MECHANICAL ADJUSTMENT
HOOK TIMING
CORRECT SETTING
THE STANDARD HEIGHT OF NEEDLE POINT FROM ITS LOWEST POINT OF TRAVEL SHOULD BE
IN THE RANGE OF 1.45 mm - 1.95 mm WHEN THE TIP OF SHUTTLE HOOK MEETS EXACTLY THE
LEFT SIDE OF NEEDLE AT LEFT NEEDLE POSITION.
TO ADJUST
1.
SET THE SELECTOR DIAL AT “B”.
NOTE:
FOR MODEL JF1004 , SET THE PATTERN SELECTOR DIAL AT “ “.
FOR MODEL JF1022 AD JF1018, SET THE PATTERN SELECTOR DIAL AT “A”.
SET THE WIDTH SELECTOR DIAL AT “ 0 “.
2.
REMOVE THE FRONT PANEL COVER UNIT.
3.
REMOVE TE MOTOR.
4.
REMOVE THE SHUTTLE RACE RING.
5.
TURN THE BARANCE WHEEL TOWARD YOU UNTIL THE TIP OF SHUTTLE HOOK MEETS
THE LEFT SIDE OF NEEDLE.
6.
LOOSEN THW LOWER SAHAFT CRANK ARM SET SCREW (2 PCS.).
7.
WHILE HOLDING THE SHUTTLE HOOK NUT TO TURN, TURN THE BARANCE WHEEL
TOWARD YOU NTIL NEEDLE COMES TO ITS LOWEST POSITION.
THEN, FURTHER TURN THE BALANCE WHEEL TO RAISE THE NEEDLE ABOUT 1.7 mm
ROM ITS LOWEST POSITION.
8.
TIGHTEN THE SET SCREW.
9.
TURN THE BARANCE WHEEL TOWARD YOU TO CHECK IF THE HEIGHT IS THE RANGE OF
1.45 mm -1.95 mm.
IF IT IS NOT IN THE RANGE, REPEAT THE ABOVE PROCEDURE.
10.
ATTACH THE SHUTTLE RACE RING.
11.
ATTACH THE MOTOR AND ADJUST THE BELT TENSION.
12.
ATTACH THE FROT PANEL COVER UNIT.
LOWEST POSITION
1.45 mm - 1.95 mm
LOWER SHAFT CRONK ARM
LOWER SHAFT
SET SCREW (2 PCS.)
16
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