Honda TRX250TE 2019 Owner's Manual page 161

Brakelight Switch Adjustment
Refer to Safety Precautions on page 97.
Rear Brake Only:
Check the operation of the rear brakelight switch (1) at the right side
behind the engine from time to time. Adjustment is done by turning
the adjusting nut (2). Turn the nut in direction (A) if the switch
operates too late and in direction (B) if the switch operates too soon.
RIGHT SIDE
(1) brakelight switch
(A)
(B)
(2) adjusting nut
Servicing Your Honda
Brakes
(2)
(1)
151