Husqvarna 322, Workshop Manual

Page 1: ...English Workshop manual 322 322L 325 325L 522L ...

Page 2: ...__________________ 23 6 Cylinder and piston _______________________ 27 7 Crankshaft and Crankcase _________________ 31 Copyright Husqvarna AB Sweden 1998 This supplement only takes up elements specific to the above mentioned models For complete information when servicing we rec ommend that the supplement is studied together with the Workshop Manual WorkshopManual Brushcutters Trimmers Pruners Hedg...

Page 3: ...2 ...

Page 4: ...3 1 Starter Contents Dismantling ________________________________ 4 Assembly _________________________________ 4 Replacing the drive pawls ____________________ 5 ...

Page 5: ...d assembled and are fitted in the starter housing as a single unit Exercise care when opening the packaging so that the spring does not fly out Assembly Clean all component parts and assem ble in the reverse order as stated for dismantling WARNING Use protective glasses The return spring is tensioned in the starter pulley and can fly out and cause personal injury with negligent handling Off load t...

Page 6: ...Now turn the starter pulley 6 turns anticlockwise Check the spring tension With the cord fully extended it should be possible to turn the starter pulley at least a further half turn Fit the starter handle Tension the return spring Check the spring tension Fit the starter on the engine body Do not forget the guide bushes for the fuel tank Lubricate the axle spindle with a little grease and fit the ...

Page 7: ...6 ...

Page 8: ...7 2 Ignitionsystem Contents Dismantling 8 Assembly 9 ...

Page 9: ... muffler and the spark plug Unhook the throttle cable from the carburettor Dismantling Dismantle the cylinder cover the guard over the muffler and the spark plug Unhook the throttle cable and remove the bolts holding the clutch cover Remove the remaining bolts A securing the ignition module as well as the bolts B holding the centrifugal clutch Lift off the clutch and ignition module Dismantle the ...

Page 10: ...d If the crankshaft has two keyways the flywheel should be fitted to the right hand keyway seen from the end of the shaft Fit the centrifugal clutch NOTE Do not forget the washers between the flywheel and the centrifugal clutch Assembly Check that the key and keyway show no signs of damaged Fit the centrifugal clutch NOTE Do not forget the washers between the flywheel and the centrifugal clutch Di...

Page 11: ...10 ...

Page 12: ...uelsystem Contents Carburettor dismantling _____________________ 12 Assembly ________________________________ 13 Throttle __________________________________ 13 Carburettor setting _________________________ 15 ...

Page 13: ...ettor compartment with compressed air Dismantle the carburettor Carburettor Dismantling 1 Remove the cylinder cover and blow out the carburettor compart ment with compressed air 2 Disconnect the throttle cable from the lever arm on the carburettor 3 Loosen the carburettor bolts 4 Remove the bolt holding the air filter holder The carburettor is made by Zama It has the same design and operation as W...

Page 14: ...hrottle Separate the engine body and clutch cover Assembly 1 First fit the fuel hoses on the carburettor NOTE The hose with the fuel filter in the tank should be fitted on the carburettor s inlet side pump chamber 2 Hold the air filter holder 1 in position on the carburettor 3 Slide in the carburettor bolts 2 4 Place the gasket 3 in position and secure the entire carburettor package against the di...

Page 15: ... position before the throttle halves are put together Lubri cate the vibration element using soapy water This facilitates fitting the throttle onto the shaft Fit together the throttle halves using the 5 bolts but do not tighten them fully until the throttle has been slid into position on the shaft Assemble other components in the reverse order as stated for dismantling Remove the bolts that hold t...

Page 16: ... Basic setting The carburettor is set to its basic setting when test run at the factory The basic setting is richer than the optimal setting the max speed is 600 800 r min under the recommended max speed and should be kept during the engine s first working hours Thereafter the carburettor should be finely adjusted Some carburettors are fitted with plastic sleeves with a limiter so called CARB and ...

Page 17: ...e to the engine A too rich setting of the L and H needles give accelera tion problems or a too low working speed NOTE If the cutting equipment rotates while idling the T screw should be turned anticlockwise until it stops Low speed needle L Find the highest idling speed by slowly turning the low speed needle clockwise and anticlockwise When the highest speed has been found turn the L needle 1 4 tu...

Page 18: ... using a punch Ø 5 mm The basic setting of the carburettor is now complete Further fine adjustment within the limits that the plastic sleeves on the needles permit can be necessary Afterreplacingthecompletecarburettor 1 Check that the plastic sleeve on the H needle is turned as far as possible anticlockwise richest fuel mixture The sleeve sits freely on the needle and can be turned without affecti...

Page 19: ...eeve on the L needle and unscrew the needle 3 Carefully screw in the new L needle to the bottom and then loosen it 1 turn 4 Press a new plastic sleeve on the L needle down to the first stop The sleeve can now be turned without turning the needle 5 Turn the plastic sleeve as far as possible clockwise leanest fuel mixture 6 Start the engine and let it idle 7 Use the screwdriver 531 00 48 63 to adjus...

Page 20: ...19 4 Centrifugalclutch Contents Dismantling 20 Assembly 20 Replacing the clutch drum and drive axle 21 ...

Page 21: ... idle without the cutting equipment s drive axle rotating Dismantling Dismantle the clutch by following the instructions in the chapter Ignition system Dismantling The centrifugal clutch is bolted to the flywheel Follow the detailed instructions in the chapter Ignition system when the clutch is dismantled Assembly Put together the clutch shoes with the springs NOTE Both clutch shoes should be repl...

Page 22: ...n position using Loctite To replace the bearing the cover can be heated to approx 70 C by using a hot air gun so that the glue releases Dismantle the bearing using a suitable punch and hammer NOTE Dismantle the shaft s securing clamp and rubber insert in the clutch cover so that these are not damaged when heating the cover Assembly is carried out in the reverse order as stated for dismantling Use ...

Page 23: ...22 ...

Page 24: ...23 5 Anglegear Contents Dismantling _______________________________ 24 Assembly ________________________________ 25 ...

Page 25: ...e gear from the shaft Remove the circlips holding the bear ings on the input respective output axles Dismantling 1 Dismantle the cutting equipment and its guard 2 Loosen the bolt holding the angle gear on the shaft and remove the angle gear 3 Remove the circlips holding the bearings on the output axle illus trated respective on the input axle by using circlip pliers Heat the entire angle gear to a...

Page 26: ...clip A that holds the bearing on the input axle Heat the gear housing to approx 110 C and insert the output axle first and then the input axle Make sure the bearing bottoms in its seating Fit the circlips B and C Make sure they sit correctly in their grooves Other components are fitted in the reverse order as stated for disman tling NOTE Do not forget to fill the gear to approx 3 4 full using gear...

Page 27: ...26 ...

Page 28: ...27 6 Cylinderandpiston Contents Dismantling _______________________________ 28 Assembly ________________________________ 29 ...

Page 29: ...re it is dismantled from the crankcase Dismantling Dismantle all components around the cylinder including the distance piece fitted to the carburettor Dismantling Dismantle the following components Cylinder cover muffler grille muffler with heat guard starter and spark plug Fold back the fuel tank Now remove the 2 bolts holding the distance piece against the crankcase Remove the distance piece wit...

Page 30: ...surface Clean the contact surface on the base of the cylinder and apply a narrow string of sealant No 503 26 70 01 to the sealing surface Clean any sealant or grease from the crankcase Fit the piston on the connecting rod so that the arrow on top of the piston points towards the exhaust port See the instructions in the Workshop Manual Clean the sealant from the crankcase and fit the piston on the ...

Page 31: ...30 ...

Page 32: ...31 7 Crankshaftandcrankcase Contents Dismantling _____________________________________ 32 Assembly ______________________________________ 32 ...

Page 33: ...ust be perfectly sealed so as not to affect this pump function There cannot be any leakage either from the crankshaft or between the crankcase halves or between the crankcase and the cylinder Always replace the sealing rings and gaskets when servicing the crankcase Dismantling Dismantle all components so that only the crankcase and crankshaft remain Now lift the crankshaft out of the crankcase Dis...

Page 34: ...101 90 19 26 2018W43 ...