Needle Bar Height - Janome MC7700 QCP Service Manual

NEEDLE BAR HEIGHT

BEFORE PROCEEDING WITH THIS ADJUSTMENT, CHECK THE HOOK TIMING (SEE PAGE 11). THE DISTANCE
BETWEEN THE UPPER EDGE OF THE NEEDLE EYE AND THE TIP OF THE HOOK SHOULD BE IN THE RANGE
OF 1.4 –1.75 mm WHEN THE TIP OF THE HOOK MEETS RIGHT SIDE OF THE NEEDLE IN THE LEFT NEEDLE
POSITION ( ) AS THE NEEDLE ASCENDS FROM ITS LOWEST POSITION.
HEXAGONAL SOCKET
SCREW (C)
TIP OF HOOK
NEEDLE SIZE 14
MECHANICAL ADJUSTMENT
NEEDLE
PLATE
BOBBIN
HOLDER
HOOK RACE
1.4–1.75 mm
UPPER EDGE OF
NEEDLE EYE
1. TURN THE POWER SWITCH ON AND SELECT
STITCH PATTERN (
2. SET THE ZIGZAG WIDTH AT "0.0" AND TURN THE
POWER SWITCH OFF.
REMOVE THE TOP COVER (SEE PAGE 1).
3. OPEN THE FACE PLATE.
REMOVE THE PRESSER FOOT, NEEDLE PLATE,
AND BOBBIN HOLDER.
4. TURN THE HANDWHEEL TOWARD YOU UNTIL
THE TIP OF THE HOOK MEETS THE RIGHT SIDE
OF THE NEEDLE.
5. LOOSEN THE HEXAGONAL SOCKET SCREW (C).
6. MOVE THE NEEDLE BAR TO ADJUST THE
NEEDLE BAR HEIGHT, AND TIGHTEN THE
HEXAGONAL SOCKET SCREW (C). BE CAREFUL
NOT TO TURN THE NEEDLE BAR.
7. ATTACH THE BOBBIN HOLDER, NEEDLE PLATE
AND TOP COVER.
8. CLOSE THE FACE PLATE.
12
).