I'll give ya a hint. It's the business end of the lil plastic handle incorporated in the throttle control that you pull up on to shift out of neutral.
Shoved away from the dock today, went to put her in fwd, & it snapped off under my fingers. Hmm. What to do now. Discovered that by pinching & pulling up on the remaining stub it'd still allow you to shift gears. So we went for it! Heh heh
Not to worry I gotta backup control box around here, somewhere ...