posted 07-16-2007 08:47 PM ET (US)
Cable adjustments are typically done at the engine side.Start with the control in neutral, no fast idle advance in the throttle, cables connected to the control.
At the engine, determine which cable is throttle and shift. Shift cable is usually 1/2 way out, throttle will be all the way out or all the way in- this is at the cable ends. Disconnect both cables from the engine.
Move the control to forward and reverse, and take note at what the cables do at the engine- forward, neutral and reverse. Cables will be fully extended, all the way in, or in between at various shift lever positions.
When adjusting a shift cable, make sure the lower unit is in neutral. Spin the prop to be sure, it should spin free.
Place the cable end on the engine shift shaft attachment, then see where the cable adjustment "nut" lines up with the cable attachment point on the engine. I adjust the nut on the cable so it is centered on the engine attachment point. The cable has a bit of play, so grab the cable and move it back and forth when centering it. Adjustment nut on the cable should slide in nice to the engine attachment point when the lower unit is in neutral.
Throttle cable- when in neutral, the throttle cable should close the plates on the carbs completely. Adjust the throttle cable so they close snug, and any play in the cable does not allow the throttle to open a bit.
Usually does the trick on any outboard I have rigged up.
Did you use Mercury cables or an aftermarket cable (teleflex. etc.) I have had best luck with original equipment vs aftermarket.
Rich