Honda CB 300R 2020 Owner's Manual page 120

Tire Puncture
u
Remove the rear axle shaft, side collars,
5.
axle washer and rear wheel.
Support the brake caliper assembly so
u
that it doesn't hang from the brake
hose. Do not twist the brake hose.
Avoid getting grease, oil, or dirt on the
u
disc or pad surfaces.
Do not push the brake pedal while the
u
brake caliper is removed.
116
Removing Wheels
Installation
Attach the right and left side collars in
1.
their original locations on the wheel.
To install the rear wheel, reverse the
2.
removal procedure.
Take care to prevent the brake caliper
u
from scratching the wheel during
installation.
NOTICE
When installing a wheel or caliper into original
position, carefully fit the brake disc between the
pads to avoid scratching them.