SUZUKI 2.5 HP DF2.5S2 OUTBOARD MOTOR

Description

Looking for a light engine for a dinghy or inflatable? The Suzuki DF2.5S2 for sale is a new 2.5 horsepower four stroke outboard with a 15 inch short shaft, tiller control and rope start. It weighs about 29 lb, runs on plain petrol with a separate oil sump, and has its own built-in fuel tank. We hold it new in the carton, the price is on this page and we ship it worldwide.

Most buyers of this Suzuki DF2.5S2 for sale listing have a tender, a small inflatable or a car-top boat. You tell us where you live, we send a written delivery quote, and only then do you decide whether to pay. If you are not sure the short shaft suits your transom, send us a photo and the measurement. We would rather check than ship the wrong length.

This page is written for people who want to know how the motor lives with a small boat: what it pushes, how it carries, how to fit it, what to service and what goes wrong. The full specifications come first, then the practical side.

Suzuki DF2.5S2 for sale: Specifications

Production runs can differ in small ways, so treat the paperwork in the carton as final. You can compare it with the other small Suzukis on the official 2.5 to 30 HP outboard page.

Is 2.5 HP Enough for Your Boat?

This is the first question we ask any buyer, and it deserves a straight answer. A 2.5 HP motor moves a small, light boat at a steady pace. It is good for short crossings, moving between moorings and quiet fishing. It will not make a loaded boat plane, and it will not fight a strong tide for long.

Look at the maximum horsepower plate on your boat before you buy the Suzuki DF2.5S2 for sale. If the plate says 2 or 3 HP, the Suzuki DF2.5S2 for sale fits well. If your boat is rated for 5 or more and you carry three adults, move up to the Suzuki DF4AS2. Spending a little more on the right size is better than running a small motor flat out all day.

Decoding the Model Code of the Suzuki DF2.5S2 for sale

The letters are easy once you see them. DF is Suzuki’s four stroke line. 2.5 is the power. S is the 15 inch short shaft. The 2 at the end is the production series.

There is no E for electric start and no T for power tilt, so this is a pure manual motor. That is its strength. Nothing to charge, nothing to wire and very little to go wrong. For a 20 inch shaft, look at the Suzuki DF2.5L2.

Which Boats Take a Short Shaft?

Inflatable tenders

Small inflatables with a wooden or aluminium transom usually take a short shaft. The Suzuki DF2.5S2 for sale sits at the right depth, and it is light enough to lift onto the tube and clamp without a struggle.

Pram dinghies and small skiffs

A short transom on a pram is exactly what the S length is made for. The motor sits low enough to stay in the water when you step to the bow.

Car-top and cartop fishing boats

If you load the boat on a roof rack, every pound matters. At about 29 lb the Suzuki DF2.5S2 for sale is easy to carry down to the shore on its own.

Sailboat auxiliaries

Small cruisers use a bracket-mounted outboard on the stern rail. The short shaft works when the bracket is low and the sea state is calm. In rougher water a long shaft is the safer choice because the prop stays submerged as the stern lifts.

Measure Before You Order the Suzuki DF2.5S2 for sale

Measure from the top of the transom, at the centre where the clamp sits, straight down to the bottom of the hull. About 15 inches means a short shaft. About 20 inches means long. If the number is somewhere between, tell us, and also tell us how heavy the boat is and how many people sit aft. Most mistakes come from guessing.

After mounting, the anti-ventilation plate should sit level with the bottom of the hull, or very slightly above it. If the motor cavitates in a turn, lower it one notch. If it throws too much spray or drags, raise it a bit.

Fitting the Suzuki DF2.5S2 for sale to a Dinghy

Clamp the Suzuki DF2.5S2 for sale to the centre of the transom, tighten the screw handles evenly and test it for twist by rocking the tiller. A loose clamp is the number one reason small outboards fall in the water. Many owners add a safety line from the motor to a cleat on the boat. It costs almost nothing and can save the motor.

• Set the tilt pin so the shaft stands vertical when the boat is loaded.
• Fill the built-in tank with fresh unleaded petrol and close the vent when carrying.
• Clip the kill switch lanyard to yourself.
• Check the steering friction so the tiller does not flop around.
• Check the water outlet shows a steady stream after starting.

How It Starts and Runs

The Suzuki DF2.5S2 for sale has a compression reduction system, so the rope pull is lighter than many small engines. Set the choke when cold, give a few smooth pulls and it should fire. Warm up for a minute, then push the choke in and move off gently.

It is quiet for its size, and the exhaust leaves through the propeller area, which keeps noise down on the water. At low speed the tiller has little vibration. At full throttle the motor is working hard, so cruise below that if you can. We will not quote speeds or fuel burn, because they depend on the hull and load more than on the motor.

Break-In for the Suzuki DF2.5S2 for sale

Treat the first hours of the Suzuki DF2.5S2 for sale gently. Check the oil level, run at varied revs, avoid long full-throttle spells, and change the oil at the first service in the owner’s manual. Do not run the motor out of water, even briefly. Break-in is not complicated for a small single, but the habits you form in the first few trips last for years.

Servicing the Suzuki DF2.5S2 for sale Through the Year

• Flush with fresh water after salt or dirty water use.
• Change the engine oil at the first service, then yearly.
• Change the gear oil each season. Milky oil means a leaking seal.
• Replace the spark plug when worn or fouled.
• 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.

None of this needs special tools beyond a plug socket, a screwdriver and a funnel. Spares for the Suzuki DF2.5S2 for sale are cheap and easy to find, because Suzuki sells a lot of these small engines. Genuine parts are listed on the Suzuki genuine parts and accessories page.

Salt Water and Storage for the Suzuki DF2.5S2 for sale

The Suzuki DF2.5S2 for sale is rated for salt water and wears a multi-layer anti-corrosion finish, but it still needs your help. Rinse the outside and flush the cooling passages after each salt trip. Dry it and keep it out of the sun. A carburettor motor left with fuel in the bowl will gum up, so shut the fuel off and let it run until it stops before you store it.

Store the Suzuki DF2.5S2 for sale in the position shown in the manual, not just on whichever side is convenient. Oil can run into the cylinder if you lay it the wrong way. Cover it, keep it dry, and it will start first pull next season.

Common Problems on the Suzuki DF2.5S2 for sale

Will not start. Check fuel is fresh, the vent is open, the kill switch is in place and the plug is dry.

Runs rough. Often a dirty carburettor. Drain the bowl and replace the fuel.

Overheats. Check the water stream first, then the impeller.

Slow response. The prop may be damaged, or the boat is overloaded.

Smoke. Too much oil, or the motor was stored on the wrong side.

Carrying and Transporting the Suzuki DF2.5S2 for sale

The Suzuki DF2.5S2 for sale is made to be carried. There is a big handle on top, and the weight sits close to the middle, so it does not swing around in your hand. Suzuki lets you lay it down on the side shown in the manual, with the fuel closed, so it fits in a car boot or on a back seat without leaking. Put an old towel or a bag under it, because a little oil or water can still drip out.

For air travel, rules about fuel and engines vary by airline and country. Never take the motor on a plane with fuel in the tank. Drain it, let it dry out and ask the carrier what they need. The Suzuki DF2.5S2 for sale is a popular choice for yacht owners who fly out to a boat, but the paperwork needs checking first.

How the Suzuki DF2.5S2 for sale Compares With the 4 HP and 6 HP

Many buyers sit between sizes, so here is the plain version. The 2.5 is the lightest and cheapest, with the smallest engine and no real reverse gear. The 4 HP has a bigger 138 cc engine and a proper forward, neutral and reverse lever, at around 52 lb. The 6 HP adds more power again and is the first size that really suits a small aluminium boat with two adults.

If you do not need the extra power, the 2.5 is easier to live with. It is easier to lift, it is quieter and there is less to maintain. If you push your luck with weight, you pay in time, because a small motor runs flat out and wears sooner. Be honest about the load, then pick the 4 HP or the 6 HP if you need it.

Fuel and Oil for the Suzuki DF2.5S2 for sale

The Suzuki DF2.5S2 for sale is a four stroke, so use plain unleaded petrol in the tank and engine oil in the separate sump. Do not mix oil with the fuel. Choose the octane the manual lists, and use fresh petrol. Fuel that has sat for months is the main reason small outboards fail to start.

The oil is SAE 10W-30 or 10W-40. The sump is very small, about 0.3 litre, so a tiny amount of oil too many or too few matters. Check it on a level surface before each trip. If you see milky oil, stop using the motor and have it checked, because water is getting in somewhere.

Running Costs of the Suzuki DF2.5S2 for sale

We will not quote fuel figures, because every boat and every load is different. What we can say is that a small four stroke is economical to run, uses no oil mixed with fuel and needs only a few parts a year. A plug, an oil change, gear oil and the occasional impeller are the usual items. Most owners spend less on servicing the Suzuki DF2.5S2 for sale in a year than on their life jackets.

Keeping the Suzuki DF2.5S2 for sale Safe From Theft

Small outboards are easy to steal. Use a lockable clamp or a cable through the motor and a fixed point on the boat, and take the motor home when you can. At 29 lb it is easy to carry, which is part of the point. Note down the serial number and keep the invoice, because they help with insurance.

Hot and Cold Climates

In warm water, check the cooling stream often and keep the outlet clear. Silt and sand wear impellers fast. In cold weather the carburettor likes the choke, and the oil needs to be the right grade. Before a freeze, drain the fuel and the cooling passages so ice does not crack anything.

Warranty on the Suzuki DF2.5S2 for sale

The Suzuki DF2.5S2 for sale ships with Suzuki factory warranty paperwork. Terms depend on your region and on how the motor is registered, and leisure use is treated differently from commercial use. Keep your receipt and service records. Ask us about cover in your country before you order and we will tell you what applies.

What Comes in the Carton

• Suzuki DF2.5S2 powerhead, midsection and gearcase with the propeller fitted
• Owner’s manual and warranty paperwork
• Standard Suzuki fittings from the factory

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

Before You Order the Suzuki DF2.5S2 for sale

• Measure your transom to confirm a 15 inch shaft is right.
• Check the maximum rated horsepower and the transom load rating of the boat.
• Decide whether you can live without electric start and reverse gear.
• Think about storage and how you will carry it.
• 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. We answer questions about shaft length, weight, transport and shipping every day, and there is no charge for advice. Message us with your boat type and country and we will say honestly whether this motor is the right size.

Who Buys the Suzuki DF2.5S2 for sale From Us

Our buyers are tender owners, canoe and dinghy sailors, anglers who want a spare motor, lake cabin owners and boat builders fitting out small craft. Almost all of them tell us the same thing after a season. It starts easily, it is quiet and it does not ask for much. That is what you want from the Suzuki DF2.5S2 for sale.

It is also a very common motor in schools, sailing clubs and rescue boats, where small light engines get used hard by different people. In that setting the simple design is a real advantage, because there is little to break.

Mistakes First-Time Buyers Make With the Suzuki DF2.5S2 for sale

After years of selling small outboards, the same slips come up again and again. We list them so you can skip them.

• Ordering the wrong shaft length because nobody measured the transom.
• Expecting a 2.5 HP motor to plane a loaded boat.
• Leaving fuel in the tank and carburettor for the winter.
• Forgetting to flush after a salt water trip.
• Laying the motor down on the wrong side and flooding the cylinder with oil.
• Running it without water, even for a quick test on the bench.

Avoid those six and the Suzuki DF2.5S2 for sale will give you years of easy service.

Propeller and Trim on the Suzuki DF2.5S2 for sale

The propeller is a fixed three blade aluminium unit chosen for this engine and a typical light boat. You do not choose pitch the way you do on a bigger motor, so spend your effort on trim instead. Use the tilt pin positions to keep the shaft close to vertical when the boat is loaded. A motor tilted too far under pushes the bow down. Too far out lifts the bow and wastes thrust.

If you hit a stone or a log, check the prop for bent or chipped blades before the next run. Even a small bend causes vibration and can wear the gearcase seal. Genuine spares are available through us or through any Suzuki dealer.

Shipping and Delivery of the Suzuki DF2.5S2 for sale

The Suzuki DF2.5S2 for sale ships in its factory carton. We book freight to your nearest port or airport, or to your address where possible. Before you pay for shipping you receive a written quote, and once it is on its way you get tracking and the export documents. Small outboards ship without fuss and customs usually only need the invoice and the manual.

Buying the Suzuki DF2.5S2 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, and we handle the paperwork your country asks for. 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 about us, or go to the contact page to ask a question.

Other Suzuki Motors to Compare

• Suzuki DF2.5L2, long shaft
• Suzuki DF2.5L4, long shaft, later series
• Suzuki DF2.5S5, short shaft, later series
• Suzuki DF4AS2, 4 HP
• Suzuki DF6AS5, 6 HP short shaft
• Suzuki DF9.9BL2, 9.9 HP
• All 2.5 HP Suzuki outboards
• All Suzuki outboards
• The full shop

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

FAQ: Suzuki DF2.5S2 for sale

Is the Suzuki DF2.5S2 for sale new?

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

What shaft length is the Suzuki DF2.5S2 for sale?

15 inch, the S short shaft.

How heavy is the Suzuki DF2.5S2 for sale?

About 29 lb, or 13 kg.

Does the Suzuki DF2.5S2 for sale have a reverse gear?

No gear lever for reverse. You swing the motor round on its steering axis.

Does the Suzuki DF2.5S2 for sale come with a fuel tank?

Yes, a small tank is built into the cowl. Roughly one litre.

Do you ship the Suzuki DF2.5S2 for sale to my country?

We ship worldwide. Send us your location and we quote delivery before you pay.

Final Word

If you want a light, simple and reliable 2.5 HP for a tender or a dinghy, the Suzuki DF2.5S2 for sale does the job without drama. New, priced on the page and shipped worldwide. Order it today, or send us your transom measurement first and we will confirm it is the right fit.