Yamaha R15 2022 Service Manual page 162

1. Check:
• Wheel sensor "1"
Cracks/bends/distortion → Replace.
Iron powder/dust → Clean.
1 1
2. Check:
• Wheel sensor rotor "1"
Cracks/damage/scratches → Replace the
wheel sensor rotor.
Iron powder/dust/solvent → Clean.
TIP
• The wheel sensor rotor is installed on the inner
side of the wheel hub.
• When cleaning the wheel sensor rotor, be
careful not to damage the surface of the sensor
rotor.
3. Measure:
• Wheel sensor rotor runout
Out of specification → Clean the installation
surface of the wheel sensor rotor and correct
the wheel sensor rotor runout, or replace the
wheel sensor rotor.
Wheel sensor rotor runout limit
0.25 mm (0.0098 in)
a. Hold the dial gauge at a right angle against
the wheel sensor rotor surface.
b. Measure the wheel sensor rotor runout.
FRONT WHEEL
TIP
Do not touch the surface of the wheel sensor ro-
tor with a sharp object.
c. If the runout is above specification, re-
move the sensor rotor from the wheel, ro-
1
tate it by one or two bolt holes, and then
install it.
ECA18100
Replace the wheel sensor rotor bolts with
new ones.
d. If the runout is still above specification, re-
place the wheel sensor rotor.
TIP
• Install the wheel sensor rotor with the stamped
mark "a" facing outward.
• Use "Torx bit T-25" for opening/tightening
wheel sensor rotor bolt.
4-17
CHAS
Front wheel sensor rotor bolt
8 N·m (0.8 kgf·m, 5.9 lb·ft)
LOCTITE®