There is a specific kind of nostalgia that hits you when you see that iconic red and black livery. If you’ve been in the tree-care game as long as I have—going on fifteen years now—you know that Jonsered isn’t just “another brand.” For decades, it was the sophisticated, slightly more ergonomic Swedish cousin to Husqvarna. When the Jonsered 2240 hit the market, it was positioned as the ultimate “prosumer” saw: a tool designed for the landowner who treats their woodlot like a professional job site.

I’ve spent the last month putting a 2240 through its paces on a tract of mixed hardwood in the Pacific Northwest. I’ve bucked frozen maple, limbed downed firs, and even took it through some bore-cutting exercises to see if the chassis could handle the torque. The Jonsered 2240 is, in many ways, the “Red Husqvarna” version of the Husqvarna 440, but that doesn’t tell the whole story. There are nuances in the handle geometry and the throttle response that make this saw its own beast entirely.

The Professional Breakdown: Jonsered 2240 Specs

Before we get into the grease and the sawdust, let’s look at how the 2240 stacks up against its primary rivals. This isn’t a “big box store” plastic toy; it’s a high-revving, stratified-charge machine.

ModelDisplacementPower OutputWeight (Powerhead)Tool-less Tensioning?Shop Link
Jonsered 224040.9 cc2.4 hp9.5 lbsYes (Often) 🛒 Check Price
Husqvarna 44040.9 cc2.4 hp9.7 lbsNo 🛒 Check Price
Echo CS-40040.2 cc2.5 hp10.1 lbsNo 🛒 Check Price
Husqvarna 43540.9 cc2.2 hp9.2 lbsNo 🛒 Check Price

Technical Engineering Deep-Dive: What’s Under the Hood?

To understand the 2240, you have to understand “Clean Power.” This is Jonsered’s branding for stratified scavenging technology (similar to Husqvarna’s X-Torq). In a traditional two-stroke, a portion of the fresh fuel-air mixture escapes through the exhaust port before the piston can close it. It’s wasteful and dirty. The 2240 uses a pulse of pure air to “sandwich” the exhaust gases out before the fuel charge enters the combustion chamber.

When I cracked the cylinder cover on this unit, I was impressed by the porting. The intake manifold is robust, and the carburetor is well-isolated from the engine vibrations, which prevents fuel frothing—a common issue in cheaper saws that causes “bogging” mid-cut.

Centrifugal Air Cleaning (Turbo)

One of Jonsered’s “Secret Sauces” is the Turbo air cleaning system. As the flywheel spins, centrifugal force flings the heavier dust and wood chips away from the air filter intake. I ran this saw for six hours straight in dry, dusty cedar, and when I pulled the filter, it was shockingly clean. This isn’t just a marketing gimmick; it significantly extends the interval between cleanings and maintains the air-to-fuel ratio even as you’re buried in chips.

The Magnesium Crankcase vs. Polymer

While the 2240 does utilize a high-impact polymer chassis to keep the weight down to a manageable 9.5 lbs, the internal crankcase geometry is designed for heat dissipation. One thing I noticed during a heavy bucking session—roughly 14-inch diameter oak—is that the saw doesn’t suffer from heat soak as quickly as the Husqvarna 120. The thermal management here is superior, likely due to the larger cooling fins on the cylinder head.

Real-World Performance: Into the Wood

Specs are one thing; the “snap” of the pull cord is another. The 2240 features “Spin Start,” which reduces the resistance in the starter cord by up to 40%. It’s a spring-assisted mechanism that feels a bit “soft” at first if you’re used to the violent yank of an old Stihl, but it saves your shoulder after a long day.

Limbing and Speed

In my testing, the 2240 excels at limbing. The power-to-weight ratio is the sweet spot for 2-inch to 6-inch branches. The saw is incredibly “flickable.” Because the center of gravity is tucked tight against the rear handle, you can pivot the bar through a canopy with surgical precision.

I timed several cuts on seasoned Douglas Fir. The chain speed at wide-open throttle (WOT) is impressive for a 40cc saw. It doesn’t have the raw, bone-crushing torque of the Echo CS-590 Timber Wolf, but it doesn’t try to. It’s a scalpel, not a sledgehammer.

Bucking Large Diameter

Truth be told, if you’re consistently buried in 18-inch logs, you’re going to find the 2240’s limits. During a session with some frozen White Oak, the 2.4 hp engine started to labor once the bar was fully buried. You have to let the saw do the work; if you dog it in and try to force it, the centrifugal clutch will start to complain. For a 40cc machine, it’s best paired with a 16-inch bar. While it can run an 18-inch, the balance feels slightly off, and the oiler struggles to keep the tip lubricated during extended cuts.

Ergonomics: The Jonsered “Feel”

There is a legendary design choice in Jonsered saws: the angled front handle. Most saws have a front handle that is relatively perpendicular to the chassis. Jonsered offsets theirs by a few degrees. This is meant to follow the natural anatomical angle of your wrist when you’re standing in a felling or bucking stance.

After four hours of work, I felt less “buzz” in my left palm compared to using a Husqvarna 445. The vibration dampening—utilizing heavy-duty steel springs rather than rubber bushings—is top-tier. Rubber bushings tend to degrade over time when exposed to bar oil and UV light; these springs are built to last the life of the saw.

The Snap-Lock Covers

Maintenance on the 2240 is a breeze. The cylinder cover is held on by three snap-locks. You don’t need a scrench to check your spark plug or clean your air filter. This is a “pro” feature that I wish more consumer saws adopted. However, I’ll be honest: the plastic on these clips feels a bit thin. In sub-zero temperatures, I’d be careful not to snap them with cold, gloved hands.

Historical Context: The Sunset of a Legend

It’s worth noting that Jonsered as a standalone brand has been largely integrated into Husqvarna’s primary line. This makes the 2240 a bit of a “heritage” saw. It represents the pinnacle of Jonsered’s consumer-grade engineering before the brands merged their aesthetics. Owning a 2240 today is like owning a classic Saab; it’s Swedish engineering with a specific flair that you just don’t get with the orange saws.

If you are choosing between this and the Husqvarna 435, the 2240 often feels like a more “finished” product. The materials feel slightly denser, and the throttle trigger has a more tactile, mechanical “click” to it.

Maintenance and Long-Term Serviceability

If you buy a 2240, you are entering an ecosystem with massive parts availability. Since it shares a significant percentage of its DNA with the Husqvarna 440 series, you will never struggle to find a replacement carburetor, ignition coil, or sprocket.

Field Note on the Oiler: The 2240 uses an automatic, fixed-flow oil pump. I’ve found that in extreme cold, you should run a thinner bar oil (winter grade). The pump doesn’t have an adjustment screw, which is one of my few gripes. If you’re running a long bar in hardwoods, you’ll want every drop of oil you can get.

Hardware Specs: The Raw Data

  • Displacement: 40.9 cmÂł / 2.5 cu.inch
  • Power Output: 1.8 kW / 2.41 hp
  • Maximum Power Speed: 9000 rpm
  • Fuel Tank Volume: 0.37 Liters / 0.78 US pint
  • Oil Tank Volume: 0.25 Liters / 0.53 US pint
  • Chain Pitch: .325”
  • Recommended Bar Length: 13” - 18”
  • Sound Pressure Level at Operator’s Ear: 102 dB(A)

Pros & Cons: The SAWOFF Edge

Pros

  • Weight Distribution: Perfectly balanced for limbing and light felling.
  • Clean Power Engine: Excellent fuel economy; you’ll get more cuts per tank than the Echo CS-352.
  • Turbo Filtration: Best-in-class air cleaning reduces downtime significantly.
  • Anti-Vibe: The steel spring system is far superior to cheap rubber mounts.
  • The “Spin Start”: Truly easy to start, even for those with shoulder issues.

Cons

  • Non-Adjustable Oiler: You’re at the mercy of the factory flow rate.
  • Chain Tensioner: The tool-less versions can sometimes be finicky; I prefer the traditional side-access bolt.
  • Brand Availability: Getting harder to find “new old stock” as the brand sunsets.

Final Verdict: Is the Jonsered 2240 Right for You?

If you are a suburban homeowner who needs to clear a downed limb once a year, this saw is overkill. You’d be better off with something like the Husqvarna 130.

However, if you have five or ten acres of woods, if you heat your home with a wood stove, or if you simply appreciate a tool that feels “commercial” despite its size, the Jonsered 2240 is a masterpiece of the 40cc class. It’s a saw that rewards a skilled operator with fast chain speeds and incredible ergonomics. It has enough “grunt” to handle a medium-sized felling job but is light enough to carry through the woods all day without needing a chiropractor the next morning.

SAWOFF Rating: 4.6 / 5

🛒 View the Jonsered 2240 on Amazon

Frequently Asked Questions (FAQ)

1. What is the correct fuel mix for the Jonsered 2240?

The Jonsered 2240 requires a 50:1 ratio of high-quality 89-octane (or higher) unleaded gasoline and 2-stroke air-cooled engine oil. I strongly recommend using ethanol-free fuel to prevent carburetor gumming, which is the #1 cause of death for these saws.

2. Can I use Husqvarna parts on my Jonsered 2240?

Yes. For most internal engine components, filters, and bars, parts for the Husqvarna 440 are interchangeable with the Jonsered 2240. Always double-check the part number, but the chassis and engine architecture are nearly identical.

3. Why does my 2240 die when I give it gas?

This is usually a sign of a clogged fuel filter or a carburetor that needs a slight adjustment. However, on these “Clean Power” engines, it can also be a sign of an air leak in the intake boot. Start by replacing the fuel filter and checking the spark arrestor screen in the muffler.

4. What size chain does the Jonsered 2240 take?

Most 2240s are set up with a .325” pitch chain with a .050” gauge. Make sure your replacement chain matches the drive link count of your specific bar (usually 62 or 66 links for a 16-inch or 18-inch bar).

5. Is the 2240 a professional-grade saw?

It is categorized as a “Landowner” or “Prosumer” saw. While it features many professional elements (like the Turbo air cleaning and superior anti-vibe), it lacks the full magnesium crankcase found in true pro saws like the Husqvarna 550XP. It’s designed for frequent, but not daily, 8-hour use.

6. How do I adjust the chain tension?

Depending on your specific sub-model, you either have a side-access screw (requires a scrench) or a tool-less tensioning knob. If you have the knob, flip the handle out, loosen the side cover slightly, turn the adjustment dial until the chain is snug against the bar but can still be pulled by hand, and then lock the cover back down.

7. Why is my Jonsered 2240 leaking bar oil when it’s sitting?

Most chainsaws leak a small amount of oil due to pressure changes in the tank. However, if it’s a puddle, the oil line may have shrunk or become disconnected from the pump. Store the saw on its side or on a piece of cardboard to manage the common “seepage” that occurs as the bar and chain cool down.