Place the presser-lifting eccentric (figure
4-10B) onto the arm shaft with the small end
toward the face of the machine. At this time, slide
the presser-lifting eccentric toward the face until
it goes inside the connecting link.
Feed Indicator Disc
The feed indicator disc is placed on the arm
shaft, through the opening in the top of the
machine arm, so that the numbers on the disc may
be read right side up. Push the arm shaft through
the disc about 1 inch.
Arm Shaft Pulley and Arm
Shaft Connection Belt
The arm shaft connection belt acts as a sling
for the arm shaft pulley. Use the belt and lower
the pulley through the opening in the top of the
machine arm. Now turn the belt, while aligning
the pulley with the arm shaft, and insert the shaft
through the pulley. Be sure you push the shaft
through as far as it will go.
Arm Shaft Connection
Belt Pulley Position Screw
To replace the arm shaft connection belt
pulley position screw, you hold the arm shaft in
position with the left hand and move the arm shaft
pulley to the left. Turn the arm shaft until the hole
is facing up. Now turn the pulley until the hole
for the position screw is facing up. Move the
pulley to the right, aligning the two holes, and
insert the position screw. Tighten the remaining
setscrew in the pulley.
Before you replace the balance wheel, turn the
arm shaft until the groove in the shaft is facing
upward. Place the balance wheel on the arm shaft.
Now turn the wheel toward the operator until the
second screw is directly in line with the groove.
Tighten the screw in place. Tighten the remain-
Balance Wheel Adjusting Screw
Place the balance wheel adjusting screw in the
end of the arm shaft and tighten it. Loosen it one-
quarter turn and strike it with a sharp blow
using a rawhide mallet. See that the balance wheel
turns freely and that there is no play. If the
balance wheel does not turn, or if it turns and
there is side-to-side play, repeat the procedure.
This balance wheel is made of cast iron
or aluminum and will break if you hit it
directly with the mallet.
If the screw can be removed by using your
thumb and forefinger, it will be necessary to
spread the end of the screw. To do this, remove
the screw and spread the end of it with a
screwdriver. Replace the screw and run it down
until it touches the balance wheel. It should then
be tightened snugly when you try to remove it with
Alternating Presser Driving Rockshaft
Slide the rockshaft into the rear of the machine
through the two bushings. Attach the presser-
lifting link crank to the link projecting from the
arm. Continue sliding the rockshaft through the
crank. Set the machine on its balance wheel end.
Install the bell crank link on the rockshaft stud
(oil holes up). Install the oil guard into the face
at this time.
Needlebar Connecting Link
Turn the balance wheel until the needlebar
connecting link stud is at its lowest position. Grasp
the needlebar connecting link so that the double
cylinders are up. Place the larger of the two
cylinders over the needlebar connecting link stud,
and ensure that the flush end of the cylinders are
Take-up Lever Driving Stud
Place the cylinder of the take-up lever
driving stud over the piston of the take-up lever.
Grasp the take-up lever with the piston of the
take-up lever driving stud and the cylinder of the
take-up lever facing the face of the machine. Fit
the lever into the slot designed for its operation;
at the same time insert the take-up lever driving
stud into the remaining cylinder of the needlebar