Jonsered 50C, 70C manual Throttle lock, Chain catcher, Right hand guard, Vibration damping system

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SAFETY INSTRUCTIONS

•During felling your left hand grasps the front handle in such a way that it cannot activate the chain brake. In this position, i.e. when your left hand is in such a position that it cannot affect the movement of the front hand guard, the chain brake can only be activated by the inertia of the counterweight.

•The inertia activated chain brake is a valuable feature but there are certain factors to remember (see point above).

Throttle lock

The throttle lock is designed to prevent accidental operation of the throttle control. When you press the lock (A) (i.e. when you grasp the handle) it releases the throttle control (B).

When you release the handle the throttle control and the throttle lock both move back to their original positions. This movement is controlled by two independent return springs. This arrangement means that the throttle control is automatically locked at the idle setting.

Chain catcher

The chain catcher is designed to catch the chain if it snaps or jumps off. This should not happen if the chain is properly tensioned (see instructions under the heading Assembly) and if the bar and chain are properly serviced and maintained (see instructions under the heading General working instructions).

Right hand guard

Apart from protecting your hand if the chain jumps or snaps, the right hand guard stops branches and twigs from interfering with your grip on the rear handle.

Vibration damping system

Your machine is equipped with a vibration damping system that is designed to minimize vibration and make operation easier.

When you use a chain saw, vibration is generated by the uneven contact between the chain and the wood you are cutting.

Cutting hardwoods (most broadleaf trees) creates more vibration than cutting softwoods (most conifers). Cutting with cutting equipment that is blunt or faulty (wrong type or badly sharpened) will increase the vibration level. See instructions under the heading Cutting equipment.

The machine′s vibration damping system reduces the transfer of vibration between the engine unit/cutting equipment and the machine′s handle unit. The body of the chain saw, including the cutting equipment, is insulated from the handles by vibration damping units.

WARNING! Overexposure to vibration can

!lead to circulatory damage or nerve damage in people who have impaired circulation. Contact your doctor if you experience symptoms of overexposure to vibration. Such symptoms include numbness, loss of feeling, tingling, pricking, pain, loss of strength, changes in skin colour or condition. These symptoms normally appear in the fingers, hands or wrists. The risk increases at low temperatures.

Stop switch

Use the stop switch to switch off the engine.

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Contents Operator’s manual EPA Key to symbols KEY to SymbolsContents EPA Machine′s safety equipment Safety InstructionsPersonal protective equipment Chain brake and front hand guard Right hand guard Stop switchThrottle lock Chain catcherChecking the inertia brake release MufflerChecking brake band wear Checking the front hand guardRight hand guard Stop switchThrottle lock Chain catcherMuffler Cutting equipmentGeneral rules Cutting equipment designed to minimise kickbackGeneral information on sharpening cutting teeth Sharpening your chain and adjusting raker clearanceChain Some terms that describe the bar and chainSharpening cutting teeth General advice on setting raker clearanceCause serious or even fatal injury Setting the raker clearanceTensioning the chain If the raker clearance is too largeLubricating cutting equipment Chain drive sprocket How to avoid kickbackWhat is kickback? Checking wear on cutting equipmentDo not let go of the handles Starting General safety precautionsTransport and storage Fuel safetyBasic safety rules General working instructionsGeneral Basic cutting techniqueTerms Limbing CuttingClearing the trunk and preparing your retreat Tree felling techniqueSafe distance Felling directionFelling cut Freeing a trapped tree General adviceFreeing a tree that has fallen badly Cutting the trunk into logsWhat is what on the chain saw? What is WHAT?Fitting the bar and chain AssemblyFuel Fuel HandlingChain oil Fuelling Warm engine Starting and StoppingStarting and stopping Cold engineStopping Carburettor MaintenanceTensioning the recoil spring Correctly adjusted carburettorStarter Changing a broken or worn starter cordFitting the starter Air filterSpark plug MufflerNeedle bearing lubrication Adjustment of the oil pumpCentrifugal cleaning Turbo When making adjustmentsCanada Heated handlesElectrical carburettor heating Winter useMonthly maintenance Daily maintenance Weekly maintenanceBelow you will find some general maintenance instructions Technical data Technical DataCS 2171/WH 058/1,5mm Bar ChainLength, inches Pitch, inch Max nose radius 050/1,3 mmYour Warranty Rights and Obligations Federal Emission Control Warranty StatementPage 1088917-95

50C, 70C specifications

The Jonsered 70C and 50C chainsaws represent a pinnacle of craftsmanship and engineering excellence in the world of power tools. Designed for both professional and avid DIY enthusiasts, these models offer a blend of power, performance, and user-friendly features that elevate the cutting experience.

At the heart of both the Jonsered 70C and 50C is their powerful engine output. The 70C boasts a robust 70cc engine, delivering high torque and efficiency for demanding tasks, while the 50C is equipped with a nimble 50cc engine, perfect for lighter, more agile cutting projects. This versatility makes the chainsaws suitable for a wide range of activities, from felling trees to limbing and pruning, ensuring that they cater to varying user requirements.

One notable feature of the Jonsered 70C and 50C is their advanced air filtration systems. These systems are designed to enhance the longevity of the chainsaw's engine by preventing dust and debris from entering the combustion area. This means less maintenance and more time spent operating the chainsaw, making it an ideal choice for both professional lumberjacks and casual users.

Ergonomically designed, the handle of both models offers excellent grip and comfort, reducing user fatigue during extended use. The lightweight construction of the saws enables effortless maneuverability and control, allowing users to execute precise cuts without strain. Additionally, the quick and easy chain tensioning system facilitates fast adjustments, ensuring that the chain remains in optimal condition for continuous cutting.

Safety features are paramount in the design of the Jonsered 70C and 50C. Each model incorporates a chain brake and throttle lock to enhance user safety while operating, minimizing risks associated with kickback and accidental starts. The designs also emphasize low vibration, which further protects the user's hands and arms from fatigue, promoting a safer and more enjoyable cutting experience.

With their blend of power, efficiency, and advanced technology, the Jonsered 70C and 50C chainsaws are exceptional tools for anyone seeking reliability and performance in the field. Whether for professional logging or home landscaping, these chainsaws embody the quality and innovation expected from the Jonsered brand.
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