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CAM STACK (Cont'd.)
Setting Cam-Selector-Arm Stops
Remove arm top cover.
Check adjustment of worm wheel
shaft (see in¬
struction on page
17).
Set selector at "D" and "L1*.
Turn hand wheel over toward operator until arm-
bracket
followers rest upon high
points
of bottom
(zigzag) cam of cam stack.
At this setting, when stitch pattern selectors are
depressed
as
far
as
possible,
clearance between
both followers and high point of bottom cam should
be 0.010 and 0.012 inch.
Front Selector-Arm Stop
Disengage release mechanism by pushing
in on
upper selector button.
Loosen screw in front selector-arm stop and de¬
press top selector button until there is approximately
0.010 inch clearance between front follower and cam.
Maintain this clearance while moving stop toward
front
of machine until
it makes
contact with front
selector-arm. Then tighten screw securely.
Rear Selector Arm Stop
Loosen
stop-bushing
set-screw
at rear
of cam-
selector arm-shaft. ?-ess lower selector button until
there is ccDroximateiv 0.010 inch clearance between
■ear '
0
! lower one ram.
rlcintcin this set- ng
vn: !e moving stoo ousning
•award '"rant at macrvne _nr;
t maxes contact witn
rear
-ol .ewer-arm,
men
rignten
set
screw
securely.
Aligning Indicator with Selector Letters
Indicators
"A"
to
"J"
Loosen set screw through hole in upper selector
arm.
Align indicator mark with "A" position on front
panel,
making sure that rear follower is
in contact
with
aluminum bight-control
ring
(lowest ring with
largest diameter under the cam stack). Tighten set
screw securely.
Indicator "K" to "Special"
Loosen
hex head
screw
in
front follower arm.
Align indicator mark with "K" position on front
panel, making sure that front follower is in contact
with aluminum bight-control ring (third ring from bot¬
tom
under the cam
stack).
Then tighten hex head
screw
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