Janome MC7700 QCP - Backlash of Hook Drive and Lower Shaft Gears; Backlash Adjustment Procedure

14
AA
AA
A
BB
BB
B
MECHANICAL ADJUSTMENT
1. REMOVE THE BASE COVER (REFER TO PAGE 3)
2. REMOVE THE NEEDLE, NEEDLE PLATE AND
BOBBIN HOLDER.
3. LOOSEN THE HEXAGONAL SOCKET SCREW (D).
4. IF THE BACKLASH IS TOO MUCH, TURN THE
LOWER SHAFT BUSHING IN DIRECTION A.
IF THE BACKLASH IS TOO LITTLE, TURN THE
LOWER SHAFT BUSHING IN DIRECTION B.
5. TIGHTEN THE HEXAGONAL SOCKET SCREW (D).
6. ATTACH THE NEEDLE, NEEDLE PLATE AND
BOBBIN HOLDER.
7. ATTACH THE BASE COVER.
BACKLASH OF HOOK DRIVE AND LOWER SHAFT GEARS
THE GEARS TURNS SMOOTHLY AND ROTARY PLAY OF THE HOOK SHOULD BE 0.8 mm OR LESS WHEN THE
TIP OF HOOK (E) IS WITHIN THE WIDTH OF THE FEED DOG (C) AS SHOWN BELOW.
LOWER SHAFT BUSHING
HEXAGONAL SOCKET SCREW (D)
WIDTH OF THE FEED DOG (C)
TIP OF HOOK (E)
0.8 mm OR LESS