Down Shifting issue with 2010

[RadioHowie]

Update:

Getting the FJR back today as it has been in the shop for repairs with this issue.

It was determined that the shift shaft was bent slightly internally and quite rusty actually.

The Y.E.S. warranty is covering it 100%.

What in the world could cause a bent shift shaft?

I could be wrong, but my bet would be that the previous owner started getting the sticky shifter that you corrected. As it got worse, he prolly began jamming that thing down with his foot and eventually bent it.

I'm assuming it wasn't bent much since you didn't notice, but with no reference, I donno how much it could be bent without being obvious. Coulda been a drop that hit the shifter on something.

IF the op was forcing shifts, you could be looking at bent shift fork issues down the road, but for now, if it comes back fixed, ride the crap out of it and have fun.

Good luck, and I hope it's fixed.

What 'zilla said!

ALWAYS listen to what 'zilla says, 'cause he's only 72% full of crap. The other 28% is GOLD!

 

[rPGoatBoy]

I'd ask to see the old shift shaft, and put it on some v-blocks if you've got access to a set.

Something seems fishy, I don't think there's a way to bend it with your boot, at least the shaft portion. Maybe a motorcycle drop landed on something on the outside end of the shaft where the shift linkage attaches? Or perhaps the ratcheting mechanism on the other end got bent? It's stamped steel that's welded on.

And rusty? 90% of the shift shaft is inside of the engine's oily crankcase. Where and how would it rust unless it sat for a long time period (not running) in a humid environment with the crankcase open to atmosphere?

 

[jbretthorton]

I have seen the shaft and the end with the spring was rusty.

I have not verified that it indeed is bent, was told by tech, but any who, it is fixed!

This is the part:

https://www.partshark.com/fiche_section_detail.asp?section=4714217&category=Motorcycles&make=YAMAHA&year=2010&fveh=203614

Part number 13

 

[HotRodZilla]

That's not the part I was thinking of, but it's exterior and possibly bent by a drop. Maybe if someone stood it. Still, if it's fixed then something was outta place.

Of course, we're hoping my golden 28% is the important 28%. Lol...

 

[jbretthorton]

No, it is internal, goes through the case, behind the clutch basket

Thats why I was wondering how the heck it got bent..

 

[jbretthorton]

so yes, the shift shaft does exit the motor, thinking that is what you meant.

Just got her home and she shifts butter smooth up and down just like she should!

 

[900gc]

so yes, the shift shaft does exit the motor, thinking that is what you meant.Just got her home and she shifts butter smooth up and down just like she should!

Things that make you go "humm". Glad it's fixed. Me being the curious sort, I would want the part and run an indicator around it just because.

 

[jbretthorton]

The only thing we can think of is the bike had been dropped in the garage at one point (slight scratches in that direction) maybe the shift shaft hit something as it fell...

 

[Donal]

FWIW it is good practice to check al your pivot points when you first start the bike each day. For me this includes the clutch, front brake, rear brake and shift lever. Just squeeze/flick each one in turn. With daily use you soon become very used to what feels free and what is starting to become a problem and needs some tender loving care...........