Page 15/19
Original issue
Jun. 2012
Service Manual
HZL-12Z
Model
10. CLEARANCE BETWEEN NEEDLE AND
SHUTTLE HOOK POINT
〔
Checking
〕
1. Remove a bobbin case and a shuttle race cover from a shuttle race.
2. Set the zigzag width at “maximum”.
3. Turning a hand wheel by hand, bring up a needle from its right hand and lowest
position, until a shuttle hook point comes to align with left side of needle. At this
position, check if clearance between a shuttle hook point and a needle plate
eyehole is 0 – 0.1 mm.
〔
Adjustment
〕
1. Remove outer covers.
2. Loosen screws(2) of a shuttle race(set)(1) and adjust the position.
Fix a gage and conform needle plate hole’s position to a boss’.
3. Check if a boss of a gage goes up and down smoothly.
4. Tighten screws(2) after the position is fixed.
0 - 0.1mm
1
2
Gage
A boss of a gage comes out of a needle
plate eyehole