Purchased a chinese 110cc from CA for my son to get him started in dirt biking, and it won't start! Shipped the carb and starter relay back to seller and they confirmed they are not the problem. Getting spark and fuel. Battery checked and good. Electric starter was bench tested and okay, but will not turn over with battery (nothing happens when the starter button is pushed). Will not start by kicking or pushing. Appears to be electrical and seller has no other suggestions. Any help? Thank you!!