JUKI LH-3500A series Instruction Manual page 36

(2) Changing procedure to needle feed and the adjustment
The procedure s the reverse of "() Changng procedure to bottom feed and the adjustment".
Loosen hnge screw 1 , move needle bar rockng rod 2 from needle rocking rod fixing base 3 to needle bar
rockng rod arm 4 , and fix it with hinge screw 1 .
Replace the feed dog, the throat plate and, the presser wth the components for needle feed.
Loosen setscrews 9 and !3 ( 2 places) n sprocket !2 . Loosen the setscrews n the order of !3 and 9 . At ths
tme, remove the setscrew 9 whch s put n screw hole C , and put t n screw hole A whch s located on
the opposite side at 180˚. (Fg. b)
Turn the pulley by 180˚ without turning the hook driving shaft, align the flat section of the hook driving shaft
wth screw hole A n sprocket !2 , and fix with setscrews 9 . It s the standard that screw No.  !1 n hook
drvng shaft rear bearng !0 aligns with the flat section of the hook driving shaft. (Fg. a)
Then fix screw No. 2 !3 whch s put n screw hole B n sprocket !2 as well.
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