Mercury motorguide R3-30 Manual page 22

TROLLING MOTOR INSTALLATION AND OPERATION
Rotate the twist‑tiller handle clockwise for forward movement and
counterclockwise for reverse movement. The "off" handle position stops
the motor.
c
a - Forward speed control (five speeds clockwise)
b - Off
c - Reverse speed control (two speeds counterclockwise)
b
45083
18
a