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Resumen del manual
If your saw has this type of muffler, you should clean the screen at least once a week. This is done with a wire brush. CAUTION! The screen must be replaced, if damaged. The saw will be overheated, if the screen is clogged. This results in damage on the cylinder and the piston. Never use a saw with a clogged or defective muffler. 0,5 mm Air filter The air filter must be regularly cleaned from dust and dirt in order to avoid: • Carburetor malfunctions • Starting problems • Engine power reduction • Unnecessary wear on the engine parts • Abnormal fuel consumption Clean the air filter daily or more often if the air is exceptionally dusty in the working area. • Disassemble the air filter by removing the cylinder cover and unscrew the filter. When reassembling, make sure that the filter is tight against the filter holder. Clean the filter by brushing or shaking it. • A more thorough cleaning of the filter is obtained by washing it in water and soap. An air filter, which is used for some time, cannot be cleaned completely. Therefore it must be replaced by a new one, with regular intervals. IMPORTANT! A damaged air filter must always be replaced. A Jonsered chain saw can be equipped with different types of airfilter according to working and weather conditions, season etc. Needle bearing maintenance The clutch drum is equipped with one of the following chain sprockets: • Spur sprocket (A) (the chain sprocket is welded on the drum) • Rim sprocket (B) (exchangeable) Both versions have built-in needle bearing at the drive shaft, whitch has to be greased regularly (once a week). NOTE! Use only high quality bearing grease or engine oil. A B 32 – English MAINTENANCE 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 system with a brush once a week, more often in demanding conditions. A dirty or blocked cooling system results in the saw overheating which causes damage to piston and cylinder. Centrifugal cleaning Centrifugal cleaning means the following: All air to the carburetor is carried through the starter. Dirt and dust is centrifuged away by the cooling fan. IMPORTANT! In order to keep the function of the centrifugal cleaning, a continous maintenance and care must be made. • Clean the air intake to the starter, the fan wings of the flywheel, the space around the flywheel, inlet pipe and carburetor space. Winter use During winter time, snow and cold weather can cause running problems, such as: • Too low engine temperature. • Icing of the air filter and freezing of the carburetor. Therefore some special measures are required: • Partly reduce the air inlet of the starter and by doing that increase the engine temperature. • Preheat the intake air to the carburetor by using the heat from the cylinder. Temperature 0°C (32°F) or colder: Make a hole or remove the plug so that the preheated air from the cylinder can pass into the carburetor area preventing for instance icing on the air filter. For temperatures below -5°C (23°F) and/or in snow conditions there is also: • a special cover (A) for the starter housing, • a winter plug (B) for the air intake that is fitted as shown. These reduce the air flow and prevent large amounts of snow from being sucked into the carburetor chamber. NOTE! When the winter plug is fitted the winter flap must be open. IMPORTANT! If the temperature rises above -5°C (23°F) or 0°C (32°F) respectively the saw MUST be restored to its normal settings. Otherwise there is a risk of overheating, which can cause severe engine damage. IMPORTANT! Any maintenance other than that described in this manual must be carried out by your servicing dealer. The oil pump is adjustable. Adjustments are made by turning the screw using a screwdriver or combination spanner. The saw is supplied from the factory with the screw set to position 2. Turning the screw clockwise will reduce the oil flow and turning the screw anti-clockwise will increase the oil flow. Adjustment of the oil pump + – 2 1 3 WARNING! The engine must not be running when making adjustments. ! Recommended settings: Bar 13"-15": Position 1 Bar 15"-18": Position 2 Bar 18"-20": Position 3 1 2 5 4 3 H H H English – 33 Below you will find some general maintenance instructions. If you have more questions, contact your servicing dealer. Weekly maintenance 1. Check that the AV elements are not soft or torn. 2. Lubricate the clutch drum bearing. 3. File off burrs, if any, on the sides of the bar. 4. Clean the spark plug and check the gap. The correct gap is 0,5 mm (0,020 inch). 5. Check the starter and the recoil spring. Clean the fins on the flywheel. 6. Clean the cooling fins on the cylinder. 7. Clean or change the screen in the muffler. 8. Clean the carburetor body and air box. Mont...
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