Jonsered Comprehensive Repair Guide for Chainsaw Models

Page 24

Repair instructions

7 Repair instructions

7.1 Starter assembly – removal

Undo the four bolts that fasten the starter assembly to the crankcase and lift off the starter assembly. (see figure 1)

Fig 1

Pull out about 30 cm of the cord and fasten it in the notch in the pulley rim. Release the tension in the return spring by letting the pulley wind backwards slowly. (see figure 2)

WARNING!

If the recoil spring is still under tension when the pulley is re-

moved it can fly out and cause injury. Wear eye protection.

1	2
Fig 2

Remove the bolt from the centre of the pulley and lift off the pulley. (see figure 3)

Cleaning and inspection

Clean the parts and check the following:

• The starter cord.

• That the pawls on the flywheel are undama- ged, i.e. that they spring back towards the centre and move freely.

• Lubricate the return spring with light oil.

Fig 3

English – 25

Image 24

Contents Workshop manual 510 16Workshop manual Jonsered CS 2240 and CS 2240S Contents Index Trouble shooting Vibration damping systemIntroduction and safety instructions ContentsSafety Target group GeneralChanges ToolsGeneral instructions Special instructionsSymbols on the saw Symbols in the Workshop ManualTechnical data Rpm Special tools 13a 13b 16b 16c 16a Service data Service data Safety equipment ContentsCleaning and inspection Dismantling the chain brakeChain brake reassembly Silencer removal Silencer refittingOperating test RefitChain catcher replacement Dismantling the start/stop controlStop switch resistance measurement Assembling the start/stop control2xA a Throttle lock, throttle trigger and return spring removalThrottle lock, throttle trigger and return spring refitting Repair instructions Starter assembly removal Changing a broken or worn starter cord Tensioning the recoil springStarter assembly refitting Ignition module testingReplacing a worn recoil spring Ignition module and flywheel Removal Ignition module and flywheel Refitting Centrifugal clutch removal Centrifugal clutch refitting Dismantling the oil pump and screenAssembling the oil pump and screen Assembling the intake systemAir intake system removal Carburettor DesignFunction Dismantling the carburettor English Cleaning and inspection Clean all units in clean petrol Assembly Pressure testing the carburettor Assemble on the saw Carburettor adjustment Conditions during adjustment Replacement of the H-needle or complete car BurettorReplacement of the L-needle Tank unit Venting the fuel tankTest Opening pressure outward Opening pressure inwardCleaning and inspection Clean and inspect all parts Assembly Vibration damping systemReplacing the fuel filter Replacing the fuel hose/ return hoseReplacing the air-purge AssemblingPiston and cylinder removal If replacing the cylinderEnglish Faults and causes Score marks on the piston a Piston and cylinder refittingCarbon build-up B Piston ring breakageInlet manifold Assembling the intake systemCylinder pressure testing Crankshaft bearings replacement Crankshaft complete dismantlingCrankshaft complete reassembly Repairing damaged threadsReplacing the bar bolt Replacing the front bar guideReplacing the rear bar guide Troubleshooting Troubleshooting StartingIdling low rpm Troubleshooting methods High rpmAcceleration 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.