9
NEEDLE BAR HEIGHT
Turn handwheel to position point of looper (A, Fig. 8) 1/64" (0.4mm) past
the left side of needle (B). At this time the top of the eye of the needle (B)
should be even with the under side of the looper (A). To make adjustment,
loosen screw (C Fig. 14) and move needle bar (A) up or down as required.
FEED DOG SETTINGS
Feed dog (A, Fig. 9) should be centered in throat plate (B)with equal
clearance on all sides and ends with feed travel set to desired stitch
length. At highest point of travel, tips of feed dog teeth should extend the
depth of 1 full tooth above throat plate. Screw (C) should be set to support
feed dog after screw (D) has been loosened which secures feed dog in
position.
When the feed dog is coming out of the throat plate, the top of the feed
dog should be level with the top of the throat plate. Adjustment can be
made by loosening nut (A, Fig. 10) and turn screw (B) clockwise to lower
front of feed dog, counterclockwise acts the reverse. When properly set,
retighten nut (A).
Right to left adjustment can be made by loosening screws (A, Fig. 11) and
slightly move feed rocker (B) on feed rocker shaft (C) as required, then
retighten screws. Check to ensure that feed rocker arm (D) does not bind
after adjustment.
Forward or rearward centering of feed dog can be accomplished by
loosening nut (E, Fig. 11), move feed rocker (B) as required and retighten
nut.
CHANGING STITCH LENGTH
Set the stitch to required length.This is accomplished by
loosening lock nut (F, Fig.11) 1/2 turn, (it has a left hand
thread) on the end of the stitch regulating stud and
turning stitch adjusting screw (G) located under the left
end of the cloth plate in the head of the mainshaft (H),
which is marked with “L” and “S”. Turning the screw in a
clockwise direction shortens the stitch (moves stitch
regulating stud toward the “S”) and turning it in a counterclockwise
direction lengthens the stitch (moves stitch regulator stud toward
the “L”). Retighten the lock nut securely. To prevent destructive
damage to the feed drive bearing, key screw (J) must engage the
“U” shaped key slot in ferrule (K).
The feed rocker assembly may require lubrication and repair after
years of operation. This can be accomplished as follows: Loosen
nut (E, Fig. 11) and remove nut (F). Remove feed rocker arm (D)
from machine by rocking s’lightly. Loosen screws (A) and remove
stop collar on right end of shaft (C). Shaft can now be withdrawn.
Loosen Allen screw (L) and remove shaft (P), Now repack bearings.
Fig 8
Fig 9
Fig 10