Originally Posted by
spanky76
Thanks for all the info guys. I pulled the carbs and found trash in the lower carb. I cleaned everything (per everyone's suggestions) and replaced spark plugs and the motor sounds ALOT better. As far as the carb adjustment srews my carbs have a brass looking cap over them that I can't remove to get to the screws. Any ideas how to get these caps off without tearing them up would be greatly appreciated. Thanks again.
If they were Merc carbs I could tell you how to remove the plugs. But I've never worked on Yamaha carbs (except motorcycles) and I don't want to mess you up. Bottom line is if you remove them you will have to put new ones in but don't put them in until you are sure the jets are adjusted properly. BTW the motor will run just fine without the plugs. At least Mercs will.
Fair Winds and Following Seas
Bill H. PTC USN Ret
Chesapeake, Va