Yamaha EK40G Service Manual

1-66H95G11987654321SelectionWhen the engine speed is at the full throttleoperating range (4,500–5,500 r/min), theideal propeller for the boat is one that pro-vides maximum performance in relation toboat speed and fuel consumption.EK40GEK40JPredelivery checksTo make the delivery process smooth andefficient, the predelivery checks should becompleted as explained below.Checking the fuel system1. Check that the fuel hose is securely con-nected and that the fuel tank is filled withfuel.cCUse pre-mixed fuel only.Fuel and oil mixing ratio is 30:1. Forbreak-in period, gasoline: 25:1, kerosene:30:1 mixture shall be used.Checking the gear oil1. Check the gear oil level.Checking the battery (W)1. Check the capacity, electrolyte level, andspecified gravity of the battery.Propeller size (in) Material11 3/4 × 7 1/2 - H11 3/4 × 8 3/4 - H11 3/4 × 10 - H Aluminum11 1/2 × 11 - H11 1/2 × 12 - H11 1/2 × 13 - H11 1/2 × 13 1/2 - HPropeller size (in) Material12 1/4 × 9 - G11 3/4 × 10 - G11 5/8 × 11 - G12 × 11 - G11 3/8 × 12 - G11 3/4 × 12 - G11 1/8 × 13 - G Aluminum11 1/2 × 13 - G10 1/4 × 14 - G11 1/4 × 14 - G10 1/4 × 15 - G11 × 15 - G10 1/4 × 16 - G10 3/4 × 16 - G10 3/4 × 17 - G6H9100406F630195Propeller selection/Predelivery checksRecommended battery capacity:CCA/EN: 347 A20HR/IEC: 40 AhElectrolyte specified gravity:1.280 at 20°C (68°F)