SUZUKI 25 HP DF25ATHS2 OUTBOARD MOTOR

Description

The Suzuki DF25ATHS2 for sale is a new 25 HP four stroke with a 15 inch short shaft, tiller steering, key start and power trim and tilt. It is the short shaft motor for people who want every convenience on a small boat. We sell it new in the Suzuki crate, the price is on this page, and we ship worldwide after sending you a delivery quote.

Short transom boats often end up with the most basic motors. That makes sense on a dinghy, less so on a 15 foot fishing boat that you use every weekend. The Suzuki DF25ATHS2 for sale gives a short transom boat the same switch operated tilt and electric start that long shaft owners take for granted.

Suzuki DF25ATHS2 for sale: what each letter means

Here is the code on the Suzuki DF25ATHS2 for sale explained:

• DF: four stroke Suzuki outboard.
• 25: 25 horsepower.
• A: the three cylinder, battery-less EFI series.
• T: power trim and tilt, which on the DF25A also means electric start.
• H: tiller handle steering.
• S: short shaft, 15 inches.
• 2: production version suffix.

There is no W, so the colour is the standard Suzuki dark finish. The white version of this exact layout is the Suzuki DF25ATHSW2. And there is an emergency recoil starter on board too, for days when the battery lets you down.

Who should buy the Suzuki DF25ATHS2 for sale

We usually sell this model to people with a 15 inch transom who use the boat a lot and want less effort. Typical boats for the Suzuki DF25ATHS2 for sale:

• Aluminium fishing boats from about 12 to 15 feet with a short transom.
• Inflatables and small RIBs with a 15 inch transom that are rated for 25 HP.
• Small jon boats and duck boats with a short transom.
• Yacht tenders that are hauled up beaches.
• Rental and club boats where users are not used to pull starting.

The common thread is frequent lifting. If you run onto beaches, over sand bars or through weed, you lift the motor a lot. Doing that by hand with a 25 gets old fast. With the Suzuki DF25ATHS2 for sale you press a switch.

Who should skip it

If your boat sits on a mooring and you only use it occasionally, the battery and trim unit are extra things to maintain. The manual start Suzuki DF25AS2 or the electric start, manual tilt Suzuki DF25AES2 may suit you better and cost less. If your transom is 20 inches, the Suzuki DF25ATHS2 for sale is the wrong shaft length. Look at the long shaft Suzuki DF25ATHL2.

Technical data for the Suzuki DF25ATHS2 for sale

Figures below follow Suzuki’s published DF25A data. Weight is dry, excluding prop and oil, and is approximate.

Suzuki’s DF25A and DF30A overview is on the Global Suzuki lineup page if you want the factory version.

The features that matter here

Power trim on a short boat

Small, short boats are very sensitive to trim. A few degrees changes how the bow rides, how much spray comes aboard and how fast you go. With a manual trim rod you pick one hole and stop the boat to change it. With the Suzuki DF25ATHS2 for sale you trim while running. Trim in to get on plane with a load, trim out a little in flat water to free up the bow, trim in again in a chop. It is a real gain, not a gadget.

EFI that runs without a battery

The fuel injection system takes its power from the flywheel once the engine is turning. So if your battery dies, pull the emergency rope and the motor will run. That design is one reason we trust these motors on remote water.

Lean Burn Control

At steady cruise the ECU leans the mixture to save fuel. On a small boat with a portable tank, this means more hours between fills. Owners coming from older carb 25s usually notice it in the first month.

Three cylinders, low vibration

Many 25s are twins. The DF25A is a triple with an offset crankshaft and roller rocker arms. The Suzuki DF25ATHS2 for sale idles smoothly and trolls without shaking your hand numb. Noise is low enough to talk normally at cruise.

Protection

• LED warnings for low oil pressure, overheating and over rev.
• Rev limiter for prop ventilation or a lifted motor.
• Will only start in neutral.
• Kill cord stop switch.

Small things owners like

• Freshwater flush port, no muffs needed.
• Front shift lever you can reach from the seat.
• 12V 14A alternator for electronics.
• Built in carry handles.
• Suzuki anti-corrosion finish for salt water.

Weight and balance on a small hull

The power trim unit adds weight. At about 73 kg dry, the Suzuki DF25ATHS2 for sale is a few kilos heavier than the manual tilt AES2. On a 12 or 13 foot boat, that weight sits right on the transom. Put the battery and fuel tank forward of the rear seat where possible. A level boat planes sooner and handles chop better.

Also check that your transom is sound. Old wooden cores in aluminium and fibreglass boats can be soft. A heavier motor on a weak transom flexes and cracks. Press hard on the top of the transom with the motor off. If it moves, fix that before you mount a new motor.

Rigging the Suzuki DF25ATHS2 for sale

As a tiller motor, the Suzuki DF25ATHS2 for sale needs no remote controls, no steering cables and no gauges. Here is what you need besides the motor:

1. 12V marine battery in a vented, strapped box. It powers the starter and the trim motor. A starting battery around group 24 size is common.
2. Fuel tank and hose with primer bulb.
3. Through bolts for the bracket. On power tilt models we always recommend bolting through.
4. Engine oil if the motor arrives without it. Read the dipstick before you start.
5. The right prop for your boat.
6. Optional: battery switch, fuse block, tiller extension, transom saver for trailering.

Battery choice

Because the trim motor draws a fair amount of current, a weak or tiny battery will cause trouble. Buy a decent marine starting or dual purpose battery, keep it charged, and keep the cable runs short. Battery problems are the number one reason we hear from owners of power trim tillers.

Propeller selection

With your usual load, full throttle should land between 5,000 and 6,000 rpm. If the Suzuki DF25ATHS2 for sale hits the limiter, add pitch. If it tops out below 5,000, reduce pitch. Inflatables often run well with more pitch, loaded aluminium boats with less. Tell us your boat when ordering and we will suggest one.

How to measure for a short shaft

Measure your transom before you order the Suzuki DF25ATHS2 for sale:

• At the centre of the transom, measure from the top edge straight down to the bottom of the hull.
• About 15 inches: short shaft, this model.
• About 20 inches: long shaft, see the L models.
• On inflatables, measure to the keel line, not the tubes.

When mounted, the anti-ventilation plate should sit level with the bottom of the hull or up to about an inch below. Too high and the prop blows out in turns. Too low and you get drag and spray.

Setting up the tiller

Before the first real trip, adjust a few things:

• Steering friction: firm enough that the motor holds course when you let go for a second.
• Throttle friction: so the grip stays where you leave it at trolling speed.
• Gearcase trim tab: adjust if the boat pulls left or right at cruise.
• Kill cord: clip it to yourself.

On a small boat you often sit very close to the motor. A tiller extension lets you sit further forward and keeps the boat level. It is a cheap add on and we can ship one with the Suzuki DF25ATHS2 for sale.

Break-in for the Suzuki DF25ATHS2 for sale

The first ten hours matter. Follow the owner’s manual, and as a simple version:

The one mistake to avoid: long periods at one constant speed. Vary it. And check the oil every outing while the motor is new.

Service schedule

The Suzuki DF25ATHS2 for sale is easy to look after. Use the manual for exact intervals. A practical version:

• Every trip: oil level, telltale stream, fuel line condition, freshwater flush after salt.
• Every 100 hours or yearly: engine oil and filter, gear oil, plugs check, grease all fittings, anodes, trim fluid level.
• Every 200 hours or 2 years: new plugs, thermostat and water pump check.
• About every 3 years: new water pump impeller.

Genuine parts and service kits are listed at Suzuki genuine parts and accessories. We can add a kit to your order of the Suzuki DF25ATHS2 for sale.

Trim unit care

Check the trim fluid reservoir once a season with the motor tilted fully up. Keep the trim rams clean and rinse them after salt use. Grease the tilt tube and swivel bracket fittings. A neglected trim unit is expensive. A cared for one lasts many years.

Salt water care for the Suzuki DF25ATHS2 for sale

The DF25A is built for salt use. Your habits decide how it looks in five years:

1. Flush through the flush port with fresh water after every trip.
2. Rinse the outside, the bracket and the trim unit.
3. Tilt the motor up when moored. With the switch it takes seconds.
4. Check anodes every couple of months, replace at half size, never paint them.
5. Spray the powerhead and connectors with corrosion inhibitor monthly.
6. Keep battery terminals clean and coated.

Beaching, shallows and trailering

Power tilt really shows its value at the beach. Come in slowly, trim the Suzuki DF25ATHS2 for sale up as the bottom gets close, keep an eye on the telltale, and shut down before the skeg touches. Tilt fully up before anyone jumps out. Avoid running in reverse in very shallow water. It throws sand at the seals.

When trailering, use a transom saver bar so the trim rams do not take every bump. Many trim unit repairs we see come from long road trips without support.

There is a manual release valve on the bracket. Open it to move the motor by hand if the battery is dead. Close it before running, or the motor will kick up in reverse.

Fuel habits and winter storage

EFI is forgiving, but water and old fuel still cause most small outboard trouble. Use fresh unleaded with low ethanol, add stabiliser for storage, and fit a water separating filter if your fuel source is doubtful. Check the primer bulb and hose each season.

For the winter: run stabilised fuel through the Suzuki DF25ATHS2 for sale, flush it, change the engine and gear oil, and store it upright or on the boat under a cover. Keep the battery on a maintainer. In spring it should start on the key.

On fuel burn: at relaxed cruise on a small aluminium boat or RIB, many owners see somewhere around 1.5 to 2 gallons (6 to 8 litres) per hour. Trolling uses much less, full throttle more. It depends heavily on the boat.

Your first trip with the motor

We get the same few questions after every delivery, so here is the first day routine we suggest for a new Suzuki DF25ATHS2 for sale:

1. Check the engine oil on the dipstick and the gear oil level before anything else.
2. Confirm the clamp screws and through bolts are tight and the motor sits straight on the transom.
3. Connect the battery: red to positive, black to negative, terminals tight and covered.
4. Run the trim up and down once on the trailer or at the dock to see it moves smoothly.
5. Fill the tank with fresh fuel, connect the line, squeeze the bulb until firm.
6. Lower the motor into the water, neutral, kill cord on, turn the key.
7. Watch for the telltale stream within a few seconds of starting.

Then idle for a few minutes and run gently, following the break-in steps above. Bring a basic kit: spare kill cord clip, spare prop nut and pin, a spark plug spanner, and a phone in a dry bag. After the trip, re-check the bolts. They settle on a new install.

Paperwork worth keeping

Keep the crate label, the invoice and the serial number together with the owner’s manual. You need the serial for warranty registration and for ordering correct parts later. Take a photo of the serial plate on the bracket of the Suzuki DF25ATHS2 for sale as soon as it arrives.

Electronics on a small tiller boat

A lot of buyers add a fish finder and navigation lights once the motor is on. The 12V 14A alternator on the Suzuki DF25ATHS2 for sale handles those easily. A few tips from our rigging work:

• Run electronics through a small fuse block, not straight to the battery posts.
• Use tinned marine wire and heat shrink connectors.
• Keep the transducer away from the prop wash, usually a little to one side of the motor.
• Add a battery switch so nothing drains the battery while the boat sits.

If you plan a trolling motor as well, give it its own battery. The trim and starter on the Suzuki DF25ATHS2 for sale need a healthy battery, and a trolling motor will flatten a shared one quickly.

Common problems and fixes

Trim will not lift the motor

Low battery is the usual cause. Then check the fuse and the trim switch connections.

Starter clicks only

Battery charge or a loose terminal. Make sure the motor is in neutral and the kill cord is clipped on.

Engine cranks, no start

Tank vent open? Bulb firm? Connector fully seated? If all yes, suspect stale or contaminated fuel.

Weak telltale

Clear it with a wire. Check intakes for weed. Then the impeller.

Prop ventilates in turns

Trimmed out too far, or the motor is mounted too high. Trim in a bit, or lower the motor one hole on the bracket.

Suzuki DF25ATHS2 for sale vs neighbouring models

We stock the full small Suzuki line, so here is how the Suzuki DF25ATHS2 for sale compares:

• Suzuki DF25AES2: same short shaft and tiller with electric start, but manual tilt. Lighter and cheaper.
• Suzuki DF25ATS2: short shaft with power trim and remote steering, for boats with a wheel.
• Suzuki DF25ATHSW2: this exact motor in white.
• Suzuki DF25ATHS5: the 5 series version of this configuration.
• Suzuki DF20ATS2: 20 HP short shaft with power trim, for boats rated lower.

If you are torn between the AES2 and this one, ask yourself how often you lift the motor. Once a day, manual tilt is fine. Ten times a day, get the Suzuki DF25ATHS2 for sale. The whole range is in our 25 HP Suzuki outboards category.

Questions we hear before people order

Is a 25 too much for my 14 footer? Only the capacity plate can say. Many 14 foot aluminium boats are rated for 25 or 30 HP, some only for 20.

Should I get the 30 instead? If your boat allows 30 HP and you carry heavy loads, a Suzuki DF30ATHL2 is worth a look, but note the DF30A tiller with power tilt we stock is long shaft. For a 15 inch transom, the Suzuki DF25ATHS2 for sale is the strongest short shaft tiller in this family.

Will it outlast my boat? With regular oil changes, flushing and an impeller every few years, small Suzukis often do. We have customers running DF25A motors for many seasons with nothing more than routine service.

Buying the Suzuki DF25ATHS2 for sale from us

We are an outboard dealer selling new motors worldwide. The Suzuki DF25ATHS2 for sale on this page is new and unused, in the original factory crate.

1. Send us the model and delivery address or port via the contact page.
2. We reply with a delivery quote and estimated time. Nothing to pay yet.
3. You approve and pay for the motor and freight.
4. We ship and send tracking and paperwork.

The motor price is shown on this page. Freight depends on where you are and how it travels: courier, air or sea. Import duties and taxes are normally paid by the buyer at destination, and we tell you what we know before you pay.

Warranty

The Suzuki DF25ATHS2 for sale carries Suzuki’s factory limited warranty. The term depends on your region and on recreational or commercial use. Many markets give three years for recreational owners. We confirm the terms for your country first.

Please read our refund and return policy and terms and conditions before ordering.

What is in the crate

• DF25ATHS2 outboard with tiller, starter and power trim and tilt
• Battery cable lead
• Standard pitch propeller
• Portable fuel tank and line, depending on batch
• Tool kit
• Owner’s manual and warranty papers

Contents can vary a little by batch. The battery is not included, buy one locally.

Checklist before you order

• Transom about 15 inches.
• Capacity plate allows 25 HP or more.
• Transom is solid enough for about 73 kg.
• You want tiller steering and power tilt.
• You have room for a battery.
• Delivery address or port ready.

FAQ: Suzuki DF25ATHS2 for sale

Is the Suzuki DF25ATHS2 for sale brand new?

Yes. New, never mounted, in the Suzuki crate.

Can I start it with a flat battery?

Yes, with the emergency recoil. The EFI does not need a battery to run. The trim does, or use the manual release valve.

Is it too heavy for an inflatable?

Check the transom rating. Many RIBs with a 15 inch transom rated for 25 HP take it fine. Very light tenders may be better with a manual tilt model.

Does it charge the battery?

Yes, through a 12V 14A alternator.

Do you ship the Suzuki DF25ATHS2 for sale worldwide?

Yes. We quote delivery before you pay.

Where can I compare other Suzuki outboards?

Our Suzuki category, the full shop, and Suzuki’s outboard range page.

Order your Suzuki DF25ATHS2 for sale

Send your address and we will price the delivery. Read about our shop, check the reviews, or browse care tips on our blog. The Suzuki DF25ATHS2 for sale is in stock and ready to ship.