John Deere 66SV Twin Cylinder Chainsaw Pics, History, Specs

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The vintage John Deere 66SV Chainsaw is the kind of saw that makes collectors grin before they even pull the starter rope.

At first glance, it looks like any other oddball from the chainsaw glory days. Then you learn what makes it unique: this thing is a twin-cylinder chainsaw. That’s not a gimmick, but a genuine two-cylinder setup that helped make the 66SV one of the most unusual production saws.

The 66SV was built for John Deere by Echo and corresponds to the Echo CST-610EVL, which instantly gives it crossover appeal with both Deere fans and vintage Echo hunters.

John Deere 66SV for sale

The great example pictured in this article is for sale on eBay in March 2026 with seller ‘chainsawfun’.

Here’s how it’s described:

Vintage John Deere 66sv Twin 2 Cylinder Chainsaw Run Gr8 Super Smooth

Great running john deere 66sv collectors chainsaw =cst-610-evl chainsaw. True serious collectors chainsaw. Some cosmetic defects so look closely at pictures and missing a front rubber cover over spark plug.

Smoothest balanced feel vibration wise you will ever feel in your hands unless some company makes one like this again. Fully serviced dressed bar painted and decaled and new oregon lgx full chisel chain.

Please scrutinize all pictures of both sides of the items and other defects for making your own opinions of the condition for you to purchase, no regrets no returns, non paying bidders will be reported to ebay.

It’s priced at US $1,099.00.

The twin cylinder layout is the reason this saw has such a following. The Echo version is listed at 61.0 cc, and collectors describe it as an opposed twin, basically the chainsaw equivalent of a tiny boxer engine.

To run it, it’s far smoother than most people expect from a vintage saw. Owners and collectors repeatedly talk about how impressively smooth these twins run, with users comparing the feel to an electric saw and others praising the low vibration in the cut, especially compared to other saws of the same era.

The history is part of the charm too. The Echo CST-610EVL was introduced in 1986, and John Deere technical manual listings dated April 1986 line up nicely with the idea that the 66SV belongs squarely to the mid-1980s period when manufacturers were still willing to try bold ideas.

Discussions suggest the John Deere branded version was sold in the mid 1980s, with one longtime owner stating 1985 through 1987.

Whether you pin it to one exact year or the broader mid-1980s window, the 66SV came from a time when chainsaw makers still believed that engineering spectacle could help sell a saw. Frankly, they were right!

Of course, a saw can be fascinating and impractical at the same time. That is part of the fun. The 66SV was supplied with bars ranging from 16″ up to 27″, and enthusiasts often describe it as torquey, smooth, and capable, but not exactly featherweight.

One owner called it the smoothest-running saw he had ever owned, then immediately complained that the weight was atrocious and that it drank fuel like there was no tomorrow. Another collector said it had old school 61cc power but weighed as much as a much larger saw.

That combination gives the 66SV real character. It is not the saw you buy because it makes the most practical sense. It is the saw you buy because it makes absolutely unforgettable sense.

Then there is the collectibility, which is where the John Deere 66SV really starts flexing. Collectors flatly describe it as quite collectable, and clean examples do bring real attention.

Forum sales and listings have shown prices around $599 to $600 for strong examples, older owner commentary mentioned values around $800, and this current eBay listing is asking $1,099 for a clean running saw.

Asking prices are not the same as sold prices, of course, but they do say something: the market knows this is not just another old chainsaw.

Rarity, condition, originality, and whether the notorious rear handle base is cracked all play a big role in value. On these saws, intact cosmetics and Deere specific details matter almost as much as whether it barks to life.

In the end, the John Deere 66SV is collectible for the best possible reason. It is memorable. Plenty of vintage saws are old. Plenty are powerful. Only a few make people stop, squint, smile, and say, “Wait, is that a twin cylinder John Deere?”

The 66SV does exactly that. It is a conversation piece, a mechanical curiosity, and a genuinely desirable collector saw all wrapped into one gloriously yellow package. For chainsaw enthusiasts, that is the sweet spot.

Specifications

SpecificationDetails
ModelJohn Deere 66SV
ManufacturerBuilt for John Deere by ECHO, same basic saw as the Echo CST-610EVL
TypeOne-man gasoline chainsaw
Year introducedMid 1980s, generally associated with 1986
Engine displacement61.0 cc, or 3.72 cu in
Engine typeAir-cooled, 2-stroke, twin-cylinder gasoline engine
Cylinder layoutHorizontally opposed twin-cylinder layout
Cylinder bore36 mm, or 1.417 in
Piston stroke30 mm, or 1.181 in
Piston rings2 rings
Cylinder materialAluminum with chrome-plated bore
Intake systemReed valves
Advertised horsepowerNot commonly listed in collector references
Weight6.9 kg, or 15.2 lb, powerhead only
Dimensions418 x 258 x 299 mm, or 16.5 x 10.2 x 11.9 in
Handle systemAnti-vibration
ClutchCentrifugal
Drive typeDirect drive
ConstructionDie-cast magnesium
IgnitionCD electronic ignition, also described as CDI flywheel magneto
CarburetorWalbro HDA diaphragm carburetor
Air filter systemFlocked wire screen element
StarterAutomatic rewind recoil starter
Oiling systemAutomatic worm-gear-driven oiler with manual override
Flywheel coil air gap0.3 mm, or 0.012 in
Spark plug typeNGK BPM7A or Champion CJ6Y
Spark plug gap0.63 mm, or 0.025 in
Main bearingsBall bearings
Fuel tank capacity610 ml, or 20.6 fl oz, also listed as 0.61 L
Chain oil tank capacity0.30 L, or 10.2 fl oz
Fuel mix ratioCommonly listed as 25:1, though some later references mention 32:1 or 50:1 with special oil
Recommended fuel octane89 octane regular automotive fuel
Mix oil specificationEcho two-cycle oil, ISO-L-EDG, JASO M345/FD
Chain pitch3/8 in
Chain typeOregon 72
Bar length16 in/40 cm – 27 in/68 cm

These next images are of another good example, which is not for sale. They come from a 2016 ArboristSite listing where the saw sold for around $600.

twin cylinder chainsaw
Images: Arborist Site user ‘blsnelling’

Next, check out these old John Deere Chainsaw ads!

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