User manual YAMAHA 25HP-2003

[. . . ] 25B 30B OWNER'S MANUAL U. S. A. Edition LIT-18626-04-90 E EMU01449 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. [. . . ] (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. 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 3-29 E 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3 Trailering outboard motor. . . . . . . . . . . . . . . . . . . 4-3 Storing outboard motor . . . . . . . . . . . . . . . . . . . . . . 4-4 PERIODIC MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . 4-8 Replacement parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8 Maintenance chart. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9 Cleaning and adjusting spark plug. . 4-10 Checking fuel system. . . . . . . . . . . . . . . . . . . . . . . . . 4-12 Inspecting fuel filter . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13 Adjusting idling speed. . . . . . . . . . . . . . . . . . . . . . . 4-14 Checking water drain under engine oil tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15 Checking wiring and connectors . . . . . . 4-16 Exhaust leakage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16 Water leakage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16 Greasing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17 Checking propeller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19 Changing gear oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21 Cleaning fuel tank. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22 Inspecting and replacing anode(s) . . . 4-23 Checking bolts and nuts . . . . . . . . . . . . . . . . . . . . 4-24 Motor exterior. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24 Coating the boat bottom . . . . . . . . . . . . . . . . . . . 4-24 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. Premix -- 100 : 1 Hypoid gear oil (SAE 90) 370 (12. 5, 13. 0) Forward-Neutral-Reverse 2. 08 (27/13) Manual F 2-stroke, L 2 395 (24. 1) 67 × 56 (2. 6 × 2. 2) C. D. I system B7HS-10 0. 9~1. 0 (0. 035~0. 039) Tiller control Manual start 12V-(80W) Choke start system r/min kW (HP) r/min 5, 000~6, 000 18. 4 (25) at 5, 500 r/min 700~800 mm (in. ) mm (in. ) mm (in. ) mm (in. ) kg (lb. ) 936 (369) 358 (14. 1) 1, 068 (42. 0) 419 (16. 5) 48. 0 (105. 8) Unit 25MHB S S S cm3 (cu. in. ) mm (in. ) NGK mm (in. ) V-A (W) L (US qt, Imp qt) Fuel:Oil cm3 (US oz, Imp oz) 4-1 E 25MHB3 30MHB -- 993 (39. 1) 360 (14. 2) 1, 158 (45. 6) 424 (16. 7) 59. 0 (130. 1) 993 (39. 1) 360 (14. 2) 1, 158 (45. 6) 424 (16. 7) 60. 0 (132. 3) 4, 500~5, 500 18. 4 (25) at 5, 000 r/min 700~800 4, 500~5, 500 22. 1 (30) at 5, 000 r/min 700~800 2-stroke, L 3 496 (30. 3) 59. 5 × 59. 5 (2. 3 × 2. 3) C. D. I system B7HS-10 0. 9~1. 0 (0. 035~0. 039) Tiller control Manual start 12V-(80W) Choke start system 2-stroke, L 3 496 (30. 3) 59. 5 × 59. 5 (2. 3 × 2. 3) C. D. I system B7HS-10 0. 9~1. 0 (0. 035~0. 039) Tiller control Manual start 12V-(80W) Choke start system Forward-Neutral-Reverse 1. 85 (24/13) Manual F Forward-Neutral-Reverse 1. 85 (24/13) Manual F 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. Premix -- 100 : 1 Hypoid gear oil (SAE 90) 200 (6. 8, 7. 0) 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. oil injection system 0. 9 (1. 0, 0. 8) -- Hypoid gear oil (SAE 90) 370 (12. 5, 13. 0) 25 (2. 5, 18) 35 (3. 5, 25) 25 (2. 5, 18) 35 (3. 5, 25) 4-2 E EMU01369* TRANSPORTING AND STORING OUTBOARD MOTOR w Leaking fuel is a fire hazard. When transporting and storing the outboard motor, close the air vent screw and fuel cock to prevent fuel from leaking. 000929 TRAILERING OUTBOARD MOTOR The motor should be trailered and stored in the normal running position. If there is insufficient road clearance in this position, then trailer the motor in the tilt position using a motor support device such as a transom saver bar. cC Do not use the tilt support lever/knob when trailering the boat. The outboard motor could shake loose from the tilt support and fall. If the motor can not be trailered in the down position, use an additional support device to secure it in the up position. w 8 Never get under the lower unit while it is tilted, even if a motor support bar is used. Severe injury could occur if the outboard accidentally falls. 8 USE CARE when transporting fuel tank, whether in a boat or car. DO NOT fill fuel container to maximum capacity. Gasoline will expand considerably as it warms up and can build up pressure in the fuel container. This can cause fuel leakage and a potential fire hazard. 4-3 E When transporting or storing the outboard motor while removed from a boat, fold the tiller handle and lean the motor on the tiller handle to keep in a horizontal position. NOTE: Place a towel or the like under the outboard motor to protect it from damage. 102013 cC Keep the power unit higher than the propeller at all times. Otherwise, cooling water can run into the cylinder, which could result in damage. EMU01785 STORING OUTBOARD MOTOR 25, 25-3 When storing your outboard motor for prolonged periods of time (2 months or longer), several important procedures must be performed to prevent excessive damage. It is advisable to have your outboard motor serviced by an authorized Yamaha dealer prior to storage. However, the following procedures can be performed by the owner with a minimum of tools. cC 8 Do not place the outboard motor on its side before the cooling water has drained from it completely, otherwise water may enter the cylinder through the exhaust port and cause engine trouble. [. . . ] don't forget to include any important information such as names, addresses, model, engine serial number, dates, and receipts. CHANGE OF ADDRESS The federal government requires each manufacturer of a motor vehicle to maintain a complete, up-to-date list of all first purchasers against the possibility of a safety-related defect and recall. 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. [. . . ]