• Full-time forestry use
  • Part-time forestry use
  • Occasional use/firewood
  • More options
  • CS 2238

    CS 2238

    38 cc, 2 hp, 14"-16", 10.14 lbs

  • CS 2240

    CS 2240

    40.9 cc, 2.5 hp, 13"-18", 9.48 lbs

  • CS 2245

    CS 2245

    45.7 cc, 2.82 hp, 13"-18", 10.8 lbs

  • CS 2250 S

    CS 2250 S

    50.2 cc, 3.22 hp, 13"-18", 11.2 lbs

  • CS 2255

    CS 2255

    55.5 cc, 3.5 hp, 13"-20", 12.8 lbs

  • CS 2252

    CS 2252

    50.1 cc, 3.35 hp, 13"-20", 11.02 lbs

  • CS 2253

    CS 2253

    50.1 cc, 3.75 hp, 13"-20", 11.02 lbs

  • CS 2258

    CS 2258

    59.8 cc, 4.16 hp, 13"-20", 12.35 lbs

  • CS 2260

    CS 2260

    59.8 cc, 4.69 hp, 13"-20"

  • CS 2260

    CS 2260

    59.8 cc, 4.69 hp, 13"-20"

  • CS 2166

    CS 2166

    70.7 cc, 4.8 hp, 16"-28", 14.1 lbs

  • CS 2172

    CS 2172

    70.7 cc, 5.6 hp, 16"-28", 14.1 lbs

  • CS 2172 W

    CS 2172 W

    70.7 cc, 5.6 hp, 16"-28", 14.5 lbs

  • CS 2188

    CS 2188

    87.9 cc, 6.5 hp, 18"-28", 15.4 lbs

  • CS 2139 T

    CS 2139 T

    39 cc, 2.3 hp, 12"-16", 7.7 lbs

Show all products

70.7 cc, 4.8 hp, 16"-28", 14.1 lbs

Chainsaw CS 2166
Recommendation Chart
Full-time Forestry Use
Part-Time Forestry Use
Occational Use/Firewood
Not Recommended

A professional logging or arborist removal saw. Ruggedly designed with a magnesium crankcase to hold up to the demands of the work day. Built with Clean Power engine technology for up to 20% greater fuel efficiency, 75% reduced emissions, but more torque over a wider RPM range.

Chainsaws for professionals, landowners and homeowners

Full-time forestry use: Professional chainsaw models. Sustainable and reliable chainsaws with powerful engines, quick acceleration and a generous torque. Ergonomically designed for everyday use.

Part-time forestry use: Allround chainsaw models. Durable, easy to operate chainsaws with powerful engines, available in a number of sizes. Reliable machines built to handle many different jobs.

Occasional use/firewood: Homeowner chainsaw models. Flexible and durable chainsaws with balanced engine power that is easy to handle. Includes both electrically-powered saws and lightweight, petrol-powered chain saws.

(301) 972-1116


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  • Ulticor


    The most advanced machines designed for tough work and best performance.

  • Clean Power™

    Clean Power™

    The Clean Power™ engine design reduces harmful exhaust emissions by up to 75% and increases fuel efficiency by up to 20%.

  • Turbo


    Jonsered’s unique turbo intake air cleaning system removes up to 97% of the sawdust from the air before it even reaches the air filter.

  • Anti Vib

    Anti Vib

    Our system based on damping elements that provides one of the best vibration damping on the market.

  • Spin Start

    Spin Start

    Spin Start reduce the resistance in the starter cord by up to 40%.

Feature table for CS 2166
Magnesium crankcase
Magnesium crankcase
Side-mounted chain tensioner
Side-mounted chain tensioner
Adjustable flow oil pump
Adjustable flow oil pump
Inertia chain brake
Inertia chain brake
Engine specification
Cylinder displacement 70.7 cc
Power output 4.8 hp
Fuel tank volume 26.04 fl oz
Oil tank volume 0.8 US pint
Vibration & noise data
Equivalent vibration level (ahv, eq) front / rear handle 4/5.9 m/s²
Sound pressure level at operators ear 110 dB(A)
Sound power level, guaranteed (LWA) 119 dB(A)
Cutting equipment
Recommended bar length, min-max 16"-28"
Overall dimensions
Weight (excl. cutting equipment) 14.1 lbs
Part NumberDescription
966 44 24-09

Selected Accessories

  • Leather boots with saw protection, 20 m/s
JONSERED CS 2166 is rated 3.6667 out of 5 by 3.
Rated 5 out of 5 by from One of the best I've ever owned Once you figure out the trick to starting it (stops the flooding), it fires up in about 3 pulls on cold start, 1 pull warm start. I have a 24 inch bar and chain. Makes short work of some pretty big timber on my property. I clean my air filter every other gas fill and chain re-sharpening, usually at the end of the day. It's comfortable to handle in my hands, I'm short and have small hands. I use a few additives, stabil and anyone of the Ethenol gum solving products and cycle through for a few minutes to protect carb, lines, tank etc. the thing just runs. I recommend adjusting the carb for idle and start ups, mine used to flood until I got the carb adjusted. see the manual minimal fuel mix to begin with. adjust after starting. You won't have no more issues. This saw should be listed under full time forestry use, it has more than enough power and flexible bar lengths to get the job done. They should revisit this or clarify why this can't be used as full time forestry use. I rate this thing high because the issues I first had with it were operator error. This saw is fantastic. I would recommend to anyone. I had put a video on their FB page showing the saw running with torque and responsiveness of the trigger. I m rating it a 4 on value, due to it's price tag. I guess if this saw came with a choice in bar lengths that might make a difference, or perhaps a rip chain for use with the Alaskan Saw Mill III, which is what I primarily purchased the product for, making my own timber posts and true dimensional lumber.
Date published: 2015-02-02
Rated 4 out of 5 by from RUNS AWSOOM NOW, NEEDED RIGHT DEALER I TAKE BACK HALF of what i said that was negative, after comstockm logging tore it down and put new oil pump -brass line-none was warrenty that upset me BIG TIME,echo would had warenty, it starts better, dosent like to be chocked when cold pull 3 times on chock than push chock in and stars pretty good, but when it runs the power is great, i took down 25 trees today 24inch bar,now i have some faith in jonsred may buy the 2260 now, or 562 husky still up in air,
Date published: 2014-12-30
Rated 2 out of 5 by from lemmon from day one the first 3 days went to dealer becuse floods right away, now they fixed that 3 tanks of gas later bar oil pump went, its at comstock,[dolgville ny]so its in good hands and the mechanic told me he never seen anything like it, the worm gear was complettly gone,they have to put in grass line, new pump,ect, it looks like a pain in but job ,ill see hoe their warrenty is, i was thinking about the new 2260, very dissapointed,and i take care of my equipment,
Date published: 2014-12-11
  • 2015-06-25T07:55CST
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  • clientName_Jonsered

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