Model: SY3800 Power Type:Single Cylinder,Two-stroke,Air-cooling,gasoline engine. Displacement:37.2cc Compress Ratio: 6.1:1 Rated Output Power & Relevant Speed:1.2Kw/7000rpm Lading Speed:2800 rpm Fuel Mixture Ratio:(Gasoline 25: Two-cycle Oil 1) Ignition System:C.D.I Guide Bar Size: 14"/16 "Pitch:3/8″ Chain Gauge: 0.050″ Engine net weight: 4.05 kg Measurement: 42.5X24.5X30cm G/N weight:6/4.85 kgs Qty/20''FCL:840pcs Qty/40''FCL:2,080pcs Qty/40''HQ:2,340pcs Certification:CE