SUZUKI 4 HP DF4AS2 OUTBOARD MOTOR

Description

The Suzuki DF4AS2 for sale is a new 4 horsepower four stroke outboard with a 15 inch short shaft, tiller steering, rope start and a real forward, neutral and reverse gear lever. It weighs about 52 lb, has its own built-in fuel tank and runs on a single 138 cc cylinder, the biggest displacement of any one cylinder outboard in this class. We hold it new in the carton, the price is on this page and we ship worldwide.

It is the motor we recommend when a 2.5 is too little and a 6 is too much. Small fishing boats, jon boats, inflatables and sailboat tenders all use it. Tell us where the boat is and we send a delivery quote before you pay, so you know the full cost first.

On this page you will find the full specifications, what the model code means, which boats suit the motor, how to rig and run it, a service plan and the questions we hear most often. We have tried to say what matters and skip what does not.

Suzuki DF4AS2 for sale: Specifications

Details can shift a little between production runs, so the paperwork in the carton has the last word. Suzuki shows its small outboards on the official 2.5 to 30 HP outboard page for side by side comparison.

What DF4AS2 Means on the Suzuki DF4AS2 for sale

DF is Suzuki’s four stroke prefix. 4 is the horsepower. The A tells you it is the current A generation of the small Suzuki engines. S is the 15 inch short shaft. The 2 at the end is the production series.

No E means no electric start, no T means no power tilt, no H because the tiller handle is built in. The same motor from a later production run is the Suzuki DF4AS5. If you need a smaller and lighter motor, the 2.5 HP Suzuki DF2.5S2 is the alternative.

Boats That Suit the Suzuki DF4AS2 for sale

Jon boats and small aluminium fishing boats

A 10 to 12 foot aluminium boat with a short transom is where many 4 HP motors end up. The Suzuki DF4AS2 for sale pushes one or two anglers and their gear at an easy pace, and trolls quietly on a lake.

Inflatable dinghies and tenders

An inflatable of around 8 to 10 feet takes this motor well. The extra power over a 2.5 helps when the boat carries three people or when you meet wind against tide. Check the transom rating of the inflatable, because the motor is heavier than the smaller one.

Sailboat tenders and small cruisers

A 4 HP can also work as a bracket-mounted auxiliary on a small cruiser in sheltered water. It will not drive a heavy keel boat against a gale, but for harbours, lakes and calm bays it is enough.

Canoes and car-top boats

Most canoe owners prefer the lighter 2.5 for the carrying weight. But if you paddle a big square stern canoe with a load, the 4 gives you extra thrust and a proper reverse.

Why the Suzuki DF4AS2 for sale Has a Real Gear Lever

The step from 2.5 to 4 HP brings a forward, neutral and reverse lever on the side of the motor. On a small boat, being able to reverse without swinging the tiller around matters when you dock in a tight space, or when you want to back away from a bank. The large lever is easy to use even with gloves on.

The motor also turns 90 degrees left and right on its tiller, which helps in tight turns. A throttle tension control holds your speed, and a steering friction control lets you set the tiller where you want it.

Measuring Your Transom for the Suzuki DF4AS2 for sale

Measure from the top of the transom, where the clamp sits, straight down to the bottom of the hull. Around 15 inches suits the short shaft. Around 20 inches needs a long shaft. If your number falls in between, send it to us with a photo of the stern and we will tell you which way to go.

Mount the motor so the anti-ventilation plate sits level with the hull bottom. If the prop breathes air in turns, lower the motor. If it drags and sprays, raise it a little. The Suzuki DF4AS2 for sale also has a shallow water drive position for crossing sandbars and weeds.

Rigging the Suzuki DF4AS2 for sale

• Clamp the motor on the centre of the transom and tighten both screw handles evenly.
• Fit a safety line from the motor to a strong point on the boat.
• Set the tilt pin so the shaft stands almost vertical when loaded.
• Fill the built-in tank with fresh unleaded petrol and check the oil level.
• Clip on the kill switch lanyard.
• Check the cooling jet after starting.

There is no battery to buy, but you can add the optional 12 V 5 A alternator if you want to charge a small battery for navigation lights.

Starting and Running the Suzuki DF4AS2 for sale

Open the fuel vent, set the choke and pull the rope of the Suzuki DF4AS2 for sale in one smooth motion. The digital ignition helps the motor fire quickly, even after a long layup. Warm it for a minute, push the choke in and select forward with the lever.

The motor is quiet for its size, with the exhaust below the water line, and there is a rubber mounting that cuts vibration through the tiller. Cruise below full throttle when you can. We do not quote speeds or fuel figures, because they depend so heavily on the boat and the load.

Break-In for the Suzuki DF4AS2 for sale

Check the oil and fuel, and make sure the Suzuki DF4AS2 for sale is in water before you start. For the first hours, vary the revs, avoid long runs at full throttle and change the oil at the first service in the manual. A gentle start helps the rings seat and keeps oil use low for years.

Servicing the Suzuki DF4AS2 for sale

• Flush with fresh water after salt or dirty water use.
• Change the engine oil at the first service, then each season. The sump holds about 0.7 litre.
• Change the gear oil each season. Milky oil means water is entering.
• Replace the spark plug when worn.
• Check valve clearance at the manual’s interval.
• Replace the water pump impeller every two or three seasons.
• Use fresh fuel and drain the carburettor before storage.

Parts for the Suzuki DF4AS2 for sale are easy to find, since Suzuki sells so many of these. Genuine plugs, oil filters and props are listed on the Suzuki genuine parts and accessories page.

Salt Water Care and Storage

The Suzuki DF4AS2 for sale is rated for salt water and has a multi-layer finish. Flush it after every salt trip, rinse the outside and let it dry. Suzuki designed the Suzuki DF4AS2 for sale to be stored on the port side, starboard side or front, with the fuel and oil sealed, so it travels well. Check the manual for the exact position and never lay it down any other way.

Common Problems on the Suzuki DF4AS2 for sale

Will not start. Check the fuel vent, the fresh fuel, the lanyard and the plug.

Starts and dies. A dirty carburettor or the choke. Drain the bowl and try again.

Overheating. Look at the water stream first. If it is weak, clear the outlet and check the impeller.

Vibration. Look for a bent blade or loose clamp.

Slow boat. The boat may be overloaded, weeds on the prop or the prop damaged.

The Suzuki DF4AS2 for sale Against the 2.5 HP and the 6 HP

Buyers often sit between three sizes, so here is how we explain it across the counter. The 2.5 HP is the lightest, cheapest and easiest to carry, but it has no reverse lever and a small engine. The 6 HP is stronger again and is the first size we suggest for a small aluminium boat with two adults. The 4 HP sits between them.

The Suzuki DF4AS2 for sale has a 138 cc engine, nearly double the 2.5, so it pulls harder at low speed and copes better with wind and chop. It also adds a gear lever. In return it weighs about 52 lb, roughly 23 lb more than the smaller motor, and it costs more. If you lift the motor in and out of a car every trip, think about that weight. If it stays on the boat, the extra power is easy to live with. For more power, see the Suzuki DF6AL2.

Fishing With the Suzuki DF4AS2 for sale

On a small lake or sheltered coast, the Suzuki DF4AS2 for sale gives an angler what he needs: a quiet idle for trolling, enough push to reach the far bank and a reverse lever to back off a snag. The throttle tension control lets you set the speed and take your hand off to handle a rod or a net.

Because the exhaust leaves below the water and the motor has an over-rev limiter, it stays quieter than many small outboards, which helps when fish are shy. Carry a spare plug and a small tool kit, and treat the clamp with care.

Weight, Carrying and Storage of the Suzuki DF4AS2 for sale

At 52 lb, most adults can lift the Suzuki DF4AS2 for sale using the large carrying handle, but it is a two-hand job. Bend your knees and keep the motor close to your body. A trolley or a second person helps with long walks from a car park to the shore.

Suzuki gives the motor three storage positions, port side, starboard side and front, so you can lay it in a car boot or a locker. Check the manual for the exact direction. Keep the fuel vent closed and put a mat under it. If you use the optional alternator, take care not to crush the lead.

Fuel and Oil for the Suzuki DF4AS2 for sale

The tank holds about a litre of petrol, which means short trips unless you carry a spare. Fill it with fresh unleaded petrol and choose the octane the manual lists. The oil lives in a separate sump that holds about 0.7 litre. Use SAE 10W-30 or 10W-40.

Check the oil on a level surface before each trip. If the oil looks black and thick, change it. If it looks milky, stop using the motor and find the cause, because water is getting in somewhere. Old petrol is the main cause of hard starting, so use fresh fuel and keep the tank closed.

Propeller and Trim on the Suzuki DF4AS2 for sale

The Suzuki DF4AS2 for sale comes with a three blade aluminium propeller sized for this engine and a typical light boat. Suzuki lists propellers with different pitches for this engine, and the right one depends on your load. If the motor will not reach the full throttle range of 4,000 to 5,000 rpm, the pitch may be too high or the boat overloaded. If it screams past the range, the pitch may be too low.

The five trim positions help you set the angle of the shaft. Put the pin in the hole that keeps the shaft near vertical when the boat is loaded. Too far in and the bow plows. Too far out and the bow lifts and the prop breathes air.

Safety Equipment for Small Boats

Wear a life jacket, clip on the lanyard and bring oars or a paddle. Carry a whistle, a small anchor, a bailer, a plug and a few tools. Check the weather. A 4 HP motor is capable, but small boats are easily upset by wind and waves. If you plan to use the Suzuki DF4AS2 for sale in open water, tell someone where you are going and when you plan to return.

Inflatables and Transom Ratings

If you plan to hang the Suzuki DF4AS2 for sale on an inflatable, check the transom rating. Many small inflatables are rated for 3 or 4 HP, some for more, and some for less. Do not exceed the plate. The motor weighs more than the 2.5, which also affects how the boat trims, so seat people forward to keep the bow down.

Theft, Security and Records

Small outboards like the Suzuki DF4AS2 for sale go missing often. Use a lockable clamp or a cable and, where you can, take the Suzuki DF4AS2 for sale home. Write down the serial number and keep the invoice, because both help with insurance and with warranty cover.

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 says, and drain the fuel and cooling passages before a freeze.

Warranty on the Suzuki DF4AS2 for sale

The Suzuki DF4AS2 for sale ships with Suzuki factory warranty paperwork. The term depends on your region and 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 DF4AS2 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 what ships with your motor.

Before You Order the Suzuki DF4AS2 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.

Who Buys the Suzuki DF4AS2 for sale From Us

Our customers include anglers with jon boats, owners of inflatable tenders, lake cabin owners, small boat builders and sailors who want a reliable auxiliary. They all tell us roughly the same after a season: the motor starts on the first or second pull, it is quiet enough, and the reverse lever is a real help. It asks for little beyond oil, a plug and fresh fuel. That is what you want from the Suzuki DF4AS2 for sale.

Doing the Oil and Gear Oil Change on the Suzuki DF4AS2 for sale

Warm the motor for a few minutes so the oil flows, then 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 level on the dipstick. The gear oil is separate. Open the drain and fill screws on the gearcase, let the old oil out and inspect it. Amber oil is healthy. Milky oil points to a leaking seal. Refill from the bottom until oil shows at the upper hole, then fit new washers.

Do these jobs every season even if the Suzuki DF4AS2 for sale has not done many hours. Oil ages with time as well as use.

Winter Layup for the Suzuki DF4AS2 for sale

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

Follow these steps and the Suzuki DF4AS2 for sale should start first or second pull in spring.

Shipping and Delivery of the Suzuki DF4AS2 for sale

The Suzuki DF4AS2 for sale ships in its factory carton. We book freight to your nearest port or airport, or to your door where we can. You get a written quote before you pay, and tracking and export documents after dispatch. A 52 lb carton is easy to move and to clear through customs.

Buying the Suzuki DF4AS2 for sale From Us

Every motor is new, and the price is shown 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 DF4AS5, same 4 HP, later series
• Suzuki DF2.5S2, 2.5 HP short shaft
• Suzuki DF2.5L2, 2.5 HP long shaft
• Suzuki DF6AL2, 6 HP long shaft
• Suzuki DF6ASW2, 6 HP white short shaft
• Suzuki DF9.9BL2, 9.9 HP
• All 4 HP Suzuki outboards
• All Suzuki outboards
• The full shop

Our blog covers rigging and care for small outboards. Suzuki’s global site at globalsuzuki.com shows the full worldwide marine line.

FAQ: Suzuki DF4AS2 for sale

Is the Suzuki DF4AS2 for sale new?

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

What shaft length is the Suzuki DF4AS2 for sale?

15 inch, the S short shaft.

How heavy is the Suzuki DF4AS2 for sale?

About 52 lb, or 24 kg.

Does the Suzuki DF4AS2 for sale have reverse?

Yes. It has a forward, neutral and reverse lever.

Does the Suzuki DF4AS2 for sale have electric start?

No. It is a rope start motor with a digital ignition for quick starting.

Do you ship the Suzuki DF4AS2 for sale to my country?

We ship worldwide. Send your location for a quote.

Final Word

If you want a simple, reliable 4 HP with a proper reverse gear for a small boat, the Suzuki DF4AS2 for sale is a sound 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.