since its a brand new motor you will need to heat up the eninge to about 100-130f with a heat gun befor you can turn it over because of the compretion. also make sure your starter wheel and opning on the chassis is alinded right. you also may need lower motor mounts because the motor mounds are made for a pull start engine. so it is higher up and may not make contact with the flywheel. also check ur battrie packs to make sure they are charged up.and if you are using stick pack go out and get a 12v gel cell.