Yamaha FZ 25 2021 - Front Wheel; Maintenance of the Wheel Sensor and Sensor Rotor; Removing the Front Wheel

4-8
CHAS
REMOVING THE FRONT WHEEL
1. Stand the vehicle on a level surface.
WARNING
Securely support the vehicle so that there
is no danger of it falling over.
2. Elevate:
• Front wheel
TIP
Place the vehicle on maintenance stand so that
the front wheel is elevated.
3. Remove:
• Front brake hose holder
• Front wheel sensor
• Front brake caliper
ECA20981
NOTICE
• Keep any type of magnets (including mag-
netic pick-up tools, magnetic screwdrivers,
etc.) away from the front wheel sensor or
front wheel sensor rotor; otherwise, the
sensor or rotor may be damaged, resulting
in improper performance of the ABS sys-
tem.
• Do not drop the front wheel sensor rotor or
subject it to shocks.
• If any solvent gets on the front wheel sen-
sor rotor, wipe it off immediately.
ECA21700
NOTICE
Do not apply the brake lever when removing
the brake calipers.
4. Remove:
• Front wheel axle nut
• Washer
• Front wheel axle
• Front wheel
• Collars
EAS31151
MAINTENANCE OF THE WHEEL SENSOR
AND SENSOR ROTOR
ECA21070
NOTICE
• Handle the ABS components with care
since they have been accurately adjusted.
Keep them away from dirt and do not sub-
ject them to shocks.
• The wheel sensor cannot be disassembled.
Do not attempt to disassemble it. If faulty,
replace with a new one.
• Keep any type of magnets (including mag-
netic pick-up tools, magnetic screwdrivers,
etc.) away from the wheel sensor or wheel
sensor rotor.
• Do not drop or shock the wheel sensor or
the wheel sensor rotor.
1. Check:
• Wheel sensor “1”
Cracks/bends/distortion  Replace.
Iron powder/dust  Clean.
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 limit
Out of specification  Clean the installation
surface of the wheel sensor rotor and correct
the wheel sensor rotor runout limit, or replace
the wheel sensor rotor.
1
FRONT WHEEL
B9X-F8197-E0.book Page 8 Thursday, July 16, 2020 2:28 PM