i noticed my fan was not comeing on so i checked my raidator and there was no warter or anything in it so i put some distealed water in it and the water mixed with my oil and went through my whole motor even the carb and the air box so i took the motor apart and thought i might have had a cracked head or jug but they both looked good so then i thought it might have been a head gasket but it looked good to so i dont know what it is will some body please help me

 

check your water pump shaft seal, take the cover off your water pump and unthread the impeller, it comes off with a 10mm socket. there should be a spring loaded mechanical seal right behind it, be careful not to break the carbon mating surfaces they are very brittle. the shaft seal will be right behind that. its a long shot that is your problem but it sounds like u got the top of the motor covered.