JUKI PS-800-8045 Instruction Manual page 16

(3) Adjusting the hook timing
The timing gauge is supplied for the machine as an accessory.
Lower dead point
of the needle
bar of the S type
sewing machine
Position for adjusting the
timing between the hook
and the needle bar of the
H type sewing machine
Loosen needle bar connection
setscrew. Adjust the height of
the needle bar.
Needle bar connection setscrew
Position for adjusting the
timing between the hook
and the needle bar of the
S type sewing machine
Lower dead point
of the needle bar of
the H type sewing
machine
– 13 –
Adjust the hook timing according to
the sewing type (S type / H type) of
the sewing machine.
Turn the timing gauge upside down
according to the sewing machine
type as shown in the figure on the
left.
For the S type :
For the H type :
1) Put the timing gauge on the resin cover. Then,
adjust the lower dead point of the needle bar first.
2) Then, turn the timing gauge by 180 degrees of an
angle longitudinally. Adjust the hook timing posi-
tion.
When adjusting the hook timing, it is necessary to
put the jig on the left side of the needle to prevent
the jig from coming in contact with the needle bar
thread guide.
Align the timing gauge with the end
surface of the needle bar.
Position the timing gauge
with its S inscription
turned up
Position the timing gauge
with its H inscription
turned up