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Maintenance

46

Starting system:

F6MHD Manual 
F8MHD Manual 
T8PRD Electric 
T8PHD Electric 
T8EHD Manual and electric

Starting carburetion system:

Choke valve

Valve clearance (cold engine) IN:

0.15–0.20 mm (0.0059–0.0079 in)

Valve clearance (cold engine) EX:

0.20–0.25 mm (0.0079–0.0098 in)

Battery:

Min. cold cranking amps (CCA/SAE):

T8PRD 245.0 A 
T8PHD 245.0 A 
T8EHD 245.0 A

Min. marine cranking amps (MCA/ABYC):

T8PRD 323.0 A 
T8PHD 323.0 A 
T8EHD 323.0 A

Min. reserve capacity (RC/SAE):

T8PRD 52 minutes 
T8PHD 52 minutes 
T8EHD 52 minutes

Alternator output for battery DC:

6.0 A

Drive unit:

Gear positions:

Forward-neutral-reverse

Gear ratio:

F6MHD 2.08 (27/13) 
F8MHD 2.08 (27/13) 
T8PRD 2.92 (38/13) 
T8PHD 2.92 (38/13) 
T8EHD 2.92 (38/13)

Trim and tilt system:

F6MHD Manual tilt 
F8MHD Manual tilt 
T8PRD Power tilt 
T8PHD Power tilt 
T8EHD Manual tilt

Propeller mark:

F6MHD N 
F8MHD N 
T8PRD R 
T8PHD R 
T8EHD R

Fuel and oil:

Recommended fuel:

Unleaded regular gasoline

Min. pump octane:

86

Recommended engine oil:

4-stroke outboard motor oil

Engine oil grade API:

API SE, SF, SG, SH, SJ

Engine oil type SAE:

SAE10W30 or SAE10W40

Lubrication:

Wet sump

Engine oil quantity (excluding oil filter):

0.8 L (0.85 US qt) (0.70 Imp.qt)

Recommended gear oil:

Hypoid gear oil SAE#90

Gear oil quantity:

F6MHD 150.0 cm³ (5.07 US oz) (5.29 Imp.oz)
F8MHD 150.0 cm³ (5.07 US oz) (5.29 Imp.oz)
T8PRD 370.0 cm³ (12.51 US oz) (13.05 
Imp.oz) 
T8PHD 370.0 cm³ (12.51 US oz) (13.05 
Imp.oz) 
T8EHD 370.0 cm³ (12.51 US oz) (13.05 
Imp.oz)

Tightening torque for engine:

Spark plug:

25.0 Nm (18.4 ft-lb) (2.55 kgf-m)

Propeller nut:

F6MHD 17.0 Nm (12.5 ft-lb) (1.73 kgf-m)
F8MHD 17.0 Nm (12.5 ft-lb) (1.73 kgf-m)
T8PRD 21.0 Nm (15.5 ft-lb) (2.14 kgf-m) 
T8PHD 21.0 Nm (15.5 ft-lb) (2.14 kgf-m) 
T8EHD 21.0 Nm (15.5 ft-lb) (2.14 kgf-m)

Engine oil drain bolt:

24.0 Nm (17.7 ft-lb) (2.45 kgf-m)

EMU28222

Transporting and storing 

outboard motor

WARNING

EWM00690

Leaking fuel is a fire hazard. When trans-
porting and storing the outboard motor,
close the air vent screw and fuel cock to
prevent fuel from leaking.

USE CARE when transporting fuel tank,
whether in a boat or car.

U60R10E0.book  Page 46  Monday, June 21, 2004  9:34 AM

Summary of Contents for F6D

Page 1: ...F6D...

Page 2: ...ZMU01690...

Page 3: ...CAUTION ECM00700 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 Yamaha conti...

Page 4: ...throttle lever 16 Choke switch 16 Tiller handle 16 Gear shift lever 16 Throttle grip 17 Throttle indicator 17 Throttle friction adjuster 17 Engine stop lanyard switch 18 Engine stop button 18 Choke kn...

Page 5: ...49 Battery care 49 Flushing power unit 50 Cleaning the outboard motor 51 Checking painted surface of motor 51 Periodic maintenance 51 Replacement parts 51 Maintenance chart 52 Maintenance chart addit...

Page 6: ...ure 72 Consumer information 74 Important warranty information for U S A and Canada 74 YAMAHA MOTOR CORPORATION U S A FOUR STROKE OUTBOARD MOTOR THREE YEAR LIMITED WARRANTY 76 IMPORTANT WARRANTY INFORM...

Page 7: ...ey number If a main key switch is equipped with the mo tor the key identification number is stamped on your key as shown in the illustration Record this number in the space provided for reference in c...

Page 8: ...description of your particular label EMU25280 One Star Low Emission The one star label identifies engines that meet the Air Resources Board s 2001 ex haust emission standards Engines meeting these sta...

Page 9: ...Before operating the boat read any own er s or operator s manuals supplied with it and all labels Be sure you understand each item before operating Do not overpower the boat with this out board motor...

Page 10: ...weather Tell someone where you are going leave a Float Plan with a responsible person Be sure to cancel the Float Plan when you re turn Use common sense and good judgment when boating Know your abili...

Page 11: ...ally and are also enforced by the Unit ed States Coast Guard and local agencies You should be aware of these rules and fol low them whenever you encounter another vessel on the water Several sets of r...

Page 12: ...anger In other words follow the standard rules ex cept when a collision will occur unless both vessels try to avoid each other If that is the case both vessels become Give Way ves sels EMU25520 Rules...

Page 13: ...uld sound the whistle Even if no reply is heard however the vessel should still pro ceed around the bend with caution If you nav igate such waters with your boat you will need to carry a portable air...

Page 14: ...e boundaries of a particular state The Uniform State Waterway Marking System has been devised for these waters This system uses buoys and signs with dis tinctive shapes and colors to show regulatory o...

Page 15: ...010 GASOLINE AND ITS VAPORS ARE HIGH LY FLAMMABLE AND EXPLOSIVE Do not smoke when refueling and keep away from sparks flames or other sources of ignition Stop engine before refueling Refuel in a well...

Page 16: ...ine or premium unleaded fuel Gasohol There are two types of gasohol gasohol con taining ethanol and that containing methanol Gasohol containing ethanol can be used if ethanol content does not exceed 1...

Page 17: ...an incorrect choice could adversely af fect performance and could also seriously damage the motor Engine speed depends on the propeller size and boat load If engine speed is too high or too low for go...

Page 18: ...he throttle setting to maintain the en gine in the proper operating range For instructions on propeller removal and in stallation see page 59 EMU25770 Start in gear protection Yamaha outboard motors o...

Page 19: ...p cowling lock lever 3 Anti cavitation plate 4 Propeller 5 Cooling water inlet 6 Drain screw 7 Trim rod 8 Clamp bracket 9 Manual starter handle 10 Warning indicator 11 Engine stop button Engine stop l...

Page 20: ...licensing or approval authority regula tions 1 Top cowling 2 Top cowling lock lever 3 Anti cavitation plate 4 Propeller 5 Cooling water inlet 6 Drain screw 7 Trim rod 8 Clamp bracket 9 Power tilt swi...

Page 21: ...er and the throttle The electrical switches are mounted on the remote control box EMU26190 Remote control lever Moving the lever forward from the neutral po sition engages forward gear Pulling the lev...

Page 22: ...is in the closed position EMU26221 Choke switch To activate the choke system press in the main switch while the key is turned to the on or start position The choke sys tem will then supply the rich fu...

Page 23: ...d fuel economy for the desired operation EMU25970 Throttle friction adjuster A friction device provides adjustable resis tance to movement of the throttle grip or the remote control lever and can be s...

Page 24: ...M00120 Attach the engine stop switch lanyard to a secure place on your clothing or your arm or leg while operating Do not attach the lanyard to clothing that could tear loose Do not route the lanyard...

Page 25: ...U26090 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 remove...

Page 26: ...ering mechanism and can be set according to operator preference An ad juster lever is located on the bottom of the tiller handle bracket To increase resistance turn the lever to the left To decrease r...

Page 27: ...bar The tilt support bar keeps the outboard motor in the tilted up position EMU26360 Power tilt unit This unit tilts the outboard motor up and down and is controlled with the power tilt switch CAUTION...

Page 28: ...g indicator see page 23 EMU26501 Low oil pressure warning indicator If oil pressure drops too low this indicator will flash For further information see page 23 CAUTION ECM00020 Do not continue to run...

Page 29: ...d will automatically de crease to about 2000 r min The low oil pressure warning indicator will light The buzzer will sound if equipped on the tiller handle remote control box or main switch panel If t...

Page 30: ...not possible to provide complete in structions for every possible boat and motor combination Proper mounting depends in part on experience and the specific boat and motor combination WARNING EWM00830...

Page 31: ...see page 36 EMU26970 Clamping the outboard motor 1 Place the outboard motor on the transom so that it is positioned as close to the cen ter as possible Tighten the transom clamp screws evenly and secu...

Page 32: ...mately half throttle 2 For the second hour of operation Run the engine at 3000 r min or at ap proximately three quarter throttle 3 For the next eight hours of operation Avoid continuous operation at f...

Page 33: ...the specified level if it is above the upper mark NOTE Be sure to completely insert the dipstick into the dipstick guide EMU27433 Filling fuel WARNING EWM00060 Gasoline and its vapors are highly flam...

Page 34: ...engine EMU27461 Feeding fuel portable tank WARNING EWM00420 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 s...

Page 35: ...gine stop switch lanyard to a secure place on your clothing or your arm or leg Then install the lock plate on the other end of the lanyard into the en gine stop switch WARNING EWM00120 Attach the engi...

Page 36: ...s slowly return the manual starter handle to its original posi tion before releasing it 7 Slowly return the throttle grip to the fully closed position NOTE When the engine is cold it needs to be warme...

Page 37: ...that could tear loose Do not route the lanyard where it could become entan gled preventing it from functioning Avoid accidentally pulling the lanyard during normal operation Loss of engine power means...

Page 38: ...ease the main switch and allow it to re turn to on CAUTION ECM00191 Never turn the main switch to start while the engine is running Do not keep the starter motor turning for more than 5 seconds If the...

Page 39: ...r pilot hole is blocked Consult your Yamaha dealer if the problem cannot be located and cor rected EMU27740 Shifting WARNING EWM00180 Before shifting make sure there are no swimmers or obstacles in th...

Page 40: ...Tiller control models 1 Place the throttle grip in the fully closed position 2 On models equipped with a tilt lock lever check that it is in the lock down position 3 Move the gear shift lever quickly...

Page 41: ...ngine comes to a complete stop 2 After stopping the engine tighten the air vent screw on the fuel tank cap and set the fuel cock lever or knob to the closed position if equipped 3 Disconnect the fuel...

Page 42: ...ing strain on the engine Correct trim an gle depends upon the combination of boat engine and propeller Correct trim is also af fected by variables such as the load in the boat sea conditions and runni...

Page 43: ...Improper trim an gle can cause loss of control NOTE The outboard motor trim angle can be changed approximately 4 degrees by shifting the trim rod one hole EMU27901 Adjusting trim angle power tilt mode...

Page 44: ...ow Up Too much trim out puts the bow of the boat too high in the water Performance and econ omy are decreased because the hull of the boat is pushing the water and there is more air drag Excessive tri...

Page 45: ...ing the outboard motor stop the engine by following the procedure on page 35 Never tilt the outboard mo tor while the engine is running Severe damage from overheating can result Do not tilt up the eng...

Page 46: ...0 After tilting the outboard motor be sure to support it with the tilt support knob or tilt support lever Otherwise the outboard mo tor could fall back down suddenly if oil in the power trim and tilt...

Page 47: ...d the tilt sup port lever tilt support knob becomes free 2 Release the tilt support lever or pull out the tilt support knob 3 Push the power tilt power trim and tilt switch down to lower the outboard...

Page 48: ...t out of the water increasing the chance of acci dent and personal injury Return the outboard motor to its normal position as soon as the boat is back in deeper water CAUTION ECM00260 Do not tilt the...

Page 49: ...n shallow water WARNING EWM00660 Place the gear shift in neutral before set ting up for shallow water cruising Return the outboard motor to its normal position as soon as the boat is back in deeper wa...

Page 50: ...ising in salt water After operating in salt water wash out the cooling water passages with fresh water to prevent them from becoming clogged with salt deposits NOTE For cooling system flushing instruc...

Page 51: ...mm 24 6 in T8PHD 625 mm 24 6 in T8EHD 625 mm 24 6 in Weight AL S F6MHD 38 0 kg 84 lb F8MHD 38 0 kg 84 lb Weight AL L F6MHD 39 5 kg 87 lb F8MHD 39 5 kg 87 lb T8EHD 46 5 kg 103 lb T8PRD 49 0 kg 108 lb...

Page 52: ...ar gasoline Min pump octane 86 Recommended engine oil 4 stroke outboard motor oil Engine oil grade API API SE SF SG SH SJ Engine oil type SAE SAE10W30 or SAE10W40 Lubrication Wet sump Engine oil quant...

Page 53: ...osition then trailer the outboard motor in the tilt posi tion using a motor support device such as a transom saver bar Consult your Yamaha dealer for further details EMU28235 Clamp screw mounting mode...

Page 54: ...fuel system is to be drained instead 3 Remove the engine top cowling and si lencer cover 4 Install the outboard motor on the test tank 5 Fill the tank with fresh water to above the level of the anti...

Page 55: ...erior of the outboard motor with fresh water and dry off com pletely 2 Spray the outboard motor exterior with Yamaha Silicone Protectant Part No LUB SILCNE 13 00 CAUTION ECM01330 If equipped Electroni...

Page 56: ...gravity of the electrolyte and recharge as re quired to prolong battery life EMU28440 Flushing power unit Perform this procedure right after operation for the most thorough flushing 1 After shutting o...

Page 57: ...ine when you perform maintenance unless otherwise specified If you or the owner is not famil iar with machine servicing this work should be done by your Yamaha dealer or other qualified mechanic Maint...

Page 58: ...internal Inspection replacement Battery Inspection charging Cooling water passages Cleaning Cowling clamp Inspection Fuel filter disposable Inspection replacement Fuel system Inspection Fuel tank Yam...

Page 59: ...d with clean water after each use EMU28871 Maintenance chart additional Valve clearance OHC OHV Inspection adjustment Item Actions Every 500 hours 2 5 years 1000 hours 5 years Timing belt Replacement...

Page 60: ...Maintenance 54 EMU28931 Greasing Yamaha marine grease Water resistant grease...

Page 61: ...and other deposits are excessive you should replace the spark plug with another of the correct type Before fitting the spark plug measure the electrode gap with a wire thickness gauge adjust the gap...

Page 62: ...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 2 hp models The propeller rotates when...

Page 63: ...outboard motor is upright not tilted when checking and changing the engine oil If the oil level is above the upper level mark drain until the level meets the specified capacity Overfilling the oil cou...

Page 64: ...check the oil level using the dipstick to be sure the level falls between the upper and lower marks Fill with oil if it is below the lower mark or drain to the specified level if it is above the upper...

Page 65: ...heck that all switches work 3 Tilt the outboard motor up and check that the trim and tilt rod is pushed out com pletely 4 Check that the trim and tilt rod is free of corrosion or other flaws 5 Tilt th...

Page 66: ...ned to break if the propeller hits a hard underwater obstacle to help protect the propeller and drive mechanism The propeller will then spin freely on the shaft If this happens the shear pin must be r...

Page 67: ...propeller nut does not align with the pro peller shaft hole after tightening to the speci fied torque tighten the nut further to align it with the hole EMU29280 Changing gear oil WARNING EWM00800 Be...

Page 68: ...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...

Page 69: ...Remove scales from the surfaces of the anodes Consult a Yamaha dealer for replacement of external anodes CAUTION ECM00720 Do not paint anodes as this would render them ineffective NOTE Inspect ground...

Page 70: ...als harmful to a battery and should not be used for topping up 1 Check the electrolyte level at least once a month Fill to the manufacturer s recom mended level when necessary Top up only with distill...

Page 71: ...ect the BLACK cable from the NEGA TIVE terminal first Then disconnect the RED cable from the POSITIVE terminal EMU29390 Checking top cowling Check the fitting of the top cowling by pushing it with bot...

Page 72: ...d by a Yamaha 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 ta...

Page 73: ...amaha dealer 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 car...

Page 74: ...ct spark plug 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...

Page 75: ...damage WARNING EWM00870 The outboard motor can be seriously dam aged by a collision while operating or trailering Damage could make the out board motor unsafe to operate If the outboard motor hits an...

Page 76: ...lt in an accident Attach the engine stop switch lanyard to a secure place on your clothing or your arm or leg while operating Do not attach the lanyard to clothing that could tear loose Do not route t...

Page 77: ...hed to the engine stop switch The main switch must be on if equipped 5 If equipped the choke knob pull out it when the engine is cold After the engine starts gradually return the choke knob to its hom...

Page 78: ...re slightly higher than normal Use care when starting off or stopping CAUTION ECM00380 Follow this procedure only in an emergen cy and just long enough to return to port for repairs EMU29760 Treatment...

Page 79: ...gging oil or engine oil through the carburetor s and spark plug holes while cranking the engine with the manual starter or emergency starter rope 6 Take the outboard motor to a Yamaha dealer as soon a...

Page 80: ...Consumer information 74 EMU29811 Important warranty information for U S A and Canada...

Page 81: ...Consumer information 75...

Page 82: ...Consumer information 76 EMU29830 YAMAHA MOTOR CORPORATION U S A FOUR STROKE OUTBOARD MOTOR THREE YEAR LIMITED WARRANTY...

Page 83: ...Consumer information 77...

Page 84: ...Consumer information 78 EMU29840 IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR YAMAHA OUTSIDE U S A OR CANADA...

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