The all-new Yamaha 90 hp and 75 hp Midrange four strokes are engineering achievements. Lighter, faster and more powerful than their previous designs, they sport SOHC four-valve-per-cylinder designs that increase volumetric efficiency. They also save weight—13 pounds to be exact. At the same time, they’ve both stepped up to 1.8-liter displacement.

• Yamaha F75 Owners Manual
• Yamaha F75 Owners Manual
• Yamaha F75 Owners Manual

Lighter weights, plus more power, creates a thrilling new F75, and makes the F90 a top performer in torque and acceleration. The F90 also features a 25-inch shaft option, which makes it prime power for a range of mid-size boaters and of particular interest to inshore anglers trolling for walleye or muskie on 25-inch-transom multi-species boats. The completely re-engineered Yamaha F75 and F90 Midrange four strokes. Powerful new additions to our lineup—and your boating experience.

F90 & F75 90 hp The all-new 1.8-liter I-4 F90 features greater displacement and a single-overhead-camshaft design with four valves per cylinder. This boosts power and volumetric efficiency and streamlines design. In fact, it’s 13 pounds lighter than previous designs.

A lighter, more powerful design gives the F90 blistering speed that’s 1.5 mph faster than competing outboards. Available for mechanical remote or tiller control. Only 353 pounds. Available in 20” or 25” shafts. Powerful 35-amp alternator.

Optional Variable Trolling RPM via the Command Link ® tachometer.Testing conducted by Yamaha at Yamaha’s US Test Facility on a G3 Model 1860 CC under the same conditions and with each rigged for maximum performance. Engine Type Inline 4 Displacement 1.8L Bore x Stroke 81 x 88.9mm (3.19 x 3.5 in) Prop Shaft Horsepower 90hp @ 5500 rpm Full Throttle RPM Range 5000 6000 Alternator Output at W.O.T. 35 Amp Compression Ratio 10.0:1 Fuel Induction System EFI Weight. 160kg (353 lbs) - 164kg (362 lbs) Recommended Fuel Octane 87 Recommended Engine Oil Yamalube® 4M (See owner's manual) Recommended Fuel Filtration Yamaha 10-Micron Fuel/Water Separating Filter (external) C.A.R.B. Rating Exhaust Intake Ignition Spark Plug Alternator Output Starting System Lubrication Engine Oil Capacity Recommended Cooling Ethanol Blend Limit Gear Ratio Gear Shift Shaft Length Degree of Tilt Degree of Trim Dry Weight Mounting Centers Steering Steering Angle (maximum) Warranty.

Engine Type Inline 4 Displacement 1.8L Bore x Stroke 81 x 88.9mm (3.19 x 3.5in) Prop Shaft Horsepower 75hp at 5500 rpm Full Throttle RPM Range 5000 6000 rpm Alternator Output at W.O.T. 35 Amp Compression Ratio 10.0:1 Fuel Induction System EFI Weight. 160 kg (353 lbs) Recommended Fuel Octane 87 Recommended Engine Oil Yamalube® 4M (See owner's manual) Recommended Fuel Filtration Yamaha 10-Micron Fuel/Water Separating Filter (external) C.A.R.B. Rating Exhaust Intake Ignition Spark Plug Alternator Output Starting System Lubrication Engine Oil Capacity Recommended Cooling Ethanol Blend Limit Gear Ratio Gear Shift Shaft Length Degree of Tilt Degree of Trim Dry Weight Mounting Centers Steering Steering Angle (maximum) Warranty.

. OWNER’S MANUAL U.S.A.Edition LIT-18626-06-79 6D6-28199-12. ZMU01690 Read this owner’s manual carefully before operating your outboard motor. EMU31280 your machine and this manual. If there is any To the owner question concerning this manual, please con- Thank you for choosing a Yamaha outboard sult your Yamaha dealer. This Owner’s Manual contains infor- NOTE: mation needed for proper operation, mainte- The F75TR, F90TR and the standard acces- nance and care.

Important manual information. Table of contents Variable trolling RPM switches.17 General information. 1 Trim tab with anode. 18 Identification numbers record.1 Tilt support lever for power trim Outboard motor serial number.1 and tilt or hydro tilt model.18 Key number. Table of contents Shifting.32 Inspecting fuel filter.

50 Cleaning fuel filter.51 Forward (tiller handle and Changing engine oil. 51 remote control models). 32 Checking wiring and Reverse connectors. 53 (automatic reverse lock and Exhaust leakage.53 power trim and tilt models). Table of contents Consumer information.67 Important warranty information for U.S.A. 67 YAMAHA MOTOR CORPORATION, U.S.A. FOUR-STROKE OUTBOARD MOTOR THREE-YEAR LIMITED WARRANTY.

69 IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR YAMAHA OUTSIDE THE USA OR CANADA.71. Record your outboard motor serial number in the spaces provided to assist you in ordering spare parts from your Yamaha dealer or for reference in case your outboard motor is sto- len. General information ZMU05159 1. Star labels location EMU25262 Manufactured date label EMU25280 One Star—Low Emission This label is attached to the clamp bracket or The one-star label identifies engines that the swivel bracket. Meet the Air Resources Board’s 2001 ex- haust emission standards. General information the rated horsepower capacity of the boat. If the rated horsepower capacity of the boat is unknown, consult the dealer or boat man- ufacturer.

Do not modify the outboard. Modifications could make the motor unfit or unsafe to use. Incorrect propeller selection and incorrect use may not only cause engine damage, but also adversely affect fuel consumption.

Never illegally discard (dump) the product. Keep hands, hair, and clothes away from Yamaha recommends consulting the deal- flywheel and other rotating parts while er on discarding the product. Engine is running. General information EMU25500 Give-way vessel Basic boating rules (Rules of The vessel which does not have the right-of- the road) way has the duty to take positive and timely Just as there are rules which apply when you action to stay out of the way of the Stand-On are driving on streets and high ways, there vessel. General information area must yield to you (they are the Give-Way should maintain course and direction, provid- vessels). Both you and the meeting vessel ed the other vessel gives you the right-of-way must alter course to avoid each other.

As it should. Meeting Overtaking If you are meeting another power vessel head. General information Fishing vessel right-of-way System has been devised for these waters. All vessels which are fishing with nets, lines or This system uses buoys and signs with dis- trawls are considered to be “fishing vessels” tinctive shapes and colors to show regulatory under the International Rules. General information ZMU01708 EMU25540 Do not smoke when refueling, and keep Fueling instructions away from sparks, flames, or other EWM00010 sources of ignition.

WARNING Stop engine before refueling. GASOLINE AND ITS VAPORS ARE HIGH- Refuel in a well-ventilated area.

Refuel LY FLAMMABLE AND EXPLOSIVE! Portable fuel tanks off the boat. All 4-stroke engines are shipped from the ethanol content does not exceed 10% and the factory without engine oil. Fuel meets minimum octane ratings. Yamaha does not recommended gasohol containing methanol because it can cause fuel system damage or engine performance problems. Yamaha outboard motors are fitted with pro- pellers chosen to perform well over a range of applications, but there may be uses where a propeller with a different pitch would be more appropriate. For instructions on propeller removal and in- stallation, see page 54.

EMU25770 Start-in-gear protection Yamaha outboard motors or Yamaha-ap- proved remote control units are equipped with start-in-gear protection device(s). This feature permits the engine to be started only when it is in neutral. Basic components EMU25796 Main components NOTE:.

May not be exactly as shown; also may not be included as standard equipment on all models. Top cowling Remote control 2. Top cowling lock lever(s) The remote control lever actuates both the 3. Basic components 2.

Remote control lever 3. Neutral interlock trigger 4. Neutral throttle lever 5. Main switch / choke switch 6. Engine stop lanyard switch 7.

Throttle friction adjuster EMU26190 Remote control lever Moving the lever forward from the neutral po- sition engages forward gear. Basic components EMU25922 EMU25961 Gear shift lever Throttle indicator Pulling the gear shift lever towards you puts The fuel consumption curve on the throttle in- the engine in forward gear so that the boat dicator shows the relative amount of fuel con- moves ahead. Basic components EWM00030 EWM00120 WARNING WARNING Do not overtighten the friction adjuster.

If Attach the engine stop switch lanyard to there is too much resistance, it could be a secure place on your clothing, or your difficult to move throttle lever or grip, arm or leg while operating. Basic components With the main switch in the “ ” (start) po- sition, the starter motor turns to start the en- gine.

When the key is released, it returns automatically to the “ ” (on) position. Lock plate EMU26001 Engine stop button To open the ignition circuit and stop the en. Basic components ZMU04231 1.

Power trim and tilt switch NOTE: For instructions on using the power trim and tilt switch, see page 36. EMU30900 Variable trolling RPM switches The trolling speed can be adjusted when the outboard motor is trolling. Press the “ ”. Basic components ZMU02525 1. Variable trolling RPM switch 1.

Bolt EMU26241 Trim tab with anode 3. Cap The trim tab should be adjusted so that the steering control can be turned to either the right or left by applying the same amount of force.

Basic components EMU26382 Top cowling lock lever (pull up type) To remove the engine top cowling, pull up the lock lever(s) and lift off the cowling. When in- stalling the cowling, check to be sure it fits properly in the rubber seal. Then lock the cowling by moving the lever(s) downward. Basic components EMU26521 Low oil pressure warning indicator If oil pressure drops too low, the warning indi- cator will start to blink. For further information, see page 24.

ECM00020 CAUTION: Do not continue to run the engine if the low oil pressure warning indicator is on and the engine oil level is lower. Basic components NOTE: The speedometer displays km/h, mph, or knots, according to operator preference. Se- lect the desired unit of measurement by set- ting the selector switch on the back of the gauge. See the illustration for settings. ZMU01740 EMU26650 Hour meter (digital type) This meter shows the number of hours the en- gine has been run.

The trip distance is shown in kilometers or CAUTION: miles depending upon the unit of measure- The Yamaha fuel tank sensor differs from ment selected for the speedometer. Conventional sensors. Incorrectly setting The trip distance is kept in memory by bat- the selector switch on the gauge will give tery power. Do not continue to operate the engine with warning device has activated.

Consult full throttle if a warning device has activat- your Yamaha dealer if the problem cannot ed. Get back to the port within trolling en- be located and corrected. Check the oil level and add oil as needed.

If the oil level is correct and the warning device does ZMU02630 not switch off, consult your Yamaha dealer. ECM00100 EMU26854 Low oil pressure warning.

Operation EMU26901 EWM00830 Installation WARNING ECM00110 Improper mounting of the outboard motor CAUTION: could result in hazardous conditions such Incorrect engine height or obstructions to as poor handling, loss of control, or fire smooth water flow (such as the design or hazards. If any item in the preoperation check is not optimum mounting height. Consult your working properly, have it inspected and Yamaha dealer or boat manufacturer for repaired before operating the outboard further information on determining the prop- motor.

Otherwise an accident could occur. Operation Check fuel line connections to be sure they are tight (if equipped Yamaha fuel tank or boat tank). Be sure the fuel tank is positioned on a se- cure, flat surface, and that the fuel line is not twisted or flattened, or likely to contact sharp objects (if equipped Yamaha fuel tank or boat tank). Squeeze the primer pump with the outlet end up until you feel it become firm. While many additives available may reduce deposits, Yamaha recommends the use of Ring Free Fuel Additive, available from your Yamaha dealer.

Ring Free Fuel Additive. Operation Place the throttle grip in the “ ” NOTE: (start) position. After the engine starts, re- The start-in-gear protection device prevents turn the throttle to the fully closed posi- the engine from starting except when in neu- tion. Attach the engine stop switch lanyard to a secure place on your clothing, or your arm or leg. Operation ECM00191 Attach the engine stop switch lanyard to CAUTION: a secure place on your clothing, or your Never turn the main switch to “ ” arm or leg. Then install the lock plate on (start) while the engine is running.

The other end of the lanyard into the en- Do not keep the starter motor turning for gine stop switch. START gine damage could occur. Check the oil level and add oil if necessary. Consult your Yamaha dealer if the cause for the low oil pressure warning indicator can- not be found. A continuous flow of water from the pilot. Operation Remote control models EMU27740 Shifting Pull up the neutral interlock trigger (if EWM00180 equipped) and move the remote control lever WARNING quickly and firmly from neutral to forward. Before shifting, make sure there are no swimmers or obstacles in the water near you.

Operation EMU30880 Trolling EMU30890 Adjusting trolling speed The trolling speed on outboard motors equipped with the variable trolling RPM switches can be adjusted approximately 50 r/min with each press of a switch. Move the gear shift lever quickly and firm- ly from neutral to reverse. Operation NOTE: The engine can also be stopped by pulling the lanyard and removing the lock plate from the engine stop switch, then turning the main switch to “ ” (off). EMU27861 Trimming outboard motor The trim angle of the outboard motor helps determine the position of the bow of the boat in the water. Operation 1.

Power trim and tilt switch ZMU04258 1. Trim operating angle EMU27881 1. Power trim and tilt switch Adjusting trim angle Power trim and tilt models EWM00750 WARNING Be sure all people are clear of the out- board motor when adjusting the tilt an- gle, also be careful not to pinch any body parts between the drive unit and clamp bracket. Operation NOTE: To adjust the trim angle while the boat is mov- ing, use the power trim and tilt switch located on the remote control device or tiller handle, if equipped. EMU27911 Adjusting boat trim When the boat is on plane, a bow-up attitude results in less drag, greater stability and effi- ciency. Operation EWM00220 WARNING Be sure all people are clear of the out- board motor when tilting up and down, also be careful not to pinch any body parts between the drive unit and engine bracket.

EWM00250 WARNING Leaking fuel is a fire hazard. If there is a fuel joint on the outboard motor, discon- Disconnect the fuel line from the out- nect the fuel line or close the fuel cock if. Operation ECM00250 CAUTION: Be sure to retract the trim rods completely during mooring.

This protects the rods from marine growth and corrosion which could damage the power trim and tilt mechanism. EMU28053 Procedure for tilting down ZMU04232 Power trim and tilt models / power tilt models Push the power tilt / power trim and tilt Push the tilt support knob into the clamp switch “.

Operation ting up for and cruising in shallow water. Otherwise severe damage from overheat- ing can result. EMU28184 Procedure for power trim and tilt / power tilt models Place the gear shift lever in neutral. ZMU04255 EMU28060 Cruising in shallow water The outboard motor can be tilted up partially to allow operation in shallow water.

For cooling system flushing instructions, see page 42. Cruising in turbid water Yamaha strongly recommends that you use the optional chromium-plated water pump kit (not available for some models) if you use the outboard motor in turbid (muddy) water condi. Maintenance EMU28217 Valve clearance (cold engine) IN: Specifications 0.17–0.23 mm (0.0067–0.0091 in) Dimension: Valve clearance (cold engine) EX: 0.31–0.37 mm (0.0122–0.0146 in) Overall length: Min. Cold cranking amps (CCA/SAE): 817 mm (32.2 in) 380.0 A Overall width: Min. Marine cranking amps (MCA/ABYC): 479 mm (18.9 in) 502.0 A Overall height L. Leaking fuel is a fire hazard. When trans- is advisable to have your outboard motor ser- porting and storing the outboard motor, viced by an authorized Yamaha dealer prior to close the air vent screw and fuel cock to storage.

However, you, the owner, with a min- prevent fuel from leaking. 00) to each gallon of fuel. Flushing attachment NOTE: Cooling system flushing is essential to The use of “Yamaha Fuel Conditioner and prevent the cooling system from clogging Stabilizer” eliminates the need to drain the up with salt, sand, or dirt.

In addition, fog- fuel system. LUB-SILCNE-13-00). KEEP BATTERIES AND ELECTROLYTIC Wax the cowling with a non-abrasive wax FLUID OUT OF REACH OF CHILDREN.

Such as “Yamaha Silicone Wax” (Part No. Batteries vary among manufacturers. There- fore the following procedures may not always apply. Consult your battery manufacturer’s in. Maintenance Procedure Disconnect and remove the battery from the boat. Always disconnect the black negative cable first to prevent the risk of shorting.

Clean the battery casing and terminals. Fill each cell to the upper level with dis- tilled water. Store the battery on a level surface in a cool, dry, well-ventilated place out of di- rect sunlight. Yamaha dealer or better results. Other qualified mechanic.

For cooling system flushing instructions, see page 42. When operating in salt water, turbid or muddy water, the engine should be flushed with clean water 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. Initial Every Item Actions.

Maintenance Initial Every Item Actions 10 hours 50 hours 100 hours 200 hours (1 month) (3 months) (6 months) (1 year) Throttle link / throttle cable / throttle pick-up Inspection / adjustment timing Inspection / replace- Water pump ment Engine oil Inspection / change Oil filter (cartridge) Change. Maintenance EMU28931 Greasing Yamaha marine grease (Water resistant grease) ZMU04266 EMU28952 the outboard motor to a Yamaha dealer. You Cleaning and adjusting spark plug should periodically remove and inspect the EWM00560 spark plug because heat and deposits will WARNING cause the spark plug to slowly break down When removing or installing a spark plug, and erode. Improper repairs can make the outboard unsafe to operate.

Check the fuel lines for leaks, crack, or mal- function. If a problem is found, your Yamaha dealer or other qualified mechanic should re- pair it immediately. Spark plug gap 2. If you have any question about properly sary. If any water is found in the fuel, the doing this procedure, consult your Yamaha portable fuel tank or other fuel Yamaha dealer. Tanks should be checked and cleaned.

Do not perform this procedure on a hot Reinstall the filter element in the cup. Maintenance If the oil level is above the upper level mark, drain until the level meets the specified capacity. Overfilling the oil could cause leakage or damage. ECM01240 CAUTION: Change the engine oil after the first 10 hours of operation, and every 100 hours or at 6-month intervals thereafter. Con- tinued operation with a problem could cause severe engine damage. Consult your Yamaha dealer if the problem cannot be located and corrected. Turn off the engine and wait 3 minutes.

Maintenance NOTE: NOTE: If any leaks are found, consult your Yamaha Consult your Yamaha dealer if any operation dealer. EMU29162 EMU29171 Checking power trim and tilt / power Checking propeller tilt system EWM00321 WARNING EWM00430 WARNING You could be seriously injured if the en. The propeller will then spin freely on the shaft. If this happens, the shear Apply Yamaha marine grease or a corro- pin must be replaced. Sion resistant grease to the propeller shaft. Be sure the outboard motor is securely fastened to the transom or a stable NOTE: stand.

You could be severely injured if For disposal of used oil consult your Yamaha the outboard motor falls on you. Never get under the lower unit while it is. Antidote (EXTERNAL): Inspect ground leads attached to external an- SKIN - Flush with water. Odes on equipped models. Consult a Yamaha EYES - Flush with water for 15 minutes dealer for inspection and replacement of inter- and get immediate medical attention. (for example: welding the battery when it is low. Equipment, lighted cigarettes, and so NOTE: on.) Consult a Yamaha dealer when charging or DO NOT SMOKE when charging or han- re-charging batteries.

Dling batteries. KEEP BATTERIES AND ELECTROLYTIC. EMU29390 Checking top cowling Check the fitting of the top cowling by pushing it with both hands.

If it is loose have it repaired by your Yamaha dealer. EMU29400 Coating the boat bottom A clean hull improves boat performance. The boat bottom should be kept as clean of marine growth as possible. Yamaha outboard motors. Has fuel pump malfunctioned? Some items may not apply to your model. Have serviced by a Yamaha dealer.

Yamaha F75 Owners Manual

If your outboard motor requires repair, bring it to your Yamaha dealer. Are spark plug(s) fouled or of incorrect.

Return to normal operating position. Fill tank with clean, fresh fuel. Is carburetor clogged? Is fuel filter clogged?

Have serviced by a Yamaha dealer. Clean or replace filter. Is fuel joint connection incorrect? Have ignition parts failed? Is fuel system obstructed?

Is water pump or thermostat faulty? Check for pinched or kinked fuel line or oth- A. Have serviced by a Yamaha dealer. Er obstructions in fuel system. Is there excess water in fuel filter cup? Is steering pivot loose or damaged?

Be sure to use the specified fuse. Tighten or have serviced by a Yamaha correct fuse or a piece of wire could allow dealer.

Excessive current flow. This could cause. Trouble Recovery ZMU04249 1. Manual valve screw Put the engine in the desired position, then tighten the manual valve screw by turning it clockwise. EMU29540 Starter will not operate If the starter mechanism does not operate (the engine cannot be cranked with the start- er), the engine can be started manually with an emergency starter rope. Trouble Recovery Avoid accidentally pulling the lanyard Prepare the engine for starting.

For fur- during normal operation. Loss of engine ther information, see page 28. Be sure power means the loss of most steering the engine is in neutral and that the en- control.

EMU29760 Treatment of submerged motor If the outboard motor is submerged, immedi- ately take it to a Yamaha dealer. Otherwise some corrosion may begin almost immediate- If you cannot immediately take the outboard motor to a Yamaha dealer, follow the proce- dure below in order to minimize engine dam- age.

Yamaha F75 Owners Manual

Consumer information EMU29811 Important warranty information for U.S.A. Consumer information.

Consumer information EMU29830 YAMAHA MOTOR CORPORATION, U.S.A. FOUR-STROKE OUTBOARD MOTOR THREE-YEAR LIMITED WARRANTY. Consumer information. Consumer information EMU29841 IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR YAMAHA OUTSIDE THE USA OR CANADA.

Yamaha F75 Owners Manual

YAMAHA MOTOR CORPORATION, USA Printed in Japan May 2005–1.8 × 1 CR Printed on recycled paper.