PS-COS12 & PS-COS14 Saw Manual 3924 E. Trent Ave.
SYMBOL EXPLANATION Symbols on the power cutter: WARNING! The power cutter can be dangerous! Careless and 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 power cutter. Always wear: • Approved protective helmet • Approved hearing protection • Protective glasses or visor Warning Cutting creates a lots of dust which can cause inhalation damages.
CONTENTS Before using your new Power cutter • Read the Operator’s Manual carefully. • Check the assembly and adjustment of the cutting blade, see chapter ”Assembly”. • Start the engine and check the carburettor settings. See chapter ”Maintenance”, section ”Carburetor”. When adjusted correctly the cutting blade should not rotate when idling. Setting the idling speed is described in the Operator’s Manual. Adjust the speed according to these instructions.
SAFETY INSTRUCTIONS ! WARNING! Incorrect or careless use of a power cutter can turn it into a dangerous tool that can cause serious or even fatal injury. It is extremely important that you read and understand this manual. PERSONAL PROTECTIVE EQUIPMENT ! WARNING! When using a power cutter, approved protective equipment must be used. Personal protective equipment does not eliminate the risk of accidents, however, it can reduce the effects of an injury in the event of an accident.
SAFETY INSTRUCTIONS 3 Muffler ! WARNING! During use and for some time after the muffler is very hot. Do not touch the muffler if it is hot! The muffler is designed to give the lowest possible noise level and to direct the engine‘s exhaust fumes away from the user. The engine‘s exhaust fumes are hot and can contain sparks, which can lead to the outbreak of fire.
SAFETY INSTRUCTIONS 3 Muffler Never use a machine that has a defective muffler. Check regularly that the muffler is secured to the engine body. 4 Throttle lock 1 Make sure the throttle control is locked at the idle setting when you release the throttle lock. 5 Blade guard for the cutting blade Never use a defective blade guard or a blade guard that is not fitted correctly. ! ! WARNING! Check that the cutting blade is fitted correctly and does not show signs of damage.
SAFETY INSTRUCTIONS GENERAL WORKING INSTRUCTIONS Fuel safety (Filling/Fuel mixture/Storage) ! WARNING! Exercise great care when handling fuel. Bear in mind the risk of fire, explosions and inhaling fumes. • Never fill the machine while the engine is running. • Provide good ventilation when filling or mixing fuel (petrol and 2-stroke oil). • Move the machine at least 3 m from the filling position before starting. • Never start the machine: a) If you have spilt fuel on it. Wipe up all spillage.
SAFETY INSTRUCTIONS ! WARNING! Over exposure to vibrations can result in blood-vessel or nerve injury to persons suffering with blood circulation problems. Seek medical attention if you experience physical symptoms that can be related to over exposure to vibrations. Examples of such symptoms are numbness, lack of feeling, “tickling“, “pricking“, pain lack of or a reduction in normal strength, changes in the colour of the skin or its surfaces. These symptoms normally appear in the fingers, hands or wrists.
SAFETY INSTRUCTIONS Pull in Pull in occurs when the lower part of the blade is suddenly stopped or when the cut closes. (To avoid this see the section ”How to avoid kickback” and ”Pinching/rotation” below). Pinching/rotation Pinching occurs when the cut closes. The power cutter can be drawn suddenly and powerfully downwards. How to avoid pinching Support the work piece in such a way that the cut remains open during the cutting operation and when the cut is finished.
SAFETY INSTRUCTIONS CUTTING BLADES Abrasive discs The cutting material on abrasive discs consists of grit bonded using an organic binder. ”Reinforced blades” are made up of a fabric or fibre base that prevents total breakage at maximum working speed if the blade should be cracked or damaged. (The term reinforced does not refer to those cutting blades that are only reinforced around the flange).
SAFETY INSTRUCTIONS Type of cutting blades Guard The cutting blade should be marked with the same or a higher speed than that stated on the machine’s rating plate. Never use a cutting blade with a lower speed rating than what is stated on the machine’s rating plate. Check that the guard is not cracked or shows signs of any other damage. Clean the inside of the guard before fitting a new blade. Check that the guard can be adjusted.
WHAT IS WHAT? 22 19 1 14 5 2 15 6 18 21 20 16 3 7 23 11 8 12 10 9 13 17 What is what on a power cutter? 1. Cylinder cover 13. Combination spanner 2. Muffler 14. Air filter cover 3. Fuel tank 15. Blade guard 4. Rear handle 16. Starter handle 5. Choke / Throttle trigger lockout 17. Operator’s manual 6. Throttle catch 18. Adjustment lever for blade guard 7. Stop switch 19. Front handle 8. Cutting head 20. Starter 9. Cutting arm 21. Decompression valve 10.
ASSEMBLY Fitting the cutting head Fitting the cutting blade Remove the bolt (1) and nut (2). Remove the cover. Fit the drive belt over the clutch drum. Refit the cover and tighten the bolt (1) and nut (2). Univent cutting blades are Husqvarna manufactured and approved for freehand cutting. The paper labels on each side of the blade are there to distribute the pressure from the flange washer and prevent the blade from slipping. 2 The blade is placed between the flange hub (A) and the flange washer (B).
FUEL HANDLING Fuelmix Fuelling IMPORTANT! The power cutter is equipped with a two-stroke engine and must always been run using a mixture of gasoline and two-stroke engine oil. It is important to accurately measure the amount of oil to be mixed to ensure that the correct mixture is obtained. When mixing small amounts of fuel, even small inaccuracies can drastically affect the ratio of the mixture. ! Always provide for good ventilation when handling fuel.
START AND STOP Start and stop ! WARNING! Before starting observe the following: • Do not start the power cut without the cutting arm or cutting head fitted. Otherwise the clutch can come loose and cause personal injury. • Always move the power cutter from the filling area before starting. • Ensure that you and the machine stand firmly and that the cutting blades rotates freely. • Make sure no unauthorised persons are within the working area.
MAINTENANCE Belt pulley and clutch Adjusting the drive belt Never start the engine when the belt pulley and clutch are removed for maintenance. • The drive belt is fully enclosed and well protected from dust, dirt and mechanical effects during the cutting process. A • To tension the drive belt, slightly loosen the bolts (A), which secure the cutting head and belt guard. • Turn the tensioning screw so that the nut (B) is located directly under the arrow on the cover.
MAINTENANCE Carburetor Conditions Univent product has been designed and manufactured Your Husqvarna to specifications that reduce harmful emissions. After your unit has been run 8-10 tanks of fuel the engine has broken in. To ensure that your unit is at peak performance and producing the least amount of harmful emissions after break in, have your authorized servicing dealer, who has a revolution counter at his disposal, to adjust your carburetor for optimum operating conditions.
MAINTENANCE Fuel filter • The fuel filter sits inside the fuel tank. • The fuel tank must be protected from contamination when filling. This reduces the risk of operating disturbances caused by blockage of the fuel filter. • The filter cannot be cleaned but must be replaced with a new filter when it blocked. The filter should be changed at least once per year.
MAINTENANCE Starter ! Tensioning the recoil spring WARNING! • The recoil spring sits in its tensioned position in the starter housing and can with careless handling fly out and cause personal injury. • When replacing the recoil spring or the starter cord great care should be exercised. Always wear protective glasses. Replacing a broken or worn starter cord • Loosen the bolts that hold the starter against the crankcase and lift off the starter unit.
MAINTENANCE Spark plug The condition of the spark plug is affected by: • An incorrect carburettor setting. • An incorrect fuel mixture (too much oil). • A dirty air filter. Cooling system To maintain as low an operating temperature as possible the power cutter is equipped with a cooling system. The cooling system consists of: 0,5 mm These factors cause deposits on the spark plug electrode that may result in malfunction or starting difficulties.
MAINTENANCE 8 10 15 3 13 16 1 5 4 19 11 Below follows some general maintenance instructions. If you need further information please contact your service workshop. 17 8 15 Daily maintenance 1. Check that throttle components work correctly from a safety view point (throttle and starter throttle catch). 2. Check the tension of the drive belt. 3. Check the condition of the cutting blade. 4. Check the condition of the blade guard. 5.
TECHNICAL DATA PS-COS12 371K Engine Cylinder volume, cu.in/cm3 Cylinder bore, inch/mm Stroke, inch/mm Idle speed, rpm Max.
