Suzuki 4 HP DF4AS5 Outboard Motor

Description

Our Suzuki DF4AS5 for sale listing is for a new 4 horsepower four stroke outboard from Suzuki’s A series, with a 15 inch short shaft, tiller control, rope start and a full forward, neutral and reverse lever. It weighs about 52 lb and has its own built-in fuel tank. The price is shown on this page, the motor is boxed and brand new, and we ship it to buyers all over the world.

We built this page around the things owners actually ask us once the motor is on the boat: what to check on the first day, how often to service it, what the common faults are and how to avoid them. If you only want the numbers, they are in the table. If you want to know how it lives day to day, keep reading.

Suzuki DF4AS5 for sale: Specifications

Production runs can vary slightly, so the paperwork in the carton is final. For a comparison across the small Suzuki range, see the official 2.5 to 30 HP outboard page.

Questions Buyers Ask Before Ordering the Suzuki DF4AS5 for sale

Is it really new?

Yes. Every motor we sell is new, in the carton, with the manual and warranty papers.

Will it fit my boat?

Measure the transom from the clamp edge to the hull bottom. About 15 inches suits this short shaft. Tell us the figure if you are unsure.

Is there a reverse?

Yes, a proper lever on the side of the motor.

Can I get it to my country?

We ship worldwide and quote delivery before you pay.

Reading the Model Code on the Suzuki DF4AS5 for sale

DF is the four stroke prefix. 4 is the power. A marks the A series of Suzuki’s small engines. S stands for the 15 inch short shaft. The 5 at the end is the production series. The earlier run of the same model is the Suzuki DF4AS2, and the smaller option is the Suzuki DF2.5S5.

Because there is no E, there is no electric start. Because there is no T, there is no power tilt. The motor stays light and simple, and there is very little electrical equipment to fail.

What You Get Over a 2.5 HP

The step up from 2.5 to 4 HP is bigger than the numbers suggest. The engine grows from 68 cc to 138 cc. You get a proper gear lever with reverse, an oil sump you can top up, and a stronger pull at low speed. The motor weighs about 52 lb against 29 lb, and it costs more, so the choice depends on the boat you own.

For a small tender that you carry up a beach, the 2.5 is easier. For a jon boat or a heavier inflatable, the Suzuki DF4AS5 for sale is much more capable. For more power than this, look at the Suzuki DF6AS5.

Day One With the Suzuki DF4AS5 for sale

1. Check the oil level on the dipstick, on a level surface.
2. Fill the tank with fresh unleaded petrol.
3. Clamp the motor on the centre of the transom and tighten both screws.
4. Fit a safety line.
5. Put the motor in the water. Never start it dry.
6. Open the vent, choke if cold, and pull the rope smoothly.
7. Check that cooling water leaves the outlet.
8. Test forward, neutral and reverse before leaving the dock.

Take the first trip easy and stay close to the bank. If anything feels wrong, you are close to home.

Break-In for the Suzuki DF4AS5 for sale

Run the Suzuki DF4AS5 for sale gently for the first hours. Vary the revs, avoid long runs at full throttle and change the oil at the first service. This helps the piston rings bed in and keeps oil consumption low for years. Do not rush it, and do not let the motor idle for long periods when new.

The Maintenance Plan for the Suzuki DF4AS5 for sale

• After every salt water trip: flush with fresh water and rinse the cowl.
• First service: change the engine oil and check all bolts.
• Every season: change engine oil, change gear oil, replace the plug and inspect the propeller.
• Every two or three seasons: replace the water pump impeller.
• At the manual’s interval: check and adjust valve clearance.
• Before storage: use fresh fuel or drain the carburettor.

None of it is difficult. Genuine parts are listed on the Suzuki genuine parts and accessories page, and we can supply them with the motor.

Troubleshooting the Suzuki DF4AS5 for sale

Will not start. Open the vent, check the petrol is fresh, make sure the lanyard is in place and the plug is dry. Most starting trouble comes from old fuel.

Starts then dies. Usually a dirty carburettor jet or the wrong choke setting. Drain the bowl and try fresh fuel.

No reverse or hard shift. Check the lever linkage is not bent and the motor is idling low enough when you shift.

Overheating. A weak cooling jet means a blocked outlet or a worn impeller.

Vibration. Check the propeller for damage and the clamp for looseness.

Blue smoke. Too much oil, or the motor was laid on the wrong side.

Boats That Suit the Suzuki DF4AS5 for sale

Aluminium fishing boats and jon boats

A 10 to 12 foot aluminium boat on a lake or river is the classic home for a 4 HP. The Suzuki DF4AS5 for sale moves one or two people and their gear at an easy pace, and idles quietly for trolling. It is also light enough to leave on the boat or lift off for storage.

Inflatable tenders

On a yacht tender or a rigid inflatable of around 8 to 10 feet, the Suzuki DF4AS5 for sale gives enough push for three people. Check the transom rating of the inflatable first, and remember that the motor weighs more than a 2.5.

Small sailboat auxiliaries

Mounted on a bracket, the Suzuki DF4AS5 for sale can move a small sailboat in a calm harbour. Keep the bracket strong, keep the shaft deep enough that the prop does not lift out in a swell, and do not expect it to fight a gale.

Work and utility boats

Small farm, hunting and survey boats use this size of motor for short, regular trips. The simple rope start and carburettor make it easy to keep going in places where service is far away.

Fitting the Suzuki DF4AS5 for sale to the Transom

Put the clamp of the Suzuki DF4AS5 for sale on the middle of the transom and tighten the two screw handles evenly. Test it by rocking the tiller. If the motor twists or clicks, tighten more. Add a safety line from the motor to a cleat on the boat, because a clamp that works loose is the commonest reason a motor ends up on the bottom of a lake.

Set the tilt pin so that the shaft stands almost vertical when the boat is loaded. The anti-ventilation plate should sit about level with the hull bottom. Lower the motor if the prop sucks air in turns, and raise it if the boat drags and sprays. The Suzuki DF4AS5 for sale has a shallow water drive setting, which lifts the lower unit slightly for crossing weed and sand.

How the Suzuki DF4AS5 for sale Runs on the Water

The Suzuki DF4AS5 for sale starts easily on a warm engine and needs a little choke when cold. Once warm, it idles steadily and picks up smoothly when you twist the throttle. The gear lever on the side clicks positively into forward, neutral and reverse. The tiller handle folds down for storage and for carrying.

Vibration through the tiller is low, because the motor sits on rubber mounts and the engine has an offset crankshaft. Noise is moderate for a single cylinder. At full throttle it is working hard, so cruise below that when you can. We do not quote speeds or fuel use, because they depend on your boat and load.

Fuel and Oil for the Suzuki DF4AS5 for sale

The tank on the Suzuki DF4AS5 for sale holds about one litre, so carry a small spare container on longer trips. Use fresh unleaded petrol at the octane the manual specifies. The engine oil lives in a separate sump that holds about 0.7 litre. Use SAE 10W-30 or 10W-40.

Check the oil before every trip. The dipstick is on the side of the motor and reads correctly only on level ground. If the oil is black, change it. If it is milky, stop and have the motor checked. Old petrol causes more trouble than any other thing on this size of motor, so buy small amounts and use them.

Propeller and Trim on the Suzuki DF4AS5 for sale

The Suzuki DF4AS5 for sale ships with a three blade aluminium propeller. The right pitch depends on the boat and the load. If the motor cannot reach the 4,000 to 5,000 rpm range at full throttle with your usual load, the pitch is too high or the boat is too heavy. If it passes the range easily, a bit more pitch may suit. Ask us if you want advice for your boat.

After any hit on a rock or log, look at the propeller. Chipped or bent blades cause vibration, and vibration wears the gearcase seal. A new genuine propeller costs far less than a gearcase repair.

Changing the Oil on the Suzuki DF4AS5 for sale

Warm the Suzuki DF4AS5 for sale for a few minutes and stand it upright over a tray. Drain the old oil, refill with about 0.7 litre of fresh SAE 10W-30 or 10W-40 and check the dipstick. Do not overfill. Dispose of the old oil properly at a recycling point. Do this at the first service and then every season, even if the Suzuki DF4AS5 for sale has not done many hours.

Gear Oil and Impeller on the Suzuki DF4AS5 for sale

The gearcase of the Suzuki DF4AS5 for sale holds a small amount of gear oil. Open the drain and fill screws, let the old oil out and look at it. Amber is healthy. Milky means a leaking seal. Refill from the bottom until it shows at the upper hole, and fit new washers.

The water pump impeller wears quietly. It sits in the lower unit, and replacing it means removing the gearcase. If you are not comfortable doing that, a dealer can do it in under an hour. Plan to replace it every two or three seasons, or sooner in sandy water.

Spark Plug and Carburettor Care

On the Suzuki DF4AS5 for sale, pull the plug cap and unscrew the plug with the right socket. A light brown tip is healthy. A wet black tip points to a rich mixture or old fuel. A white tip suggests a lean mixture. Replace it with the correct plug and gap, and tighten snugly.

If the motor has been stored with fuel in it, the carburettor bowl may have varnish. Drain the bowl with the small screw at the bottom, and use fresh petrol. If starting is still poor, have the jets cleaned. Small carburettors are cheap to service and easy to clean when you know how.

Salt Water Care for the Suzuki DF4AS5 for sale

The Suzuki DF4AS5 for sale is rated for salt water and wears a multi-layer anti-corrosion finish, but salt is patient. After each trip in salt water, run fresh water through the cooling passages with a flushing adaptor, rinse the cowl and wipe it dry. A thin spray of corrosion inhibitor on bolts and the tilt pin helps. If the boat lives on a mooring, tilt the Suzuki DF4AS5 for sale out of the water between trips.

Winter Layup for the Suzuki DF4AS5 for sale

1. Flush with fresh water and let it drain.
2. Run the carburettor dry or add stabiliser to the fuel and run it for a few minutes.
3. Change the engine oil while the motor is warm.
4. Remove the plug, add a few drops of oil to the cylinder and turn the motor over by hand.
5. Grease the clamp screws and the tilt pin.
6. Store it dry, covered and in a position the manual allows.

Suzuki allows three storage positions, port side, starboard side and front, with the fuel and oil sealed. Use one of those and never lay the motor on any other side.

Carrying and Transporting the Suzuki DF4AS5 for sale

At about 52 lb, the Suzuki DF4AS5 for sale is a two hand lift. Use the large carrying handle, bend your knees and keep the motor close to your body. A small trolley saves your back on long walks. In a car, lay it as the manual shows, close the fuel vent and put a mat or tarpaulin under it in case of drips.

Accessories Worth Adding

Some small extras make life easier. A lockable clamp or cable protects against theft. A flushing adaptor makes rinsing simple. A spare propeller means a rock does not end your day. A small remote fuel container lets you run longer than the built-in tank allows, though you should check the manual and fit it safely. If you want to charge a small battery for navigation lights, ask us about the optional 12 V 5 A alternator.

Safety Gear for Small Boats

Wear a life jacket, clip on the lanyard and carry oars or a paddle. Take a whistle, a small anchor, a bailer, a spare plug and a basic tool kit. Check the forecast. The Suzuki DF4AS5 for sale is a capable little motor, but small boats are easily upset by wind and waves, so keep close to shore and tell someone where you are going.

Security and Records

Small outboards go missing often. Lock the Suzuki DF4AS5 for sale on the boat, or take it home. Write down the serial number and keep the invoice, because both help with insurance and with warranty. A small notebook kept with the boat for each service is enough, and a motor with a clear history sells for more later.

Hot and Cold Climates

In warm and silty water, check the cooling jet often and replace the impeller more often. In cold weather, use the choke as the manual describes. Before a freeze, drain the fuel and cooling passages so ice does not crack anything.

Warranty on the Suzuki DF4AS5 for sale

The Suzuki DF4AS5 for sale ships with Suzuki factory warranty paperwork. The term depends on your region and on the production series, and leisure use is treated differently from commercial use. Keep your receipt and service records, and ask us about cover in your country before you order.

What Comes in the Carton

• Suzuki DF4AS5 powerhead, midsection and gearcase with the propeller fitted
• Owner’s manual and warranty paperwork
• Standard Suzuki fittings from the factory

Fuel, oil, bracket and the optional alternator are not included. Ask before you order and we will tell you exactly what ships with your motor.

Before You Order the Suzuki DF4AS5 for sale

• Measure the transom to confirm that a 15 inch shaft is right.
• Check the boat’s maximum horsepower and the transom load rating.
• Decide how you will lift and store a 52 lb motor.
• Decide if you need the optional alternator.
• Tell us your country so we can quote shipping.

If anything is unclear, ask. A few minutes of questions now saves trouble when the carton arrives.

Why Owners Stay With the Suzuki DF4AS5 for sale

Buyers come to us for the price shown up front and the delivery quote before payment. They stay with the Suzuki DF4AS5 for sale because it does what a small outboard should. It starts, it reverses, it idles quietly and it asks for little. Parts are easy to find in nearly every country, and a clean, serviced motor holds its value well when it is time to sell.

If you cannot find your answer on this page, send a message with your boat type and country. We will tell you if the Suzuki DF4AS5 for sale is the right motor, or suggest a different Suzuki.

Shipping and Delivery of the Suzuki DF4AS5 for sale

The Suzuki DF4AS5 for sale ships in its factory carton. We book freight to the nearest port or airport, or to your door where we can. A written quote comes before you pay, and tracking and export documents follow dispatch. At 52 lb the carton is easy to handle and simple to clear through customs.

Buying the Suzuki DF4AS5 for sale From Us

Every motor is new, and the price appears on this page. We tell you the full delivery cost before you pay. Our refund and return policy and terms and conditions are on the site. Read what other buyers say on the reviews page, learn about us or go to the contact page to ask a question.

Other Suzuki Motors to Compare

• Suzuki DF4AS2, same 4 HP, earlier series
• Suzuki DF2.5S5, 2.5 HP short shaft
• Suzuki DF2.5L4, 2.5 HP long shaft
• Suzuki DF6AS5, 6 HP short shaft
• Suzuki DF6AL5, 6 HP long shaft
• Suzuki DF9.9BS5, 9.9 HP
• All 4 HP Suzuki outboards
• All Suzuki outboards
• The full shop

Our blog has more on caring for outboards. Suzuki’s global site at globalsuzuki.com shows the worldwide marine line.

FAQ: Suzuki DF4AS5 for sale

Is the Suzuki DF4AS5 for sale new?

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

What shaft length is the Suzuki DF4AS5 for sale?

15 inch, the S short shaft.

How heavy is the Suzuki DF4AS5 for sale?

About 52 lb, or 24 kg.

Does the Suzuki DF4AS5 for sale have reverse?

Yes, with a forward, neutral and reverse lever.

Do you ship the Suzuki DF4AS5 for sale to my country?

We ship worldwide. Send your location for a quote before you pay.

Final Word

If you want a straightforward, reliable 4 HP with real reverse gear, the Suzuki DF4AS5 for sale is an easy choice. New, priced on the page and shipped worldwide. Order it today, or send us your boat details first and we will confirm it is the right fit.