Backed away from the dock and went to go forward. No forward gear. Motor just revved up. I had worked on the fuel lines a couple of days earlier and had moved the air silencer from the front of the carburetor without detaching the throttle and gear linkages. Finally adjusted the linkage and got forward gear back......but lost the reverse gear. Finally limped back to the dock and took the boat out. The next day, I worked on the motor and tightened down the cable holding clamp. I think I've got both gears back now...at least out of water. Haven't taken it back out yet. Any suggestions if I still have problems? 