Detailed instructions for use are in the User's Guide.
[. . . ] NOTE: A NOTE provides key information to make procedures easier or clearer. * Yamaha continually seeks advancements in product design and quality. Therefore, while this manual contains the most current product information available at the time of printing, there may be minor discrepancies between your machine and this manual. If there is any question concerning this manual, please consult your Yamaha dealer. [. . . ] 8 Return the engine to its normal position as soon as the boat is back in deeper water.
000911
cC
Place the gear-shift in the Neutral position before using the shallow water cruising system.
3-25
E
EMU00310
N
PROCEDURE
1) Place the gear shift lever in the neutral position.
2)
Place the tilt lock lever in the release position.
402071
Slightly tilt up the engine. The tiltsupport bar will lock automatically, supporting the engine in a partially raised position. NOTE: This motor has 2 positions for shallow water cruising.
403051
3)
RETURNING TO ORIGINAL POSITION
1) 2) Place the tilt lock lever in the lock position. Slightly tilt up the engine until the tiltsupport bar automatically returns to the free position. Then, slowly lower the engine to the normal position.
3)
402074
3-26
E
EMU00316
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.
3-27
E
EMU00317
Chapter 4 MAINTENANCE
1 2 3 4 5 6
SPECIFICATION DATA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 TRANSPORTING AND STORING OUTBOARD MOTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4 Trailering outboard motor . . . . . . . . . . . . . . . . . . . 4-4 Storing outboard motor . . . . . . . . . . . . . . . . . . . . . . . 4-5 PERIODIC MAINTENANCE. . . . . . . . . . . . . . . . . . . . 4-10 Replacement parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10 Maintenance chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11 Greasing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12 Cleaning and adjusting spark plug . . . 4-14 Checking fuel system . . . . . . . . . . . . . . . . . . . . . . . . . 4-16 Inspecting fuel filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17 Adjusting idling speed . . . . . . . . . . . . . . . . . . . . . . . 4-18 Changing engine oil. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19 Checking timing belt. . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21 Replacing fuse. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22 Checking wiring and connectors. . . . . . . 4-22 Exhaust leakage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22 Water leakage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22 Checking power trim and tilt system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-23 Checking propeller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24 Changing gear oil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-26 Cleaning fuel tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-28 Inspecting and replacing anode(s). . . . 4-29 Checking battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-30 Checking bolts and nuts. . . . . . . . . . . . . . . . . . . . . 4-32 Cleaning cooling-water passages . . . . . 4-33 Motor exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-34 Coating the boat bottom . . . . . . . . . . . . . . . . . . . . 4-34
E
EMU00322*
SPECIFICATION DATA
Model Item DIMENSIONS Overall Length Overall Width Overall Height Transom height Weight PERFORMANCE Full throttle operating range Maximum output Idling speed (Neutral) ENGINE Type Displacement Bore × stroke Ignition system Spark plug Spark plug gap Control system Starting system Valve clearance (cold engine) IN EX Battery capacity Minimum cold crank performance Minimum reserve capacity Alternator output Starting carburetion system DRIVE UNIT Gear positions Gear ratio Trim and tilt system Propeller mark FUEL AND OIL Recommended fuel Fuel tank capacity Recommended engine oil P. O. N. I (US gal, lmp qt) API SAE I (US qt, Imp qt) I (US qt, Imp qt) cm3 (US oz, Imp oz) N·m (kgf·m, lb·ft) N·m (kgf·m, lb·ft) N·m (kgf·m, lb·ft) N·m (kgf·m, lb·ft) Regular unleaded gasoline (Minimum 86) 25 (6. 60, 5. 50) 4-stroke motor oil SE, SF, SG, SH, SJ 10W-30, 10W-40, 20W-40 1. 7 (1. 80, 1. 50) 1. 9 (2. 00, 1. 67) Hypoid gear oil (SAE90) 320 (10. 81, 11. 27) 18 (1. 8, 13) 35 (3. 5, 25) 28 (2. 8, 20) 18 (1. 8, 13) Forward-Neutral-Reverse 2. 08 (27/13) Manual F cm3 (cu. in. ) mm (in. ) NGK mm (in. ) 4-stroke, OHC, L2 498 (30. 39) 65. 0 × 75. 0 (2. 56 × 2. 95) CDI system DPR6EA-9 0. 80. 9 (0. 0310. 035) Tiller control Manual recoil starter 0. 150. 25 (0. 0060. 010) 0. 250. 35 (0. 0100. 014) -- -- -- 12-(80) Prime start r/min kW (HP) @ r/min r/min 5, 0006, 000 18. 4 (25. 0) @ 5, 500 9251, 025 mm (in. ) mm (in. ) mm (in. ) mm (in. ) kg (lb. ) 1, 151 (45. 3) 430 (16. 9) 1, 148 (45. 2)/1, 275 (50. 2)/1, 354(53. 5) 423 (16. 7)/550 (21. 7)/636(25. 0) 62 (137)/64 (141)/66(146) Unit F25MHA
S/L/X S/L/X S/L/X
mm (in. ) mm (in. ) V-Ah Amps at -17. 8°C (0°F) Minutes at 26. 7°C (80°F) V-A (W)
Engine oil capacity (without oil filter) (with oil filter) Recommended gear oil Gear oil capacity TIGHTENING TORQUE Spark plug Propeller nut Engine oil drain bolt Engine oil filter
4-1
E
F25EHA
F25ERA
F25TRA
1, 151 (45. 3) 430 (16. 9) 1, 148 (45. 2)/1, 275 (50. 2)/1, 354 (53. 3) 423 (16. 7)/550 (21. 7)/636 (25. 0) 66 (146)/68 (150)/70 (154) 5, 0006, 000 18. 4 (25. 0) @ 5, 500 875975 4-stroke, OHC, L2 498 (30. 39) 65. 0 × 75. 0 (2. 56 × 2. 95) CDI system DPR6EA-9 0. 80. 9 (0. 0310. 035) Tiller control Electric start 0. 150. 25 (0. 0060. 010) 0. 250. 35 (0. 0100. 014) 12-4070 245 52 12-15 Prime start Forward-Neutral-Reverse 2. 08 (27/13) Manual tilt F
703 (27. 7) 376 (14. 8) 1, 148 (45. 2)/1, 275 (50. 2)/-- 423 (16. 7)/550 (21. 7)/-- 65 (143)/67 (148)/-- 5, 0006, 000 18. 4 (25. 0) @ 5, 500 875975 4-stroke, OHC, L2 498 (30. 39) 65. 0 × 75. 0 (2. 56 × 2. 95) CDI system DPR6EA-9 0. 80. 9 (0. 0310. 035) Remote control Electric start 0. 150. 25 (0. 0060. 010) 0. 250. 35 (0. 0100. 014) 12-4070 245 52 12-15 Prime start Forward-Neutral-Reverse 2. 08 (27/13) Manual tilt F
703 (27. 7) 376 (14. 8) --/1, 275 (50. 2)/-- --/550 (21. 7)/-- --/71 (157)/-- 5, 0006, 000 18. 4 (25. 0) @ 5, 500 875975 4-stroke, OHC, L2 498 (30. 39) 65. 0 × 75. 0 (2. 56 × 2. 95) CDI system DPR6EA-9 0. 80. 9 (0. 0310. 035) Remote control Electric start 0. 150. 25 (0. 0060. 010) 0. 250. 35 (0. 0100. 014) 12-4070 245 52 12-15 Prime start Forward-Neutral-Reverse 2. 08 (27/13) Power trim and tilt F
Regular unleaded gasoline (Minimum 86) 25 (6. 60, 5. 50) 4-stroke motor oil SE, SF, SG, SH, SJ 10W-30, 10W-40, 20W-40 1. 7 (1. 80, 1. 50) 1. 9 (2. 00, 1. 67) Hypoid gear oil (SAE90) 320 (10. 81, 11. 27) 18 (1. 8, 13) 35 (3. 5, 25) 28 (2. 8, 20) 18 (1. 8, 13)
Regular unleaded gasoline (Minimum 86) 25 (6. 60, 5. 50) 4-stroke motor oil SE, SF, SG, SH, SJ 10W-30, 10W-40, 20W-40 1. 7 (1. 80, 1. 50) 1. 9 (2. 00, 1. 67) Hypoid gear oil (SAE90) 320 (10. 81, 11. 27) 18 (1. 8, 13) 35 (3. 5, 25) 28 (2. 8, 20) 18 (1. 8, 13)
Regular unleaded gasoline (Minimum 86) 25 (6. 60, 5. 50) 4-stroke motor oil SE, SF, SG, SH, SJ 10W-30, 10W-40, 20W-40 1. 7 (1. 80, 1. 50) 1. 9 (2. 00, 1. 67) Hypoid gear oil (SAE90) 320 (10. 81, 11. 27) 18 (1. 8, 13) 35 (3. 5, 25) 28 (2. 8, 20) 18 (1. 8, 13)
4-2
E
EMU00322*
SPECIFICATION DATA
Model Item DIMENSIONS Overall Length Overall Width Overall Height Transom height Weight PERFORMANCE Full throttle operating range Maximum output Idling speed (Neutral) ENGINE Type Displacement Bore × stroke Ignition system Spark plug Spark plug gap Control system Starting system Valve clearance (cold engine) IN EX Battery capacity Minimum cold crank performance Minimum reserve capacity Alternator output Starting carburetion system DRIVE UNIT Gear positions Gear ratio Trim and tilt system Propeller mark FUEL AND OIL Recommended fuel Fuel tank capacity Recommended engine oil P. O. N. I (US gal, lmp qt) API SAE I (US qt, Imp qt) I (US qt, Imp qt) cm3 (US oz, Imp oz) N·m (kgf·m, lb·ft) N·m (kgf·m, lb·ft) N·m (kgf·m, lb·ft) N·m (kgf·m, lb·ft) Regular unleaded gasoline (Minimum 86) 25 (6. 60, 5. 50) 4-stroke motor oil SE, SF, SG, SH, SJ 10W-30, 10W-40, 20W-40 1. 9 (2. 00, 1. 67) 2. 1 (2. 22, 1. 85) Hypoid gear oil (SAE90) 430 (14. 54, 15. 14) 18 (1. 8, 13) 35 (3. 5, 25) 28 (2. 8, 20) 18 (1. 8, 13) Forward-Neutral-Reverse 2. 42 (29/12) Power trim and tilt G cm3 (cu. in. ) mm (in. ) NGK mm (in. ) 4-stroke, OHC, L2 498 (30. 39) 65. 0 × 75. 0 (2. 56 × 2. 95) CDI system DPR6EA-9 0. 80. 9 (0. 0310. 035) Remote control Electric start 0. 150. 25 (0. 0060. 010) 0. 250. 35 (0. 0100. 014) 12-4070 245 52 12-15 Prime start r/min kW (HP) @ r/min r/min 5, 0006, 000 18. 4 (25. 0) @ 5, 500 9251, 025 mm (in. ) mm (in. ) mm (in. ) mm (in. ) kg (lb. ) 713 (28. 1) 373 (14. 7) --/1, 311 (51. 6)/1, 425 (56. 1) --/528 (20. 8)/642 (25. 3) --/87 (192)/90 (198) Unit T25TRA
S/L/X S/L/X S/L/X
mm (in. ) mm (in. ) V-Ah Amps at -17. 8°C (0°F) Minutes at 26. 7°C (80°F) V-A (W)
Engine oil capacity (without oil filter) (with oil filter) Recommended gear oil Gear oil capacity TIGHTENING TORQUE Spark plug Propeller nut Engine oil drain bolt Engine oil filter
4-3
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.
EMU00326
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. For further details, consult your Yamaha dealer.
001213
w
8 Never get under the lower unit while it is tilted, even if a motor support bar is used. LUBSTRRT-12-00) alternately into each carburetor. When properly done, the engine will smoke excessively and almost stall.
4-6
E
6) Remove the motor from the water tank. Install the silencer cover and top cowling.
q w
7)
1 Water surface 2 Lowest water level
605024
EMU00342
8 Flushing with the Flushing Attachment
q
cC
Avoid running the outboard at high speed while on the flushing attachment, or overheating could occur. Remove the top cowling and the propeller. 2) Install a flushing attachment 1 to the cooling water inlet. 3) Run the engine at a fast idle for 10~15 minutes supplying fresh water. 4) Just prior to turning off the engine, quickly spray "Yamaha Stor-Rite Engine Fogging Oil" (Part No. LUBSTRRT-12-00) alternately into the silencer cover. When properly done, the engine will smoke excessively and almost stall. 5) Remove the flushing attachment and wipe off any excess water. 6) Install the top cowling and the propeller. [. . . ] If a question or problem arises regarding warranty, first contact the owner of the dealership. Since all warranty matters are handled at the dealer level, this person is in the best position to help you. If you are still not satisfied and require additional assistance, please write: YAMAHA MOTOR CORPORATION U. S. A. CUSTOMER RELATIONS DEPARTMENT P. O. Box 6555 Cypress, California 90630 When contacting Yamaha Motor Corporation, U. S. A. [. . . ]