[Lynniz]

Hi All,

This is my first post and I'm having some problem sometimes with my 2009 250r that I just got. It currently has about 2600 miles on it. This problem happened twice so far. When I'm in the friction zone in the 1st gear, the bike would start moving just fine. As soon as I turn the throttle while slowly releasing the clutch, it would move for a little then stall. Felt like there is no fuel while I still have half of a tank right now. After I let it sit in idle for awhile, it was doing a little better, but def not as a smooth of a ride as the day before. Any suggestions? I am new to the biking and have never worked on a bike, but I would like to learn how to main/repair it. Sorry for the long post. Thanks in advance!

 

[jkv45]

What is the idle set at? The engine is fully warm, right?

It may just be that you need to roll the throttle on more than you are or the throttle cable and/or clutch cable need adjusting.


Jay

 

[Lynniz]

Thanks Jay for replying. The idle is set around 1300 rpm. How long do I need to run the engine so it is warmed? I think the manual said no more than 5 mins right? I did turn the throttle more to see if it made any difference, but it just stalled faster. Just for those two times this weird thing happened, other times it was fine. Do you have instructions on how to adjust the clutch/throttle cable?? Thanks again,

Lynniz

 

[jkv45]

The idle is fine then.

Generally, you don't want to let an engine idle to warm-up (just ride gently for a few minutes) but I know the Ninja is a bit cold-blooded, so give it a few. It's not fully warm until ridden for at least 10 min or so.

You may need to have someone that's an experienced rider take a look at it and see if they think there is an issue with the throttle or clutch adjustment.

Basically, there shouldn't be much loose rotation of the throttle tube before you can feel the slides in the carbs move. For the clutch, if you gently pull the lever in (with 1 finger) you will feel when you hit resistance. At that point look at the V-shaped gap between the end of the lever near the pivot and the perch. There is a spec somewhere, but I'm pretty sure the gap should be a small amount like 1/4" or less. If it's too loose it will be more like 1/2" to 3/4".

Take a look and report back...

 

[nherald]

I was having problems with the bike stalling quite a bit actually and I just cleaned out my air filter and the problem went away at once. I was having to let it warm up for 5 to 10 minutes... Also, put some Seafoam in it. That will clean up everything in the engine atleast. I did those two things and she runs beautifully now.

 

[spooph]

After following the excellent advice listed above, you might want to look into fattening up the off-idle mixture. The entire jet set for a stock ninja is tediously lean, and by giving it a bit more gas at idle and off-idle (especially), it really wakes up... See if you can find some old posts on the whole jetting thing - it's an involved project, and without some previous homework and research on your part, it makes it difficult to explain to you what to do without writing a book.

 

[DemonRider]

My wife's bike is doing the same thing, so I'll keep an eye out for more responses and try to the abOve stuff in the mean time. glad its not just me.

 

[Lynniz]

I'll look into those this weekend and report back. Thx for all the great advices.

 

[Samson]

Well first of all, the Choke needs to be FULLY on or all the way up towards the headlight. Then the clutch cable can be adjusted for further performance improvements.
so a checklist,
1. Warm engine, choke is fully enabled(our plastic holding the choke switch was loose resulting in it cutting off.)

2. Clutch Cable could be to short or too long really should be to taught if anything.

3. Carb is clogged, take a allen wrench i think its a 7mm and hook up a small surgical tube on one of the two nipples. place the other end of the tube into a container(i use a milk jug) As you loosen the bolt, gas will pour out. if no gas comes out its a clogged carb and you will have to remove those and have them rebuilt which isnt usual for a newer ninja but if it wasnt taken care of. well it happened to my 08 just because the guy blew the engine out horribly. but it cost a hefty 80 dollars in labor and trust me the labor isnt that intensive unless you cant read instructions. We saved time but giving it to our local kawi dealer.