I don't own one, but came across the Txt 50 on the Gas Gas website. It said the clutch was an automatic system with manual influence. What does this mean and how does this work? I'm curious. I remember my dad not wanting to get me started on the older 50's because of the lack of clutch and the bad habbits it would form.

It has a centrifugal clutch and there is a manual hydraulic override operated by the LH handlebar lever that acts against the centrifugal engagement mechanism.

The manual clutch feels and acts just like a normal bike clutch, but it can only drive above a certain motor RPM. It is a pretty clever set-up if you don't want to have be kickstarting your kid's bike all day (it stops the kid from stalling the motor), but the kid can use the manual clutch just like a normal clutch if they want to.

TXT-50 clutch is similar to this:

http://www.rekluse.com/