Jonsered 50C, 70C manual Daily maintenance Weekly maintenance, Monthly maintenance

Page 35

MAINTENANCE

Below you will find some general maintenance instructions.

Daily maintenance

Weekly maintenance

1

2

3

4

0,5 mm

 

1

4

2

5

3

6

5

6

7

8

7

8

9

1

Check that the vibration damping elements are not

 

damaged.

2

Lubricate the clutch drum bearing.

3

File off any burrs from the edges of the bar.

4

Clean the spark plug. Check that the electrode gap is 0.5

 

mm (0,020 inch).

1Check the throttle trigger for smooth operation. If any binding occurs or if engine fails to return to idle, the machine should be taken to your dealer, before it is used again. Also, be sure that the trigger cannot be pulled until the throttle trigger lockout is depressed.

2Clean the chain brake and check that it operates safely. Make sure that the chain catcher is undamaged, and replace it if necessary.

3Clean or replace the air filter as necessary. Check for damage or holes.

4The bar should be turned daily for more even wear. Check the lubrication hole in the bar, to be sure it is not clogged. Clean the bar groove. If the bar has a sprocket tip, this should be lubricated.

5Check that the bar and chain are getting sufficient oil.

6Sharpen the chain and check its tension and condition. Check the drive sprocket for excessive wear and replace if necessary.

7Clean the air intake on the starter. Check the starter and starter cord for wear or damage.

8Check that nuts and screws are tight.

9Test the stop switch to be sure it shuts off the engine.

5

Clean the fins on the flywheel. Check the starter and the

 

recoil spring.

6

Clean the cooling fins on the cylinder.

7

Clean or replace the spark arrestor mesh in the muffler.

8

Clean the carburettor compartment.

Monthly maintenance

1

2

3

4

 

 

 

8

5

6

7

9

 

 

 

 

1Check the brake band on the chain brake for wear.

2Check the clutch centre, clutch drum and clutch spring for wear.

3Clean the outside of the carburettor.

4Check fuel hose for cracks or other damage. Change if necessary.

5Clean the inside of the fuel tank.

6Clean the inside of the oil tank.

7Check all cables and connections.

8Change the spark plug.

9Change the air filter.

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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 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 instructionsTerms Basic cutting techniqueGeneral 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 AssemblyChain oil Fuel HandlingFuel Fuelling Warm engine Starting and StoppingStarting and stopping Cold engineStopping Carburettor MaintenanceTensioning the recoil spring Correctly adjusted carburettorStarter Changing a broken or worn starter cord Fitting the starter Air filter Spark plug MufflerNeedle bearing lubrication Adjustment of the oil pumpCentrifugal cleaning Turbo When making adjustmentsCanada Heated handlesElectrical carburettor heating Winter useBelow you will find some general maintenance instructions Daily maintenance Weekly maintenanceMonthly maintenance CS 2171/WH Technical DataTechnical data 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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