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Singer 471U - Page 53

Singer 471U
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U]
Clutch
and
brake
adjustment
Improper clutch and brake adjustment may prevent the machine from starting, and may increase the shock
absorbed by the machine when it isstopped. In all cases, improperadjustment willadversely effect the machine's
durability
and
service life.
I.
Clutch
stopper
and
stop
cam
adjustment
2
mm
0
Loosen the bolt O and two Allen bolts movethe stop leverclaw0 and clutch clawO to adjust thestop
cam O to clutch stopper 0 gap to 2.0 mm when the machine is operating at slow speed.
* Place a gauge in between the stop cam 0 and clutch stopper 0 to simplify adjustments.
Clutch return spring adjustment
Loosen set screw 0 and adjust the angle of the
spring adjustment plate 0 so that the clutch return
spring 0 willbe as weakas possibleand so that the
clutch stopper will fit into the stopper cam.
Standard
angle is 45°.
3.
Stopper
spring adjustment
Loosen nut 0 and turn nut 0 to adjust the gap
between the
bottom
end
of
the
stopper
spring shaft
0 and nut 0 to 1.0 mm.
-51
-
y
1
mm
From the library of: Superior Sewing Machine & Supply LLC

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