Yamaha F90 LA

Description

We have a new Yamaha F90LA for sale, crated and ready to ship worldwide. The F90LA is the earlier A version of Yamaha’s 90 HP four-stroke, with a 20 inch shaft, electronic fuel injection and a dual overhead cam four-cylinder. It is a motor that a lot of mechanics know inside out, which makes it an easy one to own and service almost anywhere in the world.

If you are matching an existing F90LA on a twin setup, replacing a worn one with the same model, or just want a proven 90 that your local mechanic already knows, this page is for you. For a delivered price, send us a message.

Yamaha F90LA Specifications

Each Yamaha F90LA for sale on our site is new and matches this sheet.

F90LA vs the Newer F90LB

Yamaha has made more than one generation of the F90. The F90LA is the earlier one. It uses a 1.6 litre four-cylinder with dual overhead cams. The newer F90LB moved to a larger 1.8 litre block with a single overhead cam, and it is a little lighter.

So why would anyone choose the A version? A few good reasons.

Matching. If you run twin F90LAs and one needs replacing, matching the same model keeps the controls, rigging and behaviour identical on both sides.

Familiarity. Many mechanics have years of experience with this exact motor. Parts and procedures are well known.

Rigging. If your boat was rigged for an F90LA, a like-for-like swap is about as simple as a repower gets.

If you are starting fresh and do not need to match anything, have a look at our Yamaha F90LB too. Both are good motors. The Yamaha F90LA for sale here makes the most sense when matching or familiarity matters to you.

The Powerhead

The F90LA’s 1.6 litre four-cylinder uses dual overhead camshafts. It is a smooth, free-revving engine that makes its 90 HP at 5,500 rpm. Electronic fuel injection meters fuel accurately for clean starts and steady running, and a TCI microcomputer ignition handles timing. Lubrication is wet sump, like a car, with a 4.5 quart oil capacity. No oil mixing, no oil injection tank to top up.

The motor is thermostatically cooled, so it warms up quickly and runs at a steady temperature. It also has a freshwater flush fitting, which makes rinsing after salt runs easy.

Variable Trolling RPM

With Yamaha’s Command Link system, the F90LA offers variable trolling rpm. You can adjust idle speed in 50 rpm steps, between 600 and 1,000 rpm, from the gauge, without touching the throttle. For anglers who troll, that is a very useful feature. It holds a steady trolling speed through wind and current and saves a lot of fiddling with the throttle lever. Command Link is optional equipment, so ask us if you want it with your Yamaha F90LA for sale.

Corrosion Protection

Yamaha fitted the F90LA with its Ultimate Corrosion Protection system as standard. That includes corrosion-resistant alloys, a multi-layer paint system and sacrificial anodes. In salt water it holds up very well, as long as you do your part: flush after every trip, rinse the outside, check anodes and tilt the motor up when moored.

Which Boats Suit It

• Aluminium fishing boats, 16 to 18 feet
• Small centre consoles and skiffs with a 20 inch transom
• Pontoons with light to moderate loads
• Runabouts and family boats rated for 90
• Tenders and small workboats
• Twin installations on boats already running F90LAs

Check your capacity plate and measure your transom. If the boat is rated for 90 HP and the transom is about 20 inches, the Yamaha F90LA for sale here should fit.

Props

With a 2.31:1 gear ratio, the F90LA turns a fairly wide range of props. You want the motor to reach between 5,000 and 6,000 rpm at full throttle with your normal load. If it falls short, drop pitch. If it over-revs, go up. Aluminium props are fine for most family and workboats. Stainless props give better grip and a bit more speed on faster hulls. Props are optional equipment, so tell us your boat and we can suggest one. Yamaha’s propeller guide is also handy.

Rigging

The F90LA is a remote-control motor. You will need a Yamaha control box, throttle and shift cables, a wiring harness, a key switch, a gauge, steering, a fuel line with a water-separating filter and a good marine starting battery. If you are replacing an existing F90LA, most of your rigging can usually stay as it is. A tiller handle kit is available as an option for owners who want tiller steering.

We recommend having a Yamaha dealer or qualified marine mechanic install the motor. Warranty terms depend on your country, so ask your local dealer once the motor is registered.

How to Order

1. Message us through the contact page.
2. Tell us the model, how many and where you are.
3. Add any props, controls, Command Link gauges or parts.
4. We send a delivered price.
5. You confirm and pay.
6. We ship with FedEx, UPS or USPS and send tracking.

Read our refund and return policy and terms and conditions before you order.

More Yamaha 90s

• Yamaha F90LB, the newer 1.8 litre version
• Yamaha F90XB, 25 inch shaft
• Yamaha V MAX SHO 90, the performance 90
• Yamaha F90JB jet, for shallow rivers

Or browse the 90 HP Yamaha range, all Yamaha outboards and the shop. Read customer reviews, more about us, and tips on our blog. Yamaha’s official site has more on the F90 family.

Matching a Twin Setup

One of the most common reasons people look for a Yamaha F90LA for sale is a twin installation. Some boats, like larger pontoons, catamarans and certain workboats, run two 90s side by side. When one motor gets old or has a major failure, the owner faces a choice: replace both, or replace one.

If the remaining motor is still in good shape, replacing just the bad one with the same model makes a lot of sense. Here is why matching matters.

Same behaviour. Two identical motors respond the same way to the throttle. The boat tracks straight and handles predictably. Mismatched motors can pull slightly differently, which makes the boat harder to drive.

Same controls. A twin binnacle control is set up for a pair of motors. Matching models keep throttle and shift travel the same on both sides.

Same props. With the same gear ratio, you can run the same props on both motors, and carry one spare that fits either side.

Same gauges and wiring. Your existing harnesses and gauges are already set up for the F90LA. No new wiring needed.

Same spares. One set of filters, plugs and impellers covers both motors.

For all those reasons, if you run twin F90LAs, the Yamaha F90LA for sale here is the simplest replacement. Tell us whether your boat runs standard rotation on both sides or a counter-rotating pair, and we will make sure you get the right motor.

Like-for-Like Repowers

Even on a single-engine boat, a like-for-like swap is the easiest repower there is. The new motor bolts to the same holes. The controls, cables, harness and gauges usually connect straight up. The prop you already have often fits. A mechanic can often do the whole job in a fraction of the time a full repower takes.

That keeps the overall cost down. When owners compare the Yamaha F90LA for sale here against a different model that needs new controls, new wiring and new gauges, the like-for-like option often wins on total cost, even before you count the time saved.

It is still worth a quick check while the old motor is off. Look at the transom for soft spots or cracks, replace old fuel hoses, fit a fresh water-separating filter, and check the steering for wear. It is easier to do these jobs with the motor off than after the new one is hung.

Running the F90LA

Owners who have run an F90LA before will know what to expect. It starts easily, thanks to fuel injection. It idles smoothly. It revs freely, as dual overhead cam engines tend to, and it makes its peak power at 5,500 rpm. At cruise it is quiet and economical, with no smoke and no smell.

The 25 amp alternator is enough for a typical small boat’s needs: a fish finder, a GPS, a radio, nav lights and a bilge pump. If you run a lot of extra electronics, consider a dual battery setup to keep the starting battery charged.

On the water, the Yamaha F90LA for sale here behaves just like the motors many boat owners have trusted for years. That predictability is a big part of its appeal.

Break-in

A new motor needs ten hours of careful running. Keep it at low to moderate speeds at first, vary the rpm and avoid long runs at full throttle. The owner’s manual has the exact steps. After the break-in, change the engine oil and filter and the gear lube. That first oil change takes out the fine particles that come from new parts wearing in, and it is one of the best things you can do for the life of the engine.

Maintenance

• Flush with fresh water after every trip using the flush fitting.
• Check the tell-tale stream every time you start.
• Change engine oil and filter at the hours in the manual or each season. Capacity is 4.5 quarts.
• Change gear lube every season and check it for water.
• Replace the water pump impeller on schedule.
• Check anodes and replace when worn.
• Change fuel filters and use fresh fuel with at least 87 octane.
• Grease fittings, the steering and the tilt tube.

A Yamaha F90LA for sale from us, kept on this schedule, will give you many years of steady service.

Living With It in Salt Water

A lot of F90LAs live on the coast. The Ultimate Corrosion Protection system gives it a good start, but salt never stops working on metal. Here is a simple routine that keeps the Yamaha F90LA for sale here looking and running well.

After every saltwater trip, connect a hose to the freshwater flush fitting and run fresh water through the cooling system for several minutes. The motor does not need to be running for the flush fitting to work, which makes it easy to do at the dock or in the driveway.

Rinse the outside of the motor, especially the bracket, the tilt tube, the steering and the gearcase. Salt crystals left on the surface eat paint and fasteners.

Check the anodes once a month or so. They are designed to corrode so the motor does not. When they are about half gone, replace them. Never paint them, because paint stops them working.

If the boat lives in the water, tilt the motor up when you are not using it. A gearcase sitting in salt water for days on end corrodes much faster.

Every few months, spray the electrical connections under the cowling with a marine corrosion inhibitor. Keep the battery terminals clean and tight.

Owners who stick to this get many years out of their motors. Owners who do not end up replacing parts that should have lasted much longer.

Fuel Tips

The F90LA runs on regular unleaded with a minimum pump octane of 87. That keeps running costs down. Fuel injection is sensitive to water and dirt, though, so a few habits help.

Fit a water-separating fuel filter between the tank and the motor, and change the element on schedule. If it has a clear bowl, check it before every trip and drain any water.

Buy fuel from busy stations where it does not sit for long. Keep your tank vent clear and the fill cap sealed, so rain and spray stay out.

If the boat sits for more than a few weeks, add fuel stabiliser and run the motor long enough to get treated fuel through the system. Old fuel causes hard starting and rough running.

These are small things, but they are what keep a Yamaha F90LA for sale from us starting first time and running smoothly for years.

Winter Storage

1. Fill the tank and add stabiliser, then run the motor to circulate treated fuel.
2. Change the oil and filter so old oil does not sit in the engine over winter.
3. Change the gear lube and check for water.
4. Flush the motor and let it drain in the down position.
5. Fog the engine as described in the manual.
6. Grease all the fittings.
7. Put the battery on a maintainer.
8. Cover the motor to keep out dust and animals.

In spring, check everything, reconnect the battery and start the motor on water before your first trip.

Shipping Worldwide

We ship to buyers in the Americas, the Caribbean, Europe, Africa, the Middle East, Asia, Australia and the Pacific. The motor travels in its factory crate, with tracking from the day it leaves. Its shipping weight is around 369 lb. Import duties and taxes depend on your country, so it is worth checking with your customs office or a broker before it arrives. When the crate lands, inspect it before signing, and take photos of any damage. Keep all the paperwork for your local Yamaha dealer.

If you are ordering the Yamaha F90LA for sale for a remote location, tell us. We can include a spares kit in the same shipment so you are covered for the first season or two.

Spare Parts to Order With It

A small kit is worth having, especially if you live far from a dealer: engine oil and a filter, gear lube with new drain plug gaskets, a water pump impeller kit, a set of spark plugs, fuel filter elements, anodes and a few fuses. A spare prop is also a good idea. We can add any of these to your Yamaha F90LA for sale order.

Who Buys the F90LA

Owners matching a twin installation. Boat owners replacing a worn F90LA with the same model. Workboat and tender operators who want a motor their mechanics already know. Dealers keeping stock for customers with older Yamaha rigs. If you need more than one Yamaha F90LA for sale, tell us how many and we will quote them together.

Is This the Right 90 for You?

Choose the F90LA if you are matching an existing motor, repowering a boat already rigged for one, or you simply want a well-known motor your mechanic is comfortable with. Choose the newer F90LB if you are starting fresh and want the latest 1.8 litre design. Either way, you are getting a Yamaha four-stroke with a strong reputation. If you are not sure which suits your boat, send us the details and we will give you an honest recommendation, whether that is the Yamaha F90LA for sale here or another model in our range.

Questions to Ask Before You Buy

Whoever you buy from, it pays to ask a few questions first. Here are the ones I would ask about any Yamaha F90LA for sale, and the answers you will get from us.

Is it new and in the original crate? Yes. Never run, factory packed.

Is the price delivered? Our quotes include the crate and shipping to your country. Duties and taxes depend on your local rules.

Which carrier ships it? FedEx, UPS or USPS, with tracking.

Is a prop included? No. Props are optional because every boat needs a different one. We can add one to the quote.

What paperwork comes with it? The owner’s manual and standard Yamaha paperwork your local dealer needs to register it.

What if something is wrong when it arrives? Photograph any crate damage before signing and message us straight away. Our return policy is on the site.

A seller who answers these clearly is a seller you can work with. If anything about the Yamaha F90LA for sale here is unclear, ask us before you pay. We would much rather answer a question up front than deal with a misunderstanding later.

And if you are buying for a twin setup, send a photo of the serial plate on your existing motor. We will check it matches before we ship the Yamaha F90LA for sale to you.

Frequently Asked Questions

Is the Yamaha F90LA new?

Yes. Every Yamaha F90LA for sale on our site is new and in the factory crate.

What is the displacement?

The Yamaha F90LA for sale here has a 1,596 cc (1.6 litre) DOHC four-cylinder.

How much does it weigh?

The Yamaha F90LA for sale here weighs 369 lb, or 168 kg.

What oil capacity does it have?

4.5 US quarts. Yamaha recommends Yamalube 4M.

Is a prop included?

No, props are optional. We can add one to your quote.

Do you ship worldwide?

Yes, with FedEx, UPS and USPS.

Get Your Price

If you need a proven, familiar 90 or want to match an existing motor, the Yamaha F90LA for sale here is a solid choice. Send us your country and how many you need, and we will reply with a delivered price.

Ready to order the Yamaha F90LA for sale? Add it to your cart above, or send us your location for a delivered quote. We ship worldwide with FedEx, UPS and USPS, crated and tracked, and we are always happy to help with rigging questions before and after the motor arrives at your door.

Still deciding? Message us with your boat details and we will tell you honestly whether the Yamaha F90LA for sale is the right motor, what rigging you will need and what it will cost delivered to your door. We answer every message personally, and there is never any pressure to buy. If it is not the right fit, we will point you to the model that is.