Throttle arm removal

[mattlamb]

Hi all, I need to remove the throttle arm on my carb, it looks like a tiny screw attaches it ?

hard to tell as mine is rusty (soaking in penetrating oil now).

anyone know if its a screw head or allen key screw that holds the ar onto the carb?

thanks

[Ando]

Picture please

[Al Schober]

Matt,
I'll suggest a third possibility. As I recall, it may be a roll pin that you have to drive out using a punch from one side or the other (doesn't matter which side).
edit: I'd suggest removing the shaft and arm from the carb to do this. You'll have to remove the throttle plate from the shaft to get the shaft out.