Yamaha F2.5D Owner'S Manual Download Page 69

Page: 69 / 96

Maintenance

Fuel line

Inspection or replace-
ment as necessary

Fuel pump

Inspection or replace-
ment as necessary

Fuel/engine oil leakage Inspection

Gear oil

Replacement

Greasing points

Greasing

Clamp bracket bolt
(through tube)

Inspection and greas-
ing

Impeller/water pump
housing

Inspection or replace-
ment as necessary

Impeller/water pump
housing

Replacement

Power trim and tilt unit

Inspection

Propeller/propeller
nut/cotter pin

Inspection or replace-
ment as necessary

Shift link/shift cable

Inspection, adjustment
or replacement as nec-
essary

Spark plug(s)

Inspection or replace-
ment as necessary

Spark plug caps/spark
plug wires

Inspection or replace-
ment as necessary

Water from the cooling
water pilot hole

Inspection

Throttle link/throttle
cable/throttle pick-up
timing

Inspection, adjustment
or replacement as nec-
essary

Thermostat

Inspection or replace-
ment as necessary

Timing belt

Inspection or replace-
ment as necessary

Valve clearance

Inspection and adjust-
ment

Cooling water inlet

Inspection

Main switch/stop switch

Inspection or replace-
ment as necessary

Wire harness connec-
tions/wire coupler con-
nections

Inspection or replace-
ment as necessary

Item

Actions

Initial

Every

20 hours

(3 months)

100 hours

(1 year)

300 hours

(3 years)

500 hours

(5 years)

6BP-9-76-1E0.book 63 ページ２０１３年１１月１３日　水曜日　午後６時１１分

Summary of Contents for F2.5D

Page 1: ...Read this manual carefully before operating this outboard motor OWNER S MANUAL F20D F25D FT25F 6BP 28199 76 E0 6BP 9 76 1E0 book 1 ページ２０１３年１１月１３日水曜日午後６時１１分 ...

Page 2: ...manual carefully before operating this outboard motor Keep this manual onboard in a waterproof bag when boating This manual should stay with the outboard motor if it is sold 6BP 9 76 1E0 book 1 ページ２０１３年１１月１３日水曜日午後６時１１分 ...

Page 3: ...es between your machine and this manual If there is any question concerning this manu al please consult your Yamaha dealer To ensure long product life Yamaha recom mends that you use the product and perform the specified periodic inspections and main tenance by correctly following the instruc tions in the owner s manual Any damage resulting from neglect of these instructions is not covered by warr...

Page 4: ...irements 12 Battery specifications 12 Mounting battery 13 Multiple batteries 13 Without a rectifier or Rectifier Regulator 13 Propeller selection 13 Start in gear protection 14 Engine oil requirements 14 Fuel requirements 15 Gasoline 15 Muddy or acidic water 15 Anti fouling paint 15 Motor disposal requirements 15 Emergency equipment 16 Components 17 Components diagram 17 Fuel tank 18 Fuel joint 19...

Page 5: ...ks after starting engine 44 Cooling water 44 Warming up engine 44 Manual start and electric start models 44 Checks after engine warm up 45 Shifting 45 Stop switches 45 Shifting 45 Stopping boat 46 Stopping engine 47 Procedure 47 Trimming outboard motor 47 Adjusting trim angle for manual tilt models 48 Adjusting trim angle Power trim and tilt 49 Adjusting boat trim 49 Tilting up and down 50 Procedu...

Page 6: ... Changing gear oil 72 Cleaning fuel tank 73 Inspecting and replacing anode s 74 Checking battery for electric start models 75 Connecting the battery 75 Disconnecting the battery 76 Trouble Recovery 77 Troubleshooting 77 Temporary action in emergency 80 Impact damage 80 Replacing fuse 80 Power trim and tilt will not operate 81 Starter will not operate 81 Emergency starting engine manual start model...

Page 7: ...ket when the motor is trimmed or tilted Keep body parts out of this area at all times Be sure no one is in this area before operating the power trim and tilt mechanism The power trim and tilt switches operate even when the main switch is off Keep peo ple be away from the switches whenever working around the motor Never get under the lower unit while it is tilt ed even when the tilt support lever i...

Page 8: ...PFD whenever boating At a minimum children and non swimmers should always wear PFDs and everyone should wear PFDs when there are potentially hazardous boating conditions EMU33732 People in the water Always watch carefully for people in the wa ter such as swimmers skiers or divers whenever the engine is running When someone is in the water near the boat shift into neutral and stop the engine Stay a...

Page 9: ...nd stopping the engine or reducing throttle can reduce the ability to steer If you are not sure that you can stop in time before hitting an obstacle apply throttle and turn in another direction EMU33791 Weather Stay informed about the weather Check weather forecasts before boating Avoid boating in hazardous weather EMU33881 Passenger training Make sure at least one other passenger is trained to op...

Page 10: ... in the illustration Re cord this number in the space provided for reference in case you need a new key EMU37292 EC Declaration of Conformity DoC This outboard motor conforms to certain por tions of the European Parliament directive relating to machinery Each conformed outboard motor accompa nied with EC DoC EC DoC contains the fol lowing information Name of Engine Manufacture Model name Product c...

Page 11: ...General information 5 1 CE marking location 1 CE marking location 1 ZMU06473 1 ZMU06391 ZMU06040 6BP 9 76 1E0 book 5 ページ２０１３年１１月１３日水曜日午後６時１１分 ...

Page 12: ... any manuals supplied with the boat Read all labels on the outboard motor and the boat If you need any additional information contact your Yamaha dealer EMU33834 Warning labels If these labels are damaged or missing contact your Yamaha dealer for replacements F25DMH ZMU06594 1 2 3 6BP 9 76 1E0 book 6 ページ２０１３年１１月１３日水曜日午後６時１１分 ...

Page 13: ...General information 7 F20DET F25DE F25DET FT25FET 3 1 2 ZMU06593 6BP 9 76 1E0 book 7 ページ２０１３年１１月１３日水曜日午後６時１１分 ...

Page 14: ...s hair and clothing away from rotating parts while the engine is running Do not touch or remove electrical parts when starting or during operation 3 WARNING EWM01672 Read Owner s Manuals and labels Wear an approved personal flotation device PFD Attach engine shut off cord lanyard to your PFD arm or leg so the engine stops if you accidentally leave the helm which could prevent a runaway boat ZMU057...

Page 15: ...arning Read Owner s Manual Hazard caused by continuous rotation Electrical hazard Remote control lever gear shift lever operat ing direction dual direction Engine start Engine cranking ZMU05696 ZMU05664 ZMU05665 ZMU05666 ZMU05667 ZMU05668 6BP 9 76 1E0 book 9 ページ２０１３年１１月１３日水曜日午後６時１１分 ...

Page 16: ...height S F25DE 423 mm 16 7 in F25DMH 423 mm 16 7 in Motor transom height L F20DET 550 mm 21 7 in F25DE 550 mm 21 7 in F25DET 550 mm 21 7 in F25DMH 550 mm 21 7 in FT25FET 536 mm 21 1 in Dry weight AL S F25DE 78 kg 172 lb F25DMH 77 kg 170 lb Dry weight AL L F20DET 82 kg 181 lb F25DE 79 kg 174 lb F25DET 82 kg 181 lb F25DMH 78 kg 172 lb FT25FET 92 kg 203 lb Performance Full throttle operating range F2...

Page 17: ...rim and tilt system F20DET Power trim and tilt F25DE Manual tilt F25DET Power trim and tilt F25DMH Manual tilt FT25FET Power trim and tilt Propeller mark F20DET F F25DE F F25DET F F25DMH F FT25FET G Fuel and oil Recommended fuel Regular unleaded gasoline Min research octane number RON 90 Fuel tank capacity 25 L 6 60 US gal 5 50 Imp gal Recommended engine oil YAMALUBE 4 or 4 stroke outboard motor o...

Page 18: ...ling loss of control or fire hazards Because the motor is very heavy spe cial equipment and training is required to mount it safely Your dealer or other person experienced in proper rigging should mount the motor using correct equipment and complete rigging in structions For further information see page 31 EMU33582 Remote control requirements WARNING EWM01581 If the engine starts in gear the boat ...

Page 19: ...propeller is one of the most im portant purchasing decisions a boater can make The type size and design of your pro peller have a direct impact on acceleration top speed fuel economy and even engine life Yamaha designs and manufactures pro pellers for every Yamaha outboard motor and every application Your outboard motor came with a Yamaha propeller selected to perform well over a range of applicat...

Page 20: ...l grade 2 1 Propeller diameter in inches 2 Propeller pitch in inches 3 Type of propeller propeller mark 1 Propeller diameter in inches 2 Propeller pitch in inches 3 Type of propeller propeller mark ZMU04605 x 1 2 3 ZMU04606 x 1 2 3 Recommended engine oil YAMALUBE 4 or 4 stroke outboard motor oil Recommended engine oil grade 1 SAE 10W 30 10W 40 5W 30 API SE SF SG SH SJ SL Recommended engine oil gra...

Page 21: ...nstall a water separating marine fuel filter assembly 10 mi cron minimum between your boat s fuel tank and outboard motor when using ethanol Ethanol is known to allow moisture to be ab sorbed into boat fuel tanks and systems Moisture in the fuel can cause corrosion of metallic fuel system components starting and running complaints and require addition al fuel system maintenance EMU36881 Muddy or a...

Page 22: ...board motor A tool kit with assorted screwdrivers pli ers wrenches including metric sizes and electrical tape Waterproof flashlight with extra batteries An extra engine shut off cord lanyard with clip Spare parts such as an extra set of spark plugs Consult your Yamaha dealer for details 6BP 9 76 1E0 book 16 ページ２０１３年１１月１３日水曜日午後６時１１分 ...

Page 23: ...ver 3 Idle hole 4 Drain screw 5 Anti cavitation plate 6 Trim tab 7 Propeller 8 Cooling water inlet 9 Trim rod 10 Clamp bracket 11 Restraint cable attachment 12 Manual starter handle 13 Gear shift lever 14 Throttle grip 15 Throttle friction adjuster 16 Engine stop button Engine shut off switch 17 Clip 18 Alert indicator 19 Clamp screw 20 Steering friction adjuster 21 Tilt lock lever 22 Flushing dev...

Page 24: ...o relevant licensing or approval authority regula tions 1 2 10 3 5 6 7 8 12 13 11 18 4 17 9 11 13 16 15 14 ZMU06602 1 Top cowling 2 Cowling lock lever 3 Idle hole 4 Drain screw 5 Anti cavitation plate 6 Trim tab 7 Propeller 8 Cooling water inlet 9 Clamp bracket 10 Power trim and tilt switch 11 Alert indicator 12 Tilt support knob 13 Flushing device 14 Restraint cable attachment 15 Clamp screw 16 T...

Page 25: ...hifter and the throttle The electrical switch es are mounted on the remote control box EMU26191 Remote control lever Moving the lever forward from the neutral po sition engages forward gear Pulling the le ver back from neutral engages reverse The engine will continue to run at idle until the le ver is moved about 35 a detent can be felt Moving the lever farther opens the throttle and the engine wi...

Page 26: ...l operate only when the neutral throttle lever is in the closed position EMU25914 Tiller handle To change direction move the tiller handle to the left or right as necessary EMU25925 Gear shift lever Move the gear shift lever forward to engage the forward gear or rearward to engage the reverse gear EMU25943 Throttle grip The throttle grip is on the tiller handle Turn the grip counterclockwise to in...

Page 27: ...emote control lever or throttle grip which could result in an accident EWM00033 When constant speed is desired tighten the adjuster to maintain the desired throttle set ting EMU25996 Engine shut off cord lanyard and clip The clip must be attached to the engine shut off switch for the engine to run The cord should be attached to a secure place on the operator s clothing or arm or leg Should the ope...

Page 28: ...ter handle is used to crank and start the engine EMU26092 Main switch The main switch controls the ignition system its operation is described below off With the main switch in the off posi tion the electrical circuits are off and the key can be removed on With the main switch in the on posi tion the electrical circuits are on and the key cannot be removed start With the main switch in the start po...

Page 29: ...d to the specified torque TIP Steering movement is blocked when the adjuster lever is set to the A position Check the tiller handle for smooth move ment when the lever is turned to the star board side B Do not apply lubricants such as grease to the friction areas of the steering friction ad juster EMU32054 Power trim and tilt switch on remote control The power trim and tilt system adjusts the outb...

Page 30: ...ision with another boat or an obstacle EMU26245 Trim tab with anode WARNING EWM00841 An improperly adjusted trim tab could cause difficult steering Always test run after the trim tab has been installed or re placed to be sure steering is correct Be sure you have tightened the bolt after ad justing the trim tab The trim tab should be adjusted so that the steering control can be turned to either the...

Page 31: ...rim tab rear end to the port side A in the figure If the boat tends to veer to the right star board side turn the trim tab end to the star board side B in the figure EMU26263 Trim rod tilt pin The position of the trim rod determines the minimum trim angle of the outboard motor in relation to the transom EMU30441 Tilt lock mechanism The tilt lock mechanism is used to prevent the outboard motor from...

Page 32: ... position EMU26334 Tilt support bar The tilt support bar keeps the outboard motor in the tilted up position NOTICE ECM01661 Do not use the tilt support bar when trailering the boat The outboard motor could shake loose from the tilt support and fall If the motor cannot be trailered in the normal running position use an addi tional support device to secure it in the tilt position EMU26374 Cowling lo...

Page 33: ...TIP For details on usage see page 59 EMU26305 Alert indicator If the engine develops a condition which is cause for alert the indicator lights up For details on how to read the alert indicator see page 29 1 Cowling lock lever s 1 Flushing device 1 ZMU04041 1 ZMU06505 1 Alert indicator 1 ZMU06506 6BP 9 76 1E0 book 27 ページ２０１３年１１月１３日水曜日午後６時１１分 ...

Page 34: ...e alert indicator does not indicate the engine oil level Use the oil dipstick to check the re maining oil quantity For further infor mation see page 36 EMU36034 Overheat alert indicator If the engine temperature rises too high this indicator will light up For further information on reading the indicator see page 29 NOTICE ECM00053 Do not continue to run the engine if the overheat alert indicator i...

Page 35: ...if equipped on the tiller handle remote control box or main switch panel If the alert system has activated stop the en gine and check the cooling water inlets Check trim angle to be sure that the cool ing water inlet is submerged Check the cooling water inlet for clogging EMU3016C Low oil pressure alert If the oil pressure drops too low the alert de vice will activate The engine speed will automat...

Page 36: ...ctivated stop the en gine as soon as it is safe to do so Check the oil level and add oil as needed If the oil level is correct and the alert device does not switch off consult your Yamaha dealer ZMU02360 6BP 9 76 1E0 book 30 ページ２０１３年１１月１３日水曜日午後６時１１分 ...

Page 37: ...motor EMU33471 Mounting the outboard motor The outboard motor should be mounted so that the boat is well balanced Otherwise the boat could be hard to steer For single en gine boats mount the outboard motor on the centerline keel line of the boat EMU26926 Mounting height To run your boat at optimum efficiency the water resistance drag of the boat and out board motor must be made as little as possi ...

Page 38: ...f the outboard motor see page 47 EMU26974 Clamping the outboard motor 1 Place the outboard motor on the tran som so that it is positioned as close to the center as possible Tighten the tran som clamp screws evenly and securely Occasionally check the clamp screws for tightness during operation of the out board motor because they could be come loose due to engine vibration WARNING Loose clamp screws...

Page 39: ...hey must be of at least the same quality of material and strength and must be tightened se curely After tightening test run the engine and check their tightness EWM00652 1 Bolts ZMU02637 1 6BP 9 76 1E0 book 33 ページ２０１３年１１月１３日水曜日午後６時１１分 ...

Page 40: ...to wear in evenly TIP Run the engine in the water under load in gear with a propeller installed as follows For 10 hours for breaking in engine avoid ex tended idling rough water and crowded ar eas 1 For the first hour of operation Run the engine at varying speeds up to 2000 r min or approximately half throttle 2 For the second hour of operation Increase engine speed as much as nec essary to put th...

Page 41: ...sourc es of ignition WARNING EWM00911 Leaking fuel can result in fire or explo sion Check for fuel leakage regularly If any fuel leakage is found the fuel system must be repaired by a qualified mechanic Improper repairs can make the outboard unsafe to operate EMU36452 Check for fuel leaks Check for fuel leaks or gasoline fumes in the boat Check for fuel leakage from the fuel sys tem Check the fuel...

Page 42: ...complete range of motion and each le ver should return completely to the idle po sition Look for loose or damaged connections of the throttle and shift cables EMU36484 Engine shut off cord lanyard Inspect the engine shut off cord and clip for damage such as cuts breaks and wear EMU40994 Engine oil 1 Place the outboard motor in a vertical position not tilted NOTICE If the out board motor is not lev...

Page 43: ...y connected cooling water can leak out and the engine can overheat during oper ation ECM01802 EMU36956 Install top cowling 1 Be sure that the cowling lock lever is re leased 2 Be sure that the rubber seal is seated all the way around the top cowling 3 Place the top cowling on the bottom cowling 4 Check to be sure the rubber seal is seat ed correctly between the top cowling and the bottom cowling 5...

Page 44: ...tboard motor up and check that the trim and tilt rod is pushed out completely 4 Check that the trim and tilt rod is free of corrosion or other flaws 5 Tilt the outboard motor down Check that the trim and tilt rod operates smoothly EMU36583 Battery Check that the battery is in good condition and fully charged Check that the battery connections are clean secure and covered by insulating covers The e...

Page 45: ...fuel use only an approved GASOLINE container 7 Touch the fuel nozzle to the filler open ing or funnel to help prevent electrostatic sparks 8 Fill the fuel tank but do not overfill WARNING Do not overfill Otherwise fuel can expand and overflow if the temperature increases EWM02611 9 Tighten the filler cap securely 10 Wipe up any spilled gasoline immediate ly with dry rags Dispose rags properly acco...

Page 46: ...otor and firmly connect the fuel line to the joint while pinching the joint Then firmly connect the other end of the fuel line to the joint on the fuel tank TIP Wipe up any spilled gasoline immediately with dry rags Dispose rags properly accord ing to local laws or regulations 3 Squeeze the primer pump with the ar row pointing up until you feel it become firm During engine operation place the tank...

Page 47: ...ects in the boat to be thrown forward Starting procedure cold engine 1 Place the gear shift lever in neutral TIP The start in gear protection device prevents the engine from starting except when in neu tral 2 Attach the engine shut off cord to a se cure place on your clothing or your arm or leg Then install the clip on the other end of the cord into the engine shut off switch 3 Place the throttle ...

Page 48: ... switch 3 Open the throttle grip as shown in the il lustration TIP If the throttle is opened too much the en gine speed rises rapidly causing the out board motor to swivel toward the starboard side Do not repeat opening and closing of the throttle grip as this cause the spark plug to wet with fuel and prevent from the engine to start 4 Hold this throttle grip position by tighten ing the throttle f...

Page 49: ... not attach the cord to clothing that could tear loose Do not route the cord where it could become entangled pre venting it from functioning Avoid accidentally pulling the cord dur ing normal operation Loss of engine power means the loss of most steering control Also without engine power the boat could slow rapidly This could cause people and objects in the boat to be thrown forward 1 Place the re...

Page 50: ...he cooling water pilot hole A continuous flow of water from the pilot hole indicates that the water pump is pumping water through the cooling water passages If the cooling water passages are frozen it may take a while for water to start flowing out of the pilot hole NOTICE ECM01811 If water is not flowing out of the pilot hole at all times while the engine is running overheating and serious damage...

Page 51: ...WARNING EWM00181 Before shifting make sure there are no swimmers or obstacles in the water near you NOTICE ECM01611 Warm up the engine before shifting into gear Until the engine is warm the idle speed may be higher than normal High idle speed can prevent you from shifting back to neutral If this occurs stop the engine shift to neutral then restart the engine and allow it to warm up To shift out of...

Page 52: ...n to slow down or stop the boat as it could cause you to lose control be ejected or im pact the steering wheel or other parts of the boat This could increase the risk of serious injury It could also damage the shift mechanism Do not shift into reverse while traveling at planing speeds Loss of control boat swamping or damage to the boat could occur The boat is not equipped with a separate braking s...

Page 53: ...ew on the fuel tank cap if equipped 4 Remove the key if the boat will be left un attended TIP The engine can also be stopped by pulling the cord and removing the clip from the en gine shut off switch then turning the main switch to off EMU27863 Trimming outboard motor WARNING EWM00741 Excessive trim for the operating condi tions either trim up or trim down can cause boat instability and can make s...

Page 54: ...moving or installing the rod Use caution when trying a trim position for the first time Increase speed gradu ally and watch for any signs of instabil ity or control problems Improper trim angle can cause loss of control There are 4 or 5 holes provided in the clamp bracket to adjust the outboard motor trim an gle 1 Stop the engine 2 Tilt the outboard motor up and remove the trim rod by pressing cli...

Page 55: ...raise the bow trim out press the switch up To lower the bow trim in press the switch down Make test runs with the trim set to different angles to find the position that works best for your boat and operating conditions EMU27913 Adjusting boat trim When the boat is on plane a bow up attitude results in less drag greater stability and effi ciency This is generally when the keel line of the boat is u...

Page 56: ...re duce salt corrosion WARNING EWM00223 Make sure that no one is near the out board motor when tilting the outboard motor up or down Otherwise body parts could be crushed between the outboard motor and the clamp bracket WARNING EWM00251 Leaking fuel is a fire hazard If there is a fuel joint on the outboard motor discon nect the fuel line or close the fuel cock if the engine will be tilted for more...

Page 57: ...e tilt support lever or knob when trailering the boat The outboard motor could shake loose from the tilt support and fall If the motor cannot be trailered in the normal running position use an additional support device to secure it in the tilt position For more detailed information see page 56 ECM01642 EMU44660 Procedure for tilting up power trim and tilt models 1 Place the remote control lever in...

Page 58: ...tor cannot be trailered in the nor mal running position use an addi tional support device to secure it in the tilt position For more detailed in formation see page 56 ECM01642 EMU30193 Procedure for tilting down manual tilt models 1 Place the tilt lock lever in the lock posi tion 2 Slightly tilt the engine up until the tilt sup port bar is automatically released 3 Slowly tilt the engine down EMU44...

Page 59: ...motor to lift out of the water resulting in loss of control Use extra care when operating in re verse Too much reverse thrust can cause the outboard motor to lift out of the water increasing the chance of ac cident and personal injury NOTICE ECM00261 Do not tilt the outboard motor up so that the cooling water inlet on the lower unit is above the surface of the water when set ting up for and cruisi...

Page 60: ...k down position then slightly tilt the outboard motor up until the tilt support bar auto matically returns to the free position 6 Slowly lower the outboard motor to the normal position EMU32852 Power trim and tilt models The outboard motor can be tilted up partially to allow operation in shallow water NOTICE ECM00261 Do not tilt the outboard motor up so that the cooling water inlet on the lower un...

Page 61: ... and slowly tilt the out board motor down EMU28196 Cruising in other conditions Cruising in salt water After operating in salt water flush the cooling water passages with fresh water to prevent them from becoming clogged Also rinse the outside of the outboard motor with fresh wa ter Cruising in muddy turbid or acidic water Yamaha strongly recommends that you use the optional chromium plated water ...

Page 62: ...ion NOTICE ECM02441 When storing the outboard motor for pro longed time fuel must be drained from the fuel tank The deteriorated fuel could clog the fuel line causing engine start dif ficulty or malfunction When storing or transporting the outboard motor make sure to follow the procedure list ed below Disconnect the fuel line from the outboard motor Tighten the fuel tank cap and its air vent screw...

Page 63: ...use engine trou ble Store the outboard motor in a dry well ventilated place not in direct sunlight EMU28306 Procedure EMU38871 Flushing in a test tank NOTICE ECM02131 Do not run the engine without supplying it with cooling water Either the engine water pump will be damaged or the en gine will be damaged from overheating Cooling system flushing is essential to pre vent the cooling system from clogg...

Page 64: ...rn the flywheel magnet several times with starter motor or by pulling the manual starter handle to coat the cylinder wall with oil 7 Remove the outboard motor from the test tank 8 Drain the cooling water completely out of the motor Clean the body thoroughly 9 Install the top cowling 10 Store the fuel tank in a dry well ventilat ed place not in direct sunlight EMU28403 Lubrication 1 Install the spa...

Page 65: ...tor from the fit ting on the bottom cowling 2 Screw the garden hose adapter onto a garden hose which is connected to a fresh water supply and then connect it to the garden hose connector 3 With the engine off turn on the water tap and let the water flush through the cool ing passages for about 15 minutes Turn off the water and disconnect the garden hose adapter from the garden hose con nector 4 Re...

Page 66: ...hanical skills tools and supplies If you do not have the proper skills tools or supplies to perform a maintenance procedure have a Yamaha dealer or other qualified mechanic do the work The procedures involve disassembling the motor and exposing dangerous parts To reduce the risk of injury from moving hot or electrical parts Turn off the engine and keep the key s and engine shut off cord lanyard wi...

Page 67: ...up and cool down Frequent quick acceleration and decelera tion Frequent shifting Frequently starting and stopping the en gine s Operation that fluctuates often between light and heavy cargo loads Outboard motors operating under any of these above conditions require more fre quent maintenance Yamaha recommends that you do this service twice as often as specified in the maintenance chart For ex ampl...

Page 68: ...ater after each use The symbol indicates the check ups which you may carry out yourself The symbol indicates work to be carried out by your Yamaha dealer Item Actions Initial Every 20 hours 3 months 100 hours 1 year 300 hours 3 years 500 hours 5 years Anode s external Inspection or replace ment as necessary Anode s cylinder head Inspection or replace ment as necessary Anodes exhaust cover exhaust ...

Page 69: ...plug s Inspection or replace ment as necessary Spark plug caps spark plug wires Inspection or replace ment as necessary Water from the cooling water pilot hole Inspection Throttle link throttle cable throttle pick up timing Inspection adjustment or replacement as nec essary Thermostat Inspection or replace ment as necessary Timing belt Inspection or replace ment as necessary Valve clearance Inspec...

Page 70: ...an every 500 hours Fuel tank Yamaha por table tank Inspection and clean ing as necessary Item Actions Every 1000 hours Exhaust guide exhaust manifold Inspection or replace ment as necessary Timing belt Replacement Item Actions Initial Every 20 hours 3 months 100 hours 1 year 300 hours 3 years 500 hours 5 years 6BP 9 76 1E0 book 64 ページ２０１３年１１月１３日水曜日午後６時１１分 ...

Page 71: ...Maintenance 65 EMU28944 Greasing Yamaha grease A water resistant grease Yamaha grease D corrosion resistant grease for propeller shaft F25DMH ZMU06554 6BP 9 76 1E0 book 65 ページ２０１３年１１月１３日水曜日午後６時１１分 ...

Page 72: ...any problems yourself Instead take the outboard motor to a Yamaha dealer You should periodically re move and inspect the spark plug because heat and deposits will cause the spark plug to slowly break down and erode 1 Remove the spark plug caps from the spark plugs 2 Remove the spark plug If electrode ero sion becomes excessive or if carbon and other deposits are excessive you should replace the sp...

Page 73: ...l filter consult your Yamaha dealer EMU29045 Inspecting idle speed WARNING EWM00452 Do not touch or remove electrical parts when starting or during operation Keep hands hair and clothes away from the flywheel and other rotating parts while the engine is running NOTICE ECM00491 This procedure must be performed while the outboard motor is in the water A flushing attachment or test tank can be used I...

Page 74: ...r to change the engine oil If an oil changer is not available drain the engine oil by removing the drain screw If you are not familiar with the proce dure for changing the engine oil consult your Yamaha dealer 1 Put the outboard motor in an upright po sition not tilted NOTICE If the out board motor is not level the oil level indicated on the oil dipstick may not be accurate ECM01862 2 Start the en...

Page 75: ...level is above the upper level mark drain until the level meets the specified capacity ECM01851 9 Leave the outboard motor for 5 10 min utes 10 Remove the oil dipstick and wipe it clean 11 Insert the dipstick and remove it again Be sure to completely insert the dipstick into the dipstick guide otherwise the oil level measurement will be incorrect 12 Recheck the oil level using the dipstick to be s...

Page 76: ... extended trolling EMU29115 Inspecting wiring and connectors Inspect that each connector is engaged securely Inspect that each ground lead is properly secured EMU32113 Checking propeller WARNING EWM01882 You could be seriously injured if the en gine accidentally starts when you are near the propeller Before inspecting re moving or installing the propeller place the shift control in neutral turn th...

Page 77: ...ut using a pair of pliers 2 Remove the propeller nut washer and spacer if equipped WARNING Do not use your hand to hold the propel ler when loosening the propeller nut EWM01891 3 Remove the propeller washer if equipped and thrust washer EMU30673 Installing propeller EMU29235 Spline models NOTICE ECM00502 Make sure to use a new cotter pin and ZMU01897 1 Cotter pin 2 Propeller nut 3 Washer 4 Spacer ...

Page 78: ...cified torque tighten the nut further to align it with the hole EMU2928C Changing gear oil WARNING EWM00801 Be sure the outboard motor is securely fastened to the transom or a stable stand You could be severely injured if the outboard motor falls on you Never get under the lower unit while it is tilted even when the tilt support lever or knob is locked Severe injury could occur if the outboard mot...

Page 79: ...rain screw EMU29304 Cleaning fuel tank WARNING EWM00921 Gasoline is highly flammable and its va pors are flammable and explosive If you have any question about properly doing this procedure consult your Yamaha dealer Keep away from sparks cigarettes flames or other sources of ignition when cleaning the fuel tank Remove the fuel tank from the boat be fore cleaning it Work only outdoors in an area w...

Page 80: ...he end of the suction pipe in a suitable cleaning sol vent Allow the filter to dry 5 Replace the gasket with a new one Re install the fuel joint assembly and tighten the screws firmly EMU29317 Inspecting and replacing anode s Yamaha outboard motors are protected from corrosion by sacrificial anodes Inspect the external anodes periodically Remove scales from the surfaces of the anodes Consult a Yam...

Page 81: ...lectrolyte level 2 Check the battery s charge If your boat is equipped with the digital speedome ter the voltmeter and low battery alert functions will help you monitor the bat tery s charge If the battery needs charg ing consult your Yamaha dealer 3 Check the battery connections They should be clean secure and covered by an insulating cover WARNING Bad connections can produce shorting or arcing a...

Page 82: ...lectrical system can be damaged ECM01931 2 Disconnect the negative cable s from the negative terminal NOTICE Al ways disconnect all negative ca bles first to avoid a short circuit and damage to the electrical system ECM01941 3 Disconnect the positive cable s and re move the battery from the boat 4 Clean maintain and store the battery according to the manufacturer s instruc tions 1 Red cable 2 Blac...

Page 83: ...ha dealer Q Is shift lever in gear A Shift to neutral Engine will not start starter operates Q Is fuel tank empty A Fill tank with clean fresh fuel Q Is fuel contaminated or stale A Fill tank with clean fresh fuel Q Is fuel filter clogged A Clean or replace filter Q Is starting procedure incorrect A See page 40 Q Has fuel pump malfunctioned A Have serviced by a Yamaha dealer Q Are spark plug s fou...

Page 84: ...r Q Is air vent screw on fuel tank closed A Open air vent screw Q Is choke knob pulled out A Return to home position Q Is motor angle too high A Return to normal operating position Q Is carburetor clogged A Have serviced by a Yamaha dealer Q Is fuel joint connection incorrect A Connect correctly Q Is throttle valve adjustment incorrect A Have serviced by a Yamaha dealer Q Is battery cable disconne...

Page 85: ... s Clean or replace with recommended type Q Are weeds or other foreign matter tangled on gear housing A Remove foreign matter and clean lower unit Q Is fuel system obstructed A Check for pinched or kinked fuel line or other obstructions in fuel system Q Is fuel filter clogged A Clean or replace filter Q Is fuel contaminated or stale A Fill tank with clean fresh fuel Q Is spark plug gap incorrect A...

Page 86: ...9442 Impact damage WARNING EWM00871 The outboard motor can be seriously damaged by a collision while operating or trailering Damage could make the out board motor unsafe to operate If the outboard motor hits an object in the wa ter follow the procedure below 1 Stop the engine immediately 2 Check the control system and all compo nents for damage Also check the boat for damage 3 Whether damage is fo...

Page 87: ... EWM01023 Use this procedure only in an emergen cy to return to the nearest port for re pairs When the emergency starter rope is used to start the engine the start in gear protection device does not oper ate Make sure the remote control lever is in neutral Otherwise the boat could unexpectedly start to move which could result in an accident Attach the engine shut off cord to a se cure place on you...

Page 88: ...r rope only as instructed Do not touch the fly wheel or other moving parts when the engine is running Do not install the starter mechanism or top cowling after the engine is running Do not touch the ignition coil spark plug wire spark plug cap or other elec trical components when starting or op erating the motor You could get an electrical shock EMU38841 Emergency starting engine manual start mode...

Page 89: ... straight out to crank and start the engine If the engine does not start on the first try repeat the procedure TIP If the engine does not start on the first try repeat the procedure If the engine fails to start after 4 or 5 tries open the throttle a small amount between 1 8 and 1 4 and try again Also if the engine is warm and fails to start open the throttle a same amount and try to start the engi...

Page 90: ...n neutral and that the clip is attached to the en gine shut off switch The main switch must be on if equipped 5 Insert the knotted end of the emergency starter rope into the notch in the flywheel magnet and wind the rope 1 or 2 turn s around the flywheel magnet clockwise 6 Pull the rope slowly until resistance is felt Give a strong pull straight out to crank and start the engine If the engine does...

Page 91: ...nd try to start the engine again If the engine still fails to start see page 40 Slowly return the throttle grip to the fully closed position so that the engine does not stall EMU33502 Treatment of submerged motor If the outboard motor is submerged immedi ately take it to a Yamaha dealer Otherwise some corrosion may begin almost immedi ately NOTICE Do not attempt to run the outboard motor until it ...

Page 92: ...k 1 Emergency equipment 16 Emergency starting engine electric start model 84 Emergency starting engine manual start model 82 Emergency temporary action in 80 Engine checking 37 Engine oil 36 Engine oil changing 68 Engine oil filling 34 Engine oil requirements 14 Engine shut off cord lanyard 1 36 Engine shut off cord lanyard and clip 21 Engine stop button 22 F Filling fuel 38 First time operation 3...

Page 93: ...e control 23 Power trim and tilt system checking 38 Power trim and tilt will not operate 81 Propeller 1 Propeller checking 70 Propeller installing 71 Propeller removing 71 Propeller selection 13 R Read manuals and labels 6 Rectifier Regulator optional 13 Remote control box 19 Remote control lever 19 Remote control requirements 12 Replacement parts 60 Rotating parts 1 S Sending fuel portable tank 4...

Page 94: ...ing and storing outboard motor 56 Trimming outboard motor 47 Trim rod tilt pin 25 Trim tab 25 Trim tab with anode 24 Troubleshooting 77 W Warming up engine 44 Warning labels 6 Weather 3 Wiring and connectors inspecting 70 6BP 9 76 1E0 book 88 ページ２０１３年１１月１３日水曜日午後６時１１分 ...

Page 95: ...6BP 9 76 1E0 book 89 ページ２０１３年１１月１３日水曜日午後６時１１分 ...

Page 96: ...Printed on recycled paper Printed in Japan December 2013 0 5 1 6BP 9 76 1E0 book 1 ページ２０１３年１１月１３日水曜日午後６時１１分 ...

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Yamaha F2.5D, Owner'S Manual

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