07 ZX6R possible transmission issue

jet6r · Sep 10, 2020

Hi,

Was riding the bike yesterday with no issues when it started moving in to neutral from third gear during a downshift. Downshifted from 3rd and it went in to neutral, shifter was stuck down and had to let go of the clutch then re-clutch and force the bike in to gear. Forcing the shifter up would get the bike in to second gear and forcing down gets the bike in to first gear. Crunching can be heard and felt each time it is forced. Occasionally gets stuck in neutral when upshifting from second to third.

I've had a lot of opinions from mates ranging from a possible fix to new engine.

I know the transmission isn't too hard to access on this bike. Possible selector issue? The bike does not pop out of gear on its own.

Also, did an oil and oil filter change the day before and tightened the clutch lever which was somewhat loose. Chain tension is good.

Diagnosis? Repair?

RJ2112 · Sep 10, 2020

Lubricate the shifter linkage, to ensure it's not hanging up.....

riverszzr · Sep 10, 2020

remove shifter, bolt and washers........... clean and lube thoroughly then reinstall and make sure it is all adjusted properly to fit your body..........

Sounds like lack of maintenance has the shifter sticking and you "force the bike in gear" is what has caused the grinding...... stop casuing the grinding!! that isn't good for the forks, the drum nor the gears

jet6r · Sep 10, 2020

Okay going to clean and lubricate it today. See if that solves it.

jet6r · Sep 11, 2020

Nope. Its definitely not the shifter. Cleaned and lubricated the joints and and tightened the bolt according to the manual and still not behaving between lower gears.

riverszzr · Sep 11, 2020

Is the shifter pedal still sticking down and up?

Sounds like you are going to have to pull the clutch cover and look closely at the shifter shaft and shift star and associated parts and if not there move on to looking at the shift drum, shift forks and the transmission gears themself.....

How many miles on the bike and how long have you owned it?

jet6r · Mar 9, 2021

riverszzr said:
Is the shifter pedal still sticking down and up?

Shift star was fine. Found the issue. Part no. 131610598. Connected to the shifter, had to remove the rod, accessed it only after removing the clutch.

jet6r · Sep 13, 2020

There are 55,000 kms on it and I've owned it less than a year. I just downloaded the 97 zx6r manual and will try going through the transmission.

riverszzr · Sep 14, 2020

I would start with the things that do not require engine removal and disassembly.......but that is just my silliness talking I guess

jet6r · Oct 6, 2020

I've been reading that unlike earlier models the 07 ZX6R does not require the engine to be dropped. The clutch hub comes off which reveals the friction and steel plates, the spring and washers; the transmission is just to the right of that and it will slide out in a cassette. I'm thinking this is an opportunity to purchase a clutch kit and have it installed as well. Will definitely have a look at the shift drum and selector forks.

Zx6rcbr600rrguy · Apr 14, 2024

Is there any way I can communicate with you about this? Did that shift shaft solve the issue?

07 ZX6R possible transmission issue

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