SUZUKI 90 HP DF90ATX OUTBOARD MOTOR

Description

We have the Suzuki DF90ATX for sale new in the factory crate. It is Suzuki’s 90 horsepower inline 4 four stroke with a 25 inch shaft, power trim and tilt, electric start and remote steering, finished in Pearl Nebular Black. It is a favourite on pontoons, aluminium fishing boats and small runabouts.

We sell new outboards to private owners, fishing operators, boat builders and dealers, and we ship worldwide. Tell us where your boat is and we send you a delivery quote before you commit to anything. Keep that in mind when you set up the Suzuki DF90ATX for sale.

Below you will find the full specs, what the model code means, the boats it suits, rigging, maintenance and the questions buyers ask us most. It is a long page on purpose. A motor like this is a serious purchase and most people want the details first.

Suzuki DF90ATX for sale: Specifications

Numbers can move a little between production runs, so the paperwork in the crate is the final word. Suzuki keeps the current figures on its DF90A page on Suzuki Marine if you want to compare models side by side.

What the Model Code on the Suzuki DF90ATX for sale Means

Suzuki model codes look confusing until someone explains them once. DF is Suzuki’s four stroke prefix and 90 is the horsepower. The A marks the A generation of this engine. T means power trim and tilt. X is an extra long shaft, for a 25 inch transom. There is no series number on the end, which marks an earlier production code. We confirm the build details of the unit in stock with you.

What you do not see in the code matters too: there is no Z, so it is standard rotation, and there is no W, so the cowl is black. That applies to the Suzuki DF90ATX for sale as much as any motor.

What Is Inside the Suzuki DF90ATX for sale

The DF90A uses a 1.5 litre inline four with dual overhead cams and 16 valves. Multi-point sequential fuel injection feeds each cylinder on its own, and Lean Burn control trims the fuel at cruise.

Suzuki gave it a 2.59:1 gear ratio, which is low for a 90. That lets the motor turn a bigger prop, and a bigger prop moves heavier boats and pontoons with less fuss.

The timing chain is self-adjusting and runs in oil, so there is no cam belt to replace. Troll Mode is an option, letting you set trolling speed in small steps with a switch. If you are unsure, send us a photo of the transom and we will check the Suzuki DF90ATX for sale is the right fit.

Troll Mode

With the optional Suzuki Troll Mode System you can set trolling speed in small steps with a switch, without touching the throttle. Anglers who troll a lot love it.

Boats That Suit the Suzuki DF90ATX for sale

Pontoons

Pontoons from 18 to 22 feet rated for 90 HP.

Aluminium fishing boats

Deep V boats from 16 to 18 feet.

Bay boats and skiffs

Light inshore boats.

Family runabouts

Small bowriders and runabouts.

How the Suzuki DF90ATX for sale Feels on the Water

The Suzuki DF90ATX for sale is smooth and quiet at idle. Most people are surprised how little vibration comes through the boat.

It gets boats up on plane cleanly and cruises at a relaxed rpm. Many repeat customers come back for a second Suzuki DF90ATX for sale on another boat.

Single or Twin Installs

A motor in this size class is nearly always run as a single engine, and the Suzuki DF90ATX for sale is standard rotation, which is what a single engine boat needs. On a catamaran or a wide work boat some owners run two side by side. If that is your plan, tell us before ordering and we will help with the setup.

Colour and Finish

Black is the standard Suzuki finish and suits almost any boat. If you want a white cowl to match a white hull, ask us about the W version of this motor. The engine underneath is the same.

Rigging the Suzuki DF90ATX for sale

This is a remote model. You will need a control box with throttle and shift cables, a steering system rated for 90 HP, a key switch and harness, gauges, a good marine battery and a fuel system with a water separating filter.

Mount the motor so the anti-ventilation plate sits roughly level with the bottom of the hull, then fine tune after a test run. If the prop blows out in turns, drop it a hole. If there is a lot of spray and drag, raise it. The 12 V, 27 amp alternator keeps electronics charged on a normal day. The Suzuki DF90ATX for sale is covered here too.

Transom Height and Shaft Length

The 25 inch shaft suits most offshore boats and centre consoles. Measure from the top of the transom to the bottom of the hull at the centreline before you order. Around 25 inches means the X shaft is right. Boats on an outboard bracket or with a deep notch may need a different length, so measure carefully.

Suzuki DF90ATX for sale or a 115?

A 115 adds power and weight, about 60 pounds more. It makes sense on boats rated for 115 that carry heavy loads.

The Suzuki DF90ATX for sale is lighter, cheaper to run and plenty for most boats rated at 90.

Who Buys the Suzuki DF90ATX for sale From Us

Most of our buyers are owners who want a reliable motor and a fair price without dealer games. Next come fishing and charter operators repowering a working boat, and then boat builders and dealers who need stock to rig new hulls. The feedback after a season is nearly always the same: it starts every time, it is easy on fuel compared with what they had, and it has needed nothing beyond normal servicing.

Day to Day Ownership

Good outboards fade into the background. You stop thinking about the engine and think about the fishing or the family instead. The Suzuki DF90ATX for sale starts on the first turn, idles cleanly with no choke and does not foul plugs after a slow morning. Keep up with flushing and servicing and it will keep doing that for years.

Breaking In the Suzuki DF90ATX for sale

Follow the break-in in the owner’s manual. In short: vary the revs during the first hours, do not hold it at full throttle for long, and change the engine oil and filter at the first service. A motor broken in gently uses less oil and runs smoother for the rest of its life.

Give the gearcase its first oil change at that service too. It flushes out the fine metal from new gears bedding in. That is a big part of why people choose the Suzuki DF90ATX for sale.

Keeping the Suzuki DF90ATX for sale Healthy

Nothing about this motor needs special tools for routine care. Stick to a simple routine:

• After every trip: flush, rinse and check the tell-tale stream.
• Every month in use: look at the anodes, the prop and the fuel filter bowl.
• Every 100 hours or yearly: engine oil, oil filter, gear oil and a grease of every fitting.
• Every two years or so: water pump impeller and thermostat check.
• At the major service: plugs, fuel filter and a valve clearance check if the manual calls for it.

The timing chain runs in oil and does not need replacing like a belt. That is one less big bill to plan for.

Matching the Motor to the Boat

The right motor is the one your boat is rated for, carrying the load you normally carry. Check the capacity plate for maximum horsepower and engine weight, then think about how you use the boat. Heavy loads, rough water and long runs all favour running close to the maximum rating. Light boats and calm water give you more freedom. If the numbers do not line up with 90 HP, ask us and we will point you to a better match. Owners of the Suzuki DF90ATX for sale tell us the same thing again and again.

What It Costs to Run

Lean Burn makes the Suzuki DF90ATX for sale one of the more economical 90s. Real burn depends on your boat.

Servicing is not expensive either. Suzuki parts are widely stocked, and most routine jobs on the Suzuki DF90ATX for sale can be done by any decent marine mechanic or by a handy owner.

Keep the Fuel Clean

Most problems people blame on the engine start in the tank. Water, old fuel and dirt in the lines will make any motor run badly. Change the water separating filter every season, drain the bowl if you see water and use fresh fuel. In hot, humid places keep the tank as full as you can when the boat is parked, so there is less room for condensation.

Treat the fuel well and fuel injection rewards you with easy starts and smooth running. It is one of the reasons we keep the Suzuki DF90ATX for sale in stock.

Choosing a Propeller for the Suzuki DF90ATX for sale

The right prop lets the motor reach its full throttle range of 5,300 to 6,300 rpm with your normal load aboard. If it over revs, go up in pitch. If it cannot get into the range, come down. Suzuki lists a 13 to 23 inch pitch range for this motor.

Suzuki’s own props are a good match, and the Suzuki genuine parts and accessories range also covers filters, anodes and service kits. Or tell us your boat and load and we will suggest a starting prop.

Running Slow All Day

Anglers spend a lot of time at idle or just above it. A fuel injected four stroke handles that well. There is no smoke, no oil fouling and no hard restart after a long drift. Keep an eye on the battery if you run a lot of electronics at low revs, and give the motor a short run at higher revs on the way home to clear it out. You get all of that with the Suzuki DF90ATX for sale.

Instruments for the Suzuki DF90ATX for sale

Suzuki’s digital gauges read engine data straight from the motor, including fuel flow and service reminders. If you prefer, plain analogue tach and trim gauges work too. Whatever you fit, run tidy wiring with proper fuses. Good wiring now saves a lot of headaches later.

Batteries and Wiring

Use a marine starting battery with good cranking amps, keep the terminals clean and tight and fit a battery switch. If you run lots of electronics, a second house battery with a charging relay keeps the starting battery fresh. Corrosion on terminals and loose earth wires cause more no-start calls than anything inside the engine.

Looking After It in Salt Water

Fresh water flushing after every trip is the most important habit you can have. Use the flush port with a garden hose, rinse the outside and check the anodes regularly. On a mooring, keep the motor tilted up between trips so the gearcase is not sitting in the water. Ask us if you want photos of the Suzuki DF90ATX for sale before it ships.

Hot and Cold Climates

In hot climates, check the tell-tale stream often and keep the cooling passages clean. Warm, silty water is hard on impellers. In cold climates, fuel injection makes starting easy, but drain the motor and winterise it properly before a freeze.

Towing and Ramp Habits

Long road trips are harder on an outboard than most people think. Use a motor support bracket rather than resting the motor on the tilt ram, and check the bolts on the transom clamp or mounting after the first few trips. At the ramp, back in, lower the motor, start it in the water and watch for the tell-tale before you drive off the trailer. We are happy to answer questions about the Suzuki DF90ATX for sale by email or chat.

Back home, flush it while you wash the boat. Same routine every time and it becomes second nature.

Laying It Up

For short breaks, flush, drain and tilt up. For a long lay up, run stabilised fuel through the system, change the engine and gear oil, fog the engine if the manual calls for it, grease every fitting and keep the battery charged. A cover keeps sun and bird mess off the cowl. The Suzuki DF90ATX for sale handles this well.

Simple Fixes Before You Call a Mechanic

No crank: lanyard clipped on, lever in neutral, battery charged, terminals tight.

Hard starting: firm primer bulb, tank vent open, no water in the separator, fresh fuel. This is where the Suzuki DF90ATX for sale earns its keep.

Overheat alarm: stop, tilt up and look for a plastic bag or weed over the intake. Check the tell-tale stream when you restart.

Low top speed: check the prop for damage, check the mounting height and make sure the boat bottom is clean.

Rough running: old fuel and dirty filters cause most of it. Start there.

Carry These on Board

A spare kill cord, a spare prop with nut and washer, a fuel filter, a couple of spanners, a radio and a torch. Add a tow line and an anchor that holds. It sounds basic, but most bad days on the water start with something small.

Tips for a Repower

A repower is the best chance you will get to fix the things you cannot reach with a motor on the back. Check the transom, replace old fuel hoses and the primer bulb, clean or replace the tank pickup and fit a new water separating filter. Fresh fuel lines and clean fuel make a new motor happy from the first day.

Measure the transom height before ordering so the shaft length is right. It is the one mistake that is hard to fix later.

Two Stroke to Four Stroke: What Changes

If your old motor was a two stroke, a few things will feel new. You will stop buying two stroke oil. The motor will idle cleanly without smoke. Fuel bills drop, often a lot, especially at cruise. You will also notice the extra weight on the transom, so set the trim and mounting height carefully on the first runs.

Service changes too. Instead of plugs and oil injection checks, you will be changing engine oil and filters like a car. It is simple, and most owners prefer it.

Mistakes We See Buyers Make

The most common one is the wrong shaft length. Measure the transom before ordering, not after the crate arrives. The second is under-propping, which lets the motor over rev and wastes fuel. The third is skipping the rigging list, then finding out the old controls or harness do not fit the new motor. And the last is ignoring the boat’s capacity plate. A motor heavier or more powerful than the hull is rated for is a real safety problem.

The First Year of Ownership

Year one is easy. Follow the break-in, get the first service done on time and keep a log of hours. Look at the prop and anodes now and then, and flush after every salt trip. Before winter or a long break, do a proper lay up. If you do those simple things, the motor will reward you with years of trouble free running.

Shipping and Delivery

The Suzuki DF90ATX for sale ships in its factory crate on a pallet. We book freight to your nearest port or airport, or to your door where that is possible. You get a written delivery quote before paying for shipping, then tracking and copies of the export documents once the crate leaves. If you already use a freight forwarder, we can hand it to them.

Warranty Notes

The Suzuki DF90ATX for sale comes with Suzuki factory warranty paperwork. Terms depend on your region and on how the motor is registered and used, so ask us about warranty in your country before you order. Keep receipts and service records and follow the service schedule.

What Comes in the Crate

• DF90ATX powerhead, midsection and gearcase
• Owner’s manual and warranty paperwork
• Standard Suzuki fittings from the factory

Controls, gauges, harnesses, propeller and steering depend on what we have in stock and are not always included. Ask before you order and we will tell you exactly what ships with your motor.

A Short Checklist Before Buying

• Transom height measured and matched to the 25 inch shaft.
• Boat capacity plate checked for horsepower and weight.
• Rotation decided for twin or triple setups.
• Rigging list ready: controls, steering, harness, gauges, prop.
• Delivery address and nearest port sent to us.

Send us that list and we will come back with a full price to your door.

Buying the Suzuki DF90ATX for sale From Us

Every motor we sell is new and the price is on this page. Before we ship, we give you a delivery quote for your country so you know the full cost. When you order we confirm stock, the exact model code and shaft length with you. Our refund and return policy and terms and conditions are on the site. You can read what other buyers say on our reviews page, learn more about us page, or go straight to the contact page.

Other Suzuki Motors to Compare

• All 90 HP Suzuki outboards
• Suzuki DF90ATL2, 20 inch shaft
• Suzuki DF90ATLW2, 20 inch shaft, white
• Suzuki DF90ATX outboard motor (second listing)
• Suzuki DF90ATX2, 25 inch shaft
• Suzuki DF90ATXW2, 25 inch shaft, white
• Suzuki 70 HP outboards
• Suzuki 115 HP outboards
• All Suzuki outboards
• The full shop

Our blog has more on rigging and looking after outboards. Suzuki’s global site at globalsuzuki.com also shows the full worldwide marine line.

FAQ: Suzuki DF90ATX for sale

Is the Suzuki DF90ATX for sale new?

Yes. New, in the factory crate, with Suzuki paperwork.

What shaft length is the Suzuki DF90ATX for sale?

25 inch, the X shaft.

Is it standard or counter rotation?

Standard (right hand).

How heavy is the Suzuki DF90ATX for sale?

About 352 lb (160 kg).

What displacement is it?

1,502 cc (91.7 cu in), inline 4, dohc, 16 valves.

What controls does it use?

Mechanical cables.

What is the full throttle range?

5,300 to 6,300 rpm. Choose a prop that lands you in that range with a normal load.

Do you ship the Suzuki DF90ATX for sale to my country?

We ship worldwide. Send us your location and we will quote delivery.

Ready When You Are

The Suzuki DF90ATX for sale is in stock and ready to ship. If you are still deciding, send us your boat and how you use it. We would rather spend a few minutes getting it right than sell you the wrong motor.