E Adjustment The Feed Timing (Feed Upper / Lower Position) - JUKI LY3-6840-B0T Instruction Manual

HOW TO USE
E Adjustment the feed timing (feed upper / lower position)
( 1 ) Remove the parts in the order of the upper cylinder cover, throat plate, eccentric shaft, feed bar
support screw, feed bar, hook cover, throat plate rest, and hook.
( 2 ) Next, remove the screws fixing the presser plate, spacer, and special plate.
( 3 ) Align the needle bar to the lowest position, and then turn the pulley forward to raise the needle bar.
Align the line etched at the bottom of the needle bar with the lower end of the needle bar metal.
( 4 ) Assemble so that the match mark on the feed driving cam is within the 20° range shown in the drawing.
Note: If the match mark is one tooth to the right from the 20° range in the drawing, the needle will
puncture the fabric after the feed is completely sunken, or after the fabric is fed. Thus, this is
suitable for sewing thick fabrics.
Note: If the match mark is one tooth to the left from the 20° range in the drawing, the fabric will be
fed while the balance tightens the thread, so the thread tightening will improve.
Throat plate
Throat plate rest
Hook cover
Rotating hook
Lower shaft
Matching mark
Feed dog
Feed bar
Eccentric shaft
Feed driving cam
Special plate
Spacer
Presser plate
Feed driving cam
20°
Screw
Lower shaft
Feed driving cam holder
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