Brother GT-3 Series Service Manual page 177

6. Replacing Parts
D. Adjusting the Front/Rear Position of the Maintenance Unit
Use the Maintenance Unit Check Gauge.
1.
Rotate the CL Drive Cam (1) with a finger and move the Cap Rubbers (2) to the down position.
(1)
2.
Set the Maintenance Unit Check Gauge (3) on the Shaft (4) and the Frame (5) under the Belt. Cross the
Check Gauge and the Shaft at right angles (perpendicularly).
(5)
168
(2)
(1)
Maintenance Unit
(4)
GT-3 Series
(3)