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(3) Adjusting the hook timing
The timing gauge is supplied for the machine as an accessory.
Needle bar/hook timing
adjustment position
Align the timing gauge with the
end surface of the needle bar.
Needle bar
connection
Lower dead point
of the needle bar
1)
Remove the throat plate. Place the timing gauge
on the hook driving shaft saddle. At first, adjust
the lower dead point of the needle bar.
Loosen the needle bar connection collar screws
(at two locations) at the top and bottom of the
needle bar connection respectively to adjust the
height of the needle bar. Then, tighten the nee-
dle bar connection collar setscrews.
After you have assembled the relevant parts,
check to make sure that there is no gap at the
top and bottom of the needle bar connection.
2)
Then, turn the timing gauge by 180 degrees of
an angle longitudinally. Adjust the hook timing
position.
Needle bar
connection
setscrew
– 37 –
Adjust the timing between the nee-
dle bar and the hook according to
the standard specification.
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