Suzuki 25 HP DF25AS5 Outboard Motor

Description

The Suzuki DF25AS5 for sale on this page is the simplest 25 horsepower motor Suzuki makes: rope start, tiller steering, manual tilt and a 15 inch short shaft. It is new, it comes in the factory crate, the price is right there on the page, and we ship it worldwide.

No battery, no wiring, no power tilt pump. If you want a light three cylinder four stroke that starts on a pull and keeps going, the Suzuki DF25AS5 for sale is the one we point people to.

Why People Pick the Suzuki DF25AS5 for Sale

Every week someone asks us whether they really need electric start on a 25. Often the honest answer is no. The Suzuki DF25AS5 for sale uses battery-less fuel injection, so it does not need a battery to run. A short pull with the choke-free EFI gets it going cold or warm.

That keeps the boat simple. You skip the battery, the cables, the box and the charging worries. On a small tender or an aluminium skiff that lives on a trailer, fewer parts means fewer things to go wrong.

It is also the lightest version of the DF25A. Suzuki lists it at about 62 kg, which works out to roughly 136 lb. Two people can lift the Suzuki DF25AS5 for sale onto a transom without a hoist, and one fit person can carry it to a car on a cart.

Reading the Code: Suzuki DF25AS5 for Sale Decoded

• DF means a Suzuki four stroke.
• 25 is the horsepower rating, 25 HP or 18.4 kW.
• A marks the newer three cylinder EFI design that replaced the old carbureted DF25.
• S is the short shaft, 15 inches.
• 5 is the later production run of this same model.

What is missing matters too. There is no E, so the Suzuki DF25AS5 for sale has no electric starter. There is no T, so tilt is by hand. No W, so it is the standard dark colour. No R, so it is a tiller motor, not a remote steer one.

Suzuki DF25AS5 for Sale Specification Table

The powerhead on the Suzuki DF25AS5 for sale is identical to the electric start and power tilt models. Only the starter, tilt and shaft hardware differ. Service parts for the engine are shared across the family.

The Boats This Motor Suits

Check your boat’s capacity plate first. If it allows 25 HP and the transom is about 15 inches tall, you are in the right place.

Good matches

• 12 to 14 foot aluminium boats with a short transom
• Inflatables and RIBs around 3.5 to 4.3 metres rated for 25 HP
• Small dinghies and tenders where weight on the stern matters
• Duck boats and small work punts used in shallow water
• Rental fleets that want fewer electrical parts to fail

Not a good match

• Any boat with a 20 inch transom. You need a long shaft model.
• Boats with a console and wheel. Look at a remote model.
• Owners who cannot pull start comfortably. Electric start is the better buy.

If you are on the fence, send us the boat make, length and a photo of the transom. We will tell you straight whether the Suzuki DF25AS5 for sale fits.

Engineering Behind the Suzuki DF25AS5 for Sale

EFI that needs no battery

Older 25s used a carburettor. Leave fuel in a carb for a season and you are cleaning jets in spring. The Suzuki DF25AS5 for sale meters fuel through an injector, controlled by a small ECU that wakes up as the flywheel spins. The result is easy starting and clean running from cold.

Lightweight recoil

Suzuki redesigned the recoil starter for the A series so it needs less pull force. Three small cylinders compress less per stroke than a big twin, which also helps. Most people get it running in one or two pulls once it has been primed.

Lean Burn

The ECU reads engine conditions and runs a leaner mixture at steady cruise. Suzuki claimed up to 15 percent better economy than the older carbureted DF25. On the Suzuki DF25AS5 for sale that means more hours per tank on a long day out.

Low friction internals

Roller rocker arms and an offset crankshaft cut friction inside the engine. You feel that as smooth running and low vibration through the tiller, and it helps economy as well.

Flush port

A hose connector on the lower cowl lets you flush the cooling system without ear muffs. Use it after every trip in salt or muddy water.

What to Buy Alongside Your Suzuki DF25AS5 for Sale

A rope start tiller motor is about as cheap to rig as outboards get. Here is the short list.

• Through bolts for the transom bracket. Strongly recommended on a 25 HP.
• Transom pad or plate if your transom wood is soft or thin.
• Spare prop and nut kit if you run in rocky or shallow water.
• Fuel stabiliser for storage.
• Outboard cover to keep sun and rain off the cowl.
• Motor support for trailering, so the transom does not take every bump.

You do not need a battery, gauges, cables or a control box with the Suzuki DF25AS5 for sale. The tiller has throttle, shift and stop switch built in.

Want lights or a fish finder?

Manual start DF25A models can take an optional charging coil kit. With it, the Suzuki DF25AS5 for sale can top up a small battery for nav lights or electronics. Ask us when you order and we can quote the kit with the motor.

Prop pitch

Target 5,000 to 6,000 rpm at full throttle with a normal load. On light boats the stock 11 inch pitch usually lands there. Heavy loads or inflatables often run better on a lower pitch. Drop one size if it struggles to reach 5,000.

Measuring the Transom for a Suzuki DF25AS5 for Sale

1. Find the centre of the transom.
2. Measure from the top edge straight down to the bottom of the hull. On a V hull, extend a straight edge from the keel and measure to it.
3. About 15 inches means short shaft, so the Suzuki DF25AS5 for sale is correct.
4. About 20 inches means long shaft. Pick an L model.

When mounted, the cavitation plate should line up with the bottom of the hull or sit slightly below. Too high and the prop will ventilate. Too low and you add drag and spray.

Breaking In the Suzuki DF25AS5 for Sale

Run the first 10 hours gently. It sets the piston rings and protects the bearings.

• First 15 minutes: idle and low speed only.
• Up to 1 hour: below half throttle, keep changing rpm.
• Up to 2 hours: up to three quarter throttle, with brief full throttle runs.
• 2 to 10 hours: normal use, but avoid holding full throttle for long.

Do the first oil and gear oil change at 20 hours or one month. A lot of the motors that come back to dealers with problems missed this step.

Service Intervals

Genuine parts keep the Suzuki DF25AS5 for sale running the way it left the factory. Browse the official Suzuki genuine parts range or ask us to bundle a first service kit with your order.

Looking After It in Salt Water

The Suzuki DF25AS5 for sale is rated for salt water, and plenty of our buyers run it daily around reefs and harbours. A few habits make a big difference.

• Flush with fresh water for at least 10 minutes after every salt trip.
• Tilt it up when moored.
• Wash off the bracket and clamp screws and spray them with an anti corrosion product.
• Leave anodes bare. Replace them when they are half eaten.
• Pull the cowl a few times a season and check for salt crust.

Quick Fixes for Common Problems

Pulls over but will not fire

Check the kill cord clip is in place. Then squeeze the primer bulb until it is firm and make sure the tank vent is open. Those three cover most no-start calls we get about the Suzuki DF25AS5 for sale.

Rope is hard to pull

Make sure the motor is in neutral. The DF25A has start in gear protection, so the recoil locks if you are in forward or reverse.

Weak water stream

Clear the tell-tale outlet with a thin wire. If it stays weak, the impeller may be worn.

Motor tilts up in reverse

Set the tilt lock to the run position before backing up.

Rough idle after storage

Stale fuel. Drain it, refill fresh, run it for a few minutes.

Suzuki DF25AS5 for Sale Against the Other 25s

• Suzuki DF25AES5 adds electric start on the same short shaft manual tilt package. Worth it if you start and stop all day.
• Suzuki DF25ATHS5 adds electric start plus power trim and tilt.
• Suzuki DF25ATHL5 is the long shaft power tilt tiller version.
• Suzuki DF20AS5 is the same rope start layout at 20 HP for boats rated lower.
• Suzuki DF15AS5 is a lighter twin for small tenders.
• Suzuki DF25AS2 is the earlier production listing of the same rope start 25.

See all of them in our 25 HP Suzuki section or the full Suzuki outboards category. Suzuki’s own summary of the DF25A and DF30A is on the Global Suzuki marine site.

How Buying the Suzuki DF25AS5 for Sale Works

Step 1: Get a quote

Add the motor to your cart or contact us with your address or nearest port. We send a written delivery quote before you pay. Nothing is charged until you agree to the total.

Step 2: Pay and we pack

The Suzuki DF25AS5 for sale leaves in its sealed Suzuki crate. We add extra strapping and wrap for long transit.

Step 3: Track it

You get tracking details once the freight is booked. We ship worldwide by sea, air or courier depending on where you are.

Import costs

Duties and taxes are set by your country and are paid at import. We provide the commercial invoice and packing list your broker needs.

Warranty

Suzuki warranty cover depends on the region the motor is registered in, and on whether use is recreational or commercial. Tell us where the Suzuki DF25AS5 for sale will be used and we confirm the terms before you order. Our refund and return policy and terms and conditions cover the shop side.

Inside the Crate

• Complete Suzuki DF25AS5 outboard, factory assembled
• Tiller handle with throttle grip, friction adjuster and stop switch
• Aluminium propeller with nut and pin
• Portable fuel tank, hose and primer bulb
• Emergency stop lanyard
• Tool kit and spare parts
• Owner’s manual and warranty card

On the Water with the Suzuki DF25AS5 for Sale

Owners mostly comment on two things: how quiet it is and how easy it is to steer. Three cylinders give a smooth idle that does not rattle the boat. The tiller is light, and you can tune the steering friction so it holds course on its own.

On a light 12 to 14 foot aluminium boat with one person, the Suzuki DF25AS5 for sale gets on plane quickly and cruises comfortably. Top speed depends heavily on hull and load, so ask us for a realistic number for your boat rather than trusting a brochure.

Trolling is good. The EFI holds a low idle without loading up, which matters on a long slow drift for fish.

Fuel burn is modest. At an easy cruise most owners see around a gallon an hour, give or take, and less at trolling speed. Full throttle uses roughly double that.

Starting Technique That Works Every Time

A lot of people who say they struggle with rope start are pulling wrong. Here is how we teach it at the dock.

1. Put the shift lever in neutral and clip the kill cord on.
2. Squeeze the primer bulb until it goes firm. Do not keep squeezing after that.
3. Set the throttle grip to the start mark.
4. Pull the handle slowly until you feel resistance. That is the compression stroke.
5. Let it go back a little, then give one smooth, full pull. Speed matters more than force.

Done this way, the Suzuki DF25AS5 for sale usually fires on the first or second pull. Do not wrap the rope around your hand, and let the handle return slowly rather than letting it snap back.

Cold mornings

EFI handles cold starts well because the ECU adds fuel based on engine temperature. There is no choke knob. If the motor has sat for weeks, give it an extra pull or two to bring fuel up from the tank.

Fitting a Suzuki DF25AS5 for Sale to an Inflatable

Inflatables are one of the most common homes for this motor. A few tips from boats we have rigged:

• Check the transom height on the inflatable itself. Many 3.8 to 4.3 metre RIBs use a 15 inch transom, but some larger models take a 20 inch shaft.
• Fit a transom plate so the clamp screws do not crush the wood.
• Use a lower pitch prop if you carry three or four adults. The Suzuki DF25AS5 for sale will plane a loaded inflatable more easily with a 9 or 10 inch pitch.
• Mind the weight. At around 136 lb this is light for a 25, but still a lot hanging off a soft transom. Keep the fuel tank and battery, if any, forward.

Trailering and Transport

On a trailer, the transom takes a beating every time you hit a pothole with the motor tilted. A simple transom saver bar between the trailer and the lower unit takes that load off. With manual tilt, the Suzuki DF25AS5 for sale locks in the up position with the tilt lever, but a support is still kinder to the bracket.

If you take the motor off the boat between trips, carry it upright or lying on the side Suzuki marks in the owner’s manual. Lay it on the wrong side and oil can run where it should not. Let it drain fully before lifting it off.

Spare Parts to Keep on Board

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Rope start motors are about as self reliant as boating gets, so carry a small kit to match. We suggest a spare prop nut and cotter pin, a shear or drive pin if your prop uses one, a spare spark plug and plug spanner, a recoil rope, and a spare kill cord. Keep a short length of fuel hose and two hose clamps too. All of this fits in a zip bag under a seat. With that kit the Suzuki DF25AS5 for sale can be brought home from most small breakdowns without a tow.

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Cost of Ownership Over the Years

Buyers often ask what the Suzuki DF25AS5 for sale costs to keep after the purchase. For a recreational owner doing 50 to 100 hours a year, the yearly bill is modest. Oil, an oil filter if fitted, gear oil and a set of plugs cover most years. Every couple of years add an impeller kit and anodes.

Fuel is the biggest running cost, and Lean Burn keeps that down. No battery means no battery to replace every few seasons, which is a small saving most people forget about.

Resale on a well kept Suzuki 25 four stroke is strong. Keep your service receipts and the owner’s manual, and the Suzuki DF25AS5 for sale will hold its value well if you ever move up to a bigger motor.

Shallow Water and Beaching

Running skinny water with manual tilt is simple once you get the hang of it. The tilt bracket includes a shallow water setting that lets you run at low speed with the motor partly tilted. The owner’s manual shows how to engage it. Use it only at slow speed and keep an eye on the tell-tale, since the water intake sits higher in that position.

When beaching, tilt the Suzuki DF25AS5 for sale fully up before the skeg touches sand. Grinding the skeg and prop on a beach is the most common damage we see on small tillers.

Before You Click Buy

1. Transom is about 15 inches? Good.
2. Boat is rated for 25 HP? Good.
3. Happy to pull start? Good.
4. Need lights or electronics? Ask about the charging kit.
5. Know your delivery port or address? Send it for a freight quote.
6. Checked local import rules? Worth doing early.

Read feedback from past buyers on our reviews page, find out who we are, and pick up more rigging advice on the blog.

Suzuki DF25AS5 for Sale: FAQ

Is the Suzuki DF25AS5 for sale really new?

Yes. New, unused, in the original Suzuki crate with the factory serial number.

Does it need a battery?

No. The fuel injection runs without one. A battery is only needed if you add the optional charging kit for accessories.

Can I add electric start later?

It is possible in theory but expensive. If you think you will want it, buy the DF25AES5 instead.

How much does it weigh?

About 62 kg, or roughly 136 lb, which makes it the lightest DF25A version.

Is it good for salt water?

Yes, as long as you flush it after use and look after the anodes.

What fuel and oil does it use?

Regular unleaded at 87 octane or above, and a four stroke marine oil, usually 10W-40 or 10W-30.

Do you ship to my country?

We ship worldwide. Send your location and we will quote freight before payment.

Order the Suzuki DF25AS5 for Sale

Simple, light and easy to live with. If that is what you want from a 25, add the Suzuki DF25AS5 for sale to your cart or ask us for a shipping quote. You can also browse the full shop or compare models on the official Suzuki outboards page.