Released 06/2010
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DECO 2000
1-29
2. A D J U S T M E N T O F N E E D L E B A R S
1.) Adjust the upper needle bar
1.1.
Move the upper needle bar to its DWELL position.
1.2.
Use the square head adjustment on the rear of the rocker arm to move the needle bar up and down.
First loosen the clamping screw.
1.3.
Use the gauge from the accessories 37771023 to measure 14,2 mm between the lip on the needle
bar - not the sleeve to the throat plate.
1.4.
Adjust the upper needle bar to the gauge. Tighten the clamping screw.
2) Adjust the lower needle bar
2.1.
Bring the needle bar to the closest point while transferring the needle.
2.2.
Use the square head adjustment on the rear of the lower rocker arm to move the needle bar up
and down. First loosen the clamping screw.
2.3.
Use the gauge 37771-023 to measure 23,8 mm between the lip on the lower needle bar and the lip
on the upper needle bar. Do not measure to the needle sleeves.
2.4.
Adjust the lower needle bar to the gauge. Tighten the clamping screw.
2.5
Move the needle up and down. The needle should be free to move 0,4 to 1,2 mm.
3) Adjust the needle release
3.1.
With the needle in the upper needle bar, rotate the handwheel to bring the needle just to the transfer
point to the lower needle bar.
3.2.
Move the handwheel back and forth slightly to test the needle release from the upper needle bar.
3.3.
Loosen the jam nut on the top of the needle bar . Rotate the sleeve adjust nut
counterclockwise (viewed from above) quarter turn at a time until the needle does not release.
Reverse the nut clockwise until the needle just release at the transfer point.
Turn clockwise (half turn). Tighten the jam nut.
3.4.
Make the same adjustment on the lower needle bar to get needle release from the lower needle bar
to the upper needle bar. Oscillate the handwheel to assure that the needle transfers properly.
E - STANDARD MACHINE ADJUSTMENT