Ben
I have a 2001 7.4 Gi and I find the throttle cable is very stiff.  It's almost like the the throttle is  "on" or "off".  It is very difficult to "feather" throttle and maintain a nice cruising speed. The boat is fairly new to me so I have not had time to check this out.  I intend on removing the cable from the throttle boddy and trying it to see if that removes restriction so I will know if the problem is cable forward or back. I did notice that there is a pretty funky linkage at the throttle body that could be binding also.  I think you need to just start playing around until you have isolated the problem.  I would think that a good shot of jigaloo or pb blaster wouldn't hurt though!
230 Mike wrote:
Are you sure it needs it? Maybe the tension in the shifter needs adjusted?
Mike,
Is there some kind of spring in the back of the shifter? I guess I may have to pull the shifter off and look at it if the cable appears to be bad. Do you have an exploded view available?