Timing Belt Tension - JUKI HZL-27Z Service Manual

Service Manual

9. Timing belt tension

*Timing belt is connecting with upper and lower shafts.
*If the tension is too loose, belt may jump or slip laterally and cause gap on upper and
lower shaft
If the tension is too tight, torque is increased and it is unable to keep correct number
of revolutions.
〔Adjustment〕
1. Remove front cover.
2. Loosen screw (A) and adjust position of idler pulley (B).
3. After adjustment, tighten screw (A) securely and confirm the timing of needle and
shuttle hook.
Attention ：After adjustment, check "10. Feed dog timing" and "11. Needle timing
to shuttle point - 1"
Ａ
B
Original issue
May 2009
Page 15/24
Model
HZL-27Z