Yamaha F350AETX v2 Owner's Manual
en
F350 LF350
OWNERS MANUAL
6AW-28199-10
U.S.A.Edition LIT-18626-07-47
6AW-9-10 Hyoshi 07.3.23 0:10 PM 1
EMU25061
ZMU01690
Read this owners manual carefully before operating or working on your outboard motor. Keep this manual onboard in a waterproof bag when boating. This manual should stay with the outboard motor if it is sold.
6AW-9-10 Hyoshi 07.3.23 0:10 PM 2
Important manual information
EMU31281
To the owner
Thank you for choosing a Yamaha outboard motor. This Owners Manual contains infor- mation needed for proper operation, mainte- nance and care. A thorough understanding of these simple instructions will help you ob- tain maximum enjoyment from your new Yamaha. If you have any question about the operation or maintenance of your outboard motor, please consult a Yamaha dealer. In this Owners Manual particularly important information is distinguished in the following ways.
The Safety Alert Symbol means ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED!
WARNING
EWM00780
Failure to follow WARNING instructions could result in severe injury or death to the machine operator, a bystander, or a person inspecting or repairing the out-
board motor.
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 continually seeks advancements in product design and quality. Therefore, while this manual contains the most current prod- uct information available at the time of print- ing, there may be minor discrepancies between your machine and this manual. If there is any question concerning this manu-
al, please consult your Yamaha dealer.
NOTE:
The F350TR, LF350TR and the standard ac- cessories are used as a base for the expla- nations and illustrations in this manual. Therefore some items may not apply to ev-
ery model.
EMU25111
F350, LF350 OWNERS MANUAL
2007 by Yamaha Motor Corporation, USA 1st edition, May 2007 All rights reserved.
Any reprinting or unauthorized use without the written permission of Yamaha Motor Corporation, USA
is expressly prohibited. Printed in Japan
P/N LIT-18626-07-47
Table of contents
General information .......................... 1
Identification numbers record.......... 1
Outboard motor serial number .......... 1 Digital electronic control serial
number............................................ 1 Key number....................................... 2
Emission control information ........... 2
North American models..................... 2 Star labels ......................................... 3
Read manuals and labels................ 5
Warning labels .................................. 5
Safety information............................. 9
Safety information ........................... 9
Rotating parts.................................... 9 Hot parts ........................................... 9 Electric shock.................................... 9 Power trim and tilt ............................. 9 Engine shut-off cord.......................... 9 Gasoline............................................ 9 Gasoline exposure and spills ............ 9 Carbon monoxide............................ 10 Modifications ................................... 10
Boating safety ............................... 10
Alcohol and drugs ........................... 10 Personal flotation devices ............... 10 People in the water ......................... 10 Passengers ..................................... 10 Overloading..................................... 10 Avoid collisions ............................... 10 Weather .......................................... 11 Accident reporting ........................... 11 Boat education and training ............ 11 Passenger training .......................... 11 Boating safety publications ............. 11 Laws and regulations ...................... 11
Boating organizations.................... 12 Basic boating rules
(Rules of the road) ...................... 12
Steering and sailing rules and sound signals................................ 12
Rules when encountering vessels .. 13 Other special situations................... 14
Basic requirements......................... 17
Fueling instructions ....................... 17
Gasoline.......................................... 17
Engine oil ........................................17
Installation requirements............... 18
Boat horsepower rating ...................18 Mounting motor ...............................18 Digital electronic control
requirements .................................18 Battery requirement.........................19 Propeller selection...........................19
Start-in-gear protection ................. 20
Basic components .......................... 21
Main components ......................... 21
Digital electronic control ..................23 Digital electronic control-active
indicator ........................................24 Digital electronic control-warning
indicator ........................................24 Control lever ....................................25 Free throttle switch..........................25 Throttle friction adjuster...................26 Engine shut-off switch .....................27 Main switch .....................................27 Power trim and tilt switch on digital
electronic control...........................28 Power trim and tilt switch on
bottom engine cowling ..................28 Power trim and tilt switches
(twin type) .....................................29 Tilt limiter .........................................29 Tilt support lever for power trim
and tilt model.................................29 Top cowling lock lever (turn type) ...30 Flushing device ...............................30 Fuel filter/Water separator...............31 Command link multifunction
meters ...........................................31 Tachometer unit ..............................31 Speed & fuel meter unit...................35 Speedometer unit ............................36 Fuel management meter .................37
Warning system ............................ 38
Digital electronic control warning ....38 Overheat warning (twin engines) ....38 Low oil pressure warning ................39
Operation ......................................... 41
Installation..................................... 41
Table of contents
Mounting the outboard motor .......... 41
Breaking in engine ........................ 42
Procedure for 4-stroke models........ 42
Pre-operation checks .................... 43
Fuel ................................................. 43 Controls........................................... 43 Stop switches.................................. 43 Engine............................................. 43 Checking the engine oil level .......... 43
Filling fuel ...................................... 44
Ring Free Fuel Additive .................. 44
Operating engine........................... 44
Priming fuel system......................... 44 Starting engine................................ 45
Warming up engine ....................... 46 Shifting .......................................... 47 Stopping boat ................................ 48 Stopping engine ............................ 48
Procedure ....................................... 48
Trimming outboard motor.............. 48
Adjusting trim angle (Power trim and tilt)....................... 49
Adjusting boat trim .......................... 50
Tilting up and down ....................... 50
Procedure for tilting up (power trim and tilt models) .......... 51
Procedure for tilting down (power trim and tilt models) .......... 52
Cruising in shallow water .............. 53
Power trim and tilt models............... 53
Cruising in other conditions........... 54
Maintenance..................................... 55
Specifications ................................ 55 Transporting and storing
outboard motor............................ 56
Storing outboard motor ................... 56 Procedure ....................................... 57 Lubrication ...................................... 57 Cleaning and anticorrosion
measures ...................................... 57 Flushing power unit ......................... 57 Cleaning the outboard motor .......... 58 Checking painted surface of
motor............................................. 58
Periodic maintenance.................... 59
Replacement parts ..........................59 Maintenance interval guidelines......59 Maintenance chart 1........................60 Maintenance chart 2........................62 Greasing..........................................63 Cleaning and adjusting spark
plug ...............................................64 Checking fuel system ......................67 Inspecting idling speed....................68 Changing engine oil ........................68 Checking wiring and connectors .....68 Exhaust leakage..............................69 Water leakage .................................69 Engine oil leakage...........................69 Checking power trim and tilt
system...........................................69 Checking propeller ..........................70 Removing propeller .........................71 Installing propeller ...........................71 Changing gear oil ............................72 Inspecting and replacing
anode(s)........................................73 Checking battery
(for electric start models) ..............74 Connecting the battery ....................75 Disconnecting the battery................77 Checking top cowling ......................77 Coating the boat bottom..................77
Trouble Recovery............................ 78
Troubleshooting ............................ 78 Temporary action in
emergency .................................. 81
Impact damage ...............................81 Running single engine
(twin engines)................................81 Replacing fuse ................................82 Power trim and tilt will not
operate..........................................83 Water separator-warning indicator
blinks while cruising ......................83
Treatment of submerged motor........................................... 85
Consumer information ................... 86
Important warranty information for U.S.A. and Canada ..................... 86
Table of contents
YAMAHA MOTOR CORPORATION, U.S.A. FOUR-STROKE OUTBOARD MOTOR THREE-YEAR LIMITED WARRANTY ................................ 88
IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR YAMAHA OUTSIDE THE USA OR CANADA .............. 90
1
General information
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Identification numbers record
EMU25183
Outboard motor serial number
The outboard motor serial number is stamped on the label attached to the port side of the clamp bracket. 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.
EMU34940
Digital electronic control serial number
The digital electronic control serial number is stamped on the label attached to the digital electronic control box. Record your digital electronic control serial
number in the spaces provided to assist you in newly connecting the digital electronic control to the outboard motor.
NOTE:
Consult your Yamaha dealer if you have any questions concerning the digital electronic
control serial number.
1. Outboard motor serial number location
1 ZMU05814
1. Digital electronic control serial number loca- tion
1. Digital electronic control serial number loca- tion
ZMU05885
1
ZMU05887
1
General information
2
EMU25190
Key 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 case you need a new key.
EMU25221
Emission control information
EMU25230
North American models
This engine conforms to U.S. Environmental Protection Agency (EPA) regulations for ma- rine SI engines. See the label affixed to your engine for details.
EMU31560
Approval label of emission control certif- icate
This label is attached to the bottom cowling. New Technology; (4-stroke) MFI
EMU25262
Manufactured date label
This label is attached to the clamp bracket or the swivel bracket.
1. Key number
1. Approval label location
1 ZMU05911
General information
3
EMU25273
Star labels
Your outboard motor is labeled with a Cali- fornia Air Resources Board (CARB) star la- bel. See below for a description of your particular label.
EMU25280
One StarLow Emission
The one-star label identifies engines that meet the Air Resources Boards 2001 ex- haust emission standards. Engines meeting these standards have 75% lower emissions than conventional carbureted two-stroke en- gines. These engines are equivalent to the U.S. EPAs 2006 standards for marine en- gines.
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Two StarsVery Low Emission
The two-star label identifies engines that meet the Air Resources Boards 2004 ex- haust emission standards. Engines meeting these standards have 20% lower emissions than One Star-Low-Emission engines.
EMU25300
Three StarsUltra Low Emission
The three-star label identifies engines that meet the Air Resources Boards 2008 ex- haust emission standards. Engines meeting
1. Manufactured date label location
1. Star labels location
1 ZMU05816
1
ZMU05817
ZMU01702
ZMU01703
General information
4
these standards have 65% lower emissions than One Star-Low-Emission engines.
EMU33861
Four StarsSuper Ultra Low Emission
The four-star label identifies engines that meet the Air Resources Boards Sterndrive and Inboard marine engine 2009 exhaust emission standards. Personal Watercraft and Outboard marine engines may also comply with these standards. Engines meet- ing these standards have 90% lower emis- sions than One Star-Low-Emission engines.
ZMU01704
ZMU05663
General information
5
EMU33520
Read manuals and labels
Before operating or working on this motor:
Read this manual.
Read 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.
EMU33831
Warning labels
If these labels are damaged or missing, contact your Yamaha dealer for replacements.
F350
4
2
1
ZMU05942
General information
6
LF350
4
2
1 3
ZMU05815
General information
7
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Other labels
1 2
3
ZMU05707
6K1-83823-41
4
ZMU05711
General information
8
EMU35130
Symbols
The following symbols mean as follows.
Caution/Warning
Read Operators Manual
Hazard caused by continuous rotation
Electrical hazard
ZMU05696
ZMU05664
ZMU05665
ZMU05666
9
Safety information
EMU33621
Safety information
Observe these precautions at all times.
EMU33630
Rotating parts
Hands, feet, hair, jewelry, clothing, PFD straps, etc. can become entangled with inter- nal rotating parts of the engine, resulting in serious injury or death. Keep the top cowling in place whenever pos- sible. Do not remove or replace the cowling with the engine running. Only operate the engine with the cowling re- moved according to the specific instructions in the manual. Keep hands, feet, hair, jewel- ry, clothing, PFD straps, etc. away from any exposed moving parts.
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Hot parts
During and after operation, engine parts are hot enough to cause burns. Avoid touching any parts under the top cowling until the en- gine has cooled.
EMU33650
Electric shock
Do not touch any electrical parts while start- ing or operating the engine. They can cause shock or electrocution.
EMU33660
Power trim and tilt
Body parts can be crushed between the mo- tor and the clamp bracket 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 is locked.
Severe injury could occur if the outboard mo- tor accidentally falls.
EMU33670
Engine shut-off cord
Attach the engine shut-off cord so that the engine stops if the operator falls overboard or leaves the helm. This prevents the boat from running away under power and leaving people stranded, or running over people or objects. Always attach the engine shut-off cord to a secure place on your clothing or your arm or leg while operating. Do not remove it to leave the helm while the boat is moving. Do not at- tach the cord to clothing that could tear loose, or route the cord where it could be- come entangled, preventing it from function- ing. Do not route the cord where it is likely to be accidentally pulled out. If the cord is pulled during operation, the engine will shut off and you will lose most steering control. The boat could slow rapidly, throwing people and ob- jects forward.
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Gasoline
Gasoline and its vapors are highly flam- mable and explosive.
Always, refuel ac- cording to the procedure on page 44 to reduce the risk of fire and explosion.
EMU33820
Gasoline exposure and spills
Take care not to spill gasoline. If gasoline spills, wipe it up immediately with dry rags. Dispose of rags properly. If any gasoline spills onto your skin, immedi- ately wash with soap and water. Change clothing if gasoline spills on it. If you swallow gasoline, inhale a lot of gaso- line vapor, or get gasoline in your eyes, get immediate medical attention. Never siphon fuel by mouth.
Safety information
10
EMU33900
Carbon monoxide
This product emits exhaust gases which contain carbon monoxide, a colorless, odor- less gas which may cause brain damage or death when inhaled. Symptoms include nau- sea, dizziness, and drowsiness. Keep cock- pit and cabin areas well ventilated. Avoid blocking exhaust outlets.
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Modifications
Do not attempt to modify this outboard mo- tor. Modifications to your outboard motor may reduce safety and reliability, and render the outboard unsafe or illegal to use.
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Boating safety
This section includes a few of the many im- portant safety precautions that you should follow when boating.
EMU33710
Alcohol and drugs
Never operate after drinking alcohol or tak- ing drugs. Intoxication is one of the most common factors contributing to boating fatal- ities.
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Personal flotation devices
Have an approved personal flotation device (PFD) on board for every occupant. Yamaha recommends that you must wear a PFD whenever boating. At a minimum, children and non-swimmers should always wear PFDs, and everyone should wear PFDs when there are potentially hazardous boat- ing conditions.
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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 shut off the motor. Stay away from swimming areas. Swimmers can be hard to see. The propeller can keep moving even when the motor is in neutral. Shut off the engine when a person is in the water near you.
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Passengers
Consult your boat manufacturers instruc- tions for details about appropriate passenger locations in your boat and be sure all pas- sengers are positioned properly before ac- celerating and when operating above an idle speed. Standing or sitting in non-designated locations may result in being thrown either overboard or within the boat due to waves, wakes, or sudden changes in speed or direc- tion. Even when people are positioned prop- erly, alert your passengers if you must make any unusual maneuver. Always avoid jump- ing waves or wakes.
EMU33760
Overloading
Do not overload the boat. Consult the boat capacity plate or boat manufacturer for max- imum weight and number of passengers. Be sure that weight is properly distributed ac- cording to the boat manufacturers instruc- tions. Overloading or incorrect weight distribution can compromise the boats han- dling and lead to an accident, capsizing or swamping.
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Avoid collisions
Scan constantly
for people, objects, and other boats. Be alert for conditions that limit your visibility or block your vision of others.
Operate defensively
at safe speeds and keep a safe distance away from people, ob- jects, and other boats.
Do not follow directly behind other boats or waterskiers.
Safety information
11
Avoid sharp turns or other maneuvers that make it hard for others to avoid you or un- derstand where you are going.
Avoid areas with submerged objects or shallow water.
Ride within your limits and avoid aggres- sive maneuvers to reduce the risk of loss of control, ejection, and collision.
Take early action
to avoid collisions. Re- member,
boats do not have brakes
, and 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.
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Weather
Stay informed about the weather. Check weather forecasts before boating. Avoid boating in hazardous weather.
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Accident reporting
Boat operators are required by law to file a Boating Accident Report with their state boating law enforcement agency if their boat is involved in any of the following accidents: 1. There is loss of life or probable loss of
life. 2. There is personal injury that requires
medical attention beyond first aid. 3. There is property damage to boats or
other property over a certain amount. 4. There is complete loss of a boat. Contact local law enforcement personnel if a report is necessary.
EMU33870
Boat education and training
Operators should take a boating safety course. This may be required in your state. Many of the organizations listed in the next section can provide information about cours- es in your area.
You may also want to consider an Internet- based program for basic boater education. The Online Boating Safety Course provided by the BoatU.S. Foundation, is approved by the National Association of State Boating Law Administrators (NASBLA) and recog- nized by the United States Coast Guard. Most, but not all, states accept this course to meet their minimum requirements. While it cannot replace an in-depth course such as one offered by the U.S. Coast Guard, U.S. Power Squadron, or other organization, this online course does provide a general over- view of the basics in boating safety, require- ments, navigation, and operation. Upon successful completion of the course, the user can download a certificate of comple- tion immediately or, for a small charge, re- quest one by mail. To take this free course, go to boatus.org.
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Passenger training
Make sure at least one other passenger is trained to operate the boat in the event of an emergency.
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Boating safety publications
Be informed about boating safety. Additional publications and information can be obtained from many boating organizations.
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Laws and regulations
Know the marine laws and regulations where you will be boating- and obey them. Several sets of rules prevail according to geographic location, but all are basically the same as the International Rules of the Road. The rules presented in the following section are con- densed- and have been provided for your convenience only. Contact the U.S. Coast Guard, the National Association of State Boating Law Adminis-
Safety information
12
trators, or your local Power Squadron for a complete set of rules governing the waters in which you will be using your boat.
EMU33680
Boating organizations
The following organizations provide boating safety training and information about boating safety and laws.
United States Coast Guard
Consumer Affairs Staff (G-BC) Office of Boating, Public, and Consumer Af- fairs U.S. Coast Guard Headquarters Washington, D.C. 20593-0001 Boating Safety Hotline: 1-800-368-5647 www.uscgboating.org
United States Power Squadrons
1-888-FOR-USPS (1-888-367-8777) www.usps.org
Boat Owners Association of The United States
1-800-336-BOAT (1-800-336-2628) www.boatus.com
National Association of State Boating Law Administrators (NASBLA)
1500 Leestown Road, Suite 330 Lexington, KY 4051 859-225-9497 859-225-9497 www.nasbla.org
National Marine Manufacturers Associa- tion (NMMA)
200 East Randolph Drive Suite 5100 Chicago, IL 606001 www.nmma.org
Marine Retailers Association of America
155 N. Michigan Ave. Chicago, IL 60601 www.mraa.com
EMU33690
Basic boating rules (Rules of the road)
Just as there are rules that apply when you are driving on streets and highways, there are waterway rules that apply when you are driving your boat. These rules are used inter- nationally. (For USA: and are also enforced by the United States Coast Guard and local agencies.) You should be aware of these rules, and follow them whenever you en- counter another vessel on the water.
EMU33700
Steering and sailing rules and sound signals
Whenever two vessels on the water meet one another, one vessel has the right-of- way; it is called the stand-on vessel. The vessel that does not have the right-of-way is called the give-way or burdenedvessel. These rules determine which vessel has the right-of-way, and what each vessel should do.
Stand-on vessel
The vessel with the right-of-way has the duty to continue its course and speed, except to avoid an immediate collision. When you maintain your direction and speed, the other vessel will be able to determine how best to avoid you.
Give-way vessel
The vessel that does not have the right-of- way has the duty to take positive and timely action to stay out of the way of the Stand-On
Safety information
13
vessel. Normally, you should not cross in front of the vessel with the right-of-way. You should slow down or change directions brief- ly and pass behind the other vessel. You should always move in such a way that the operator of the other vessel can see what you are doing.
The general prudential rule
This rule is called Rule 2 in the International Rules and says, In obeying and construing these rules due regard shall be had to all dangers of naviga- tion and collision, and to any special circum- stances, which may render a departure from the above rules necessary in order to avoid immediate danger. 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 vessels.
EMU25521
Rules when encountering vessels
There are three main situations that you may encounter with other vessels which could lead to a collision unless the Steering Rules are followed:
Meeting:
(you are approaching another ves- sel head-on)
Crossing:
(you are traveling across the oth- er vessels path)
Overtaking:
(you are passing or being passed by another vessel) In the following illustration, your boat is in the center. You should give the right-of-way to any vessels shown in white area (you are the Give-Way vessel). Any vessels in the shad- ed area must yield to you (they are the Give- Way vessels). Both you and the meeting vessel must alter course to avoid each other.
Meeting
If you are meeting another power vessel head on, and are close enough to run the risk of collision, neither of you has the right-of- way Both of you should alter course to avoid an accident. You should keep the other ves- sel on your port (left) side. This rule doesnt apply if both of you will clear one another if you continue on your set course and speed.
Crossing
When two power driven vessels are crossing each others path close enough to run the risk of collision, the vessel which has the oth- er on the starboard (right) side must keep out of the way of the other. If the other vessel is on your right, you must keep out of its way; you are the Give-Way vessel. If the other vessel is on your port (left) side, remember that you should maintain course and direc- tion, provided the other vessel gives you the right-of-way as it should.
Safety information
14
Overtaking
If you are passing another vessel, you are the Give-Way vessel. This means that the other vessel is expected to maintain its course and speed. You must stay out of its way until you are clear of it. Likewise, if an- other vessel is passing you, you should maintain your speed and direction so that the other vessel can steer itself around you.
EMU25531
Other special situations
There are three other rules you should be aware of when driving your boat around oth- er vessels.
Narrow channels and bends
When navigating in narrow channels, you should keep to the right when it is safe and practical to do so. If the operator of a power- driven vessel is preparing to go around a bend that may obstruct the view of other wa- ter vessels, the operator should sound a pro- longed blast on the whistle (4 to 6 seconds). If another vessel is around the bend, it too should sound the whistle. Even if no reply is heard, however, the vessel should still pro- ceed around the bend with caution. If you navigate such waters with your boat, you will need to carry a portable air horn, available from local marine supply stores.
Fishing vessel right-of-way
All vessels that are fishing with nets, lines or
trawls are considered to be fishing vessels under the International Rules. Vessels with trolling lines are not considered fishing ves- sels. Fishing vessels have the right-of-way regardless of position. Fishing vessels can- not, however, impede the passage of other vessels in narrow channels.
Sailing vessel right-of-way
Sailing vessels should normally be given the right-of-way. The exceptions to this are: 1. When the sailing vessel is overtaking
the power-driven vessel, the power-driv- en vessel has the right-of-way.
2. Sailing vessels should keep clear of any fishing vessel.
3. In a narrow channel, a sailing vessel should not hamper the safe passage of a power-driven vessel that can navigate only in such a channel.
Reading buoys and other markers
The waters of the United States are marked for safe navigation by the lateral system of buoyage. Simply put, buoys and markers have an arrangement of shapes, colors, numbers and lights to show which side of the buoy a boater should pass on when navigat- ing in a particular direction. The markings on these buoys are oriented from the perspec- tive of being entered from seaward (the boat- er is going towards the port). This means that red buoys are passed on the starboard (right) side when proceeding from open wa- ter into port, and black buoys are to port (left) side. When navigating out of port, your posi- tion with respect to the buoys should be re- versed; red buoys should be to port and black buoys to starboard. Many bodies of water used by boaters are entirely within the boundaries of a particular state. The Uniform State Waterway Marking System has been devised for these waters.
Safety information
15
This system uses buoys and signs with dis- tinctive shapes and colors to show regulato- ry or advisory information. These markers are white with black letters and orange boarders. They signify speed zones, restrict- ed areas, danger areas, and general infor- mation. Remember, markings may vary by geo- graphic location. Always consult local boat- ing authorities before driving your boat in unfamiliar waters.
Safety information
16
ZMU01708
17
Basic requirements
EMU25540
Fueling instructions
WARNING
EWM00010
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-ventilated area. Refuel portable fuel tanks off the boat.
Take care not to spill gasoline. If gaso- line spills, wipe it up immediately with dry rags.
Do not overfill the fuel tank.
Tighten the filler cap securely after re- fueling.
If you should swallow some gasoline, inhale a lot of gasoline vapor, or get gasoline in your eyes, get immediate medical attention.
If any gasoline spills onto your skin, im- mediately wash with soap and water. Change clothing if gasoline spills on it.
Touch the fuel nozzle to the filler open- ing or funnel to help prevent electro-
static sparks.
CAUTION:
ECM00010
Use only new clean gasoline which has been stored in clean containers and is not contaminated with water or foreign mat-
ter.
EMU34070
Gasoline
Gasohol
There are two types of gasohol: gasohol con- taining ethanol and that containing metha- nol. Gasohol containing ethanol can be used if ethanol content does not exceed 10% and the fuel meets minimum octane ratings. E-85 is a fuel blend containing 85% ethanol and therefore must not be used in your outboard motor. All ethanol blends containing more than 10% ethanol can cause fuel system damage or engine performance problems. Yamaha does not recommend gasohol-con- taining methanol because it can cause fuel system damage or engine performance problems.
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Engine oil
NOTE:
If the recommended engine oil grades are not available, select an alternative from the following chart according to the average
temperatures in your area.
Recommended gasoline: Premium unleaded gasoline with a minimum octane rating of 89 (Pump Octane Number) = (R+M)/2
Recommended engine oil: YAMALUBE 4-M FC-W oil or 4-stroke motor oil with a combination of the fol- lowing SAE and API oil classifications
Engine oil type SAE: 10W-30, 10W-40, 20W-40
Engine oil grade API: SE, SF, SG, SH, SJ, SL
Engine oil quantity (excluding oil filter): 7.8 L (8.24 US qt) (6.86 Imp.qt)
Basic requirements
18
CAUTION:
ECM01050
All 4-stroke engines are shipped from the
factory without engine oil.
EMU33552
Installation requirements
EMU33560
Boat horsepower rating
Before installing the outboard motor(s), con- firm that the total horsepower of your mo- tor(s) does not exceed the boats maximum horsepower rating. See the boats capacity plate or contact the manufacturer.
WARNING
EWM01560
Overpowering a boat can cause severe
instability.
EMU33570
Mounting motor
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 41.
WARNING
EWM01570
Improper mounting of the outboard mo- tor could result in hazardous condi- tions such as poor handling, loss of control, or fire hazards.
Because the motor is very heavy, spe- cial equipment and training is required
to mount it safely.
EMU34951
Digital electronic control requirements
The digital electronic control be equipped with a start-in-gear protection device(s). This device prevents the engine from starting un- less it is in neutral.
WARNING
EWM01580
If the engine starts in gear, the boat can move suddenly and unexpectedly, pos- sibly causing a collision or throwing passengers overboard.
If the engine ever starts in gear, the start-in-gear protection device is not working correctly and you should dis- continue using the outboard. Contact
your Yamaha dealer.
This digital electronic control unit is only available for the outboard motor which you have purchased. Prior to use of the digital electronic control unit, set it in order to operate your outboard
ZMU01710
Basic requirements
19
motor only. Otherwise, it will not be possible to operate the outboard motor. Perform setting of the outboard motor and the digital electronic control unit in the follow- ing cases.
If a used outboard motor is installed
If the digital electronic control unit is re- placed
If the ECM (Electronic control module) of the used outboard motor is replaced
If the ECM (Electronic control module) of the digital electronic control unit is re- placed
Consult your Yamaha dealer for setting.
EMU25702
Battery requirement
CAUTION:
ECM01061
Do not use a battery that does not meet the specified capacity. If a battery that does not meet specifications is used, the electric system could perform poorly or be overloaded, causing electric system
damage.
For electric start models, choose a battery which meets the following specifications.
EMU25712
Battery specifications
The engine cannot be started if battery volt- age is too low.
EMU34190
Propeller selection
Next to selecting an outboard, choosing the right propeller is one of the most important purchasing decisions a boater can make. The type, size, and design of your propeller have a direct impact on acceleration, top speed, fuel economy, and even engine life. Yamaha designs and manufactures propel- lers for every Yamaha outboard motor and every application. Your outboard motor came with a Yamaha propeller chosen to perform well over a range of applications, but there may be uses where a different propeller would be more appropriate. Your Yamaha dealer can help you select the right propeller for your boating needs. Select a propeller that will allow the engine to reach the middle or upper half of the operating range at full throttle with the maximum boat- load. Generally, chose a larger pitch propel- ler for a smaller operating load and a smaller pitch propeller for a heavier load. If you carry loads that vary widely, chose the propeller that lets the engine run in the proper range for your maximum load but remember that you may need to reduce your throttle setting to stay within the recommended engine speed range when carrying lighter loads. For instructions on propeller removal and in- stallation, see page 70.
Minimum cold cranking amps (CCA/ SAE):
700.0 A Minimum marine cranking amps (MCA/ ABYC):
900.0 A Minimum reserve capacity (RC/SAE):
170 minutes
Basic requirements
20
EMU35140
Start-in-gear protection
Yamaha outboard motors or Yamaha-ap- proved digital electronic control units are equipped with start-in-gear protection de- vice(s). This feature permits the engine to be started only when it is in neutral. Always se- lect neutral before starting the engine.
1. Propeller pitch in inches 2. Type of propeller (propeller mark) 3. Propeller diameter in inches
ZMU05937
-
3
1 2
21
Basic components
EMU2579D
Main components NOTE:
* May not be exactly as shown; also may not be included as standard equipment on all mod-
els.
F350, LF350
1
2
3
4
5 6
7
7
8
9
7
10
10 6
ZMU05813
1. Top cowling 2. Anti-cavitation plate 3. Propeller* 4. Cooling water inlet 5. Clamp bracket 6. Tilt support lever 7. Top cowling lock lever(s) 8. Water separator 9. Flushing device 10. Power trim and tilt switch
Basic components
22
1 2 3 4
ZMU05938
5
6
5
6
1. Digital electronic control (single type)* 2. Switch panel (for use with single type)* 3. Digital electronic control (twin type)* 4. Switch panel (for use with twin type)* 5. Clip 6. Engine shut-off switch
Basic components
23
EMU34960
Digital electronic control
The digital electronic control actuates the shifter, the throttle and remote electrical op- erations. Make sure that the active indicator lights and that the digital electronic control unit is correctly connected to the outboard motor.
1
4 6
32
5
ZMU05429
1. Tachometer unit (Square type)* 2. Tachometer unit (Round type)* 3. Speedometer unit (Square type)* 4. Speed & fuel meter unit (Square type)* 5. Speed & fuel meter unit (Round type)* 6. Fuel management meter (Square type)*
1. Control lever 2. Digital electronic control-active indicator 3. Digital electronic control-warning indicator 4. Free throttle switch 5. Throttle friction adjuster 6. Power trim and tilt switch
ZMU05850
1 6
5 4
2
3
Basic components
24
EMU34970
Digital electronic control-active indicator
The digital electronic control-active indicator indicates that the digital electronic control system is i