User manual YAMAHA 25HP-1999

[. . . ] In this Owner's Manual particularly important information is distinguished in the following ways. The Safety Alert Symbol means ATTENTION!YOUR SAFETY IS INVOLVED! cC A CAUTION indicates special precautions that must be taken to avoid damage to the outboard motor. NOTE: A NOTE provides key information to make procedures easier or clearer. [. . . ] 8 Keep the power unit higher than the propeller at all times. Otherwise, water can run into the cylinder, causing damage. w Be sure all people are clear of the outboard motor when adjusting the tilt angle, also be careful not to pinch any body parts between the drive unit and engine bracket. 3-27 E w Leaking fuel is a fire hazard. Disconnect the fuel line if the engine will be tilted for more than a few minutes. (If the fuel connector is provided on the motor. ) EMG63910 N PROCEDURE FOR TILTING UP 25 1) 2) Place the gear shift lever in Neutral. Remove the fuel line connection from the motor. 406012 3) Push the tilt lock lever to release. 402061** 4) Pull up the shallow water lever. 402075* 3-28 E 5) 6) Hold the rear of the top cowling with one hand and fully tilt the engine up. The tilt support bar turns to the locked position automatically. EMG63010* PROCEDURE FOR TILTING UP 25-3/30 1) Remove the fuel-line connection from the motor. (If the fuel connector is provided on the motor. ) Place the tilt-lock lever in Release. 2) 402035 3) Hold the rear of the top cowling with one hand, tilt the engine up, and turn the tilt-support lever to the locked position and support the engine. 403024 EMG73410 PROCEDURE FOR TILTING DOWN 25 1) 2) 3) 402075* Return the shallow water lever. Slightly tilt up the engine until the tilt support bar is released automatically. Tilt down the engine. 3-29 E EMG73210 PROCEDURE FOR TILTING DOWN 25-3/30 1) 2) Return the tilt support lever tilting up the engine slightly. Tilt down the engine. 403036 EMH60010 CRUISING IN OTHER CONDITIONS CRUISING IN SALT WATER After operating in salt water, wash out the cooling-water passages with fresh water to prevent them from becoming cloggedup with salt deposits. NOTE: Refer to cooling system flushing instructions in "TRANSPORTING AND STORING OUTBOARD MOTOR". CRUISING IN TURBID WATER It is strongly recommended that the optional chromium-plated water-pump kit be installed if the outboard is to be used in turbid (muddy) water conditions. 3-30 E -MEMO- E EMK00010 Chapter 4 MAINTENANCE 1 2 3 4 5 6 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 TRANSPORTING AND STORING OUTBOARD MOTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2 Trailering outboard motor. . . . . . . . . . . . . . . . . . . 4-2 Storing outboard motor . . . . . . . . . . . . . . . . . . . . . . 4-3 PERIODIC MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . 4-7 Replacement parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7 Maintenance chart. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8 Cleaning and adjusting spark plug. . . . 4-9 Checking top cowling . . . . . . . . . . . . . . . . . . . . . . . . 4-10 Checking fuel system. . . . . . . . . . . . . . . . . . . . . . . . . 4-11 Inspecting fuel filter . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12 Inspecting idling speed. . . . . . . . . . . . . . . . . . . . . . 4-13 Checking water in engine oil tank . . . . 4-14 Checking wiring and connectors . . . . . . 4-15 Exhaust leakage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15 Water leakage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15 Greasing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16 Checking propeller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18 Changing gear oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20 Cleaning fuel tank. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21 Inspecting and replacing anode(s) . . . 4-22 Checking bolts and nuts . . . . . . . . . . . . . . . . . . . . 4-23 Motor exterior. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-23 Coating the boat bottom . . . . . . . . . . . . . . . . . . . 4-23 E EMK10011* SPECIFICATIONS Model Item DIMENSIONS 8Overall Length 8Overall Width 8Overall Height 8Transom height 8Weight PERFORMANCE 8Full throttle operating range 8Maximum output 8Idling speed ENGINE 8Type Number of cylinder Displacement Bore × stroke 8Ignition system 8Spark plug Spark plug gap 8Control system 8Starting system 8Alternator output 8Starting carburetion system DRIVE UNIT 8Gear positions Gear ratio 8Trim/tilt system 8Propeller mark FUEL AND OIL 8Fuel Fuel tank capacity 8Recommended engine oil 8Lubrication Engine oil capacity (engine oil tank) Fuel:oil ratio 8Recommended gearcase oil Gear oil capacity TIGHTENING TORQUE 8Spark plug 8Propeller nut N·m (kgf·m, lb·ft) N·m (kgf·m, lb·ft) 25 (2. 5, 18) 35 (3. 5, 25) L (US gal, Imp gal) Regular-unleaded gasoline (P. O. N. : minimum 86) 25 (6. 6, 5. 5) YAMALUBE 2 STROKE OUTBOARD OIL or an equivalent TC-W3 certified outboard oil. Perform the flushing and fogging at the same time. 2) Install the outboard motor on the water tank, and fill the tank with fresh water to above the level of the anticavitation plate. 1 Water surface 2 Lowest water level 605024 cC If the fresh water level is below the level of the anti-cavitation plate, or if the water supply is insufficient, engine seizure may occur. w 8 Do not touch or remove electrical parts when starting or during operation. 8 Keep hands, hair and clothes away from flywheel and other rotating parts while engine is running. 3) 4) Run the engine at a fast idle for 10~15 minutes. Just prior to turning off the engine, quickly spray "Yamaha Stor-Rite Engine Fogging Oil" (Part No. LUBSTRRT-12-00) alternately into carburetor. When properly done, the engine will smoke excessively and almost stall. Turn off the engine and water supply. 5) 4-5 E EMK26111 Lubrication 1) Remove the spark plugs, and spray a 10 second spray of "Yamaha StorRite Engine Fogging Oil" into each cylinder. Grease the spark plug threads and reinstall the spark plugs and torque to proper specification. (Refer to "CLEANING AND ADJUSTING SPARK PLUG". ) 2) Turn the engine over with the stop lanyard disconnected to work the fogging oil into the piston rings. This prevents the formation of condensation. [. . . ] This list is complied from the purchase registrations sent to Yamaha Motor Corporation, U. S. A. by the selling dealer at the time of your purchase. If you should move after you have purchased your new outboard, please advise us of your new address by sending a postcard listing your outboard model name, engine serial number, dealer number (or dealer's name) as it is shown on your warranty identification, your name and new mailing address. Mail to: YAMAHA MOTOR CORPORATION, U. S. A. [. . . ]