Adjustment By The Eccentric Cam - JUKI MF-7900 Instruction Manual

(2) adjustment by the eccentric cam

1
Marker lines
B
h
a
Eccentric cam
– 20 –
) Remove the top cover.
2） Loosen screw 1 .
3) Turn the eccentrc cam. The drecton of turnng the
eccentrc cam and the relaton between the eccen-
trc cam and the needle thread loop s shown n the
followng table.
4) After the adjustment, fully tghten screw 1 .
* Wth the factory-adjusted value at the tme of shp-
ment, the marker lnes are algned.
¡ Sze of needle thread loop
a Move forward
Loop becomes smaller
B Move backward
Loop becomes larger