I have a 60 hp 2 stroke mercury big foot, year 2003. When I first put it in the water just last week it took awhile to get it started, but after it did it ran good for the afternoon, even after stopping to swim for a hour or so it started right up. Two days later same issue of starting only did not start until a guy at the landing who is a small engine mechanic said it sounded like a choke issue. As I turned it over he played with the throttle linkage and it started up. He said by jerking the throttle linkage at the engine it was able to choke and start. No problems starting the rest of the afternoon. My question is how do I fix this, it cant be too technical but maybe will be. My choke operates by pushing in on the key as it is turned over. I appreciate any suggestions. Terry