Suzuki GSF650A Service Manual page 530

4E-43 ABS:
Step
3 1) Inspect both wheel speed sensor rotors for damage and
check that no foreign objects are caught in the rotor
openings.
Are the rotors OK?
4 1) Inspect the clearances of the front and rear wheel speed
sensor – sensor rotor using the thickness gauge.
Special tool
(A): 09900–20803 (Thickness gauge)
(B): 09900–20806 (Thickness gauge)
Wheel speed sensor – sensor rotor clearance
0.3 – 1.5 mm (0.012 – 0.059 in)
Are the clearances OK?
Action
Front
(A), (B)
Rear
(A), (B)
Yes
Go to Step 4.
I718H1450064-01
Replace the ABS
control unit/HU.
I717H2450009-01
I717H2450011-01
No
Clean or replace the
rotor.
Adjust the clearance.