Page 2/24
Original issue
May 2009
Service Manual
HZL-27Z
Model
Contents
1
．
Disassembling face covers
2
．
Feed dog height
3
．
Needle height
4
．
Hooking fork position of needle threader
5
．
Presser foot height
6
．
Needle position at straight stitching
7
．
M position
8
．
Needle clearance to shuttle point
9
．
Timing belt tension
10
．
Feed dog timing
11
．
Needle timing to shuttle point
12
．
Thread tension
13
．
Belt tension
14
．
Bobbin case rotation stopper
15
．
Pitch balance of buttonhole sewing
16
．
Balance of stitch length on stretch stitching