Honda Super Cub 2019 Manual page 92

Brakes Adjusting the Brake Light Switch
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Adjusting the Brake Light
Switch
Check the operation of the brake light switch.
Hold the brake light switch and turn the
adjusting nut in the direction A if the switch
operates too late, or turn the nut in the
direction B if the switch operates too soon.
Brake light switch
B A
Adjusting nut
90