My bike stalls when idling even with hot engine, so I have to keep increasing the revs a bit when stationary. I tried to turn the throttle stop screw a tiny bit to remedy this but it won't turn. I didn't manage to look under the rubber protective thingy but it feels like as if it was corroded.

Is there any way to get the existing screw to work or do I need to change it? If the latter, how do I go about it? Is it difficult and should I take it to a garage instead?

My bike stalls when idling even with hot engine, so I have to keep increasing the revs a bit when stationary. I tried to turn the throttle stop screw a tiny bit to remedy this but it won't turn. I didn't manage to look under the rubber protective thingy but it feels like as if it was corroded.

Is there any way to get the existing screw to work or do I need to change it? If the latter, how do I go about it? Is it difficult and should I take it to a garage instead?

Try adjusting the idle screw, left side of the bike, should have a round plastic knob on it.

Try adjusting the idle screw, left side of the bike, should have a round plastic knob on it.

I think we are talking about the same screw. It won't turn.

I didn't manage to look under the rubber protective thingy

should have a round plastic knob on it.

I think we are talking about the same screw.

Steady on chaps, this thread is turning into a carry on film script!

Left hand side of the engine as you sit on the bike, between the 2 cyclinders, about halfway down, on a little bracket, should be the screw. If its seized, try a little relaease oil