B650 - stopper bolt required check

[Dave Weller]

They are fitted to the L0's, must have changed it on the revision including new dash.
I have looked at 3 bikes now and all the Bolts were in good condition, I think that the bolt will only wear, when the primary bearing has movement in it, so they will be fine for the life of that bearing.
A lot of wear on the stopper bolt, may be an indication that the transmission has a worn primary drum bearing and it may be time to get rid.
If I was buying a second hand bike knowing what I do, I would change the bolt (£5), then monitor it for wear for a while.
I've just done 750 miles over the weekend and can honestly say it up there as one of the best tourer's.
Only a few bikes have given any problems at all, so don't worry unnecessarily about it. They can run forever, same as any other mechanical machines.

[bornagainbiker]

They are fitted to the L0's, must have changed it on the revision including new dash.

Dave, I thought the new dash was introduced on the L1 models?
My local m\c shop has advertised an L0 model, 11 reg and it does not have the new dash?

[Maxman]

They are fitted to the L0's, must have changed it on the revision including new dash.

Dave, I thought the new dash was introduced on the L1 models?
My local m\c shop has advertised an L0 model, 11 reg and it does not have the new dash?

Me too.

[Maxman]

Just a thought on the stopper bolt. Excuse the waffle, I know what I mean.

If the mating surface has eaten into the bolt (which often seems to be in just one quadrant, & seeing Le dudes pics sort of explains why) & if it is still embedded in this position when the pulley is locked to allow the bolts removal, could more damage be done to the whole circumference of the bolt simply by unscrewing it?

And, more importantly, will the same damage be done to the new bolt simply by screwing it into a pulley that is now locked slightly out of position due to the wear on the original bolt.

No doubt someone will shoot my theory down, but it's just a thought.

[poldark]

Undoing it to inspect doesn't harm as the engine isn't running, the damage is caused by the rotation and contact against the bolt under load.

[Maxman]

Yep, I know that's what causes the damage originally.
I'm talking about possibly doing more damage by unscrewing a bolt that may have something embedded in it. ie the mating point on the pulley.

[Dave Weller]

All good points Les, we looked at the thread, and it can only finish up at the same point, from what I've studied, the problem has been blown out of all proportion, only very few Burgmans have had any problem at all. The stopper bolt could be a handy way of monitoring any wear on the primary drum bearing, ie. it could be the bearing causing the rattling of the drum, and wear on the bolt,
BTW, The CVT is a sealed unit and contains no oil.

[Maxman]

Agree with what you say about blown up out of all proportion Dave. 50 people hear the same story & it becomes 50 different stories.
Also agree the thread can only finish up at the same point. just that you could be screwing/unscrewing the bolt while it's possibly still jammed against something hard.