bike doesnt rev

hi on the way home my 70cc 2stroke honda would not rev high anymore. it would only run on full throttle just about. if you hold it there forever it will eventually reach the high rpms. if you hold it at anything less it sputters and gradually dies. it idles and starts fine. any help would be great need it running good again for monday. thanks

 

Sounds like you need to clean your carb and jets it's probably just shit in your main jet.

 

Stripped it down turned out to be a blocked main je. Thanks for the posts

 

Your welcome.