HEADS UP!!!

Site upgrade in progress... Core site functions are working, but some non-critical features/functions will be temporarily unavailable while we work to restore them over the next couple of weeks.

Please post any bugs you encounter, but before you do, check to see if it's already listed.

Thanks for your patience while we work to improve the community.

Sign in to follow this  
Followers 0
Chipmaker

07 YZ450 kills 2 stators

8 posts in this topic

2007 has gone thru two stators in 6 months. Has anyone heard of this problem? Something has to be taking them out? Could it be related to the CDI unit????:excuseme:

Share this post


Link to post
Share on other sites

I havent experianced this personally. But for 09 yamaha did improve the the stator mounts to make it amore dependable. Maybe you could get one of the newer ones to mount up?

Share this post


Link to post
Share on other sites

What part of the stator died? The charging side or the ignition side? I've heard of a bad rectifier/regulator taking out the charging/lighting coil side.

Share this post


Link to post
Share on other sites

it was the power generating side, it was not the "trigger" coil.

The 05-08 coil is on a base that is a cut out shape, the 03-05 is on a round circular base. I think the 03-05 might mount in the engine case. But the 07 mounts in the side cover on the engine. The one thats in it now came from my 07 and we put it in my sons bike when his first one when bad last winter.

Share this post


Link to post
Share on other sites
What part of the stator died? The charging side or the ignition side? I've heard of a bad rectifier/regulator taking out the charging/lighting coil side.
There is no rectifier/regulator in the YZF electrical system. There are two circuits in the stator, not counting the trigger coil, but both of them feed directly into the CDI.

I believe that there may have been a "bad batch" produced, as the '07 and very early '08 appear to be affected, but there have not been many '06's involved. The newest stator is supposed to address this.

Share this post


Link to post
Share on other sites

Thanks for the heads up Grey. I was kind of going off the setup on my YFZ450 which is (well...was, before going all DC) AC and DC output. Is the YZF all AC? Does the CDI act as the regulator?

Share this post


Link to post
Share on other sites

YFZ's and WR's are essentially the same system (AC to DC). The YZ's are all AC. Solid state electronics, of course requires DC current, but all current rectification and regulation is done internally within the CDI.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0