... EMS Best prices ! Approved quality Model45cc51ccWeight(without a tire and chain)5,5 kg5,5 kgSizes (without a tire and ... of engine (idling)2800 rpm2800 rpmChain Sprocket7Tx0.3257Tx0.325Type of chain OREGONOREGONStep of chain0,325 in0, 325 inThickness of link ... ,SGS,EMSSystem of presentationThe automatic begin to swing is with a regulatorThe automatic begin to swing is with a regulator gas chain saw