Hi,i placed this question in another section but i think it should of gone in here..so here goes!it is probably something simple BUT can i find what it does..NO.<br />I have a force 50hp(1989) and the remote has US MARINE stamped on it,i've sussed out that the rocker switch on throttle/gear lever must be for either trim or engine lift(i have neither as mine are manual adjustment),below the key/ignition and next to the cut-out switch is a knob which rotates but tightens in either direction after afew turns,i am able to take it off and i can see that inside it sits over a bolt head but what does it do and what is it adjusting, i have a seloc manual but no ref to this is mentioned, sorry if i am sounding thick but i have just upgraded myself from owning a 12ft clinker being pushed by an old yam 8hp on tiller to an 15ft chrysler striper with a 50hp so some help is needed please.