Hello I am here on behalf of my brother. He is not real good with posting questions in the forums and such, so I am posting this for him in the hopes I may help. He has a 1998 yamaha 40 hp outboard motor and has been having some problems. The motor starts fine and idles terrific, once the boat gets going and he accelerates to full speed he is good for about 2 mins and then the motor begind to slow down gradually untill it is almost stopped moving. The only thing that works is to shut the engine off and then start it up again and do it all over. Any ideas guys or advice would be great. I can get more specifics on the engine if needed. Thanks in advance
shaughnny
shaughnny