Jonsered 50C, 70C manual Contents

Page 3

CONTENTS

Contents

 

KEY TO SYMBOLS

 

Key to symbols

2

CONTENTS

 

Contents

3

Before using a new chain saw

3

SAFETY INSTRUCTIONS

 

Personal protective equipment

5

Machine′s safety equipment

5

Checking, maintaining and servicing the machine′s

 

safety equipment

8

Cutting equipment

10

How to avoid kickback

15

General safety precautions

17

General working instructions

18

WHAT IS WHAT?

 

What is what on the chain saw?

24

ASSEMBLY

 

Fitting the bar and chain

25

FUEL HANDLING

 

Fuel

26

Chain oil

26

Fuelling

27

STARTING AND STOPPING

 

Starting and stopping

28

MAINTENANCE

 

Carburettor

30

Starter

31

Air filter

32

Spark plug

32

Muffler

32

Needle bearing lubrication

33

Adjustment of the oil pump

33

Cooling system

33

Centrifugal cleaning “Turbo”

33

Heated handles

34

Electrical carburettor heating

34

Winter use

34

Daily maintenance

35

Weekly maintenance

35

Monthly maintenance

35

TECHNICAL DATA

 

Technical data

36

FEDERAL EMISSION CONTROL WARRANTY

 

STATEMENT

 

YOUR WARRANTY RIGHTS AND OBLIGATIONS

38

Before using a new chain saw

•Please read the operator’s manual carefully and make sure you understand the instructions before using the machine.

•Check that the cutting equipment is correctly fitted and adjusted. See instructions under the heading Assembly.

•Refuel, start the chain saw and check the carburettor settings. See the instructions under the headings Fuel Handling, Starting and Stopping, and Carburettor.

•Do not use the chain saw until sufficient chain oil has reached the chain. See instructions under the heading Lubricating cutting equipment.

IMPORTANT! If the carburettor mixture is too lean it greatly increases the risk of engine failure. Poor maintenance of the air filter will cause carbon build-up on the spark plug and lead to starting difficulties. If the chain is improperly adjusted it will cause increased wear or damage to the bar, drive sprocket and chain.

Maintenance, replacement, or repair of the emission control devices and system may be performed by any nonroad engine repair establishment or individual.

WARNING! Under no circumstances may the

!design of the machine be modified without the permission of the manufacturer. Always use genuine accessories. Non-authorized modifications and/or accessories can result in serious personal injury or the death of the operator or others. Your warranty may not cover damage or liability caused by the use of non-authorized accessories or replacement parts.

WARNING! A chain saw is a dangerous tool

!if used carelessly or incorrectly and can cause serious, even fatal injuries. It is very important that you read and understand the contents of this operator’s manual.

WARNING! The inside of the muffler contain

!chemicals that may be carcinogenic. Avoid contact with these elements in the event of a damaged muffler.

WARNING! Long term inhalation of the

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

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Contents Operator’s manual EPA Key to symbols KEY to SymbolsContents EPA Safety Instructions Machine′s safety equipmentPersonal 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 instructionsBasic cutting technique GeneralTerms 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 Handling FuelChain 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 useDaily maintenance Weekly maintenance Monthly 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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