First time poster to the Yamaha forum, I usually live over in the Evinrude/Johnson forum for some old antiques I have.
But I also have and love my old Yamaha 150 hpdi. Been a great motor for a long time. This issue happened a few months back and I'm just getting around to fixing it.
So what happened: I was running for about ~30 minutes at mid/high throttle, probably around 3.5K RPM's pulling tubers when I started hearing a whining sound from the motor. So I came back to idle neutral and could still hear the wine. I cut the key off and that's the last time it ran. Since then I've had no power trim/tilt and starter wouldn't run. To get back to the dock I had tow-boat US tow me, and to get the boat on the trailer I had to manually lift the motor with the bypass open.
While stile on the water, before the tow boat got to me, I removed the cowling and the flywheel cover. I found the starter bendix stuck in the flywheel. I'm not 100% certain that it was like this for the 30 minute ride, but I suspect it was and that was the source of the whining sound. I did however try the key several times after turning it off. Never heard the starter engage, but that's the only other possibility for the starter bendix being engaged with the fly wheel. It didn't take much, just a tap, to get the bendix disengaged.
Suspecting I had toasted the starter, I went ahead and bought a new aftermarket starter.
Any ideas on where I can start are greatly appreciated.
But I also have and love my old Yamaha 150 hpdi. Been a great motor for a long time. This issue happened a few months back and I'm just getting around to fixing it.
So what happened: I was running for about ~30 minutes at mid/high throttle, probably around 3.5K RPM's pulling tubers when I started hearing a whining sound from the motor. So I came back to idle neutral and could still hear the wine. I cut the key off and that's the last time it ran. Since then I've had no power trim/tilt and starter wouldn't run. To get back to the dock I had tow-boat US tow me, and to get the boat on the trailer I had to manually lift the motor with the bypass open.
While stile on the water, before the tow boat got to me, I removed the cowling and the flywheel cover. I found the starter bendix stuck in the flywheel. I'm not 100% certain that it was like this for the 30 minute ride, but I suspect it was and that was the source of the whining sound. I did however try the key several times after turning it off. Never heard the starter engage, but that's the only other possibility for the starter bendix being engaged with the fly wheel. It didn't take much, just a tap, to get the bendix disengaged.
Suspecting I had toasted the starter, I went ahead and bought a new aftermarket starter.
Any ideas on where I can start are greatly appreciated.