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HOW TO USE
K Installation position of the
thread trimmer cam
( 1 ) Adjust so that the gap between the lower
shaft bushing (middle) and the bushing is
6 mm and then tighten the screw Ⓐ to the
flat on the lower shaft.
( 2 ) Place the thread trimmer cam on the end
face of the bushing and the thread tension
releasing cam on the end face of the thread
trimmer cam (making the gap between each
part zero), then tighten each screw.
L Adjustment of the thread trimmer cam
( 1 ) Turn the pulley and stop it at the position where the needle comes to the lowest.
( 2 ) Put the cam roller into the thread trimmer cam groove by pushing the cam follower crank.
( 3 ) Turning the pulley, adjust the thread trimmer cam so that the movable knife starts moving when
the green mark point on the pulley comes in line with the black mark point on the arm.
To adjust, loosen two thread trimmer cam clamp screws Ⓐ.
Cam groove
Lower shaft bushing (middle)
Thread tension releasing cam
Thread trimmer cam
Cam follower crank
Cam roller
Screw Ⓐ
Thread trimmer cam
— 16 —
Screw Ⓐ
Bushing
Feed connecting rod
6 mm
Green mark point
Arm
Black mark point
Reverse block
Set screw
Pulley
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