Harmony 9002D, Руководство по обслуживанию, Страница: 15 / 28

TO ADJUST THE CLEARANCE BETWEEN
THE NEEDLES AND THE LOWER
LOOPER/NEEDLE GUARDS (1 of 3)
Correct Setting:
Both right and left needles should have an equal clearance from the front edge of the needle
holes on the needle plate.
The standard clearance between the left and right needle and the lower looper is 0 mm to 0.5 mm.
The standard clearance between the needle and the rear needle guard is 0 mm to 0.2 mm.
The above standard clearance allows the needle to slightly touch the front needle guard.
To adjust:
1. Remove the looper cover unit, face plate unit, back cover unit front cover unit, presser foot, needle
plate and needles.
2. Before loosening setscrew C, attach the needle gauge #787-G02 to prevent change of needle
bar height during the adjustment.
Attach two #11 needles on the needle cramp and loosen setscrew C. Adjust the two needles,
to make the clearance between both needles and the front edge of the needle hole of the needle
plate equal by turning the needle bar in the D or E direction while pushing up the needle bar to
prevent change of needle bar height.
Retighten setscrew C and remove the needle gauge.
Needle clamp
Setscrew (C)
Needle bar lower bushing
No clearance
Needle gauge
(787-G02)
Lower looper
Needle
(D)
(E)
Needle (R)
Equal clearance
Needle plate
Needle (L)
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