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21. ADJUSTMENT OF THE THREAD CONTROLLER SPRING
For more controller action on the thread, loosen the set screw （ 1 ） at the right of
the controller and set the stop lever, and for less action set the stop higher.
To strengthen the action of the controller spring on the thread, loosen the spring
stud screw （ 4 ） at the rear of the stop screw and turn the spring stud （ 5 ） slightly
to the left with a screwdriver, or lighten its action turn to the right and securely
retighten the spring stud screw.
22. REPLACEMENT OF THE CONNECTION BELT
When the connection belt removed from the pulley for adjusting and or replacing
1)
purposes of the parts
（ 1 ） Turn the machine pulley toward you so that placed the take-up lever （ A ） at the highest position.
（ 2 ） Turn the hook shaft with the fingers until the arrow mark （ 2 ） on the hook driving shaft bushing
collarand the red point mark （ 1 ） on the hook driving shaft bushingare directly in line.
（ 3 ） Then replace the belt over the upper and lower pulley.
Fig.35
Replacement of the connection belt when damaged
2)
（ 1 ） Remove the upper arm plate and reservoir.
（ 2 ） Slide the connection belt （ A ） off from lower and upper belt pulley.
（ 3 ） Loosen the machine pulley adjustment screw （ 2 ） and two set-screws for the machine pulley
（ 3 ） , then remove the machine pulley.
（ Figs. 35 & 36 ）
- 11 -
Fig.36
（ Figs. 37 & 38 ）
（ Fig. 34 ）
Fig.34
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