I have a single 2000 Yamaha 225 OX66 transom-mounted on a 25MVSC. The control is the OEM Yamaha 704 single lever. During the 2004 Season my WOT was at ~ 5400 rpm. During the 2005 Season my throttle travel maxed out at only ~4900. I’m sure the engine had more to go, but my control handle was at the travel limit (hitting the dash).
When I quizzed the Yamaha Service Tech during my winterization visit, he explained that there are no throttle adjustments that can be made to bring me back up to higher RPMs and it’s a cable-travel issue. He claimed the cable is stretched and needs to be replaced.
I gotta believe there are some threaded-rod linkage adjustments that could be made to squeeze that extra 500 RPM back out (maybe just a single thread rotation?) without replacing the whole Teleflex cable.
But I really don’t want to just go in there and start messing with linkages and adjustments. Engine is otherwise in top shape (compression excellent etc.) and there is no other apparent reason that I lost the top 500 rpm
What's the verdict? Is throttle cable "stretch" a real possibility, or am I getting conned?
When I quizzed the Yamaha Service Tech during my winterization visit, he explained that there are no throttle adjustments that can be made to bring me back up to higher RPMs and it’s a cable-travel issue. He claimed the cable is stretched and needs to be replaced.
I gotta believe there are some threaded-rod linkage adjustments that could be made to squeeze that extra 500 RPM back out (maybe just a single thread rotation?) without replacing the whole Teleflex cable.
But I really don’t want to just go in there and start messing with linkages and adjustments. Engine is otherwise in top shape (compression excellent etc.) and there is no other apparent reason that I lost the top 500 rpm
What's the verdict? Is throttle cable "stretch" a real possibility, or am I getting conned?