My 05' AC 250 will not start. I check and the plug is firing. Also took to carb off, disassembled and cleaned all the jets and still will not start. The last several times we rode, it was very difficult to start and now nothing.

Any ideas what it might be?

 

When was the last time you had the valves adjusted?. Hard starting usually means the valves are out of spec.

 

Its been at least two years maybe longer. Is that something I could do?