User manual YAMAHA 50HP

[. . . ] 50 OWNER'S MANUAL U. S. A. Edition LIT-18626-06-94 63B-28199-1F EMU25060 ZMU01690 Read this owner's manual carefully before operating your outboard motor. Important manual information EMU31280 To the owner Thank you for choosing a Yamaha outboard motor. This Owner's Manual contains information needed for proper operation, maintenance and care. A thorough understanding of these simple instructions will help you obtain maximum enjoyment from your new Yamaha. If you have any question about the operation or maintenance of your outboard motor, please consult a Yamaha dealer. [. . . ] Performance drops and engine wear increases dramatically. While many additives available may reduce deposits, Yamaha recommends the use of Ring Free Fuel Additive, available from your Yamaha dealer. Ring Free Fuel Additive has repeatedly proven its ability to clean combustion deposits from inside the engine, notably the critical piston-ring-land area, and fuel system components. Follow product labeling for use instructions. Filling fuel and engine oil EMU27242 Filling fuel for portable tank EWM00060 WARNING Gasoline and its vapors are highly flammable and explosive. Keep away from sparks, cigarettes, flames, or other sources of ignition. Fuel tank capacity (if equipped Yamaha fuel tank): 25 L (6. 60 US gal) (5. 50 Imp. gal) 27 Operation EMU27311 Filling oil for electric start models EWM00530 WARNING Do not add gasoline into the oil tank. This engine uses the Yamaha oil injection system, which provides superior lubrication by ensuring the proper oil ratio for all operating conditions. Simply pour gasoline into the fuel tank and oil into the oil tank. Convenient indicator segments indicate the status of the oil supply. For details on reading the indicator segments, see page 29. To fill the engine oil tank, proceed as follows: Engine oil tank capacity: 1. 5 L (1. 59 US qt) (1. 32 Imp. qt) 1. Turn the oil filler access cap on the top cowling counterclockwise and open it. 1. Oil tank filler cap ZMU03370 3. Slowly pour the engine oil into the engine oil tank. 2 1 ZMU03371 4. After filling, replace the all caps securely. ZMU03369 2. Open the oil tank filler cap by pulling the tab on the cap. 28 Operation EMU27321 Oil level indicator operation The various functions of the oil level system are as follows: EMU27350 Electric start models Oil level warning indicator (digital tachometer) Oil level warning indicator (analog tachometer/ bottom cowling) Green Engine oil tank Remarks more than 450 cm3 (0. 48 US qt, 0. 40 Imp qt) No refilling necessary. Yellow from 450 cm3 (0. 48 US qt, 0. 40 Imp qt) down to 200 cm3 (0. 21 US qt, 0. 18 Imp qt) Add oil; see page 28. Red 200 cm3 (0. 21 US qt, 0. 18 Imp qt) or less G G Buzzer sounds in remote control box and engine speed is limited to about 2000 r/min to help conserve oil. Check oil filter for clogging. EMU27450 Operating engine EMU27461 Feeding fuel (portable tank) EWM00420 WARNING G G G Before starting the engine, make sure that the boat is tightly moored and that you can steer clear of any obstructions. Be sure there are no swimmers in the water near you. When the air vent screw is loosened, gasoline vapor will be released. Gasoline is highly flammable, and its vapors are flammable and explosive. Refrain from smoking, and keep away from open flames and sparks while loosening the air vent screw. This product emits exhaust gases which contain carbon monoxide, a colorless, odorless gas which could cause brain damage or death when inhaled. Symptoms include nausea, dizziness, and drowsiness. Keep cockpit and cabin areas well ventilated. If there is an air vent screw on the fuel 1. 29 Operation tank cap, loosen it 2 or 3 turns. [. . . ] Keep loose clothing and other objects away from the engine when starting it. Do not touch the flywheel or other moving parts when the engine is running. Adjust the trim angle so that the drive shaft is at right angles to the water surface or is trimmed in. On models equipped with an emergency starter valve, open it. [. . . ]