make sure when you push the key in to choke it you hear it click,on the enrichener solenoid there is a red lever,turn it and see if it starts,if so either the enrichener solenoid is bad or it's the ignition switch,probably the solenoid though.you may need someone to stand by the motor when you push the key the solenoid with the red lever will be what clicks,when it starts if it does,after a few seconds turn the red lever back to its normal position.