Jonsered 50C, 70C manual General safety precautions, Starting

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SAFETY INSTRUCTIONS

8Follow the instructions on sharpening and maintaining your bar and chain. When you replace the bar and chain use only combinations that are recommended by us. See instructions under the headings Cutting equipment and Technical data.

WARNING! The risk of kickback is increased

!if you use the wrong cutting equipment or a chain that is not sharpened correctly. The wrong combination of bar and chain can increase the risk of kickback!

General safety precautions

•Chain saws are designed solely for cutting wood. The only accessories you may use with this engine unit are the combinations of bars and chains we recommend in the Technical data section.

•Never use the machine if you are tired, if you have drunk alcohol, or if you are taking medication that could affect your vision, your judgement or your co-ordination.

•Wear personal protective equipment. See instructions under the heading Personal protective equipment.

•Never use a machine that has been modified in any way from its original specification.

•Never use a machine that is faulty. Carry out the checks, maintenance and service instructions described in this manual. Some maintenance and service measures must be carried out by trained and qualified specialists. See instructions under the heading Maintenance.

•Never use any accessories other than those recommended in this manual. See instructions under the headings Cutting equipment and Technical data.

WARNING! The risk of accident is increased

!if you use the wrong cutting equipment or a chain that is not sharpened correctly. Using the wrong combination of bar and chain can increase the risk of accidents.

Before use:

,

1Check that the chain brake works correctly and is not damaged. See the instructions under the heading Checking the chain brake.

2Check that the rear right hand guard is not damaged.

3Check that the throttle lock works correctly and is not damaged.

4Check that the start and stop switch works correctly and is not damaged.

5Check that all handles are free from oil.

6Check that the anti vibration system works and is not damaged.

7Check that the muffler is securely attached and not damaged.

8Check that all parts of the chain saw are tightened correctly and that they are not damaged or missing.

9Check that the chain catcher is in place and not damaged.

Starting

WARNING! Long term inhalation of the

!engine’s exhaust fumes, chain oil mist and dust from sawdust can represent a health risk.

•Never start a chain saw unless the bar, chain and all covers are fitted correctly.

•The chain brake should be activated when starting (see section on “Starting”). Do not drop start. This method is very dangerous because you may lose control of the saw (see section on “Starting”).

•Never start a chain saw unless the bar, chain and clutch cover are fitted correctly. See instructions under the heading Assembly.

•Never start the machine indoors. Exhaust fumes can be dangerous if inhaled.

•Observe your surroundings and make sure that there is no risk of people or animals coming into contact with the cutting equipment.

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Contents Operator’s manual EPA Key to symbols KEY to SymbolsContents EPA Personal protective equipment Safety InstructionsMachine′s safety equipment Chain brake and front hand guard Throttle lock Stop switchChain catcher Right hand guardChecking brake band wear MufflerChecking the front hand guard Checking the inertia brake releaseThrottle lock Stop switchChain catcher Right hand guardGeneral rules Cutting equipmentCutting equipment designed to minimise kickback MufflerChain Sharpening your chain and adjusting raker clearanceSome terms that describe the bar and chain General information on sharpening cutting teethSharpening cutting teeth General advice on setting raker clearanceTensioning the chain Setting the raker clearanceIf the raker clearance is too large Cause serious or even fatal injuryLubricating cutting equipment What is kickback? How to avoid kickbackChecking wear on cutting equipment Chain drive sprocketDo not let go of the handles Starting General safety precautionsBasic safety rules Fuel safetyGeneral working instructions Transport and storageTerms Basic cutting techniqueGeneral Limbing CuttingSafe distance Tree felling techniqueFelling direction Clearing the trunk and preparing your retreatFelling cut Freeing a tree that has fallen badly General adviceCutting the trunk into logs Freeing a trapped treeWhat is what on the chain saw? What is WHAT?Fitting the bar and chain AssemblyChain oil Fuel HandlingFuel Fuelling Starting and stopping Starting and StoppingCold engine Warm engineStopping Carburettor MaintenanceStarter Correctly adjusted carburettorChanging a broken or worn starter cord Tensioning the recoil springSpark plug Air filterMuffler Fitting the starterCentrifugal cleaning Turbo Adjustment of the oil pumpWhen making adjustments Needle bearing lubricationElectrical carburettor heating Heated handlesWinter use CanadaBelow you will find some general maintenance instructions Daily maintenance Weekly maintenanceMonthly maintenance CS 2171/WH Technical DataTechnical data Length, inches Pitch, inch Max nose radius Bar Chain050/1,3 mm 058/1,5mmYour 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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