Husqvarna 325 C Manual
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English – 11 WHAT IS WHAT? What is what on the trimmer? 1. Trimmer head 2. Grease filler cap 3. Angle gear 4. Spray guard 5. Shaft 6. Loop handlebar 7. Throttle 8. Stop switch 9. Throttle trigger lock 10. Cylinder cover 11. Starter handle 12. Fuel tank 13. Choke 14. Air purge15. Air filter cover 16. Clutch cover 17. Handlebar adjustment 18. Locking nut 19. Support flange 20. Drive disc 21. Socket spanner 22. Operator‘s Manual 23. Allen key 24. Locking pin 25. Shaft coupling
12 – English ASSEMBLY Assembly of the trimmer head ! WARNING! Under no circumstances may the cutting equipment be used without an approved guard fitted. See the chapter “Technical data” . If the wrong guard or a defective guard is fitted this can cause serious personal injury. Assembling the loop handlebar (322L, 323L, 325L X, 325LXT, 325LDX) Assembling the loop handlebar (325C, 325C X) • Clip the loop handle onto the shaft. Note that the loop handle must be fitted between the arrows on the shaft. • Slide the spacer into the slot in the loop handle. • 322L/323L: Fit the nut, washer and bolt. 325L X/325LXT/325LDX: Fit the nut, knob and bolt. Do not overtighten. • Now adjust the trimmer to give a comfortable working position. Tighten the bolt/knob. • Position the handle on the shaft. Note that the handle must be mounted below the arrow on the shaft. • Fit the bolt, securing plate and wing nut as shown in the diagram. • Tighten the wing nut. It is extremely important that the disc drive’s/support flange’s guide engages correctly in the cutting equipment’s centre hole when assembling the cutting equipment. Cutting equipment assembled incorrectly can result in serious and/or fatal personal injury. Assembling and dismantling the two-part shaft (325L XT, 325LDX) Assembling: • Make sure the handle is loose. • Guide the cut-out on the lower section of the shaft into the coupling‘s locking plate on the upper section of the shaft. The sections are then locked together. • Tighten the handle. Dismantling • Undo the handle (at least three turns). • Press the handle towards the coupling. • Carefully twist the lower section out of the lock. • Hold both parts of the shaft and pull out the lower section from the coupling.
English – 13 ASSEMBLY Fitting the spray guard and trimmer head (325C) Guard •Fit the guard as shown in the diagram. Tighten securely. Trimmer head •Fit the dust cup on the shaft. The nut must be completely covered by the dust cup. •Hold the dust cup with a spanner to prevent the shaft from rotating. •Screw the trimmer head onto the shaft. Assembling other guards and cutting equipment (322L, 323L, 325L X, 325LXT, 325LDX) •Fit the appropriate guard (A) for use with the trimmer head. Hook the guard onto the shaft fitting and secure it with the bolt (L). •Fit the disc drive (B) on the output axle. •Turn the blade axle until one of the disc drive’s holes aligns with the corresponding hole in the gear housing. •Insert the locking pin (C) into the hole to lock the axle. •Screw on the trimmer head (H) in the direction of rotation. •Dismantling takes place Assembling the spray guard and trimmer head Superauto II (322L, 323L, 325L X, 325LXT, 325LDX) •Fit the appropriate guard (A) for use with the trimmer head. Hook the guard onto the shaft fitting and secure it with the bolt (L). •Fit the drive disc (B) on the output axle. •Turn the blade axle until one of the holes in the drive disc aligns with the hole in the gear housing. •Insert the locking pin (C) in the hole so that the axle is locked. •The trimmer head must be split to be fitted (see the diagram). Proceed as follows: •Insert your finger into the centre hole of the cover (I) at the same time as you hold the cover with your other fingers. Press the two catches (J) that extend from the cut-out on the bottom section (K) using the thumb and index finger of your other hand. Press apart the trimmer head using the fingers on the cover. •Place the cover (I) and the support flange (F) on the output axle. •Fit the nut (G). The tightening torque of the nut is 35-50 Nm (3,5-5 kpm). Use the socket spanner in the tool kit. Hold the handle of the spanner as close to the trimmer guard as possible. The nut is tightened when the spanner is turned against the direction of rotation (left-hand thread). •Fit the trimmer head‘s bottom section (K) on the K JI GF I A K B C cover (I) by pressing the two sections together with the cut-outs on the bottom section aligned with the catches on the cover. •To dismantle follow the instructions in the reverse order. H
14 – English Fitting the spray guard and trimmer head (325C X) •Fit the guard as shown in the diagram. Tighten securely. •Insert the locking pin into the hole to lock the axle. •Screw the trimmer head onto the shaft. Tighten securely. ASSEMBLY
English – 15 FUEL HANDLING Fuel mixture ! WARNING! Always provide good ventilation when handling fuel. NOTE! The machine is fitted with a two-stroke engine and must always be run on a mixture of gasoline and two-stroke oil. It is important to measure the quantity of oil accurately, to ensure the correct mixture ratio. Small discrepancies in the amount of oil have a great bearing on the proportions of the fuel mixture when mixing small amounts of fuel. 5 10 15 200,10 0,20 0,30 0,40 Gasoline Oil2%(1:50) 1 2 1/2 52 1/2 6 1/2 12 7/8 US gallonUS fl. oz. Lit. Lit. Gasoline NOTE! Always use high grade unleaded oil mixed gasoline (minimum 87 RON). Leaded fuel will destroy the catalytic converter and it will no longer serve its purpose. •This engine is certified to operate on unleaded gasoline. •The lowest recommended octane rating is 87. If you run the engine on lower octane rating than 87 so- called “knocking“ can occur. This leads to an increased engine temperature, which can result in a serious engine breakdown. •When working at continuous high revs a higher octane rating is recommended. Two-stroke oil •For the best results use HUSQVARNA two- stroke oil, which has been specially developed for clearing saws and chain saws. Mixing ratio 1:50 (2%). •Never use two-stroke oil intended for water cooled outboard motors, so-called outboard motor oil. •Never use oil intended of four-stroke engines.•Clean around the fuel cap. Contamination in the tank can disrupt operations. •Ensure that the fuel is well mixed by shaking the container before filling the tank. WARNING! The following precautions reduce the risk of fire: Do not smoke or place any sources of heat in the vicinity of the fuel. Never refuel when the engine is running. Always stop the engine and let it cool for a few minutes before refuelling. Open the fuel cap slowly when fuelling so that any over pressure is released slowly. Tighten the fuel cap carefully after refuelling. Always move the machine from the fuelling place before starting. ! Fuelling ! WARNING! The catalytic converter muffler gets very hot during and after use. This also applies during idling. Be aware of the fire hazard, especially when handling the saw near flammable substances or vapours. Min. 3 m (10 ft) Mixture •Always mix gasoline and oil in a clean container intended for fuel. •Always start by filling half the quantity of gasoline required. Then add the entire oil quantity. Mix (shake) the fuel mixture. Fill the remaining quantity of gasoline. •Mix (shake) the fuel mixture carefully before filling in the machine‘s fuel tank. •Do not mix more than max. one month’s supply of fuel. •If the machine is not used for a long period of time, the fuel tank should be emptied and cleaned. • This engine is certified to operate on unleaded gasoline.
16 – English START AND STOP Cold engine IGNITION: Set the stop switch to the start position. CHOKE: Set the choke control in the choke position. AIR PURGE: Press the air purge diaphragm repeatedly until fuel begins to fill the diaphragm. The diaphragm need not be completely filled. Warm engine Use the same starting procedure as for the cold engine, but do not set the choke control in the choke position. The start throttle position is obtained by setting the choke control in the choke position and then returning it to its original position. Stop The engine is stopped by switching off the ignition.Control before starting ! WARNING! The complete clutch cover with shaft must be fitted before the machine is started, otherwise the clutch can become loose and cause personal injury. Always move the machine from the filling area before starting. Place the machine on a flat surface. Ensure the cutting equipment cannot come into contact with any object. Make sure no unauthorised persons are in the working area, otherwise there is a risk of serious personal injury. The safety distance is 15 metres. Start and stop For reasons of safety follow these recommendations! •Check that the support flange is not cracked due to fatigue or due to being tightened too much. Discard the support flange if it is cracked. •Ensure the locking nut has not lost its captive force. The nut lock should have a locking force of at least 1.5 Nm. The tightening torque of the locking nut should be 35-50 Nm. •Check that the trimmer head and spray guard are not damaged or cracked. Replace the trimmer head or spray guard if they are exposed to impact or are cracked. •Never use the machine without a guard or spray guard nor with a defective guard. WARNING! When the engine is started with the choke in the choke or start position the cutting equipment starts to rotate immediately. ! Start Press the machine body against the ground using your left hand (NOTE! Not your foot). Grip the starter handle, slowly pull out the cord with your right hand until you feel some resistance (the starter pawls grip), now quickly and powerfully pull the cord. Reset the choke control as soon as the engine fires and repeat until the engine starts. When the engine starts quickly apply full throttle and the start throttle will automatically disengage. NOTE! Do not pull the starter cord out completely and do not release the starter cord from the fully extended position. This can damage the machine.
English – 17 Fine adjustment •When the machine has been ”run-in” the carburetor should be finely adjusted. The fine adjustment should be carried out by qualified person. First adjust the L-jet, then the idling screw T and then the H-jet. Conditions •Before any adjustments are made the airfilter should be clean and the airfilter cover fitted. Adjusting the carburetor while a dirty airfilter is in use will result in a leaner mixture when the filter is finally cleaned. This can give rise to serious engine damage. •Carefully turn the L and H needle to the mid point between fully turned in and fully turned out.. •Do not attempt to adjust the needles beyond the stops as damage can occur. •Now start the machine according to the starting instructions and run it warm for 10 minutes. NOTE! If the cutting attachment rotates/moves the T screw should be turned anti-clockwise until the cutting attachment stops. Low speed needle L Try to find the highest idling speed, turning the low speed needle L clockwise respectively counter- clockwise. When the highest speed has been found, turn the low speed needle L 1/4 turn counter-clockwise. NOTE! If the cutting attachment rotates/moves in the idling position, turn the idling speed screw T counter-clockwise until the cutting attachment stops. Carburetor Your Husqvarna product has been designed and manufactured 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 Basic setting •The carburetor is set to its basic setting when test run at the factory. The basic setting should be kept during the machine‘s first working hours. Thereafter the carburetor should be finely adjusted. Fine adjustment should be carried out by a skilled technician. NOTE! If the cutting attachment rotates/moves while the engine is idling the T-screw should be turned anti-clockwise until the cutting attachment stops. Rec. idling speed: 2 700 rpm. Recommended max. speed: See “Technical Data” . ! WARNING! The complete clutch cover with shaft must be fitted before the machine is started, otherwise the clutch can become loose and cause personal injury. Operation •The carburetor governs the engine‘s speed via the throttle. Air/fuel is mixed in the carburetor. The air/fuel mixture is adjustable. To take advantage of the engine‘s optimal output the adjustment must be correct. •The setting of the carburetor means that the engine is adapted to local conditions, for example, the climate, altitude, gasoline and the type of 2-stroke oil. •The carburetor is equipped with three adjustment possibilities: L = Low speed needle H = High speed needle T = Idle speed adjuster screw •The fuel quantity in relation to the air flow permitted by the throttle opening is adjusted using the L and H-needles. Turning the needles clockwise gives a leaner fuel mixture (less fuel) and turning them anti-clockwise gives a richer fuel mixture (more fuel). A leaner mixture gives high revs while a richer mixture give less revs. •The T-screw regulates the position of the throttle while the engine is idling. Turning the screw clockwise gives a higher idling speed while turning it anti-clockwise gives a lower idling speed. L + 1/4 WARNING! If the idling speed cannot be adjusted so that the cutting attachment stops, contact your service workshop. Do not use the machine until it has been correctly adjusted or repaired. !
18 – English Correctly adjusted carburetor A correctly adjusted carburetor means that the machine accelerates without hesitation and the machine 4-cycles a little at max speed. Furthermore, the cutting attachment must not rotate/move at idling. A too lean adjusted low speed needle L may cause starting difficulties and bad acceleration. A too lean adjusted high speed needle H gives lower power = less capacity, bad acceleration and/or damage to the engine. A too rich adjustment of the two speed needles L and H gives acceleration problems or too low working speed. MAINTENANCE Final setting of the idling speed T Adjust the idling speed with the screw T, if it is necessary to readjust. First turn the idle speed adjusting screw T clockwise until the cutting attachment starts to rotate/ move. Then turn, counter-clock- wise until the cutting attachment stops. A correctly adjusted idle speed setting occurs when the engine runs smoothly in every position. It should also be good margin to the rpm when the cutting attachment starts to rotate/move. CAUTION! Contact your servicing dealer, if the idle speed setting cannot be adjusted so that the cutting attachment stops. Do not use the machine until it has been properly adjusted or repaired. High speed needle H The high speed needle affects the machine’s power, speed, temperature and fuel consumption. A too lean adjustment on the high speed needle H (the high speed needle H is screwed in too much) gives a too high speed resulting in engine damage. Do not allow the engine to run at full speed for more than 10 seconds. Apply full throttle and turn the high speed needle H slowly anticlockwise until the engine runs unevenly. The high speed needle H is then turned slowly clockwise a little until the engine runs smoothly. Note the engine should be run unloaded when adjusting the high speed needle. Therefore dismantle the cutting equipment, nut, support flange and disc drive before adjusting the high speed needle. The high speed needle is adjusted correctly when the machine ‘splatters’ a little . If the machine smokes heavily at the same time as it ‘splatters’ heavily the adjustment is too rich. NOTE! For optimum setting of the carburetor, contact a qualified servicing dealer who has a revolution counter at his disposal. H
English – 19 MAINTENANCE Cooling system To maintain as low opera- ting temperature as possible the engine is equipped with a cooling system. The cooling system consists of: 1. An air intake on the starter unit. 2. Cooling fins on the flywheel. 3. Cooling fins on the cylinder 4. Cylinder cover (leads cold air onto the cylinder). Muffler NOTE! Some mufflers are fitted with a catalytic converter. See “Technical data” to see whether your machine is fitted with a catalytic converter. The muffler is designed to dampen the noise level and to direct the exhaust fumes away from the user. The exhaust fumes are hot and can contain sparks, which can result in fire if the exhaust fumes are directed towards a dry and inflammable material. Some mufflers are equipped with a special spark arrest screen. If your machine is fitted with this type of screen it should be cleaned regularly. This is done using a wire brush. On mufflers without a catalytic converter the screen should be cleaned weekly, or replaced if necessary. On mufflers fitted with a catalytic converter the screen should be checked and cleaned monthly. If the screen is damaged it should be replaced. If the screen is frequently blocked, this can be a sign that the function of the catalytic converter is impaired. Contact your dealer to inspect the muffler. A blocked screen will cause the engine to overheat resulting in damage to the cylinder and piston. Also see under “Maintenance”. NOTE! Never use a machine with a defective muffler. ! WARNING! Mufflers fitted with catalytic converters become extremely hot during use and after stopping. This also applies at idling speeds. Contact can result in burns to the skin. Be observant to the risk of fire! 14 3 2 Spark plug The condition of the spark plug is affected by: •An incorrect carburetor setting. •An incorrect fuel mixture (too much or faulty oil). •A dirty air filter. These factors cause deposits on the spark plug electrode that may result in malfunction or starting difficulties. If the machine is low on power, difficult to start or runs poorly while idling always check the spark plug first. If the spark plug is dirty, clean it and at the same time check that the electrode gap is 0.5 mm. The spark plug should be changed after about one month of operation or earlier if necessary. NOTE! Always use the recommended type of spark plug. An incorrect spark plug can damage the cylinder/piston. 0,5 mm The end of the drive axle in the lower shaft should be lubricated with grease every 30 hours. There is a risk that the drive axle ends (splined coupling) on two-part shafts jam if they are not lubricated regularly. Two-part shaft Clean the cooling system using a brush at least once a week, in difficult conditions more often. A dirty or blocked cooling system leads to the engine overheating resulting in damage to the cylinder and piston.
20 – English MAINTENANCE NOTE: Use only HUSQVARNA replacement parts. Use of other brands of replacement parts can cause damage to your unit or injury to the operator or others. Your warranty does not cover damage or liability caused by the use of accessories and/or attachments not specifically recommended by HUSQVARNA. Maintenance schedule Below you will find some general maintenance instructions. Daily maintenance • Check throttle trigger and throttle trigger lockout function. • Check stop switch function. • Check that blade/trimmer head does not rotate at idling. • Clean the exterior of the machine. • Check that the harness is undamaged. • Check the guard for damage or cracks. • Change the guard in case of impacts or cracks. • Check the trimmer head for cracks and chips or damage. Replace if necessary. • A non-balanced blade/trimmer head induces heavy vibrations that may damage the machine. • Check that the locking nut is sufficiently tightened. • Check that nuts and screws are sufficiently tightened. Weekly maintenance • Check the starter, especially cord and return spring. • Clean the carburetor area. • Clean the exterior of the spark plug. • Remove it and check the electrode gap. • Adjust it to 0,5 mm (.020), or change the spark plug. • Clean the cooling fins on the cylinder and check that the air intake at the starter is not clogged. • Check that the angle gear is filled with grease up to 3/4. Use special grease. • Clean the air filter. • Clean or replace the muffler’s spark arrest screen (only mufflers with a catalytic converter). Monthly maintenance • Clean the fuel tank. • Clean the exterior of the carburetor and the space around it. • Clean the fan and the space around it. • Check fuel hose for cracks or other damage. Change if necessary. • Change fuel filter in fuel tank. • Check clutch, clutch spring and clutch drum for wear. Change if necessary. • Check electrical wires and connections. • Change the spark plug. • Change the airfilter. • Check and clean the muffler’s spark arrest screen if necessary (only mufflers with a catalytic converter). Air filter The air filter should be cleaned regularly removing dust and dirt to avoid: • carburetor malfunction • starting problems • reduced engine power • unnecessary wear to engine parts • abnormal fuel consumption Clean the filter after every 25 hours or more regularly if operating conditions are exceptionally dusty. Cleaning the air filter Dismantle the air filter cover and remove the air filter. Wash in clean, warm soapy water. Ensure that the filter is dry before refitting. An air filter used for a long period of time can never be cleaned completely. Therefore it is necessary to replace the filter from time to time with a new filter. A damaged air filter must always be replaced. If the machine is used in dusty conditions the air filter should be soaked in oil, see the section on “Oiling the air filter“. The angle gear is filled with a sufficient quantity of grease at the factory. However, before using the machine you should check that the angle gear is filled to 3/4 with grease. Use special grease. Normally, the grease does not need to be changed except when repairs are carried out. Angle gear (322L, 323L, 325L X, 325LXT, 325LDX) Oiling the air filter Always use HUSQVARNA filter oil, order no. 503 47 73-01. The filter oil contains a solvent to make it spread evenly through the filter. You should therefore avoid skin contact. Put the filter in a plastic bag and the pour the filter oil over it. Knead the plastic bag to distribute the oil. Squeeze the excess oil out of the filter inside the plastic bag and pour off the excess before fitting the filter on the machine. Never use common engine oil. This would drain through the filter quite quickly and collect in the bottom.