Released 06/2010
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DECO 2000
1-43
10. A D J U S T M E N T A N D T I M I N G , L E F T L O O P E R A N D R I G H T L O O P E R
1) Left looper dwell position
1.1.
Loosen two screws to remove the belt guard at the handwheel and of the machine for access to the
cam lever.
1.2.
Bring the upper needle bar to its maximum upward position.
1.3.
Loosen the cam lever screw and locate the tip of the left looper at 4,8 mm from the
needle.
2) Left looper clearance
2.1.
Rotate the handwheel to bring the left looper alongside the needle.
2.2.
Check for 0,2 a• 0,8 mm clearance between the left looper and the needle. If necessary, carefully
bend the looper arm to get the proper clearance.
3) Left looper height
3.1.
Loosen the left looper arm and adjust the arm to just clear the needle bar on the return
stroke. Tighten the arm.
3.2.
Run the left looper thought its motion a few times to assure that the arm does strike the needle bar
on the return stroke.
4) Right looper dwell
4.1.
Bring the upper needle bar to its maximum upward position.
4.2.
Loosen the right looper cam lever. Move the right looper for 1,6 a• 0,8 mm clearance from
the upper needle bar. Tighten the cam lever
5) Looper timing
5.1.
Bring the upper needle bar just to its dwell position.
5.2.
Loosen the right looper cam. Rotate the cam to advance the right looper to 0,8 mm
ahead of the left looper. Tighten the cam.
N O T E : The right looper picks up the thread ahead of the left looper.
E - STANDARD MACHINE ADJUSTMENT