Mercury 40 4-Stroke Manual page 87

OUTBOARD INSTALLATION
1. Position the remote control into neutral.
2. Fit the throttle cable through the rubber grommet.
a - Rubber grommet
3. Attach the throttle cable to the throttle lever with a cotter pin retainer.
4. Adjust cable barrel until the barrel slips onto the mounting stud.
N
a
b
81
26838
28491
b - Throttle cable