Linhai 300 Yamaha side by side. What do I check to get spark to plug

 

Hello....start at your spark plugthe black wire that snaps on the plug should not come off very easy ...make sure it's clean ....track the black wire from plug to the plug coil...make sure it and the other two wires are secured and attached....trace the other two wires back ...one should be going to the CDI and the other to a ground ...perferibly on the engine or frame