<div class="FTQUOTE"><begin quote>Originally posted by: Quad Challenge

Hi, its the switch on the brake lever. It stops the bike over revving and damaging the clutch / belt if you have forgotten to release it after starting.



Either you have disconnected it to aid starting or it is stuck / broken.



Good luck !</end quote></div>

I'm sorta thinking this too !
We tried to disconnect it on our bike but discovered that it is connected into the stock CDI and therefore cannot be simply bypassed.
If it is not releasing after starting then it will make the bike rev limit very early

 

now the more mess with it the spark is weaker and vary unconsistant now it wont even start anymore .

 

<div class="FTQUOTE"><begin quote>Originally posted by: tlronny

<div class="FTQUOTE"><begin quote>Originally posted by: Quad Challenge



Hi, its the switch on the brake lever. It stops the bike over revving and damaging the clutch / belt if you have forgotten to release it after starting.







Either you have disconnected it to aid starting or it is stuck / broken.







Good luck !</end quote></div>



I'm sorta thinking this too !

We tried to disconnect it on our bike but discovered that it is connected into the stock CDI and therefore cannot be simply bypassed.

If it is not releasing after starting then it will make the bike rev limit very early</end quote></div>


Me three... If its disconnected the CDI kicks in a really low rev limit

 

My DT used to do that when my main jets were too big. Maybe your float level got bumped up a little?

 

My son has a 2006 LTZ 50. I had major problems with the cdi. It wouldn't let it even crank. I replaced it and everything is good. From everyone that I have talked too they aren't that great. I just replaced it with a stock one for a 50 but from what I can read the way to go would be the one for the 90 I just don't know how reliable it is. Good luck.