Brief message to say thank you to TimC2520 and CP website. I feel obligated as the information & help provided was huge. I have a Yamaha 225 OX66 and was not able to get the high end RPM's like I read about with others getting the higher speeds. Long story short, did a lot of searching/reading on this site about OX66 maintenance and TC2520 provided some hugely helpful maintenance tips, directions, diagnosis etc. Without going into the detailed troubleshooting and maintenance work, the problem was my 5th cylinder not firing and a clean plug - turns out with examination of the fuel rail and injectors, my 5th fuel injector clip was not fully clamped and the result was no fuel at the 5th cylinder. Phew... On a choppy, windy Sunday last week, was able to get to 5000 at 32 mph and with inspection afterwards, a firing 5th plug. Hope to get better performance after having my prop reconditioned this offseason.
Huge thank you TimC2520 and CP.
Huge thank you TimC2520 and CP.