my z250 does not start or run and its not even a week old.there is a full gas tank oil is fine dont know whats wrong.help me please.....

 

Check that kill switch is in the run position, then describe better what it does do when you hit the starter.

 

it sounds like it will start and then it dosent.i think it might be old gas because it was sittin in the dealer for a few years.

 

Just gotta go through it step by step. If you're getting spark and you think it's the gas, clean your carb and try new gas.

 

procedure:

1) Try to start it. Will probably fail.
2) Remove spark plug and check for moisture/gas.
3) If the plug is wet, check if there is a spark when you hit the starter button. (hold the plug near, almost touching the engine. near, but not too near the hole as a flame COULD come out, maybe)
4) If there is a spark, and the plug is wet, check valve clearance.
5) Adjust valve clearance if needed. If it is not needed, check compression.
6) If all seems fine to you, go to dealer, let them sort it out.

Dont spend 3 months trying to figure something out if the dealer can do it in 3 days, with only 3 hours labor.