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CB650R Loud/clunky shifts, getting stuck in neutral

irsidewinder

2019
CB650R
Dec 23, 2019
I've seen a thread or two about the gearbox on the 650s being a little choosey about shifting technique, and I've definitely been having issues.

Let me preface this by saying that I'm an inexperienced rider and the only bike I've ridden apart from my 2019 CB650R was a Kawasaki ER6N with a gearbox that felt like it was filled with chowder by comparison. Never had any issues on that bike though.

I've been having a lot of hard shifts, clunks, and gear lever getting stuck half-way's.
I've made a habit of slightly preloading the shifter, then really giving it a good push all the way up once I feel the clutch disengage. This definitely helped, but I'm still having a hard time getting it consistent. Two-finger clutching also helped, but I can't pull it off with the stock lever without squishing my two remaining knuckles every time.
I know for a fact that my technique is still bad, when not paying attention I tend to release the clutch too quickly and I can physically hear the dog gears banging back and forth into each other as the transmission rapidly switches from engine braking back to powering the rear wheel in a split second.

But the one issue I can't find an explanation for is the amount of times I get stuck in neutral going from first to second. It happens almost every day, and it's definitely not due to a lazy shift. I'll push the lever all the way up, full-stop, very deliberately (because I'm already expecting it) and while most of the time it will go into second, other times it just won't go past neutral. There's a hard stop and it will only go into second with a bang (similar to going from neutral to first at a stop) after releasing the lever and re-trying.
After a few dozen embarrassing accidental rev-bombs, shifting from first to second now is something I find myself being constantly mindful of, which just isn't very fun.

Has anyone else been having this kind of issue?
Is there some trick or technique I'm missing? I'm beginning to worry that my rough-beginner-shifting may have damaged my gearbox.
 

Brammers

2014
CBR650F ABS
Staff
May 30, 2014
Hampshire, England
Riding Since
1993
I used to have issues. Then I did three things...

1) adjusted the gear lever height. We have a pinned thread for it.
2) got adjustable levers so I could get the bite point where I wanted it, which allowed me to...
3) adjust the clutch freeplay to minimum recommended (10mm)

After that, no worries at all.

Other things can help...

A)adjust throttle freeplay to minimum (3mm)
B) check chain slack is OK (about 30mm)

Hth
J
 

irsidewinder

2019
CB650R
Dec 23, 2019
I used to have issues. Then I did three things...

1) adjusted the gear lever height. We have a pinned thread for it.
2) got adjustable levers so I could get the bite point where I wanted it, which allowed me to...
3) adjust the clutch freeplay to minimum recommended (10mm)
Thanks, I've already adjusted my shift lever and clutch freeplay, adjustable levers are in the mail as well. I still don't understand how the bike sometimes refuses to go through neutral to second though, that's the part that really bothers me and I don't think it's caused by the clutch or shift lever, since it happens even when I'm very careful and deliberate about it. On the other hand, being slow and deliberate may be what's causing it in the first place, at this point I just don't trust it so I'm always spending at least half a second glancing down and looking for the neutral light before I complete the shift.
 

Brammers

2014
CBR650F ABS
Staff
May 30, 2014
Hampshire, England
Riding Since
1993
Chain slack... When you unload the transmission the slack in the chain can cause the output shaft to slow/stop for a split second... Enough to make gear changes hard.

Making the slack right helps reduce that.

J
 

irsidewinder

2019
CB650R
Dec 23, 2019
Chain slack... When you unload the transmission the slack in the chain can cause the output shaft to slow/stop for a split second... Enough to make gear changes hard.

Making the slack right helps reduce that.

J
That makes sense. I'll check that right away.
 

Atucker

2019
CBR650R
Aug 18, 2020
Riding Since
2001
I have a 2019 as well and have the same issues. Adjusting the lever helped some, but I still get stuck in "--" occasionally. I'm far from a beginner as I've been riding nearly all my life and have never had the issues I have with the CBR650. There are times were it feels subtle like it could have been related to rider or technique, but again, never had a single issue on any other bike. I'm convinced there's more to it, but have yet to pinpoint what's going on. I've called Honda a few times, but have had no luck whatsoever.
 

irsidewinder

2019
CB650R
Dec 23, 2019
I have a 2019 as well and have the same issues. Adjusting the lever helped some, but I still get stuck in "--" occasionally. I'm far from a beginner as I've been riding nearly all my life and have never had the issues I have with the CBR650. There are times were it feels subtle like it could have been related to rider or technique, but again, never had a single issue on any other bike. I'm convinced there's more to it, but have yet to pinpoint what's going on. I've called Honda a few times, but have had no luck whatsoever.
Yeah, I saw your post about your bike randomly falling out of gear. That hasn't happened to me yet, but sounded alarming enough... has that stopped happening to you?
It's all very inconsistent and confusing for me, a slight change in technique will work wonders on one day and do nothing the next. I'm still convinced I'll get used to it eventually, but while it took me about 15 minutes to get used to the ER6N's gearbox, it's been about 6 months on the cb650r and I still can't get it right. I'm going to check my chain slack, shift lever adjustment and clutch freeplay again, I've also ordered an adjustable clutch lever and the RaceTorx shifter support, hopefully that helps.
 

Atucker

2019
CBR650R
Aug 18, 2020
Riding Since
2001
I haven't had any further instances of it falling out of gear, but still get the "--" occasionally. Probably once every 300-500 miles which in my case is at least once every 3 weeks or so.
 

Rafe

2019
CBR650R ABS
Oct 1, 2019
United Kingdom
I did all three things that Brammers @Brammers has mentioned above and I can't remember the last time I had gearbox issues.

I can't tell you what a difference it made just adjusting the selector into a better position for my boots. Mine was far too high from the factory so once adjusted lower, you don't have to raise your ankle as far up to shift which means you can be more positive.

Once you have all those things in check, chain slack adjusted etc, then you should feel a big difference.
 

miweber929

2014
CBR650F
650 Alumnus
Staff
Feb 13, 2015
Woodbury, MN
Riding Since
1975
I did all three things that Brammers @Brammers has mentioned above and I can't remember the last time I had gearbox issues.

I can't tell you what a difference it made just adjusting the selector into a better position for my boots. Mine was far too high from the factory so once adjusted lower, you don't have to raise your ankle as far up to shift which means you can be more positive.

Once you have all those things in check, chain slack adjusted etc, then you should feel a big difference.
My Ducati was the same as the 650, once I adjusted it, much better shifting.
 

irsidewinder

2019
CB650R
Dec 23, 2019
Btw, in case anyone else having transmission issues stumbles through here, I swapped my clutch lever for an adjustable one and adjusted the freeplay to the minimum (just over 10mm) and it's made a huge difference. I still sometimes get a notchy feel from the shift lever going from first to second, but it's a lot better now. Next up: RaceTorx shifter support and slightly tightening the chain.
 

Goblin

2019
CB650R ABS
Sep 2, 2019
Also got the RaceTorx Shifter support. It did make a noticeable difference. Also adjust the gear lever height and chain slack. Adjustable levers will help with the free play/bite point. Ps a to tight chain will cause a slow gear enchantment, to much slack will cause for a clunky and inaccurate shifting gearbox.
 

n3xus

2020
CB650R
Jul 16, 2021
Riding Since
2018
I also got a shift support and it fixed my problem. My bike would occasionally go into neutral going from 1st to 2nd. With the support installed, it hasnt happened again.The gear changes feel more pronounced.

I didnt want to spend so much on the racetorx one, so I bought this eBay one for 25 bucks. Its great quality, I recommend it.

 

Atucker

2019
CBR650R
Aug 18, 2020
Riding Since
2001
@ N n3xus - did the one in the link you posted fit without issue? When I select the 2019 CBR650R it states its not compatible.
 
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