Jonsered CS 2240 manual Changing a broken or worn starter cord, Tensioning the recoil spring

Page 25

Repair instructions

7.2Changing a broken or worn starter cord

When the starter cord is worn and must be replaced, the tension on the return spring must be released.

1

Pull the cord out about 30 cm and lift it into the notch on the outside of the starter pulley. Release the tension on the return spring by allowing the starter pulley to rotate slowly backwards (see figure 2).

WARNING!

If the spring tension is activated on the starter pulley, the spring can fly out and cause personal injury. Wear protective glasses.

2

Undo the bolt in the centre of the pulley and re- move the pulley (see figure 3).

3

Fit a new cord through the hole in the pulley and tie a knot to secure it. Feed the other end of the cord through the hole in the starter housing and through the starter handle, then tie a double knot in the end. Wind about 3 turns of the starter cord onto the pulley. Fit the bolt through the centre of the pulley and tighten to a torque of 2–3 Nm.

Cleaning and inspection

• Clean and inspect all parts carefully. If there are any cracks or other defects replace the damaged parts with new ones. Lubricate the return spring with a little grease.

7.3 Tensioning the recoil spring

1

Fasten the starter cord in the notch in the pulley rim and wind the pulley about 3 turns clockwise. Check that the pulley is free to rotate at least an- other half turn when the starter cord is fully exten- ded (see figure 4).

2

Tension the cord with the handle. Remove the thumb and released back the cord (see figure 5).

Fig

4

Fig

5

26 – English

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Contents 510 16 Workshop manualWorkshop manual Jonsered CS 2240 and CS 2240S Contents Index Vibration damping system Trouble shootingContents Introduction and safety instructionsGeneral Safety Target groupChanges ToolsSpecial instructions General instructionsSymbols in the Workshop Manual Symbols on the sawTechnical data Rpm Special tools 13a 13b 16b 16c 16a Service data Service data Contents Safety equipmentDismantling the chain brake Cleaning and inspectionChain brake reassembly Silencer refitting Silencer removalOperating test RefitDismantling the start/stop control Chain catcher replacementAssembling the start/stop control Stop switch resistance measurementThrottle lock, throttle trigger and return spring removal 2xA aThrottle lock, throttle trigger and return spring refitting Repair instructions Starter assembly removal Tensioning the recoil spring Changing a broken or worn starter cordIgnition module testing Starter assembly refittingReplacing a worn recoil spring Ignition module and flywheel Removal Ignition module and flywheel Refitting Centrifugal clutch removal Dismantling the oil pump and screen Centrifugal clutch refittingAssembling the intake system Assembling the oil pump and screenAir intake system removal Design CarburettorFunction Dismantling the carburettor English Cleaning and inspection Clean all units in clean petrol Assembly Pressure testing the carburettor Assemble on the saw Replacement of the H-needle or complete car Burettor Carburettor adjustment Conditions during adjustmentReplacement of the L-needle Venting the fuel tank Tank unitTest Opening pressure outward Opening pressure inwardVibration damping system Cleaning and inspection Clean and inspect all parts AssemblyReplacing the fuel hose/ return hose Replacing the fuel filterReplacing the air-purge AssemblingIf replacing the cylinder Piston and cylinder removalEnglish Piston and cylinder refitting Faults and causes Score marks on the piston aCarbon build-up B Piston ring breakageAssembling the intake system Inlet manifoldCylinder pressure testing Crankshaft complete dismantling Crankshaft bearings replacementRepairing damaged threads Crankshaft complete reassemblyReplacing the front bar guide Replacing the bar boltReplacing the rear bar guide Troubleshooting Starting TroubleshootingIdling low rpm High rpm Troubleshooting methodsAcceleration och retardation 2009W39

CS 2240 specifications

The Jonsered CS 2240 is a powerful and versatile chainsaw designed for homeowners, landscapers, and property maintenance professionals. It stands out in the market due to its unique combination of performance-oriented technology, ergonomic design, and ease of use.

One of the main features of the Jonsered CS 2240 is its robust engine. With a 40.9cc X-Torq® engine, this chainsaw is designed to provide efficient power and performance while minimizing fuel consumption and emissions. The X-Torq® engine technology not only enhances the chainsaw's acceleration and torque but also contributes to better fuel efficiency, making it an environmentally friendly option for users.

The CS 2240 is equipped with a 16-inch bar, which strikes a perfect balance for various cutting tasks, whether it's felling small trees, trimming branches, or performing general maintenance. This length also allows for greater maneuverability in tight spaces, making it an ideal choice for homeowners and professional users alike.

A notable aspect of the Jonsered CS 2240 is its innovative starting system. The Quick Release Air Filter ensures that the air filter can be easily accessed for maintenance, promoting optimal engine performance. Coupled with the Air Injection system, which filters out larger debris before it enters the engine, this chainsaw maintains a longer lifespan and reduces the frequency of required maintenance.

Safety is paramount in chainsaw design, and Jonsered does not compromise on that front. The CS 2240 features a chain brake, which halts the chain movement in the event of kickback. Additionally, the front handguard provides an extra layer of protection, ensuring that users can operate the saw with confidence.

The ergonomic design of the CS 2240 incorporates a comfortable handle that reduces vibrations, allowing for extended use without excessive fatigue. Weighing approximately 10.8 lbs, it strikes the right balance between power and portability.

In summary, the Jonsered CS 2240 is an excellent choice for those seeking a reliable, efficient, and user-friendly chainsaw. Its advanced engine technology, balanced bar length, safety features, and ergonomic design make it a standout in its class, ideal for tackling a variety of cutting tasks with ease and efficiency. Whether you are a casual user or a professional, the CS 2240 is well-equipped to meet diverse cutting needs while ensuring safety and comfort.
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