SUZUKI 25 HP DF25AS2 OUTBOARD MOTOR

Description

This is the Suzuki DF25AS2 for sale: a new 25 HP pull start four stroke with a 15 inch short shaft and tiller steering. No battery, no wiring, no remote controls. Clamp it on, connect the fuel line, pull, and go. It sits in our warehouse in the sealed Suzuki crate, the price is on this page, and we ship it to buyers worldwide.

Of all the small Suzukis we sell, the Suzuki DF25AS2 for sale is the one we recommend most to people who want something simple. Fishermen on remote lakes, dinghy owners, small work boats, people who just do not want a battery to look after. It is the cheapest way into the three cylinder DF25A.

Who buys the Suzuki DF25AS2 for sale

Over the years we have shipped this motor to a pretty wide mix of customers. The common thread is that they want reliability with as few parts as possible. A typical Suzuki DF25AS2 for sale buyer has one of these boats:

• A 12 to 16 foot aluminium boat with a 15 inch transom.
• A rigid inflatable or a heavy inflatable with a solid floor.
• A yacht tender that needs a bit more than a 15 HP.
• A small flat bottom work boat or jon boat with a short transom.
• A canoe stern square back or small skiff rated for 25 HP.

If your boat sits on a mooring and you only run it a few times a month, a manual start motor is often smarter than electric. Batteries die when they sit. A Suzuki DF25AS2 for sale with battery-less EFI does not care how long it has been parked. Squeeze the bulb, pull, and it fires.

When it is the wrong choice

If you have a bad back or a bad shoulder, look at the electric start Suzuki DF25AES2 instead. A 25 HP pull start is not hard with Suzuki’s easier recoil, but it is still a pull. Also, if your transom is 20 inches, the Suzuki DF25AS2 for sale will sit too high. Look at a long shaft model.

Reading the Suzuki DF25AS2 for sale code

Every letter on a Suzuki model code means something. On the Suzuki DF25AS2 for sale it goes like this:

What is missing matters too. No E means no electric starter. No T means no power trim and tilt. No W means the regular dark finish rather than white. So the Suzuki DF25AS2 for sale is the most basic version of the DF25A, and that is exactly the point.

Suzuki DF25AS2 for sale: technical specifications

Here are the numbers. They come from Suzuki’s published data for the DF25A family. Dry weight leaves out the prop and engine oil.

Suzuki’s own overview of the DF25A and DF30A is on globalsuzuki.com if you want to cross check.

Why the Suzuki DF25AS2 for sale runs without a battery

This is the question we get most. Fuel injection normally needs electricity to run the pump, the injectors and the computer. Suzuki solved it with a system that powers itself from the flywheel once you pull the cord. A strong pull spins it enough to fire the injectors, and from then on the motor makes its own power.

In real life it means the Suzuki DF25AS2 for sale starts like a carb motor but runs like an EFI motor. No choke to fiddle with. Steady idle when cold. Better fuel economy. No carb to clean after a winter with old gas.

Starting technique

New owners sometimes yank too fast too early. Here is the routine we teach:

1. Open the tank vent and squeeze the primer bulb until it is firm.
2. Put the shift in neutral and attach the kill cord.
3. Set the throttle grip to the start position.
4. Pull the handle slowly until you feel it engage.
5. Then give one smooth, full pull.

A healthy Suzuki DF25AS2 for sale usually fires on the first or second pull. If it takes five or six, something is off. Usually it is fuel supply or a kill cord not clipped in.

Other features worth knowing about

Lean Burn Control

At steady cruise the computer leans the mixture. You will see it as more hours from a tank. On a long day of trolling, the Suzuki DF25AS2 for sale sips fuel compared with older carbureted 25s.

Three cylinders instead of two

Most 25s in this class are twins. Three cylinders give a smoother idle and less buzz through the tiller arm. Suzuki added an offset crankshaft and roller rocker arms to cut internal friction. We hear from customers that their hands are less tired after a full day.

Protection systems

There is a set of three LED indicators on the front. They warn of low oil pressure, overheating and over revving. The rev limiter steps in if the prop loses grip. The Suzuki DF25AS2 for sale will also slow itself to protect the engine if oil pressure drops.

Small touches

• Freshwater flush fitting on the motor, no muffs required.
• Shallow water drive setting for creeping over flats.
• Easy Start recoil system that needs less force than older starters.
• Carry handles built into the cowl and lower case.
• Suzuki anti-corrosion finish for salt use.

Charging and lights on a manual start motor

Out of the box, the Suzuki DF25AS2 for sale does not need any power source. If you want to charge a small battery for a fish finder or lights, a charging kit (rectifier and lead) gives you up to 12V 14A from the alternator. It is an option, not standard, on the manual start version. Tell us when ordering and we can quote it with the motor.

Some customers start with the bare motor and add the kit a year later. That works fine. The wiring is simple and any Suzuki dealer can fit it.

Mounting, carrying and storing a portable 25

At about 62 kg, the Suzuki DF25AS2 for sale is a two person lift. One person can do it, but we see a lot of dropped motors and sore backs that way. Use the grab handles on the cowl and the lower case, and keep the powerhead higher than the lower unit while you carry it so water does not run back into the exhaust.

To mount it, centre the bracket on the transom, tighten both clamp screws by hand until they bite, then a firm extra turn. Check them again after the first ten minutes of running. They loosen as the wood settles. For a boat that runs fast or in chop, put two through bolts in the bracket holes. A lost motor costs far more than two bolts.

Set the trim rod so the motor is roughly vertical when the boat is on plane with your usual load. If the bow ploughs, move the rod out one hole. If the bow bounces, move it in a hole. Small changes make a big difference on a light boat.

Laying it down

If you must lay the Suzuki DF25AS2 for sale down for transport, there is a correct side, marked in the owner’s manual. Lay it the wrong way and oil can run into places it should not, which means a smoky start or worse. When in doubt, keep it upright on a motor stand.

Winter storage

Before a long layup, run the motor with fuel stabiliser mixed into the tank for a few minutes so treated fuel reaches the fuel system. Flush it with fresh water, change the oil so acids from old oil do not sit in the engine, and change the gear oil. Fog the cylinders if the manual says to. Store it upright in a dry place, with the tank vent closed.

In spring, check the oil, squeeze the bulb, and pull. Most owners of the Suzuki DF25AS2 for sale tell us it fires straight away after the winter, which is a big change from the carb motors they had before.

Getting the shaft length right

The Suzuki DF25AS2 for sale is a 15 inch short shaft. Measure your transom before ordering:

• Measure from the top of the transom straight down to the bottom of the hull, at the centre.
• About 15 inches means short shaft (this model).
• About 20 inches means long shaft. See the Suzuki DF25ATHL2 or other L models.
• Once mounted, the anti-ventilation plate should sit level with the keel or up to an inch below.

A wrong shaft length shows up fast. Too short and the prop blows out in every turn. Too long and you drag the gearcase through the water and lose speed. Getting this right is cheaper than any prop change.

What to buy along with it

A big plus of the Suzuki DF25AS2 for sale is that the shopping list is short:

• Fresh unleaded fuel for the portable tank.
• Engine oil if your crate came dry (check the dipstick, every time).
• A spare kill cord clip.
• A spare prop and the right nut and pin for remote trips.
• Through bolts for the transom bracket if you run hard or in chop.
• An optional charging kit if you want to run electronics.

No battery, no switch panel, no control box. That is real money saved, especially if you are rigging a boat on a budget.

Prop selection

Target wide open throttle between 5,000 and 6,000 rpm with your normal load. Light inflatable with one person: a higher pitch. Loaded aluminium boat with two people and coolers: a lower pitch. Too much pitch and the Suzuki DF25AS2 for sale lugs. Too little and it hits the rev limiter.

Break-in for a new Suzuki DF25AS2 for sale

Treat the first 10 hours with some care. It makes a difference to oil use and long term compression.

• Hours 0 to 2: under half throttle most of the time. Short bursts to get on plane are OK.
• Hours 2 to 3: up to three quarter throttle, varying speed.
• Hours 3 to 10: full throttle allowed for a minute or two at a time.
• Throughout: change speed often, do not sit at one rpm.

After about 20 hours, do the first service. On the Suzuki DF25AS2 for sale it is mostly an oil and filter change plus a general check over.

Service intervals

Follow the owner’s manual first. As a quick guide, this is what we tell customers who buy the Suzuki DF25AS2 for sale:

Genuine filters, plugs and impellers are listed on Suzuki’s genuine parts page. We can pack a service kit in the crate if you ask.

Using it in salt water

Suzuki builds the DF25A for salt water use. The paint system and anodes are there for a reason. What makes the difference is the owner. For a Suzuki DF25AS2 for sale used in the sea:

1. Flush through the flush port with fresh water after every outing.
2. Wash the outside and the clamp bracket with fresh water.
3. Leave the motor tilted up when moored.
4. Look at the anodes every couple of months. Replace them at half size.
5. Spray the powerhead with a corrosion block product monthly.
6. Grease the swivel and tilt points so they do not seize.

Clamp screws on transom brackets corrode and stick if ignored. A bit of grease on the threads every few weeks keeps them turning.

Fuel tips that save trouble

Most small outboard faults start in the fuel tank, not the engine. A few habits keep the Suzuki DF25AS2 for sale happy:

• Buy fuel from a busy station so it is fresh.
• Avoid high ethanol blends. Regular unleaded with low ethanol content is best.
• Do not leave fuel in the portable tank for months. Use it or stabilise it.
• Keep the tank cap closed and the vent shut when stored, so water does not get in.
• Fit a water separating filter if your local fuel is poor quality.
• Check the primer bulb and hose for cracks every season.

Fuel injection is more tolerant than a carburettor, but injectors are small and do not like dirt or water. A clean tank and clean fuel are the cheapest maintenance you will ever do on a Suzuki DF25AS2 for sale.

How much fuel does it use?

That depends a lot on the boat, load and throttle. As a rough idea, at gentle cruise on a light aluminium boat many owners see well under 2 gallons (around 7 litres) per hour, and trolling uses very little. Wide open throttle burns more. Plan your range with a reserve, especially on big water.

Problems we see and how to fix them

Hard to start after storage

Almost always stale fuel or water in the fuel. Drain the tank, use fresh fuel, check the fuel filter. The EFI on the Suzuki DF25AS2 for sale handles cold starts well, but it cannot burn bad fuel.

Recoil rope will not retract

Usually the rope has jumped off the pulley or the spring is tired after years of use. It is a simple part to replace. Do not force it.

Weak water stream

Clear the telltale with a thin wire first. If still weak, check the water intake grilles on the gearcase for weed or plastic. Then suspect the impeller.

Motor revs but boat goes slow

Could be a spun prop hub, wrong trim pin position, or a prop with too little pitch. Check rpm against the 5,000 to 6,000 window.

Motor stops when you shift into gear

Idle may be set low after a long storage, or there is fuel starvation. Make sure the tank vent is open and the primer bulb stays firm.

Suzuki DF25AS2 for sale vs other small Suzukis

We stock the full lineup, so we can be honest about where the Suzuki DF25AS2 for sale fits:

• Suzuki DF20AS2: 20 HP, two cylinder, lighter. Cheaper, fine for lighter boats.
• Suzuki DF25AES2: same motor with electric start and battery charging as standard.
• Suzuki DF25ATHS2: short shaft tiller with electric start plus power trim and tilt.
• Suzuki DF25AS5: the 5 series version of this same configuration.
• Suzuki DF30ATHL2: the 30 HP long shaft with power tilt, for boats rated higher.

The DF20AS2 weighs a bit less, but on a loaded boat the extra cylinder and displacement of the Suzuki DF25AS2 for sale are easy to feel. If your boat is rated for 25, the price difference is small for the extra power. See the full Suzuki 25 HP collection for every variant.

Ordering the Suzuki DF25AS2 for sale from our shop

We sell new outboards and ship them worldwide. The Suzuki DF25AS2 for sale here is not a demo, not a return, not a rebuilt unit. It is a new motor in its factory crate.

How buying works

1. Use the contact form to tell us the model and your delivery address or nearest port.
2. We send you a delivery quote and an estimated time. Nothing is charged yet.
3. You approve and pay. We prepare the paperwork.
4. The motor ships and you get tracking.

The motor price for the Suzuki DF25AS2 for sale is the price shown on this page. Freight is quoted on top because it changes so much by destination and method. Courier, air cargo and sea freight are all possible. Customs duty and import taxes are normally paid by the buyer at the destination, and we tell you everything we know beforehand.

Warranty

Each motor carries the Suzuki factory limited warranty. The length depends on your region and whether the motor is for leisure or commercial use. Many regions give three years for recreational owners. We confirm which terms apply before you buy, not after.

Our return and refund policy and our terms and conditions explain the rest in plain words.

Inside the crate

A Suzuki DF25AS2 for sale normally arrives with the following. Contents can vary a little by market and batch, so ask us if a specific item matters to you.

• The DF25AS2 outboard with tiller handle and recoil starter
• Propeller in a standard pitch
• Portable fuel tank and fuel hose with primer bulb, depending on batch
• Tool kit and spare parts bag
• Owner’s manual and warranty card

Quick checklist before you order

• Your transom is about 15 inches.
• Your capacity plate allows at least 25 HP.
• You are happy to pull start.
• You do not need power tilt.
• You know if you want the optional charging kit.
• You have a delivery address ready.

All yes? Then the Suzuki DF25AS2 for sale is probably the right motor. Any no? Message us and we will help you pick.

FAQ about the Suzuki DF25AS2 for sale

Does the Suzuki DF25AS2 for sale need a battery?

No. The EFI powers itself once you pull the cord. You only need a battery if you add the charging kit and want electronics.

How hard is it to pull start?

Easier than most 25s. Suzuki’s Easy Start recoil reduces the effort. Most adults have no trouble.

Can I convert it to electric start later?

It is possible in theory but expensive and not worth it. If you might want electric start, buy the DF25AES2 from day one.

Can I use it in salt water?

Yes. Flush it with fresh water after every trip and watch the anodes.

Is the Suzuki DF25AS2 for sale shipped worldwide?

Yes. We ship worldwide and quote the delivery before payment.

How heavy is it?

About 62 kg (137 lb) dry. Two people can carry it with the built in handles.

Where can I compare other Suzuki models?

On our Suzuki outboards page and in our shop. Suzuki also lists the range on the Suzuki Marine outboard lineup.

Get your Suzuki DF25AS2 for sale

Simple motor, simple process. Send your address, get the shipping quote, pay, and the crate is on its way. You can learn more about us, read what earlier buyers wrote on the reviews page, or check our blog for care guides. The Suzuki DF25AS2 for sale is ready to ship.