OSPEAK gasoline chain saw. we are professional factory since 2006, welcome ... Ratio: 6.1:1 3) Fuel mixture Ratio: 25/1(gasoline 25: two cycle oil 1) 4) Fuel Tank capacity ... :18"/20"(standard)9) Chain: Oregon+1.8usd/Carlton(standard) 11)Chain pitch: 0.325" 12) Chain Gauge: 0.058" 13 ... /6.7kgs 15) Meas: 530x260x300mm General Accessories: guide bar, chain, tools bag, machine oil tank, guide bar cover, ear ...