Moped cutting out when I brake, idle increased already.

[ninja_butler]

I haven't tried altering the air screw yet, only the throttle-stop screw - I plan to do that tomorrow but I thought I'd check here first to make sure I'm not missing anything obvious.

The moped (Suzuki FZ50) is fine when it's running, but it has a habit of cutting out when I come to a stop; the revs drop and the engine sputters out. It starts up again if I hold the throttle halfway open and give it about 4 or 5 kicks, which is odd because from cold it will start with just one gentle kick every time.

[Dioxid3]

Try with your hand, does the kick go down easily or does it kick back a bit?

Try cleaning air filter. It all indicates that its running rich, if it starts well cold but warm doesnt.

[jaffa90]

Providing you have fuel flow it sounds like the pilot jet has a restriction, try the choke when you think it`s going to stall.

[Copycat73]

I would try fittin a new spark plug.
____________________
Whatever I post I have no citation and no intention of providing one..
caveat emptor

[ninja_butler]

The spark plug is new. I checked it and it's sooty black - classic "too rich" looking spark plug. The air-screw was almost closed; the manual says 1 3/4 open (almost two full turns) so I've set it to that.

When I set the air screw though, I first did it with the air-filter removed and the revs went far too high. I don't know if that's normal but with the filter off the moped was ready to pull itself off it's centre-stand. With the filter back in place and the air-screw at 1 3/4, I've guesstimated the idle speed and now I just need to take it for a run to see what happens.

An old problem has cropped up again; the throttle cable is sticky; I don't know if the carb cable is okay (it's a splitter cable - throttle controls both) but the throttle cable is definitely sticky. If I have to buy a new one (and the one on there IS a new one) I'll have to figure out what the right cable to use is because it's not a normal standard FZ50 cable; the throttle is off of a different bike and I know not what model.

But for now, I just need to give it a ride and see if it works or not.