SUZUKI 25 HP DF25ATHSW2 OUTBOARD MOTOR

Description

The Suzuki DF25ATHSW2 for sale on this page is a brand new 25 HP tiller outboard with a 15 inch short shaft, electric start and power trim and tilt, finished in Suzuki’s Cool Test Gray white. It comes in the factory crate, the price is on the page, and we ship it worldwide.

We have sold a lot of these little three cylinder Suzukis over the years. People buy them for jon boats, skiffs, tenders and small aluminium fishing boats, and most of them come back for the next motor. This page is the long version of what we tell customers on the phone about the Suzuki DF25ATHSW2 for sale.

What the Suzuki DF25ATHSW2 for sale model code means

Suzuki model codes look like alphabet soup until you read them one letter at a time. Here is the code on the Suzuki DF25ATHSW2 for sale here, broken down:

• DF: Suzuki four stroke outboard.
• 25: 25 horsepower.
• A: the DF25A generation, the three cylinder, battery-less EFI design.
• T: power trim and tilt.
• H: tiller handle steering.
• S: short shaft, 15 inches.
• W: white cowling, which Suzuki calls Cool Test Gray.
• 2: the production series suffix Suzuki uses on this listing.

So the Suzuki DF25ATHSW2 for sale is the white, short shaft, tiller steered, power trim version of the DF25A. The tiller models with power trim also have electric start, with a manual pull rope as backup.

If you see a DF25ATHS2, that is the same motor as the Suzuki DF25ATHSW2 for sale, just in the standard dark Suzuki colour. Mechanically they are the same. The only reason to pick one over the other is how it looks on your boat.

Who buys the Suzuki DF25ATHSW2 for sale

The short shaft matters more than anything else here. A 15 inch shaft fits a transom that measures about 15 inches from the top of the transom to the bottom of the hull. That is common on small jon boats, flat bottom skiffs, many inflatables with wooden transoms, and some older aluminium boats.

The tiller handle makes the Suzuki DF25ATHSW2 for sale a good fit when you want to sit in the stern and drive, with no console, no cables and no steering wheel. Duck hunters, river anglers, people running small work boats, and folks who fish shallow lakes buy this setup most.

Power trim and tilt is the reason people choose the Suzuki DF25ATHSW2 for sale over the plain manual tilt tiller models. On a small boat with one person aft, being able to trim the bow down to get on plane, then trim out for speed, makes a real difference. Lifting the motor in shallow water with a button instead of your back helps too.

The white finish is popular in salt water areas and on boats with white hulls. Some customers just like the look. A few tell us the white shows salt crust sooner, so they rinse more often, which is not a bad thing.

Boats that are a poor match

If your transom measures closer to 20 inches, the Suzuki DF25ATHSW2 for sale has the wrong shaft for you. Running a short shaft on a long shaft transom lifts the anti-ventilation plate too high and the prop will blow out in turns. In that case look at the long shaft tiller version. If you want a console with a wheel, look at the remote models further down.

Specifications of the Suzuki DF25ATHSW2 for sale

These are the figures for the Suzuki DF25ATHSW2 for sale from Suzuki’s published data and the factory spec sheet. Weights are approximate and change a little with prop and fluids.

For the full Suzuki portable range and official data, see the Suzuki Marine outboard lineup.

Features that matter on this 25 HP tiller

Battery-less EFI

This is the big one. The DF25A was the first 25 HP outboard to run fuel injection without needing a battery to power the injection system. The motor makes its own power for the EFI once it turns over. On the Suzuki DF25ATHSW2 for sale you still use a battery for the electric starter and the power trim, but if the battery dies you can pull start it and the injection will run.

In practice that means no carburettor to gum up when the boat sits for a month. No choke. Cold starts are quick. That alone saves our customers a lot of trouble.

Lean burn control

Suzuki’s lean burn system adjusts the fuel mixture to load. At cruise it runs leaner than an old carburetted 25. Owners of the Suzuki DF25ATHSW2 for sale generally tell us a tank lasts noticeably longer than on the two strokes and carb four strokes they had before. How much depends on hull, load and throttle hand.

Three cylinders at 25 HP

Many 25s are twins. The Suzuki DF25ATHSW2 for sale has three cylinders. You feel it at idle and trolling speed: less shake through the tiller and a smoother pull. Quiet, too. Customers comment on that more than anything.

Power trim and tilt

On the Suzuki DF25ATHSW2 for sale the trim button is on the bottom cowl and the tiller. You can trim on the move and tilt fully up at the dock or for trailering. There is a shallow water drive setting so you can run slowly with the motor partly tilted over sand bars and weed.

Small things that help

• Low oil pressure warning and over-rev limiter to protect the engine.
• Freshwater flush port so you can rinse without muffs.
• Front mounted gear shift lever on the tiller side.
• Suzuki anti-corrosion system for the lower unit and mid section.
• Through hub exhaust, which keeps it quiet and the fumes down.

What you need besides the Suzuki DF25ATHSW2 for sale

A tiller motor is the simplest outboard to rig. That is a big part of why people buy the Suzuki DF25ATHSW2 for sale. Still, there are a few things to plan for before the crate arrives.

• Battery. A 12V marine starting battery. Something in the 500 to 650 MCA range is plenty for this motor. Mount it in a box, strapped down, close to the motor so the cables stay short.
• Fuel tank and line. The motor runs from an external portable tank. A 6 gallon (about 24 L) tank is typical. Use a Suzuki style connector or a line with the correct fitting, and a primer bulb.
• Prop. The spec sheet lists a 3 blade 10.25 x 11 aluminium prop. On a light jon boat you may want more pitch. On a heavy work skiff you may want less. Your target is the 5,000 to 6,000 rpm range at full throttle with a normal load.
• Transom bolts. Clamp screws hold it, but we always tell people to through bolt it as well. A 163 lb motor that walks off a transom is an expensive lesson.
• Kill cord. Use it. It is there for a reason.

There are no remote controls, cables or wheel to buy with the Suzuki DF25ATHSW2 for sale. If you want genuine extras like covers, props or flush kits, Suzuki lists them on its genuine parts and accessories page.

How to measure your transom for a short shaft

Get this right before you order the Suzuki DF25ATHSW2 for sale. It is the most common mistake we see.

1. Find the centre of the transom.
2. Measure straight down from the top of the transom to the bottom of the hull, following the line of the transom.
3. If it reads around 15 inches, the short shaft Suzuki DF25ATHSW2 for sale is right. If it reads around 20 inches, you need a long shaft.
4. When the motor is mounted, the anti-ventilation plate should sit level with the bottom of the hull or up to about an inch above it.

If the measurement falls between sizes, send us a photo with the tape in the picture. We look at those every week and will tell you straight which shaft fits.

Break-in for your new 25 HP Suzuki

The first ten hours on a new Suzuki DF25ATHSW2 for sale matter. Follow the owner’s manual, but this is how it usually goes:

• First 2 hours: mostly at low speed. Brief runs to plane are fine but keep under about half throttle. Vary the rpm.
• Next 1 hour: up to about three quarter throttle, still varying speed.
• Up to 10 hours: full throttle in short bursts is allowed, then back off. Do not hold one speed for long periods.

After break-in, the first service on the Suzuki DF25ATHSW2 for sale is due. Change the engine oil and filter and the gear oil, and have the motor looked over. Any dealer or decent outboard mechanic can do it.

Maintenance schedule

A DF25A is not a fussy motor. The ones that give trouble are the ones that get ignored. Here is a plain schedule that works for most owners of the Suzuki DF25ATHSW2 for sale:

Use Suzuki oil or a quality 10W-30 or 10W-40 four stroke marine oil. Use fresh fuel. Ethanol blended fuel that sits for months is the root of more problems than anything mechanical.

Salt water care

The Suzuki DF25ATHSW2 for sale is rated for salt water and has Suzuki’s anti-corrosion protection, but salt still wins if you leave it alone. A few habits keep it looking white and working right:

• Flush through the freshwater port after every salt trip. Ten minutes is enough.
• Rinse the outside, including under the cowl edge and around the trim unit.
• Tilt it up when moored so the lower unit is out of the water.
• Check the anodes. When they are half gone, replace them. Do not paint them.
• Spray the powerhead lightly with a corrosion inhibitor every couple of months.
• Grease the tilt tube and swivel bracket fittings.

Common issues and easy fixes

Most of the calls we get about the Suzuki DF25ATHSW2 for sale and its sister models come down to a handful of things. None of them are design faults.

Hard starting after storage

On a Suzuki DF25ATHSW2 for sale that sat all winter, it is usually old fuel or a fuel line not primed. Squeeze the bulb until firm, check the vent on the tank is open, and use fresh fuel. If it sat a long time, change the fuel filter.

Weak tell-tale stream

Often just a blocked tell-tale. Poke a bit of wire into it. If it stays weak, the impeller is due. Do not run it hot.

Power trim not moving

Check the battery on the Suzuki DF25ATHSW2 for sale first. Then the trim fluid level and the connections. A weak battery is the cause nine times out of ten.

Over-rev or under-rev

If the Suzuki DF25ATHSW2 for sale over-revs or labours, it has the wrong prop for the load. If you hit the rev limiter, go up in pitch. If you cannot reach 5,000 rpm, go down. A tachometer or a phone app helps.

If you are stuck, contact us. We are happy to talk anyone through a problem on a Suzuki DF25ATHSW2 for sale they bought from us.

Running costs and fuel use

People ask what the Suzuki DF25ATHSW2 for sale costs to run. Fuel is the main cost. At a relaxed cruise on a light boat, a 25 HP EFI four stroke uses a few litres an hour. At wide open throttle it uses a good deal more. Trolling, it sips. Most owners find a 6 gallon tank covers a full day of fishing with fuel to spare.

Servicing is the other cost. Oil, a filter, gear oil and plugs once a year are cheap parts. The impeller every couple of seasons is a small job. Compared with an old two stroke you also stop buying two stroke oil, and you stop cleaning carbs.

One more thing we tell buyers of the Suzuki DF25ATHSW2 for sale: keep a spare prop, a spare kill cord and a spare set of plugs in the boat. Those three things end more trips early than any fault in the motor itself.

Living with it day to day

On the water the tiller is light. Friction on the steering can be adjusted so it holds a line if you let go to handle a rod or a line. Shift is in front, throttle twist is on the grip. Within a trip or two it feels normal.

At the ramp, power tilt is the part owners of the Suzuki DF25ATHSW2 for sale like most. Tilt up, back the trailer in, float off, tilt down, start. No reaching over the transom to wrestle the motor up.

Trailering, use a transom saver or the tilt support. Bouncing down a rough road with the full weight hanging on the trim rams is not good for them.

Storage over winter is simple. Run it on stabilised fuel, change the oil, grease it, and keep the Suzuki DF25ATHSW2 for sale upright or as the manual shows. Come spring, it starts.

How the Suzuki DF25ATHSW2 for sale compares

Our 25 HP Suzuki page lists every version, but here are the neighbours people usually compare against:

• Suzuki DF25ATHS2: the same tiller, short shaft and power trim motor in the standard dark finish.
• Suzuki DF25ATHLW2: white tiller with power trim on a 20 inch long shaft for taller transoms.
• Suzuki DF25ATHSW5: the later suffix listing in the same configuration. Ask which is in stock.
• Suzuki DF25AS2: the basic manual start, manual tilt short shaft tiller if you want the lightest and cheapest 25.
• Suzuki DF20ATHLW2: one size down, white tiller with power trim, long shaft.
• Suzuki DF30ATHLW2: one size up at 30 HP on the same block, for heavier boats.

The DF20A, DF25A and DF30A share the same basic 490 cc three cylinder. The 20 is tuned down and the 30 is tuned up. If your boat is rated for 30 HP and you often run heavy, the 30 is worth a look. If you are fine with 25, the Suzuki DF25ATHSW2 for sale is a sensible middle choice and fits many boats with a 25 HP limit.

Buying the Suzuki DF25ATHSW2 for sale from us

We sell new outboards and ship worldwide. Every Suzuki DF25ATHSW2 for sale we send out is new, never run, and still in the original Suzuki crate. The price shown on the page is the price of the motor. Shipping is quoted separately because it depends on where it is going.

Here is how an order for the Suzuki DF25ATHSW2 for sale usually works:

1. You contact us with the model, your country and city or nearest port.
2. We confirm stock and send you a written delivery quote, by air or sea, before you pay anything.
3. You approve the quote and pay.
4. We crate, label and ship, then send you tracking and paperwork.

You can read about the shop on our about page, see what other buyers say on our reviews page, and check the refund and return policy and terms and conditions before ordering.

Warranty

Suzuki factory warranty applies to the Suzuki DF25ATHSW2 for sale here. The length and terms depend on the region where the motor is registered and used, and on whether it is for recreational or commercial work. We tell you what applies to your country when we send the quote. Keep the paperwork and have services done on time so the cover stays valid. More on Suzuki’s worldwide marine business is on Global Suzuki Marine.

What is in the crate

• The DF25ATHSW2 powerhead, mid section and lower unit, fully assembled
• Tiller handle fitted
• Owner’s manual and warranty paperwork
• Basic tool kit and spare kill cord clip, as Suzuki supplies
• Propeller as listed on the spec sheet (we confirm this with you in the quote)

The battery, fuel tank and engine oil top up are not normally included, though we can quote them with the Suzuki DF25ATHSW2 for sale if you ask. Check the oil level before the first start. Some motors ship with oil, some do not, and it depends on shipping rules.

Checklist before you order

• Transom measured at about 15 inches for the Suzuki DF25ATHSW2 for sale.
• Boat capacity plate allows at least 25 HP and the motor weight.
• You want tiller steering, not remote.
• You have, or will buy, a 12V starting battery.
• Fuel tank and line ready.
• White finish is what you want. If not, ask about the dark version.
• Delivery address or port confirmed with us.

Suzuki DF25ATHSW2 for sale FAQ

Is the Suzuki DF25ATHSW2 for sale new?

Yes. Every Suzuki DF25ATHSW2 for sale we ship is new, never run, in the factory crate with Suzuki paperwork.

Can I pull start it if the battery is flat?

Yes. The Suzuki DF25ATHSW2 for sale has a manual backup. Because the EFI is battery-less, the motor will run once started by hand. You just will not have power trim until the battery is charged.

Does it need a battery at all?

For the electric start and power trim, yes. The fuel injection itself does not need one to run. The 14A alternator will charge the battery while you go.

How fast will it go?

Top speed of the Suzuki DF25ATHSW2 for sale depends on the hull and load. On a light 12 to 14 foot jon boat with one person, mid 20s mph is normal. Heavier boats will be slower. We would rather not promise a number we cannot see.

Do you ship to my country?

We ship worldwide. Send us your city or nearest port and we will quote delivery before you pay.

What is the difference from the DF25ATHS2?

Only the colour. The Suzuki DF25ATHSW2 for sale is white. The DF25ATHS2 is the standard dark finish.

Can I fit it to an inflatable?

Yes, the Suzuki DF25ATHSW2 for sale suits an inflatable if it is rated for 25 HP and the transom is short shaft height. Many larger RIBs need a long shaft, so measure first.

Order your Suzuki DF25ATHSW2 for sale

If this is the motor for your boat, send us a message through the contact page with your location and we will get a delivery quote back to you. You can also browse the 25 HP Suzuki range, all Suzuki outboards, the full shop, or read rigging tips on our blog. We answer quickly and we do not push. Tell us what boat you have and we will tell you honestly if the Suzuki DF25ATHSW2 for sale fits it.