Denso VS-G Series Installation & Maintenance Manual page 84

Set the CALSET bolt to the end of the 3rd axis housing as shown in the figure
STEP 4
below.
Tightening torque of the CALSET bolt: 2.9 Nm ±20%
NOTE: Be sure to use the CALSET bolt as a CALSET jig. Using any
other bolt will result in a positional error in CALSET.
TIP: The CALSET position of the 4th axis refers to the point where the
notch of the second arm comes into contact with the head of the
CALSET bolt by turning the second arm.
Mounting the CALSET Bolt (VS-G series)
66