Loop Lift - Bernina 900 electronic Service Manual

It the shaft jams, this can be corrected
by rotating rack (61) radiaily, Reinsert
screw (58) and retighten
For security
recheck the return motion
LI
Left-hand stitch
!lz
~~~~~~~~~143
0
* 141 i~~~~14
218-
313fm
Fig 39
Fig 37
Fig 38
4. Loop lift
arnd the rower end of swivei support ftlS)
The loop litt is the path covered by tte
and tighten the cramp by pressing the
needle from its lowest point up to the
gauge against needle bar (141)
After
moment when shuttle tiy enters the
withdrawing the gauge. lift needle bar by
thread loop,
rotating the handwheel in the operating
Thread loop.nd mdel diection until the clarmip rests against the
Type 900 and models:
needle bar support When the needle bar
Loop lift 1,8 mm (return motion 2.8 to
is in this position
the shuttle tip must
3 mrrim)
right hand needle edge be in line with
The moop
it
is adjusted in the
eirh-hand the, To correct, loosen both screws (66)
stitch position with loop lift gauge No
and (67) on litt crank (683) By rotating
39800804 t142)
the lift crank, adjust the shuttle with the
shuttle drive in such a manner that the
Left-hand stitch
shuttle tip becomes flush with the right-
Set the needle in the left-hand stitch to
hand needle edge.
its lowest point. Now, place clamp i143)
Tighten the screw and check setting
398005043 on the needle bar IM
insert again Remove camp and rotate the lift
gauge (142) 1.8 mm between clamPi
143 crank until screw (671 is accessible
22