Hook Timing - Janome MC7700 QCP Service Manual

HOOK TIMING

THE AMOUNT OF ASCENDING TRAVEL OF THE NEEDLE BAR FROM ITS LOWEST POSITION TO THE
POSITION WHERE THE TIP OF THE ROTARY HOOK EXACTLY MEETS THE RIGHT SIDE OF THE NEEDLE
SHOULD BE 3.50 TO 3.75 mm.
HEXAGONAL SOCKET SCREW (A)
LOWER SHAFT
GEAR (C)
NEEDLE SIZE 14
MECHANICAL ADJUSTMENT
NEEDLE
PLATE
BOBBIN
HOLDER
HEXAGONAL SOCKET
SCREW (B)
TIP OF HOOK
3.50 – 3.75mm
LOWEST
POINT
1. REMOVE THE MACHINE BASE (SEE PAGE 3).
2. TURN THE POWER SWITCH ON AND SELECT
STITCH PATTERN (
3. SET THE ZIGZAG WIDTH AT "0.0" AND TURN THE
POWER SWITCH OFF.
4. REMOVE THE PRESSER FOOT, NEEDLE PLATE
AND BOBBIN HOLDER.
5. TURN THE HANDWHEEL TOWARD YOU TO LOWER
THE NEEDLE BAR AT ITS LOWEST POSITION.
6. LOOSEN THE HEXAGONAL SOCKET SCREWS (A)
AND (B) ON THE LOWER SHAFT GEAR (C).
7. MOVE THE NEEDLE BAR 3.5 MM – 3.75 MM FROM
THE LOWEST POSITION.
8. TURN THE LOWER SHAFT GEAR (C) UNTIL THE
TIP OF THE HOOK MEETS THE RIGHT SIDE OF
THE NEEDLE WHILE HOLDING THE HANDWHEEL.
9. TIGHTEN THE HEXAGONAL SOCKET SCREW (A)
AND (B).
10.ATTACH THE BOBBIN HOLDER, NEEDLE PLATE
AND PRESSER FOOT.
11 ATTACH THE MACHINE BASE.
11
) .