Kawasaki Ninja Forum banner
1 - 14 of 14 Posts

·
Premium Member
Joined
·
4,247 Posts
I've had the same thing numerous times, I think its a characteristic of the gearbox, but I may be wrong!
 

·
Registered
Joined
·
16 Posts
I get that clunk between first and second going up and down. I have even started slipping the clutch a bit more when shifting inbetween those two but I think I will have to get the crappy oil out and some synthetic in.

I was going to wait for the 6000km service but I might do it when I get home.
 

·
Premium Member
Joined
·
4,247 Posts
I'm not entirely sure, but the oil we put in may have been semi-synthetic, which I have seen somewhere recommended as something like a break-in time for full synthetic, it's supposedly like going cold turkey if you go full synt.
 

·
Registered
Joined
·
11 Posts
Yea mine does the same thing. It makes that clunk because you are bypassing neutral. No worries. But like Razorback said, when downshifting to 1st or neutral from 2nd make sure you are going under 15-20mph else it's hard on the gearbox.
 

·
Registered
Joined
·
5,695 Posts
Razor and Pilot are partially correct. More specifically, it has to do with the input and output differences of your gearbox - ie, how fast the side connected to the clutch, and therefor engine is going vs. how fast the side connected to the chain and rear wheel are going.

Next time, when you're at a stop light and the bike is idling in Neutral, pull in the clutch, count 1.5 seconds, and then shift into 1st. It won't clunk.

When you shift from 1st to 2nd, you're timing has to be EXACT to get it not to klunk.. If I were to estimate shift time, I would say somewhere between 700ms and 1.2 sec. If you shift too fast at lower RPM's, you don't give the engine, and there for the input shaft, time to slow down and re-match the output shaft (rear wheel). Which causes the dog-teeth to engage very harshly and make a loud "klunk" sound.

This is completely dependent on how wide the ratios are, (obviously ALL the same for the 250, regardless of final ratio - sprocket and chain). I've found 1st-2nd being a very large difference. 1st is Extremely short, and 2nd is quite a bit taller. The difference between 1st and 2nd being much larger than 2nd to 3rd.

So really give that engine some time to slow down before you shift.... See if this helps.
 
1 - 14 of 14 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top