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Discussion Starter #1
hello all,

I have gone through 2 flange coupling now on my ski. I have no idea why there are being eaten up and only give me about 30 min of riding before one breaks. I have looked at the blue prints and I have the motor mount spacers in the correct place which is in the front. but I cannot figure out why I am chewing them up any help would be very helpful!!!!

thanks
 

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I'm curious if the drive shaft had anything wrapped around it when you broke the coupler the first time? I think that's what broke one of my engine mounts which I just replaced and I'm worried that I may have damaged the coupler too. If the alignment isn't right you'll keep tearing them up too.
 

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Discussion Starter #3
I had to do a top end rebuild and replace one of the motor mounts cuz it broke, so in the process i had to remove the motor. When I assembled it back together, i blew the coupling, I know it has todo with the motor and impeller shaft being level. I guess what I am looking for is are the motor mount spacers (2) in the front of the ski or in the back or both on one side. When I looked up the placement again it clams that the spacers are in the front, something seems to be wrong, I have done nothing to he shaft nothing was caught in it etc. Any Ideas?

do you have a XL 1200?
 

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I have a 98 XL 1200. When you removed the motor, did you check the impeller and shaft if it rotated freely? Because the wear ring could be binding it.
 

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BTW ... the reason I'm on here is because I'm rebuilding my carbs. I want to replace the throttle shaft seals, but I'm not finding too many vendors who sell them. I also can't seem to find anything comprehensive on testing the fuel pump on the pulse side of the carb either. The skis are fun, but they're a money pit if you take them in for repairs.
 

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Discussion Starter #6
When i took the motor out, the impeller was also replaced, there was no damage to the shaft I dont believe and the place I took it to didnt say anything about the shaft being off. I did turn the impeller shaft to make sure it rotated freely, and I replaced the wear ring, and there are no problems. So I'm thinking that the motor mount spacers are in the wrong place and the front is not right.
 

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There's a procedure to align the flange coupling with a straight edge that seemed fairly simple ... I'll check the manual tonight. Are these Yamaha replacement couplings you're using or aftermarket?
 
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