Kfx 50 wont start not even with carb cleaner has spark suspect compression valve train looks normal advice

Question edited for clarity.
Question moved from motorcycles to ATV model category.

Turning over has nothing to do with the carburetor! Your battery is flat. It will need charging.

If the carb is leaking, it is because the float is set wrong or the float valve needle isn't seating properly.

Engines only need three things to run.

A supply of clean fresh fuel (not sitting a year)
A Spark at the right time.
Compression.

You say you cleaned the carb **in** carb cleaner, as opposed to *with* carb cleaner. Did you strip it down, check the float for holes, clean the jets and needles?

Carb.

if it broke the timing chain it might've bent the valve

lots of reasons check spark again and fuel to what filter carb? engine problems basically are gas and spark so tells me its gas pull plug squirt some gas 2 stroke make shure its oil/gas 4 stroke gas only in cylinder use a eyedropper or a clear gas line of fuel to put fuel in cylinder put plug back in fire up if starts problem in carb if no start may have jumped timing check air filter may even have a mouse nest in it most people don't drain gas out of carbs for winter drop carb clean bowl with pure white vinegar clean all jets pilot / main reasemble

Take fuel cap off to make sure it is getting air to fuel tank. Check fuel valve to make sure it is on. Drain carb with screw on bottom of carb to check for water. Pull spark plug to make sure it is firing.

Is your choke working OK? Even in the summer time a cold engine needs a littel choke...more gas than air to get started. But you don't need to keep the choke on for very long in the summer since the engine warms up faster. You could try some carb cleaner or even taken the carb off and cleaning it good because it sounds definitely like a fuel problem so it was a good idea to check the pump and filter.

just for fun, while you're cranking it put your hand over the intake of the carb completely covering it and see if your hand gets wet with gas. this might even start it too.

there should be a hole in your flywheel that line up with the screws and your coil loosen it up and you slide it back and forth hard to get it so far out that it wont start though if possible it would be easier for you to pull the flywheel then you can adjust it by hand starting the center and see how it does

could be faulty plug