My problems is that it stalls when i starts it.
The reason i got this problem was that i tried to configure it so the engine woldnt stop when i uses the brakes.
If the engine stops when you use the brakes, that probably means your clutch shoes or clutch springs are worn out.
You'll need new ones. Once you replace them, you'll find that you can return the engine needle settings to their original positions prior to the problem.
Buggies normally wear out clutches, these are part of the consumables like fuel.