SUZUKI 40 HP DF40ATL2 OUTBOARD MOTOR

Description

This page covers the Suzuki DF40ATL2 for sale from our stock: a brand new 40 horsepower, three cylinder, four stroke outboard with a 20 inch long shaft, remote steering, electric start and power trim and tilt. It comes sealed in the Suzuki factory crate, the price is listed right here on the page, and we ship it worldwide.

We have sold and rigged a lot of these. Below is what we tell customers on the phone: what the code means, what boats it fits, the real specs, what else you need to buy, and how to look after it. If you are short on time, skip to the checklist near the end.

Suzuki DF40ATL2 for sale: what you are buying

The DF40A is Suzuki’s 40 HP model built on a 941 cc three cylinder block. The Suzuki DF40ATL2 for sale shares the same basic powerhead as the DF50A, tuned for 40 HP. That matters because you get a motor that is barely working at cruise, and that tends to mean long life.

The Suzuki DF40ATL2 for sale here is the remote control version. There is no tiller handle on it. You run it from a helm with a control box, a key switch and a steering cable, like any small center console or runabout.

The Suzuki DF40ATL2 for sale is a DOHC engine with 12 valves and a timing chain that runs in oil. There is no timing belt to change at a service interval. Fuel goes in through multi point sequential electronic fuel injection, so there is no carburetor to gum up when the boat sits over winter.

Decoding the model code

Suzuki codes look like alphabet soup until somebody explains them once. Here is how the Suzuki DF40ATL2 for sale breaks down, letter by letter:

• DF: Suzuki’s prefix for its four stroke outboards.
• 40: rated power, 40 HP at the prop shaft rating Suzuki publishes.
• A: the generation. The A models are the newer 941 cc design that replaced the older DF40.
• T: power trim and tilt.
• L: long shaft, for a 20 inch transom.
• 2: a version suffix Suzuki uses on its order codes. We list the spec sheet for this version below.

There is no W in the code, so this one comes in Suzuki’s standard Pearl Nebular Black paint. If you want the light grey (white) finish, that is the Suzuki DF40ATLW2. Mechanically the two are the same.

Some buyers come to us looking for the older DF40 without the A. That motor was a different, older design. The Suzuki DF40ATL2 for sale is the current A generation with the bigger 941 cc block, chain drive and lean burn. Parts for the two are not all shared, so quote the full code when you order spares.

Which boats suit the Suzuki DF40ATL2 for sale

Forty horsepower on a 229 lb motor is a sweet spot for a lot of small boats. Typical hulls we see this motor go on:

• 16 to 18 foot aluminum center consoles and side consoles
• Small fiberglass runabouts and bay boats with a 20 inch transom
• Jon boats and work skiffs that carry gear, nets or a couple of crew
• Small pontoons that only need to putter, though the DF50AV is better there
• Repower jobs where an old two stroke 40 or 50 is coming off

Always check the capacity plate on your boat first. If the plate says 40 HP max, the Suzuki DF40ATL2 for sale is the top of the range for that hull and it will feel strong. If the plate says 60 or 70 HP, think about whether you will want more power later, because adding horsepower after rigging costs more than doing it once.

Transom height for the Suzuki DF40ATL2 for sale must be close to 20 inches. A 15 inch transom needs a short shaft motor, and a 25 inch transom needs an extra long. Measuring is covered further down.

Suzuki DF40ATL2 for sale: full specifications

These figures come from Suzuki’s published data for the DF40A long shaft remote. Where a number varies with prop and load, we say so.

You can compare these with Suzuki’s own data on the Suzuki Marine outboard range pages. If anything on a dealer sheet disagrees with the decal on the motor, go by Suzuki.

Features that actually matter on this motor

Spec sheets list a dozen features. Here are the ones our customers notice after a season with the Suzuki DF40ATL2 for sale.

Lean Burn Control

Suzuki’s Lean Burn system leans the mixture at cruise when the motor is under light load. On a 16 foot boat running at 20 to 25 mph, that shows up as noticeably less fuel per trip compared with older carbureted 40s. How much you save depends on hull, load and how hard you push it, so we do not quote a fixed number.

Timing chain instead of a belt

On the Suzuki DF40ATL2 for sale the chain runs in engine oil. You do not change it at a set interval like a belt. As long as you keep fresh oil in the motor, the chain is a part you mostly forget about.

Troll Mode support

The DF40A works with Suzuki Troll Mode, which lets you adjust idle speed in small steps for slow trolling. It needs the Troll Mode switch or a compatible Suzuki gauge, which is an add on. Ask us when you order the Suzuki DF40ATL2 for sale and we can quote it in the same crate.

Easy Start and electric start

On the Suzuki DF40ATL2 for sale you turn the key once and let go. The ECU keeps cranking until the motor fires. It is a small thing, but it stops people from grinding the starter on a cold morning.

Power trim and tilt

The T in the code. You trim the bow up or down from the switch on the control handle, and tilt the motor clear of the water at the dock or on the trailer. On a 229 lb motor, this beats lifting by hand every time.

Warnings and protection

The Suzuki DF40ATL2 for sale has an over rev limiter, low oil pressure caution, and an overheat warning. When one trips, the ECU cuts rpm to protect the engine. A freshwater flushing port lets you rinse the cooling passages without running the engine.

Fuel use and running costs

People ask us how much fuel the Suzuki DF40ATL2 for sale will burn. The honest answer is it depends on hull, load and throttle. At idle and trolling speed, it sips. At a relaxed cruise in the mid 4,000 rpm range, a light aluminum boat uses far less than an old carbureted two stroke 40. Flat out, any 40 HP motor burns more.

A good habit is to run a fuel flow gauge, or a Suzuki multi function gauge, for the first few trips. You will find the rpm where the boat planes cleanly and fuel use drops. That is where the Suzuki DF40ATL2 for sale is happiest for long runs.

Running costs beyond fuel are low. Oil changes are small, there is no belt to replace, and the plugs and filters are common Suzuki parts that most marine shops carry.

Rigging: what you need besides the motor

A remote outboard is not a bolt on and go item. Here is what a typical install for the Suzuki DF40ATL2 for sale needs. Some boats already have parts of this, so check before you buy twice.

• Remote control box: a Suzuki side mount or binnacle control with trim switch.
• Main wiring harness from the control box to the motor, in the right length.
• Key switch panel if your control does not have one built in.
• Throttle and shift cables, measured from the control to the motor along the routing path, plus a little slack.
• Steering: a mechanical cable system sized for 40 HP is usual on boats this size.
• Gauges: at least a tachometer. A Suzuki multi function gauge gives rpm, trim, warnings and fuel data.
• Battery: a 12 V marine starting battery with the cranking rating listed in the owner’s manual, plus cables and a battery switch.
• Fuel: a fuel line with primer bulb, a water separating fuel filter, and a remote tank or built in tank.
• Propeller: chosen for your hull, covered next.

Genuine controls, harnesses and gauges are listed on Suzuki’s genuine parts and accessories page. We can supply most of these with your motor and ship everything together.

Picking the propeller

The goal is wide open throttle inside 5,000 to 6,000 rpm with your normal load. For many 16 foot aluminum boats that ends up somewhere around 11 to 13 inch pitch, but your hull may be different. If rpm is too low, drop pitch. If the motor bounces off the rev limiter, go up.

When you order the Suzuki DF40ATL2 for sale, send us the boat length, weight, typical load and what motor it had before. We will suggest a pitch to start with.

Measuring your transom for the shaft length

Before you order the Suzuki DF40ATL2 for sale, measure straight down the centerline of the transom, from the top where the motor clamps to the bottom of the hull. Do not measure along a slanted surface.

• About 15 inches: short shaft (S).
• About 20 inches: long shaft (L), this model.
• About 25 inches: extra long (X).

If you get 19 or 21 inches, the Suzuki DF40ATL2 for sale is still the right one. Final height is set by which bolt holes you use on the clamp bracket. The anti cavitation plate should end up level with, or slightly above, the bottom of the hull.

Break-in for the first 10 hours

A new motor needs a gentle first ten hours. Here is how we tell people to run in the Suzuki DF40ATL2 for sale. Your owner’s manual has the exact Suzuki numbers, so follow it if it differs.

1. First two hours: mostly at idle and low speed, under half throttle. Get it on plane briefly if needed, then back off.
2. Next hour: up to about three quarters throttle, short bursts only.
3. Remaining hours: vary rpm, short full throttle runs are fine, avoid long steady full throttle.
4. Do not hold one engine speed for a long time during break-in.
5. Check the oil level before every run.

After about 20 hours, book the first service. It is cheap and catches loose fittings and early problems.

Maintenance schedule

Suzuki publishes a full schedule in the owner’s manual. This is the short version we give buyers of the Suzuki DF40ATL2 for sale.

Use Suzuki 4 stroke marine oil in the grade the manual lists, and Suzuki outboard gear oil. The oil pan holds about 2.7 liters, so one oil change is not a big bill.

Salt water care

A lot of our motors go to coastal customers. The Suzuki DF40ATL2 for sale has Suzuki’s anti corrosion finish and sacrificial anodes, but salt still wins if you ignore it.

• Flush with fresh water after every salt run, using the flushing port.
• Rinse the outside of the motor and the bracket. Salt crust under the cowl causes most corrosion.
• Check anodes every couple of months. Replace when about half gone.
• Do not paint anodes. They stop working.
• Spray a corrosion inhibitor on the powerhead and connectors a few times a season.
• Trim the motor down when stored so water drains from the gearcase area.

Storing it over the off season

If your boat comes out of the water for winter, a little work in autumn saves you a no start in spring. This is what we do with a Suzuki DF40ATL2 for sale that is going into storage.

• Add fuel stabilizer to the tank and run the motor long enough to get treated fuel into the system.
• Flush with fresh water.
• Change the engine oil and gear oil so old acidic oil does not sit in the motor.
• Remove the battery, charge it, and store it somewhere cool and dry.
• Grease the fittings and spray the powerhead with inhibitor.
• Store the motor upright or trimmed down, never with the gearcase high.

Done this way, the Suzuki DF40ATL2 for sale usually starts on the first turn of the key next season.

Common issues and simple fixes

Most service calls on new 40s are not engine faults. They are rigging or fuel. Here is what we see with the Suzuki DF40ATL2 for sale and similar models.

Hard starting after storage

On a Suzuki DF40ATL2 for sale that sat all winter, the cause is usually stale fuel or water in the fuel. Drain the separator, use fresh fuel, and squeeze the primer bulb until firm. EFI is less fussy than a carb, but it still needs clean fuel.

Low top rpm

Wrong prop pitch, too much load, or motor mounted too low. Check the anti cavitation plate height before buying a new prop.

Weak telltale stream

Often a bug or salt crust in the outlet. Poke it clear with a piece of wire. If the stream stays weak and the warning sounds, check the impeller.

Trim not working

On the Suzuki DF40ATL2 for sale, check the battery voltage first, then the fuse and the trim relay connections. Low battery is the most common cause by far.

Warning buzzer

Do not ignore a warning on the Suzuki DF40ATL2 for sale. Shut down, check oil and water flow, then call us or a Suzuki dealer with the beep pattern.

How it compares with the neighbours

Buyers often ask whether to go up or down a size from the Suzuki DF40ATL2 for sale. Here is the honest view.

• Suzuki DF30ATL2: smaller 30 HP motor, lighter, fine for light aluminum hulls. On a loaded 16 foot boat it feels tired.
• Suzuki DF40ATLW2: identical motor in the light grey finish.
• Suzuki DF50ATL2: same 941 cc block and same weight, 10 HP more. If your boat is rated for 50, this is the one most people end up wishing they bought.
• Suzuki DF50AVTL2: 50 HP with a 2.42:1 gearcase for pontoons and heavy boats.
• Suzuki DF60ATL2: bigger 60 HP for 18 foot plus hulls that are rated for it.

You can see the whole range in our Suzuki 40 HP category and the full Suzuki outboards section.

Fitting it yourself or using a mechanic

A handy owner can fit the Suzuki DF40ATL2 for sale on a boat that already has controls and steering in place. Bolting it on, connecting the harness and fuel, and setting the height takes a day with a hoist and a helper.

On a bare boat with no controls or cables, we suggest a marine mechanic. Cable adjustment, harness routing and a proper test run matter, and a correct first install helps if you ever need a warranty claim. Keep the receipts and the pre delivery check sheet with the paperwork for your Suzuki DF40ATL2 for sale.

Buying the Suzuki DF40ATL2 for sale from us

We are an outboard shop that sells new motors and ships them worldwide, and the Suzuki DF40ATL2 for sale is one we keep moving all year. The process is simple.

1. Send us your country, city and nearest port or airport through the contact page.
2. We send a delivery quote before you pay anything. You see the motor price plus shipping, all in writing.
3. You confirm, pay, and we crate and ship.
4. You get tracking and the shipping documents.

The price for the Suzuki DF40ATL2 for sale is shown on this page. Shipping is quoted separately because it depends on where it is going and how fast you want it.

Warranty

Every motor is new and comes with the Suzuki factory warranty. The term depends on the region where the motor is registered and how it is used, recreational or commercial. We confirm the exact terms for your region before you buy. Read our refund and return policy and our terms and conditions as well.

What is in the crate

• The Suzuki DF40ATL2 for sale outboard, factory packed
• Owner’s manual and warranty paperwork
• Small tool kit and basic spares as supplied by Suzuki
• Mounting hardware where the factory includes it

Controls, harness, gauges, battery, fuel tank and propeller are separate items unless your quote lists them. Exact crate contents can vary by market, so we confirm before shipping.

Checklist before you order

• Transom height measured, about 20 inches
• Boat capacity plate allows 40 HP or more
• Transom solid, no rot or soft spots
• Controls and cables: reuse or new
• Steering system rated for 40 HP
• Battery and fuel system ready
• Prop pitch chosen, or ask us
• Delivery address and port confirmed
• Colour preference: black (this model) or grey (W model)

Tick these off and ordering the Suzuki DF40ATL2 for sale is quick. Read what other buyers say on our reviews page, or learn more about us.

FAQ about the Suzuki DF40ATL2 for sale

Is this motor new?

Yes. Every Suzuki DF40ATL2 for sale on our site is new, in the original factory crate, never run outside factory testing.

Can I convert it to a tiller?

Suzuki offers a tiller kit for the DF40A. It is an extra part and some labour. If you mainly want tiller steering, tell us and we can quote it.

Does it come with a propeller?

The Suzuki DF40ATL2 for sale usually ships without a prop as standard. We pick one with you based on your boat and include it on the quote.

How much does it weigh?

The Suzuki DF40ATL2 for sale weighs about 104 kg (229 lb) dry. Two people can lift it onto a stand with care, but a hoist is better.

What fuel does it need?

The Suzuki DF40ATL2 for sale runs on regular unleaded, minimum 87 AKI / 91 RON. Use fresh fuel and a water separating filter.

How long does shipping take?

It depends on destination and method. Sea freight takes longer and costs less, air is faster. Your quote shows both if you ask.

Can I see Suzuki’s own data?

Yes. Global Suzuki Marine has the international range. Our blog also has buying and rigging guides.

Order your Suzuki DF40ATL2 for sale today

If your boat needs a light, quiet, fuel injected 40 that will run for years, this is a good motor. Message us with your location and we will send a delivery quote for the Suzuki DF40ATL2 for sale. You can also browse the shop for controls and other motors.