MODELS:OTH9.9OTH15OTH30OTH40Max. Output9.9HP/7.3KW15HP/11.00KW30HP/20.5KW40HP/29.4KWFull Throttle Operating Range4500-5500rpm4500-5500rpm4500-5500rpm4500-5500rpmStroke2222Cylinder2222Displacement246mL246mL703mL703mLBore X Stroke56*50mm56*50mm80*70mm80*70mmLength X Width X Height873*332*1040mm873*332*1040mm1073*402*1350mm1073*402*1350mmWeight36kg36kg73.6kg73.6kgGear Ratio2.08(27:13)2.08(27:13)2(26:13)2(26:13)Gear Shift PositionF-N-RF-N-RF-N-RF-N-RIgnition SystemCDICDICDICDICooling SystemWater-coolingWater-coolingWater-coolingWater-coolingStarting SystemManualManualManualManualControl SystemTiller controlTiller controlTiller controlTiller controlLubrication SystemMixed fuel & oilMixed fuel & oilMixed fuel & oilMixed fuel & oilCapacity Of Fuel Tank24L24L24L24LRecommended OilRegular lead-free gasolineRegular lead-free gasolineRegular lead-free gasolineRegular lead-free gasolineRecommended Lubricant2 stroke outboard engine lubricant2 stroke outboard engine lubricant2 stroke outboard engine lubricant2 stroke outboard engine lubricantRecommended Gear OilHypoid gear oil-SAE#90Hypoid gear oil-SAE#90Hypoid gear oil-SAE#90Hypoid gear oil-SAE#90Recommended PropellerJJ3*12-1/4"4*8" 3*11-1/4"*14"3*12-1/4"4*8" 3*11-1/4"*14"