My kawasaki gpz 600r cuts out when i try to move off in first gear. Is the some sort of safety cut out making it do this? it starts fine and runs fine but will not move.

It might be a clutch safety switch thats been disabled ?

Hi , try to press the clutch lever wille you push the start button

check the coil.

To lose the switches job, cut the 2 wires and twist them together, this will complete the circuit and the bike will think the kick stand is up, I did this, and do you know how many times I took off with the kick stand down??? Lots!! They make a kit that will fix this, it will start with the kickstand down, but kill the engine if it is put in gear.

Running well at high revs would indicate that all the fuel and air it needs are getting to the engine and you also have a good spark. Probably no problem with air and fuel filter ( if fitted) or sparkplugs.

Running hot, and bad idling are signs of a lean air fuel mixture. The engine is probably not getting enough fuel at low revs.

This could be caused by an air leak between the carburettors and the engine. Check that the vacuum line to the fuel tap is properly secured at both ends. It is behind the fuel line at the tap.

Get a a short length of hollow plastic tube and use it like a stethascope - put one end to your ear and move the other end around your carburettor mounts with your engine revs as low as you can get, and listen for any sucking noises that would indicate a leak. Look for cracks in the rubber inlets.

The other possibility is that there is an internal blockage in the idling jets or idling fuel circuit. This is where dirt tends to lodge because the jet dimensions and passageways are very fine - The high speed jets are much bigger and dirt often just passes straight through.

Try a little bit of choke while the engine is warm to see if you get a stronger low speed response. If so that would point to an internal blockage.