Jonsered 670 manual

Please read these instructions carefully and make sure you understand them before using the machine. Operator´s manual[...]

2 – English Symbols on the chain saw: CAUTION! Chain saws can be dangerous! Careless or incorrect use can result in serious or fatal injury to the operator or others. Please read the instructions carefully and make sure you understand them before using the saw. Always wear: • Approved protective helmet • Approved hearing protection • Protec[...]

English – 3 ! CONTENTS Contents Key to symbols .................................................... 2 Safety instructions Personal protective equipment ............................................. 4 Chain saw safety equipment .................................................. 4 Inspecting, maintaining and servicing chain saw safety equipment ...[...]

4 – English ! CHAIN SA W SAFETY EQUIPMENT This section explains the various safety features of the saw, how they work, and basic inspection and maintenance you should carry out to ensure safe operation. (See the ”What is what?” section to find out where these components are on Your saw). NEVER USE A CHAIN SAW THAT HAS FAULTY SAFETY EQUIPMENT![...]

English – 5 1 Chain brake and front hand guard YOUR chain saw is equipped with a chain brake that is desig- ned to stop the chain immediately if you get a kickback. The chain brake reduces the risk of accidents, but only You can prevent them. Take care when using your saw and make sure the kickback zone of the bar never touches any object. 1 The [...]

6 – English 6 The way the chain brake is triggered, either manually or automatically, depends on the force of the kickback and the position of the chain saw in relation to the object that the kickback zone of the bar strikes. If you get a violent kickback while the kickback zone of the bar is farthest away from you the chain brake will be activat[...]

English – 7 ! 5 Vibration damping system Your chain saw is equipped with a vibration damping system that is designed to minimise vibrations and make operation easier. When you use a chain saw vibrations are generated by the uneven contact between the chain and the wood you are cutting. Cutting hardwoods (most broadleaf trees) creates more vibrati[...]

8 – English ! 3 Checking the automatic brake Hold the chain saw over a stump or other firm object. Let go of the front handle so that the bar falls onto the stump. When the bar hits the stump the brake should be applied. Inspecting, maintaining and servicing chain saw safety equipment SPECIAL TRAINING IS REQUIRED to service and repair chain saws.[...]

English – 9 SAFETY INSTRUCTIONS 4 Right hand guard Check that the right hand guard is not damaged and that there are no visible defects, such as cracks. 5 Vibration damping system Regularly check the vibration damping units for cracks or deformation Make sure the vibration damping units are securely attached to the engine unit and handles. 6 Stop[...]

10 – English ! 7 Muffler Never use a chain saw that has a faulty muffler. Regularly check that the muffler is securely attached to the chain saw. If the muffler on your saw is fitted with a spark arrestor mesh this must be cleaned regularly. A blocked mesh will cause the engine to overheat and may lead to serious damage. Never use a muffler if th[...]

English – 11 ! SAFETY INSTRUCTIONS C Some terms that describe the bar and chain When the cutting equipment supplied with your saw becomes worn or damaged you will need to replace it. Use only the type of bar and chain recommended by us. See the ”Technical data” section to find out which equipment is recommended for your saw. Bar • LENGTH (i[...]

12 – English SAFETY INSTRUCTIONS ! 2 Sharpening your chain and adjusting raker clearance The risk of kickback is increased with a badly sharpened chain! A General information on sharpening cutting teeth • Never use a blunt chain. When the chain is blunt you have to exert more pressure to force the bar through the wood and the cuttings will be v[...]

English – 13 ! C General advice on setting raker clearance • When you sharpen the cutting teeth you reduce the RAKER CLEARANCE (cutting depth). To maintain cutting performance you must file back the raker teeth to the recommended height. See the ”Technical data” section to find the raker clearance for your saw chain. • On a low-kickback c[...]

14 – English 1 Undo the bar nuts that hold the clutch cover and chain brake, using the combination spanner. Then tighten the nuts by hand as tight as you can. 2 Raise the tip of the bar and stretch the chain by tightening the chain tensioning screw using the combination spanner. Tighten the chain until it hangs slack on the underside of the bar. [...]

English – 15 C Checking chain lubrication • Check the chain lubrication each time you refuel. Aim the tip of the saw at a light coloured surface about 20 cm away. After 1 minute running at 3/4 throttle you should see a distinct line of oil on the light surface. If the chain lubrication is not working: 1 Check that the oil channel in the bar is [...]

16 – English H Bar Check regularly: • Whether there are burrs on the edges of the bar. Remove these with a file if necessary. • Whether the groove in the bar has become badly worn. Replace the bar if necessary. • Whether the tip of the bar is uneven or badly worn. If a hollow forms on one side of the bar tip this is due to a slack chain. ?[...]

English – 17 ! 6 Take great care when you cut with the top edge of the bar, i.e. when cutting from the underside of the object. This is known as cutting on the push stroke. The chain tries to push the saw back towards the user. Unless the user resists this pushing force there is a risk that the saw will move so far backwards that only the kickbac[...]

18 – English SAFETY INSTRUCTIONS GENERAL SAFETY PRECAUTIONS 1 Chain saws are designed solely for cutting wood. The only cutting equipment that can be used with this chain saw are the combinations of bars and chains recommended in the ”Technical data” section. 2 Never use a chain saw if you are tired, if you have drunk alcohol, or if you are t[...]

English – 19 ! SAFETY INSTRUCTIONS GENERAL WORKING INSTRUCTIONS This section describes basic safety rules for using a chain saw. This information is no substitute for professional skills and experience. If you get into a situation where you feel unsafe, stop and seek expert advice (look under FORESTRY SERVICES in the telephone directory). DO NOT [...]

20 – English ! SAFETY INSTRUCTIONS Two factors decide whether the chain will jam or the log will split. The first is how the log is supported and the second is whether it is in tension. In most cases you can avoid these problems by cutting in two stages; from the top and from the bottom of the log. You need to support the log so that it will not [...]

English – 21 SAFETY INSTRUCTIONS 2 The log is supported at one end. There is a high risk that it will split. A Start by cutting from below (about 1/3 of the way through). B Finish by cutting from above so that the two cuts meet. 3 The log is supported at both ends. There is a high risk that the chain will jam. A Start by cutting from above (about[...]

22 – English SAFETY INSTRUCTIONS C Clearing the trunk and preparing your retreat Remove any branches that are in the way. To do this it is best to work from the top down and keep the trunk between you and the chain saw. Never limb above shoulder height. Remove any undergrowth from the base of the tree and check the area for obstacles (stones, bra[...]

English – 23 ! We recommend that you use a bar that is longer than the diameter of the tree, so that you can make the FELLING CUT and DIRECTIONAL CUT with single cutting stokes. (See ”Technical data” to find out which lengths of bar are recommended for your saw). There are methods for felling trees with a diameter larger than the bar length. [...]

24 – English WHA T IS WHA T? What is what? 1. Cylinder cover. 2. Front handle. 3. Front hand guard. 4. Starter cover. 5. Chain oil tank. 6. Starter handle. 7. Adjuster screw, carburettor. 8. Choke control/Start throttle lock. 9. Rear handle. 10. Stop switch. Ignition on/off switch. 11. Fuel tank. 12. Silencer. 13. Bar tip sprocket. 14. Saw chain.[...]

English – 25 ! Fit the bar over the bar bolts. Place the bar in its rearmost position. Place the chain over the drive sprocket and in the groove on the bar. Begin on the top side of the bar. Make sure that the edges on the cutting links are facing forward on the top side of the bar. Fit the clutch cover and locate the chain adjuster pin in the ho[...]

26 – English Fuelmix Petrol • Use good quality unleaded or leaded petrol. • The lowest octane recommended is 90. • If you run the engine on a lower octane grade than 90 so-called, knocking can occur. This gives rise to a high engine temperature, which can result in serious engine damage. • When working with continuous high revs (e.g. deli[...]

English – 27 ! Fuelling Taking the following precautions, will lessen the risk of fire. • Do not smoke or place warm objects in the vicinity of the fuel. • Always shut off the engine before refuelling. • Slowly open the fuel cap, when filling fuel, so that possible overpressure is slowly released. • Tighten the fuel cap carefully after fu[...]

28 – English ! Start and stop WARNING! • Never start the saw engine without the bar, chain and clutch cover (chain brake) assembled - or else the clutch can come loose and cause personal injuries. • Always move the saw away from the fueling area before starting. • Place the saw on clear ground and make sure that the chain is not contacting [...]

English – 29 ! ! Carburettor Functioning, Basic setting, Final setting WARNING! Do not start the saw without the bar, chain and clutch cover (chain brake) assembled. If you do, the clutch might come loose and cause severe injuries. Operation • The carburettor governs the engine speed via the throttle. Air/ fuel are mixed in the carburettor. The[...]

30 – English Changing a broken or worn starter cord • Loosen the screws, that hold the starter device against the crankcase and remove the starter device. • Pull out the cord approx. 30 cm and lift it up into the notch in the pulley. Zero-set the recoil spring by letting the pulley rotate slowly backwards. Undo the screw in the centre of the [...]

English – 31 Silencer The silencer is designed in order to reduce the noise level and to direct the exhaust gases away from the operator. The exhaust gases are hot and can contain sparks, which may cause fire if directed against dry and combustible material. Some silencers are equipped with a special screen. If your saw has this type of silencer,[...]

32 – English Cooling system To obtain the lowest possible running temperature the saw is equipped with a cooling system.The cooling system consists of: 1. Air intake on the starter unit. 2. Air guide plate. 3. Fan blades on the flywheel. 4. Cooling fins on the cylinder. 5. Cylinder cowling (supplies cold air over the cylinder). Clean the cooling [...]

English – 33 Daily maintenance 1. Check the throttle trigger for smooth operation. If any binding occurs, or if engine fails to return to idle, the saw 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. 2. Clean the chain brake and check its fun[...]

34 – English Bar and chain combinations The following combinations are CE approved. Bar Chain Length, Pitch, Max. inches inches tip radius 630 102 111 3,0 6,3 670 102 111 3,3 5,9 625 102 112 2,7 6,1 Note 1: Equivalent noise level is, according to ISO 7182 and ISO 9207, calculated as the time-weighted energy total for noise levels under various wo[...]

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