Riders Of Vision

General => TechTalk => Topic started by: DBVision510 on July 09, 2020, 11:13:58 PM

Title: Flywheel woodruff key replacement
Post by: DBVision510 on July 09, 2020, 11:13:58 PM
Anybody out there in Visionland ever had to replace the woodruff key that fits under the flywheel? Yamaha isn't selling the part # specified in the parts diagram, but is there another part # that'll work?

I swapped my motor and the new unit needed a flywheel, but the flywheel that's on the old motor seems to be very stuck. Decided to order a new starter clutch and flywheel, but I'm a little lost on the woodruff key.
Title: Re: Flywheel woodruff key replacement
Post by: injuhneer on July 10, 2020, 01:12:51 AM
That does seem like a part that is likely to have been used on multiple bikes.

How stuck is the other flywheel?
Title: Re: Flywheel woodruff key replacement
Post by: fret not on July 10, 2020, 02:11:39 AM
Somewhere in the cobwebs and dust there should be a discussion about removing the flywheel.  I recall the consensus was that you need a BIG hammer.   That approach worked for me.  Regarding the woodruf key, it is a piece of metal.  If nothing else it could be made by refitting a slightly larger one to the keyway.  A diamond stone and some time, but it could be done.
Title: Re: Flywheel woodruff key replacement
Post by: The Prophet of Doom on July 10, 2020, 07:22:31 AM
I don't have one out to measure, but there are imperial and metric standards for Woodruff keys and it's likely the XZ will conform to the metric ones.
Just measure the width (in metric ! ) and head off to your local Woodruff key shoppe. 


There are only a couple or three dimensions for each width and they are cheap.
Title: Re: Flywheel woodruff key replacement
Post by: MikeScoot on July 10, 2020, 03:41:44 PM
Best bet would be to persist in getting th other on off. The right puller is one half the trick and that big hammer (mentioned above) is the other. Be very careful to do this in a place where you can easily catch the small bits that will fall out when it comes loose.

Otherwise another option would be to check any local engine rebuilding workshops to see whether they have a key, or simply make one. Making one that would ensure correct alignment of the flywheel would not be difficult.