>
<8>
Advertisement
Table of Contents
