Mitsubishi LT2-230 - Adjustment for Change of Needle Gage

OPERATION
24 Adjustment for change of needle gage
(1) Replace the throat plate, feed dog and needle clamp.
(Since the throat plate and feed dog are special parts designed for thread trimming machine, be
sure to use those specified by us.)
(2) Lean the machine head backward.
(3) Loosen two connecting linkclampbolts(j).
(4) Remove the spring @ .
(5) Loosen the hook bracket clamp screws (§) and (g) and adjust gap between each needle and
hook.
(6) When the needles and hooks have been adjusted, install the spring .
(7) Contact the rocking cranks (c) and @ to the stopper pins (§) and and tighten the connecint
link clamp bolt(j).
(8) Turn the balance wheel by hand until the needles reach the lowest position.
(9) Loosen the nuts (§)and (H) .
(10) Depress the cam follower crank ® and adjust the connecting rod© sothatthe cam roller can
smoothly enter the groove of thread trimmer cam. Then tighten the nuts (G) and (0).
(11) Adjustment of the cam groove and the cam roller
(a) Push the cam follower crank so that the cam roller enters into the cam groove.
(b) Turn the connecting rod and adjust the clearance between the cam roller and the cam
groove surface (n)as small as possible, and tighten the nuts(g)and (H) .
(c) Push the cam follower crank again and check that the cam roller enters into the thread
trimmer cam groove smoothly.
Thread trimmer
rockingcrank (©
Connecting link
Hook bracket
(left)
Screw W
Stopper pin
Screw® Bolt® Stopper pin© ,
Thread trimmer ®
rocking crank®
-20-
Cam roller
Cam groove
Screw®
Hook bracket
(right)
Spring
Nut®
Connecting rod(0
Nut®
,Cam follower
crank
, Thread trimmer
cam
- Lower
33 'f"®"
Cam follower
crank ®
Thread trimmer cam
From the library of: Superior Sewing Machine & Supply LLC