Yamaha 2-stroke outboard motors spread into the global market

Yamaha 2-stroke outboard motors spread into the global market

Since Yamaha Motor began manufacturing and marketing outboard motors in 1960, they have found markets all over the world where people use and love them as trusted partners on the water, for work and leisure use. Among the growing line-up of Yamaha outboards, the 2-stroke models with their simpler engine structure continue to have a strong customer following. In order to meet the diverse and demanding needs of these devoted customers, Yamaha offers a selection of over 50 2-stroke model variations and over 20 Enduro models.

How did Yamaha Motor become the leading outboard brand on the global market? Two events were especially important in the spread of the brand's popularity. One was the decision to develop a line of Enduro models beginning in 1972. In many countries of the world where outboard demand is primarily for commercial uses, the water quality, weather and climate variance and long hours of continuous use make for a very harsh use environment. Yamaha's Enduro models were designed and engineered with the durability and quality to withstand these extremely demanding use conditions. It was a product development process based on detailed surveys of use conditions and environmental factors made possible by the cooperative efforts of sales and service staff working together with local dealerships throughout the world.
The survey data they gathered was then translated into ambitious development goals and evaluation standards that were tougher than ever before. The first Enduro model to emerge from this development project was named the "E8," and it was soon followed by the E15, E25, E40 and E48. The launch of these models set a new standard for durability and eventually won a following of devoted users worldwide. In the nearly 30 years since the launch of the first Enduro models, they have been improved constantly and continue to be manufactured today as highly matured and proven models.

The second major factor in the growth of Yamaha outboards into a renowned global brand was the move into the US market in 1980s. Compared to commercial-use outboards like the Enduro series, leisure-use outboards had developed along a different set of demands, among which lightness Yamaha 2-strokes, the reliable power of choice for users worldwide and compactness were important qualities. Fully aware of these fundamental differences, Yamaha Motor became the world's first outboard manufacturer to develop separate lines for commercial and leisure use. The development of Yamaha's leisure-specific outboards began in 1981, and within three short years the project produced a line-up of 12 2-stroke models ranging from 40 to 220 hp and exemplified by popular models like the 150A. With this line-up, Yamaha Motor went to the 1983 Chicago Boat Show and launched its entry into the important US market.

Success in the USA wins Yamaha’s large horsepower outboards a place in the global market

Exclusive Yamaha technologies including highly durable paint finishes and anti-corrosion measures, along with the rugged durability honed in the world's most demanding commercial-use markets, helped win the Yamaha brand a reputation for durability and reliability in the leisure-use sectors of the US and other mature marine markets. This set Yamaha Motor on course to become the acknowledge world leading brand it is today. Yamaha Motor continues to value the use-specific, market-oriented approach that made it a global brand.
While for the leisure-use markets Yamaha has led the way in developing a growing line-up of high-quality 4-stroke models, at the same time we continue to offer a proud line-up of 2-stroke models ranging from 2 to 250 hp for commercial-use oriented markets around the world. What's more, these models come in a very large number of variations tailored to specific regional and local requirements regarding factors like the actually use conditions and the types of boats they are mounted on. It is this Yamaha dedication to specific customer needs that makes us the brand of choice used and loved by people all over the world today.

Outboard engine / outboard engine

Outboard engine / outboard engine

An outboard motor is a drive system in which the engine and drive parts are mounted on the outside of the hull and is commonly used in small class boats. Basically, there is a mounting method called "out bracket" which is attached directly to the transom of the boat or attached to a bracket integrally formed with the hull, and the rudder is usually made by turning the outboard motor, so it usually has a separate rudder not.

[Merit of outboard motor]

- We can utilize space in shipboards including cockpit effectively.
- Since only the outboard motor can be removed from the boat, maintenance such as repair is good.
- The cabin is relatively quiet because the engine is behind the hull.

Boats with high performance specifications that can be equipped with two high horsepower engines are also increasing. The main engines used are four-stroke gasoline engines, with a wide range of horsepower from 2hp to high horsepower up to 350hp, which can be selected according to various boats and usages. It is a big feature of the machine.

Why Maintenance

Yamaha wants you to have an outstanding ownership experience. Maintenance plays a big part in that. We’ve learned a lot about caring for outboards during our many years as an outboard manufacturer; so here’s some knowledge and simple tips on the subject.

From their painstaking design to their meticulous construction, Yamaha outboards are manufactured to provide you with years of enjoyment. However, they live in one of the harshest environments imaginable. High load, high-RPM operation, extreme temperatures and humidity, saltwater, sun, even long periods of non-use can all exact a heavy toll. And it’s not just Yamaha outboards. All outboards face these same challenges. Regular maintenance is important in helping your outboard meet the demands of these challenging environments, and only you can make sure it happens.

Spending a relatively small amount of time making sure your outboard’s in proper condition is simple to do, and:

• You’ll have more hours of trouble-free enjoyment on the water.
• You’ll preserve your investment with a higher resale value.
• Your boat will be ready when you are.
• It’s easier and costs less to maintain than repair.
• Yamaha dealers stand ready to help.

What are the basics? Keep your outboard ready to run with basic maintenance like:

• Changing engine and lower unit oils every 100 hours
• Flushing regularly
• Replacing fuel filters periodically
• Helping to prevent corrosion

Outboard maintenance doesn’t need to be difficult or expensive. Whether you do it all yourself or have one of approximately 2,000 authorized Yamaha Marine dealers do parts of it for you, we’re committed to helping you maintain your outboard in a way that’s easy to do and easy to understand. Let’s get started.

Power Trim and Tilt

Power Trim and Tilt

Your outboard’s Power Trim and Tilt unit changes the outboard’s thrust angle during operation for maximum performance of both your outboard and your boat. It’s electro-hydraulic, meaning an electric pump moves hydraulic fluid upon command from the operator, tilting the thrust angle out or in. It’s positioned inside the engine bracket, meaning almost constant contact with water, and, depending on where you boat, that can mean saltwater. Still, under normal conditions, this system needs only minimal care in order to function properly.

Cleaning

Make sure to include the PT&T unit in your routine post-trip flushing and wash down procedure. For best effect, first run over it gently with a sponge or a soft cloth soaped up with mild detergent like Yamaclean®. Then, spray the whole unit down with fresh, clean water.

Lubrication.

Periodically grease the top of the trim rams on your PT&T unit to help keep them safe from corrosion and to eliminate those annoying, but harmless, squeaking and popping noises. Be sure to use a high-quality marine-formula grease, like Yamalube® Marine Grease, so it won’t wash off so fast.

Protection.

Keep the trim rams fully retracted when not in use to prevent corrosion build-up. Engage the tilt lock mechanism built into the outboard’s bracket, or install a Yamaha engine support to hold the engine in the tilt-up position. Then, withdraw the tilt rams into the unit by pressing the PT&T down button until they are fully retracted. This keeps all but the very tip of the ram immersed in a bath of PT&T fluid and safe from corrosion. Liberally apply Marine Grease to the ram tips to help keep them corrosion free, too.

 Tip: The built-in tilt lock mechanism is for maintaining tilt for storage or periods of non-use only, such as when mooring. Do not trailer using only this mechanism to support the tilted outboard.

Fluids.

The fluid in your PT&T system is under extreme pressure that can cause molecular shear, which tears apart the fluid’s molecules, resulting in a drastic loss of lubricity. Don’t use substitute oils like motor oil or power steering fluid. Yamaha Performance Power Trim & Tilt Fluid is specially formulated to tolerate a specific amount of water ingestion and still maintain proper operation, all while withstanding extreme pressures. It also contains special anti-foaming agents the others don’t, to maintain critical lubricity.

Valves and Seals.

If you see fluid on the outside of the PT&T unit, or if your outboard won’t stay tilted up (or stay tilted out when running), it may mean that the seals or internal valves are in need of inspection. Have the unit inspected by an authorized Yamaha Marine dealer and, if necessary, disassembled and repaired.

Propeller Maintenance

Your propeller is a key factor in your boat’s performance, and your satisfaction; so don’t overlook it. Maintain it for peak power, performance and efficiency.

It’s all in the eyes.

Give your prop a good look as part of your pre-launch checklist. Are there any bends, nicks, cuts or cracks? Any of these will rob performance and potentially cause damaging vibration to your outboard. If found, get the prop examined and repaired by a qualified propeller repair facility. Your local Yamaha Marine dealer is a great place to start.

Something missing?

If you’ve noticed a decrease in your boat’s performance, but your outboard checks out fine, you’d do well to suspect your prop. Suspended grit, sand and silt in the water slowly eat away at your propeller’s edges. When this happens, your prop may look perfect, but the worn edges can seriously degrade performance.

Beware corrosion.

Even stainless steel props can experience surface discoloration. But it’s easy to clean and protect most props. Try these simple tips:

Rough Cast Mag Wheel Cleaner. Spray on (use caution near painted surfaces), do not let dry or sit more than 30 seconds, agitate with dish sponge, rinse thoroughly, dry, apply paste wax.

Toilet Bowl Cleaner, Hydrogen Peroxide, or Calcium Lime & Rust Remover. For spot cleaning: spray on or put on a rag and wipe over stained area (do not allow to dry). Rinse thoroughly, dry, and follow up with paste wax.

Mild Rubbing Compound or Metal Polishing Paste. For difficult stains: apply to pad and rub in a circular motion until stain is diminished. Buff with a clean cloth, apply paste wax.

Protect the propshaft.

Periodically remove your propeller(s), check for fishing line wrapped around the prop shaft, then grease the prop shaft with a high-quality, high-pressure marine-formula grease like Yamalube® Marine Grease or Molybdenum Grease. This will help make it easier to get the prop off next time, especially in saltwater. When re-installing your propeller, make sure to torque the prop nut to the manufacturer’s specification, and always use a new cotter pin rather than re-using the old one.

Be prepared.

Just like a spare tire, you may need more than one prop. Whether you demand different levels of performance or just want a spare for emergencies; having a second propeller is a very wise choice

Ship Maneuvering During Stormy Weather

Ship Maneuvering During Stormy Weather

It is premised that the departure of the port is cancelled when the stormy weather is expected, and if the weather collapses while sailing, it is expected that the ship will return immediately, but it may be forced to maneuver under the stormy weather. There is a wave change that comes to the point there, but even if you say 1 m wave height, it is not a wave with the same degree of danger. In addition, the shape and period of the waves are greatly different depending on the topography of the sea area and weather conditions. 

Furthermore, safety also varies depending on the structure and size of the ship and the shape of the bottom of the ship, so it is necessary to have some knowledge of how to maneuver in rough weather.

1. It slows down and prevents the bow from falling down the waves into the valley.
2. As the needle holding becomes unstable on this downward slope, correct the course in small steps early.
3. On the uphill, adjust the throttle to control as long as possible this position.

Ship handling point at the time of a wave

Ship handling point at the time of a wave

(1) I climb the waves and slow down when the bow is about a third of the peak. By decelerating, the propeller resists and the bow goes down so as to pass the surface of the wave, so there is no impact. (See Figure A)

(2) Go to the valley and power up just before the bow falls in the valley.

(3) Wave up in the accelerated state and return to (1). However, it is important to be careful if you go beyond the waves with the power-up, as the hull jumps forward from the waves and may be hit on the surface of the next wave, which may cause injury or damage to the hull. (See Figure B)

Problem Occurs

If a Problem Occurs
Boat problems and accidents that occur offshore include collision, riding, overturning, fires, and engine failure. If you do not take appropriate action promptly if such a situation occurs, you will lead to a secondary trouble.
(1) Grasp the situation (personnel) With Drabble, we will promptly confirm whether there are any people who have run-off or injuries on our personnel and grasp the situation.
(2) Confirmation problems of the status (hull, engine, drive etc.) confirm and understand the situation of the hull, engine etc.
(3) Confirmation of location information
Confirm and understand current position.
First, the above initial response will be performed, but the basic priority is human life. If there is a human being or not, or if there is a water dropper, it can be rescued on its own or it can be navigated on its own, and the master's appropriate judgment of the situation is required.
(4) After confirming the rescue request status, if you decide that you can not respond by yourself, we will immediately request the marina for rescue, and will accurately report the situation, current location, and the presence or absence of an injured person.
(5) Implementation of measures to prevent secondary problems We will handle
as much as possible before the rescue arrives.
• If there are people with bruising, give first aid.
• If you are drifting due to engine trouble, put an anchor and stop the drifting.
• If the water is deep, insert a sea anchor to make it difficult for the waves to flow.
• If there is flooding, take action such as operating the bilge pump.
• Watch the situation around you.
• Prepare for towing.
Many problems with boats can not be navigated by themselves like this, from problems such as engine troubles and damage to drives and propellers to problems caused by rudimentary mistakes such as running out of fuel and rising batteries. One of the first things to consider when doing that is to prevent secondary problems. If the boat is swept away by wind or tide, it may be launched in the shallows, or there may be a collision with the ship in the harbor. In addition, depending on the sea area, it may cause a secondary accident called a capsize in response to a transverse wave.

A: Even if the anchor does not reach, the anchor may be heard in a situation where the water depth has become shallow by being flowed with the anchor inserted.
B: If you do not have a sea anchor, tie something to the rope such as a bucket or cooler back that will resist in the water.

Overturn Prevention of Triangular Wave

Overturn Prevention of Triangular Wave
The triangular wave is not directional and the periodicity is also unpredictable. Under such circumstances it is said that the speed of the rudder is effective, but increasing the time above the triangle wave will put the ship longer under unstable conditions, so at the top of the wave as much as possible Make it pass in a short time.
The triangle wave is like supporting the hull at a point on the top of the cone. Therefore, even the direction of overturning can not be expected in many cases, and it will be delayed in its treatment after it starts to tilt. (Refer to Fig. C)
Moreover, not only the triangular wave, but the trigger to lead to the overturn is complicated because many elements are intertwined in a complex manner, so proper maneuvering technology is required. Smaller boats have the effect of lowering the center of gravity just by lowering the attitude of the passenger, and by considering the balance between the left and right centers of gravity, boat stability is enhanced. But rather than that, it is important to choose a safer course and evacuate quickly, even if you are circling, if you decide that it is getting worse.

Name and role of each part of the boat

Name and role of each part of the boat
1 bow split
Structures that project further forward than bows. In the case of a small boat, an anchor roller or the like is attached to this part, and when winding up the anchor from there, the boat is made to jump forward so as not to damage the hull. It is also used when people move from the bow at quay walls etc.
2 stem
Prow. It is a member / part that forms the tip of the boat, and it has a very robust structure because a large force is applied at the part that cuts the waves.
3 keel
It is the most rigid structure of the boat because it is the part that secures the strength in the longitudinal direction of the boat in the part that corresponds to the human spine.
4 decks
About the deck. In some cases, it refers to the flat part of the boat. The bow deck is called the bow deck, and the stern deck is called the stern deck.
5 transom
Flat surface of the stern part. The outboard motor mounting plate is also called a transom board.
6 motor well
Point to the recessed area in front of the transom board. It is also a blank space part when the outboard motor moves to the left and right.
7 Hull
Hull.
8 Gunnel
Hull and deck junction. As it receives an impact at the time of berthing, it has a strong structure.
9 Bow rail
Anti-fall fences for fishing on the prow deck and for lifting and lowering anchors.
10 Bow thruster
A propeller mounted to propel the boat laterally. There are two cases: bow only and stern and both.
Hull part name and role

PRE-LAUNCH CHECKLIST

PRE-LAUNCH CHECKLIST
In the pre-launch checklist below, you’ll find information that you can use to help make sure you fully enjoy your day on the water. It’s regular attention to these basic items that will help make boating the safe and enjoyable experience it’s meant to be.
1. Inspect dock and heaving lines
2. Check navigation lights
3. Check anchor and tackle
4. Inspect trailer winch
5. Care for rear wheels of your tow vehicle the same as trailer wheels (see #9)
6. Ensure registration numbers are properly displayed, plus current registration and other necessary 5 documentation is onboard
7. Ensure trailer hitch and safety chains are secure, and inspect trailer wires and connections
8. Check hull for damage, soft spots or blistering
9. Grease bearings, ensure lug nuts are tight and not rusting, check tire tread and pressure
10. Test bilge pump
11. Check gauges
12. Test marine radio
13. Check magnetic compass, charts and navigation tools
14. Check engine oil for level and color
15. Check fuel system for leaks (visual and “sniff test”). Check fuel level for trip (1/3 out, 1/3 return, 1/3 spare)
16. Ensure battery connections are clean and tight
17. Replace anodes if over half gone
18. Check propeller for damage, shaft for debris, prop nut torque
19. Test trim, tilt supports and inspect rams. Ensure proper trailering support is used
20. Ensure scuppers are clear, bilge clean and drain plug installed
21. Check transom for cracks
22. Inspect trailer bunks for damaged boards or torn carpet
23. Ensure trailer lights are sealed and working

A history of Yamaha Spirit of Challenge

A history of Yamaha Spirit of Challenge
Introducing the 50-year history of Yamaha outboard motors (1960-2010)

In 2010, fifty years have passed since the birth of the first Yamaha outboard motor. Now Yamaha Motor has established itself as the world's outboard motor brand and in March of 2010 the company's total outboard production reached the momentous 9 million mark. But, the history of this half century of Yamaha outboard motors has not always been a smooth sailing, there have been rough waters along the way. In this long history of trying to build outboards that will bring true joy and satisfaction to the world's users, there were many difficulties and obstacles to overcome. But, through it all, the Yamaha people involved in engineering, manufacturing, marketing and service, kept the "Spirit of Challenge" that is at the heart of Yamaha Motor's corporate culture and overcame every obstacle. They continued to open up new horizons by taking on new challenges.

Challenge: An outboard development project started from scratch
The development project for the first Yamaha outboard motor began back in 1958 with a project staff of just two engineers. At the time, everything was new to them as they started from scratch to build the company's first marine engine. Soon after the project's start the staff grew in number and preparations began to move into production. At the time, however, there were no set standards for testing and the development process involved simply running the prototypes 24 hours a day and investigating how to improve the parts that broke down. The project had started from zero and its final result after overcoming many obstacles and hardships was Yamaha's first outboard motor model, the "P-7" that was marketed in Japan in 1960. In fact, however, it was still far from being a perfect outboard motor. For example, as one of the engineers from that time recalls, it was particularly loud and had a high level of vibration. This led to jokes from fishermen such as, “You can tell it is an outboard built by a musical instrument maker - it puts out quite a sound"

Yamaha 4-stroke Outboard Development

Yamaha 4-stroke outboard development, a history of technological innovation and environmental measures
Born in 1984 - the first Yamaha 4-stroke outboard motor

After winning a strong reputation as a builder of reliable 2-stroke outboard motors, Yamaha outboards began to win recognition as one of the world's leading brands thanks to the quality of its technological innovations to make engine performance eco-friendlier. During the 1990s, developed nations led the way in introducing regulations to limit the environmental impact of products, as exemplified by the emissions regulations adopted in the USA. This forced the outboard motor makers to direct their development efforts toward more eco-friendly engine technologies.

Prior to this trend, Yamaha had already developed and marketed its first 4-stroke outboard motor, the F9.9A, in Europe in 1984. With subsequent development, the F9.9 became the first outboard to clear the strict environmental regulations implemented in 1992 for boat engines used on Bodensee, the lake on the borders of Germany, Austria and Switzerland.
Another big advancement came in 1998 with the release of the 4-stroke model F100A powered by a DOHC 16-valve, in-line 4-cylinder engine that gave it the highest power output and best environmental performance in its class. Coming in a number of variations for specs like transom length and propeller type, this model made it possible to outfit a wide variety of different boat types around the world with 4-stroke engines. This F100A model opened the way to the development of increasingly larger horsepower 4-strokes and eventually the F350 that now tops the line-up as the flagship of Yamaha's 4-stroke outboard motors.

Surprising the world with Yamaha's big horsepower 4-stroke outboard technology
Amid the development of increasingly large 4-stroke outboards, the epoch-making model that completely changed the image of what a big-horsepower 4-stroke outboard could be was the F225A, which at its release had the largest horsepower of any production 4-stroke outboard in the world.
In the outboard motor industry at that time, it was generally accepted knowledge that it would be very difficult to build a viable 4-stroke outboard motor of over 200 horsepower. Yamaha engineers refused to accept that assumption, however. At the time of its release, the F225A featured a number of innovative technologies and revolutionary designs, including an exclusive combustion chamber design that enabled higher power output with a smaller displacement, a 60-degree V angle and internal injectors, plus a new engine layout with what came to be called the "In-bank Exhaust System" that positioned the exhaust system inside the V bank of the cylinders for greater compactness.

With this, Yamaha became the first 4-stroke outboard motor maker to try an engine layout that ran the exhaust pipes through the V bank and moved the intake system outside the block. Furthermore, by reducing the size and weight of many parts, changing the layout and using innovative new ideas and technologies throughout the engine, Yamaha succeeded in creating a 4-stroke outboard motor with higher output in a smaller package than anyone had thought possible before.
With ongoing efforts to apply new technologies in innovative designs, Yamaha succeeded in building a line-up of 4-stroke outboard motors ranging in size from 2.5 to 350 horsepower.
Then, in the autumn of 2010, Yamaha introduced its new V6/4.2 liter series. Once again, these models achieved extraordinary levels of weight reduction with new features like sleeveless cylinders made through new plasma fusion technology, all of which allowed Yamaha to build 4-stroke outboards with comparable weight to 2-strokes.

Outboard engine oil

Outboard engine oil
You can check the main check points of the outboard motor boat.
Provides a general overview of the inspection. Specifically, please refer to the instruction manual of each product, warranty card, maintenance notebook.
Outboard engine oil

Engine oil lubricates, cools, seals, and cleans the inside of the engine to smoothly rotate the engine.
Deterioration of engine oil

Engine oil change time
Time for replacement
The first 10 hours after use
every 6 months or every 100 hours
advice
• Failure to replace the engine oil will accelerate wear on the sliding parts such as pistons and bearings, which will affect the durability, and in the worst case, may lead to engine seizure. Please replace it regularly.
• Engine oil not only deteriorates but gradually decreases. It is also necessary to carry out frequent checks and refilling if there is a shortage.

Yamaha Outboard Engine

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The long-selling of YAMAHA "85A"

The Long-Selling of YAMAHA "85A"
Why the 2-stroke outboard 85A has been used and loved by people worldwide for 30 years

30 years of delivering high performance and reliability
For over 50 years since the launch of the first Yamaha outboards motor, the company's dedication to technological advancement and innovation has produced a series of models that set new standards of excellence for each new era. Of these many products of this proud tradition of Yamaha technological innovation over the past five decades, there are a number of models that have maintained devoted followings of satisfied customers without changing in look or reliable basic design for many years. One of these models is the "85A" 2-stroke outboard.

The 85A is the oldest model in the Yamaha outboard line-up to continue to sell in its original form without being replaced by a new-generation model. When it was first released in 1978, it had the largest horsepower in the Yamaha line-up and was soon selling throughout the world. Customers loved and trusted this model so much that it is still selling today in about 100 countries and regions worldwide, primarily in the commercial-use market. In today's world, this is truly an amazing record that perhaps no other model will ever match.

It is also worth noting that the outstanding durability, reliability and performance of the 85A made its design and engineering the working base for a number of variations that appeared one after another. Of these, the 55D, 75A, 75C and 90A as well as the Enduro models E60J, E65A and E75B are still in production today. 

In this feature article we focus on the 85A and how it became a long-proven "masterpiece" of the Yamaha line-up.

Ship Handling Point At The Time Of A Wave

Ship handling point at the time of a wave

(1) I climb the waves and slow down when the bow is about a third of the peak. By decelerating, the propeller resists and the bow goes down so as to pass the surface of the wave, so there is no impact. (See Figure A)

(2) Go to the valley and power up just before the bow falls in the valley.

(3) Wave up in the accelerated state and return to (1). However, it is important to be careful if you go beyond the waves with the power-up, as the hull jumps forward from the waves and may be hit on the surface of the next wave, which may cause injury or damage to the hull. (See Figure B)