Suzuki 25 HP DF25AES5 Outboard Motor

Description

The Suzuki DF25AES5 for sale here is a brand new 25 horsepower Suzuki four stroke with a 15 inch short shaft, tiller steering, manual tilt and a push button electric starter that still keeps the pull rope as a backup. It ships in the sealed factory crate, the price is listed on this page, and we send it anywhere in the world.

We have sold a lot of the 25 HP Suzukis over the years. The Suzuki DF25AES5 for sale, an electric start, short shaft version, is the one we hand to people who want push button convenience but do not want to pay for or carry the weight of a power tilt unit.

What the Model Code on the Suzuki DF25AES5 for Sale Means

Suzuki codes look like alphabet soup until you break them apart. Each letter tells you something about the Suzuki DF25AES5 for sale that arrives in the crate.

• DF: Suzuki four stroke outboard.
• 25: rated at 25 horsepower (18.4 kW).
• A: the A generation, the newer three cylinder EFI design Suzuki launched in 2014.
• E: electric start, with a manual recoil starter kept as a backup.
• S: short shaft, 15 inches (381 mm).
• 5: the later production run of the same DF25A, which is what dealers now receive.

There is no T in the code, so the Suzuki DF25AES5 for sale does not have power trim and tilt. You tilt it by hand and set the running angle with the trim rod on the transom bracket. There is no W either, so it comes in the standard dark Suzuki colour, not the Cool Test Gray white option. Steering is by tiller handle with a twist grip throttle.

Who Should Buy the Suzuki DF25AES5 for Sale

The short shaft is the deciding factor. A 15 inch shaft fits a transom that measures roughly 15 inches from the top of the transom down to the bottom of the hull. That means smaller aluminium boats, many inflatables with a short transom, small car-toppers that are rated for 25 HP, and older tenders.

Our customers with the Suzuki DF25AES5 for sale in their cart usually fall into a few groups:

• Owners of 12 to 14 foot aluminium utility boats with a short transom who want to start with a key or button instead of pulling a rope every time.
• Inflatable and RIB owners with a 15 inch transom who run a tender off a bigger boat.
• Older anglers, or anyone with a shoulder problem, who can no longer pull start a three cylinder engine all day.
• Fishing camp and resort operators who want guests to start the boat without coaching.

If your transom is 20 inches, the Suzuki DF25AES5 for sale is the wrong motor. Look at the long shaft versions linked further down. Hanging a short shaft on a long transom puts the anti-ventilation plate too high, the prop sucks air and the motor will overrev and cavitate in turns.

Suzuki DF25AES5 for Sale: Full Specifications

These figures come from Suzuki published data for the DF25A family. Weight is approximate and varies a little by market and by what is fitted.

The Suzuki DF25AES5 for sale is the same powerhead as every other DF25A. What changes between versions is the shaft, starter, tilt system and colour. That is useful when you need parts, because the engine side is shared across the whole range.

Features That Matter on This Motor

Battery-less EFI

This is the big one. The fuel injection system runs off the power generated as the flywheel turns, so it does not need a battery to start or run. On the Suzuki DF25AES5 for sale you do need a battery for the electric starter, but if that battery goes flat you can still pull the rope and the engine will fire and run normally. No carburettor to gum up over winter, no choke to fiddle with.

Lean Burn Control

Suzuki’s Lean Burn system reads engine load and leans the mixture out when it is safe to do so, mostly at cruising speed. Suzuki claimed up to 15 percent better economy over the older carbureted DF25 in its own testing. In real use our customers tell us a 6 gallon tank lasts a long fishing day on a light boat.

Three Cylinders, Light Weight

Most rivals in this class are twins. The extra cylinder makes the Suzuki DF25AES5 for sale noticeably smoother at idle and when trolling. Suzuki also used roller rocker arms and an offset crankshaft to cut friction. The A series was light for its class when it came out and it is still easy to lift onto a transom with two people.

Electric Start with Backup

The starter and 12V 14A charging system mean you can also run a fish finder or nav lights off the same battery. The recoil handle stays on the front of the cowl, which matters if you ever get stuck with a dead battery far from the ramp.

Freshwater Flush Port

A garden hose fitting lets you flush salt and silt out of the cooling passages without muffs. Use it after every salt trip. It is the single best thing you can do for the life of the motor.

Rigging the Suzuki DF25AES5 for Sale: What Else You Need

A tiller motor is simple to rig, which is part of the appeal. There are still a few things to sort out before your first trip.

• Battery: a marine starting battery of around 500 to 650 CCA is plenty. Keep it in a strapped battery box.
• Battery cables: supplied cable length suits most small boats. Measure first if your battery sits forward.
• Fuel tank and line: the portable tank and line come in the crate. Check that your fitting matches if you plan to use your own tank.
• Propeller: the motor ships with an aluminium prop. You may want a different pitch for heavy loads or a light, fast hull.
• Transom clamp bolts: through-bolting is strongly recommended on a 25 HP. The clamps alone can loosen over time.
• Kill cord: the lanyard is supplied. Wear it.

No remote control box, no cables and no gauges are needed, since everything is on the tiller handle. That keeps the total cost of a Suzuki DF25AES5 for sale package well below a remote steer setup.

Prop Choice

Aim for wide open throttle between 5,000 and 6,000 rpm with your normal load. If the motor tops out below 5,000, drop pitch by one or two inches. If it hits the rev limiter, go up. On light aluminium boats the stock 11 inch pitch is usually right. On loaded inflatables with three adults we often fit a 9 or 10 pitch.

How to Measure Your Transom for the Suzuki DF25AES5 for Sale

Measure straight down the centre of the transom, from the top edge where the clamps sit to the bottom of the hull. On a V hull, lay a straightedge along the bottom and measure to that line.

• About 15 inches: short shaft. This motor fits.
• About 20 inches: long shaft. Choose an L model.
• Between the two: call us with photos and we will help you decide.

Once mounted, the anti-ventilation plate should sit level with the bottom of the hull or up to about an inch below. On a flat bottom jon boat the Suzuki DF25AES5 for sale often runs best with the plate right at hull level.

Break-In for a New Suzuki DF25AES5 for Sale

Break-in takes 10 hours. Follow it and the Suzuki DF25AES5 for sale will reward you for years.

1. First 15 minutes: idle and very low throttle in gear.
2. Next 45 minutes: under half throttle, around 3,000 rpm or less. Vary the speed.
3. Next hour: up to about 4,000 rpm, with short bursts to full throttle allowed.
4. Hours 2 to 10: normal use, but avoid long periods at full throttle and keep changing speed.

Change the engine oil and filter, if fitted, at the first service. Suzuki calls for it at 20 hours or one month. Our service guys see more trouble from skipped first services than from anything else.

Maintenance Schedule

The Suzuki DF25AES5 for sale is not hard to look after. Most of this you can do in a driveway with basic hand tools.

Use genuine filters, plugs and impeller kits. You can find them through the Suzuki genuine parts and accessories catalogue or ask us to add a service kit to your order.

How the Suzuki DF25AES5 for Sale Runs on the Water

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People ask us what it actually feels like to drive. The short answer is quiet and easy. At idle the three cylinder hums along with very little shake through the tiller, which you notice most when trolling for an hour.

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Shifting is light. The shift lever is on the side of the motor and moves cleanly between forward, neutral and reverse. The Suzuki DF25AES5 for sale will only start in neutral, so you will not jump off the ramp by accident.

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Throttle response from the EFI is clean. There is no stumble when you twist the grip, and hole shot on a light hull is quick. On a 14 foot aluminium boat with two people and gear, expect to get on plane in a few seconds without leaning forward.

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Steering friction is adjustable with a knob under the tiller. Set it so the Suzuki DF25AES5 for sale holds a straight line when you let go for a moment to grab a rod. Too loose and the motor wanders, too tight and your arm gets tired.

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Noise is low for a 25. You can talk to the person in the bow at cruise without shouting, and many owners say the motor is quieter than the twin cylinder engine it replaced.

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Fuel Use in Real Life

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Fuel burn depends on load and throttle, so treat these as rough guides. At trolling speeds the Suzuki DF25AES5 for sale sips fuel, well under half a gallon an hour. At a relaxed cruise around 4,000 rpm most owners report a little over a gallon an hour. Wide open it will use more, roughly two gallons an hour or a bit above. Lean Burn helps most at steady cruise, so that is where you will see the savings.

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Storage Over Winter

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If you lay the Suzuki DF25AES5 for sale up for a few months, add fuel stabiliser to the tank and run the motor for ten minutes so treated fuel reaches the injection system. Change the engine oil before storage, not after, so acids in old oil do not sit in the engine. Store it upright or tilted on its bracket, take the battery home and keep it on a smart charger.

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Salt Water Care

The Suzuki DF25AES5 for sale is built for salt use, but no outboard likes being left full of salt.

• Flush through the flush port with fresh water for 10 to 15 minutes after every salt trip.
• Tilt the motor up when the boat sits on a mooring so the gearcase is out of the water.
• Rinse the outside of the cowl and bracket. Spray a corrosion guard on the bracket and electrical connections.
• Never paint over anodes.
• Keep the battery cable terminals clean and greased.

Customers in tropical salt water who do this every time get many years from a Suzuki DF25AES5 for sale. The ones who skip it are the ones calling us about overheating alarms.

Common Issues and Simple Fixes

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Most problems we hear about on the Suzuki DF25AES5 for sale are small and owner fixable. Here are the ones that come up most.

Starter clicks but does not turn

Nine times out of ten it is a weak battery or a loose terminal. Charge the battery, clean the terminals, check the main fuse. Pull start the Suzuki DF25AES5 for sale in the meantime.

Weak tell-tale stream

The pee hole can block with sand or salt. Poke it clear with a small wire. If the stream is still weak, suspect the impeller.

Hard starting after storage

Old fuel is the usual cause, even with EFI. Drain the tank, refill with fresh fuel and squeeze the primer bulb until firm.

Motor kicks up when reversing

Check that the tilt lock lever is set to run, not tilt. On a manual tilt Suzuki DF25AES5 for sale the lever must be engaged for reverse thrust.

Overrevving or cavitation

Usually the motor is mounted too high or the prop is damaged. Lower it one hole and inspect the blades.

Suzuki DF25AES5 for Sale Compared with Its Neighbours

Choosing the right version saves money and frustration. Here is how this one sits against the others we stock.

• Suzuki DF25AS5: same short shaft and manual tilt, but rope start only. Lighter and cheaper. Good if you do not need a battery on board.
• Suzuki DF25ATHS5: short shaft tiller with power trim and tilt and electric start. Worth it if you beach the boat often or run in shallow water.
• Suzuki DF25ATHL5: the long shaft power tilt tiller version for 20 inch transoms.
• Suzuki DF25ATS5: remote steering with power trim and tilt on a short shaft, for boats with a console.
• Suzuki DF20AES5: same layout at 20 HP, if your boat’s capacity plate tops out lower.
• Suzuki DF30ATHL5: a step up to 30 HP for heavier hulls with a long transom.

You can also see every 25 HP option in our 25 HP Suzuki outboards section, or the full Suzuki outboard range. For Suzuki’s own overview of the line, see the DF30A and DF25A page on Global Suzuki.

Buying the Suzuki DF25AES5 for Sale from Us

We sell new outboards, not used or rebuilt. Every Suzuki DF25AES5 for sale we ship leaves in its original Suzuki crate with the factory paperwork and serial plate intact.

Price and Payment

The current price is shown at the top of this page. Before you pay anything we send a written delivery quote for your address or nearest port, so you know the full landed cost of freight to your door or terminal. Duties and local taxes are set by your country and are paid on import.

Worldwide Shipping

We ship worldwide by sea and air freight, and by courier for smaller destinations where it makes sense. The crate is strapped and wrapped for long transit. Most customers who order the Suzuki DF25AES5 for sale receive a tracking number within a few business days of payment.

Warranty

Suzuki warranty terms depend on the region where the motor is registered and used. In many markets recreational buyers get a multi-year limited warranty, while commercial use usually carries a shorter term. Tell us where the motor will be used and we will confirm what applies before you order. Our refund and return policy and terms and conditions explain the rest.

What Comes in the Crate

• Suzuki DF25AES5 powerhead, midsection and gearcase, fully assembled
• Tiller handle with twist throttle, shift lever and stop switch
• Aluminium 3 blade propeller and hardware
• Portable fuel tank and fuel line with primer bulb
• Battery cables
• Emergency stop lanyard
• Basic tool kit and spare parts bag
• Owner’s manual and warranty documents

The battery is not included with the Suzuki DF25AES5 for sale. Batteries cannot travel by air freight in most cases, so buy one locally.

Checklist Before You Order the Suzuki DF25AES5 for Sale

1. Measure your transom height. Confirm it is about 15 inches.
2. Check the capacity plate. Your boat must be rated for 25 HP or more.
3. Decide if you are happy with manual tilt. If you trailer or beach a lot, think about power tilt.
4. Plan where the battery will sit and how you will secure it.
5. Know your delivery address or port so we can quote freight.
6. Check import rules for outboard motors in your country.

Have questions on any of these? Read what other buyers say on our reviews page, learn more about our shop, or browse the blog for rigging tips.

Suzuki DF25AES5 for Sale: Frequently Asked Questions

Can I start the DF25AES5 without a battery?

Yes. The EFI is battery-less, so a pull on the recoil starter will start and run the engine. You need the battery only for the electric starter.

Does the Suzuki DF25AES5 for sale have power trim?

No. It has manual tilt with a trim rod. If you want power trim and tilt, look at the DF25ATHS5.

How fast will it push my boat?

It depends on hull and load. A light 14 foot aluminium boat with one person commonly reaches mid to high 20s mph. A loaded inflatable will be slower. Tell us your boat and we can give you a fair estimate.

Can I convert it to remote steering later?

It is possible with the right Suzuki parts, but it is usually cheaper to buy a remote model like the DF25ATS5 from the start.

What oil does it use?

A quality four stroke marine oil, normally SAE 10W-40 or 10W-30. Check the dipstick for the correct level.

Is this a new motor?

Yes. Every Suzuki DF25AES5 for sale on our site is new, never mounted, and ships in the factory crate.

How long does delivery take?

It depends on the destination and freight method. Your delivery quote will include an estimated transit time.

Order Your Suzuki DF25AES5 for Sale Today

If your transom is short and you want push button starting without the cost of power tilt, the Suzuki DF25AES5 for sale is a sensible buy. Add the Suzuki DF25AES5 for sale to your cart, or contact us for a delivery quote first. You can also browse the rest of the shop or check the official Suzuki outboards line-up to compare.