Question about 1998 Yamaha V Star Classic

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Need to know common causes of a Spun Bearing on 1998 Yamaha V-Star

We have a '98 V-Star recently purchased that suddenly spun a rod bearing after fifteen miles. It test drove fine. After 15 miles, however, It froze up the engine and we had to completely rebuild it. What might the cause of this be?

Posted by Anonymous on

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  • Yamaha Master
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Hi, Anonymous ouch !!!!!!!!!!!! that really sucks.This usually happens due to rod cap stretch during abusive driving situations. It can also happen due to a lack of lubrication, either because of a lack of oil or because oil is flowing incorrectly. It can also be caused by a combination of any (or all) of the three. For more information about your question and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
98 00 Yamaha XV650 Star Service Manual XVS650 Moto Data Project
OEM parts for Yamaha
http://www.starmotorcycles.com/assets/service/manuals/2003/LIT-11626-16-05_22.pdf
Yamaha XVS650 Drag Star Classic
Tips Tricks

Posted on Jun 06, 2016

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If replacing the piston pin bearing no splitting is needed. If replacing the crank pin bearing splitting is needed. You knew that I am sure but I had to clarify. The flywheel is held in place with one washer and a nut on the end of the crank. Timing is accomplished with a woodruff key on the shaft. Using a flywheel puller tool is the proper method. It is a simple and low cost tool and it sounds like you have enough knowledge of engines to need one now and in the future. In a worst case scenario, use a mallet, striking the flywheel on four points around the perimeter of the wheel and in an "outward" direction. With some luck the flywheel will pop loose.

When you are purchasing the flywheel puller, buy a case splitter also. Also reasonably low cost, it makes the splitting clean and easy. I strongly suggest you install new crank bearings and seals. Whatever caused the crank pin bearing to go bad did not do the crank main bearings any good either. I would hate to see you have to split the case again eight weeks from now.

How are you planning to separate the crank halves, re-assembly and truing of the crank? The dealer should do this part. I can't find a free repair manual on the web but the next best is a parts diagram. Go to the site below where you can see a parts diagram for your specific bike. You will select the actual brand, year, model, etc., once you go to the site. Part numbers and prices are also shown. You can order parts from this site. In the event no price is shown on a particular part, the part is not in stock.
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Top rating on this solution? Thanks!


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hello, i agree with johnnyraptor, i have a 2000 warrior, i t has done the same thing,except my bolts didnt break, my one way starter bearing sound like it was sorta dragging, then it would break free, sometimes it would start,then it would just spin, had to pull flywheele, race and bearing is bolted to backside of flywheel, thats the big hex head screws that you see, when looking at flywheele, when you pull stator cover, sounds like you need oneway bearing, make sure not to put on backwards, have seen it done.cheapcycleparts.com has them for about 50.00 to 75.00 dollars, warriors about 60.00 ,mine came from yamaha, 150.00. wish i had found this other place before i bought mine...

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overtightened or torqued harleys have simmuler problem too.!! it is importent to make sure the screw &nut adjustment.is perfect that means ajusting it first for slipage and then cabel !!! hope it helped

Posted on Jul 07, 2010

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