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  Yamaha C60 replacing water pump impeller

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Author Topic:   Yamaha C60 replacing water pump impeller
Binkster posted 04-08-2015 02:08 PM ET (US)   Profile for Binkster   Send Email to Binkster  
I plan on replacing the impeller on this new to me engine. I have experience on doing this job on old OMCs and Chryslers, but Yamahas are new to me. Anything special that I should be aware of. I have a manual.

rich

Binkster posted 04-12-2015 10:57 PM ET (US)     Profile for Binkster  Send Email to Binkster     
No help here, but I did find a Youtube video showing how to replace a water pump impeller on a similar, same year Yamaha. It turned out to be very easy.

rich

Eddie M posted 04-13-2015 12:56 PM ET (US)     Profile for Eddie M  Send Email to Eddie M     
All the Yamahas are basically the same and with the manual you dont have to take pictures. Once you have changed one they are a breeze including the four strokes. I found I had to use a manual for my friends Mercury tiller to get the linkage correct on assembly.
Binkster posted 04-15-2015 01:37 PM ET (US)     Profile for Binkster  Send Email to Binkster     
WOOPS, this job seemed very easy, maybe too easy, and now I have a problem. Before I removed the gearcase, I shifted the binnacle control into forward and never touched the shift shaft in the front top of the gearcase. I changed out the pump, and the gearcase was installed back onto the midsection without any problems. So I shifted it into neutral attached the hose and fired it up. It pumps plenty if water, but with the controls in neutral the prop is turning in reverse, and the engine is turning 2800 rpm.
So I take it all down again, and I find the shift shaft in the gearcase will turn easily enough from side to side, but the prop remains in reverse, and I can't even find neutral. This was not the case, before I unbolted the gearcase the first time. It shifted fine. What gives?

rich

MattInSanDiego posted 04-15-2015 03:55 PM ET (US)     Profile for MattInSanDiego  Send Email to MattInSanDiego     
Are you sure the shift shaft mounted to the lower unit correctly? The first time I did this job the shift shaft did not go into the lower unit receptacle. I buy all of my parts from simyamaha.com. They reply promptly to my questions and I bet they would be willing to help you. Their email address is andyjr@shipyardisland.com.
tedious posted 04-15-2015 04:26 PM ET (US)     Profile for tedious  Send Email to tedious     
Is the shifting the binnacle to forward the way it's supposed to be done, per the manual?

If the motor is also running 2800 RPM, it sounds like one or more cables has slipped out of a cable stop or something.

Eddie M posted 04-15-2015 09:39 PM ET (US)     Profile for Eddie M  Send Email to Eddie M     
Go to the trouble section of the manual. You can correct the mistake by a process of elimination.
Binkster posted 04-20-2015 12:36 PM ET (US)     Profile for Binkster  Send Email to Binkster     
Found the fix on an outboard repair column online. It was a simple adjustment of the shift shaft that took all of 5 minutes.

rich

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