mz 250 super 5 throttle sticking

[Darklord]

Twice now my throttle has jammed wide open , I can find nothing obvious that is wrong , any ideas ?

[djsbriscoe]

Hi,
It could be any of the following
a/ Twist grip getting stuck at extreme of travel.
b/ Inner throttle cable getting stuck inside the cable cover.
c/ Throttle cable routed incorectly or is too long.
d/ Mismatch between length of inner cable and cable cover.
e/ Foreign body (i.e grit) getting stuck in between a worn carb slide and carb body.
f/ Spring pushing against the slide weak or broken.
g/ General lack of lubrication.

I cant think of any more but the list gives you some ideas of what to check.

David.

[MZRiderJP]

The throttle slide occasionally when at full throttle revolves round very slightly and sits on the little peg that is within the carb barrel. The reason for this in my case was that the pin was not secure and protruded further into the barrel than it should. This small peg centralizes the slide within the barrel. Consequently when we open the carb slide to see what's amiss we unknowingly dislodge the slide back to it's correct position.
Twice this happened to me on super 5s. The first time my friend thought that my riding skills were suicidal. I couldn't stop the bike in a convenient place because of heavy traffic. Ha, just passed the lot of them.