What Is Jonsered’s Largest Chainsaw? (Specs & CC)

The Jonsered 2100 CD is generally regarded as the brand’s largest commonly documented production chainsaw. Its engine displacement is about 99 cm³, or 6.0 cubic inches. It is a historical professional saw, not a current-production model. Before buying, restoring, or using one, verify the exact model and its approved bar, chain, fuel, and tuning specifications.

If you found “2100 CD” in a listing or manual, the quick answer is 99 cc. The important next step is confirming that the saw is truly a 2100 CD and that its parts match its manual. On an older saw, the parts fitted today may not be the original ones.

Which Jonsered chainsaw is the largest?

The 2100 CD is the largest commonly documented Jonsered production chainsaw. “Largest” here refers to engine displacement among documented production models, not to every prototype or market-specific version that may have existed. The model is discontinued, so current condition and parts fit matter as much as its original size.

Jonsered made several large chainsaws, which can make model comparisons confusing. A model number alone does not tell you its engine size, and similar-looking saws may differ. For the clearest identification, check the model marking and the specification plate, then compare them with the correct manual.

The 2100 CD’s approximately 99 cm³ engine is about 6.0 cubic inches. That figure is displacement: the combined volume moved by the engine’s piston during its cycle. It is not the saw’s cutting capacity, bar length, or a direct measure of how quickly it will cut.

What are the Jonsered 2100 CD’s key specifications?

The main published figure is 99 cm³ (about 6.0 cu in). Other practical specifications, such as bar length, chain pitch, and fuel mix, must be checked for the exact saw and its fitted parts. On an older machine, do not assume a specification from another 2100 CD applies to yours.

Displacement helps explain why the 2100 CD is considered a large saw. It does not, by itself, tell you which guide bar is safe or suitable. Nor does it show the condition of a decades-old engine. A worn saw may behave very differently from one that has been properly serviced.

I would treat the specification plate and manual as the starting point, not a seller’s description. If the plate is missing or the model is uncertain, have a qualified chainsaw technician identify the saw before ordering parts or changing its setup.

What bar and chain fit a 2100 CD?

The correct bar and chain are a matched set, not a choice based only on engine size. Bar length, chain pitch, and chain gauge must work with the saw’s sprocket and hardware. The manual for the exact saw should guide the choice; do not fit a longer bar simply because the engine is large.

“Pitch” is the spacing between the chain’s drive links, while “gauge” is the thickness of those links where they sit in the bar groove. Both must match the sprocket and bar. If one part is wrong, the chain may not fit or run as intended.

Illustrative fitment scenarios, not reports of specific owners:

• Existing bar and chain: Read their markings and check them against the manual and sprocket. Do not rely on appearance alone.
• Replacement parts: Confirm pitch, gauge, and bar compatibility before purchase. Ask a qualified parts supplier or technician if markings are unclear.
• Different cutting task: Choose a bar that is approved for the saw and suits the work and operator. A long bar is not automatically safer or more effective.

These checks matter because the wrong combination can create operating problems and increase risk. Set chain depth gauges, sometimes called rakers, to the chain maker’s specification. Their correct setting depends on the chain; there is no single safe clearance for every chain fitted to this saw.

Is the 2100 CD suitable for large timber?

The 2100 CD is a professional-size saw intended for demanding cutting, but displacement alone cannot establish that it is right for a job. Suitability also depends on the saw’s condition, approved cutting equipment, operator skill, and site hazards. Large-tree felling requires training and careful planning, not just a powerful engine.

Before cutting, assess the tree or log for lean, tension, overhead hazards, and a clear escape route. The wood may be under compression or tension, which can pinch the bar or cause a cut section to move. If you cannot judge those forces or plan the cut, stop and get trained help.

A large saw can be tiring to control. Match the bar to the task and your ability, keep a secure two-handed grip, and do not cut above shoulder height. Never force a dull chain through wood; stop and sharpen or replace it according to the chain maker’s instructions.

What are the main kickback risks?

Rotational kickback can happen when the upper part of the guide-bar nose hits wood or another object. The saw may then move rapidly back toward the operator. Keep the nose clear of objects where possible, maintain a firm two-handed grip, and make sure the chain brake works.

The chain brake is a safety device, not a substitute for sound technique. Inspect it before work and follow the manual’s test procedure. Wear chainsaw-rated head, eye, and hearing protection, leg protection, gloves, and boots. Follow applicable ANSI Z133 guidance and, where it applies to your work, OSHA 1910.266 requirements.

How should you start and operate a 2100 CD?

Use the exact manual’s cold- or warm-start steps and start the saw on stable ground. Follow its instructions for the chain brake, then confirm that the chain stops at idle and that oil reaches the chain before cutting. If the chain moves at idle or oiling is uncertain, stop and diagnose the issue.

Use the fuel type and fuel-oil ratio specified for the exact saw and approved oil. Do not assume a modern 50:1 mix applies to this older model. Do not use straight gasoline in a two-stroke engine. If the manual is unavailable, seek qualified help rather than guessing.

During cutting, maintain secure footing and two-handed control. Keep bystanders clear, and plan each cut for wood movement and bar pinching. Stop the engine before clearing debris or making adjustments. If the saw, chain brake, throttle lockout, chain catcher, handles, or oiling system appears faulty, do not use it until repaired.

How do you maintain and store a 2100 CD?

Regular checks help reveal problems before they become dangerous. Inspect chain tension, bar rails, fasteners, safety parts, air filter, and cooling surfaces. Follow the manual for service steps and intervals. Since this is an older model, a technician familiar with chainsaws can help assess wear and confirm that replacement parts are suitable.

Keep the chain sharp and set its depth gauges to the chain manufacturer’s instructions. Use suitable bar oil, and confirm that the saw delivers it to the chain. Do not assume one oil viscosity, oil-flow setting, or depth-gauge clearance suits every fitted bar and chain.

Do not adjust the carburetor by guesswork. Use the exact manual’s settings, including the specified maximum engine speed, and a suitable tachometer when a speed check is required. Incorrect tuning can harm the engine or affect safe operation.

After use, stop the engine and let hot parts cool. Clean the air filter and cooling surfaces as the manual directs, then inspect the bar, chain, and fasteners. Refuel only after cooling, in a ventilated area away from ignition sources. Follow the manual’s instructions for storage and any fuel remaining in the saw.

Frequently asked questions about Jonsered’s largest chainsaw

These quick answers focus on identifying the 2100 CD and checking its specifications. Because it is a discontinued model, details beyond the commonly published displacement may depend on the saw’s exact version and fitted parts. Verify those details in its manual rather than relying on a general listing.

What is Jonsered’s largest chainsaw?

The Jonsered 2100 CD is generally considered the brand’s largest commonly documented production chainsaw. It is a historical model, and “largest” does not claim to cover every prototype or regional variant. Confirm the model marking and specification plate when identifying an individual saw.

How many cc is a Jonsered 2100 CD?

The commonly published displacement is 99 cm³, or about 6.0 cubic inches. Check the model identification and specification plate, especially on an old saw that may have replacement parts. Displacement alone does not confirm its condition or approved cutting setup.

Is the Jonsered 2100 CD still made?

No. The 2100 CD is a historical, discontinued model, not a current-production chainsaw. A used example may have worn or changed parts, so verify its condition and specifications before operating it or buying replacement equipment.

What bar length fits the 2100 CD?

There is no safe universal answer without checking the exact manual and the saw’s fitted hardware. Bar length must suit the saw and task, while chain pitch and gauge must match the bar and sprocket. Do not infer bar length from displacement.

What chain pitch and gauge does it use?

Check the markings on the installed bar and sprocket, then confirm compatibility with the correct manual. Pitch and gauge must match the chain, bar, and sprocket. If you cannot identify those parts, ask a qualified technician or parts supplier before fitting a chain.

Can I use a 50:1 fuel mix?

Do not assume so. Use the fuel type and fuel-oil ratio specified in the manual for the exact 2100 CD and approved oil. If you cannot confirm the correct mix, avoid running the saw until you have reliable information.

Is the 2100 CD good for felling large trees?

It is a professional-size saw, but that does not make every large-tree job suitable. The tree, site, saw condition, cutting setup, and operator’s training all matter. Do not fell a large tree without the skills, planning, and controls the job requires.

What should I check before using a used 2100 CD?

Confirm the model, inspect its safety parts and cutting equipment, and verify the fuel and tuning specifications in the manual. Check that the chain stops at idle and that lubrication works. If the saw’s condition or setup is uncertain, have a qualified technician inspect it before use.

The key answer is straightforward: the 2100 CD is Jonsered’s largest commonly documented production chainsaw, at about 99 cm³. The safe next step is not choosing a long bar; it is verifying the saw’s identity, manual, condition, and matched cutting equipment.

(This article was written by one of our staff writers, Evan Bradley. Visit our Meet the Team page.)