Got a Yamaha 90hp 97 mod used a few years ago. It runs rough at low end
through mid range. Last two seasons I have taken it to a shop where the
mechanic soaks the carburators. Guy says that it is a mystery to him that it
keeps doing it and says he has never had one act quite like this before. He
has been out on a water test and says it sounds like it is dropping one of
the cylinders. I see on the Yamaha home site that there are carburator
repair kits available. Are there any Yamaha mechanics on here that think a
repair kit for each of the three carburators is going to accomplish any more
than soaking the carbs? Thanks for any advise. NV