Why is my 2010 klx hard to start when it is warm?

why not just get the proper set of keys from the dealer.

The knob for the choke cable should be beside the handlebars & choke should be written on it.
Just pull it up to apply the choke & push it back down when the engine warms up.

sounds like the fork tubes may be bent, if that is true , the proper solution is to replace them

sounds like throttle cable problem, check handlebar throttle and the other end by the carberreta

It is well known that Yamaha has the XSR range of vintage motorcycles for the international market, while the kawasaki Ninja 250 wapcar is all the rage in the Southeast Asian market.

carbs need to be cleaned

Be certain the battery is in good condition. Install a new spark plug. Clean the carb and air filter. Use the throttle sparingly. The carb has a power valve that gives an extra shot of gas each time the throttle is twisted. Too many twists and the engine floods out. Please rate my answer. Thanks!

try to adjust the carburetor air adjuster , some klx has blind the adjuster , dont worry you can only pull that put ..

buy new cylaniods and possiable a new starter