Husqvarna SMR Owner's Manual

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Contents

10CLUTCHType...............................oil bath multiple disc clutch, hydraulic controlTRANSMISSIONType ...............................................................constant mesh gear typeTransmission ratio (TE-SMR-TXC)1st gear......................................................................2,000 (z 28/14)2nd gear .....................................................................1,611 (z 29/18)3rd gear .....................................................................1,333 (z 24/18)4th gear .....................................................................1,086 (z 25/23)5 th gear....................................................................0,920 (z 23/25)6 th gear ....................................................................0,814 (z 22/27)Transmission ratio (TC)1st gear......................................................................1,866 (z 28/15)2nd gear (250)...........................................................1,529 (z 26/17)2nd gear (450-510) ....................................................1,444 (z 26/18)3rd gear ....................................................................1,263 (z 24/19)4th gear. ....................................................................1,086 (z 25/23)5 th gear. ...................................................................0,954 (z 21/22)SECONDARY DRIVETransmission sprocket- Rear wheel sprocket(TE-TXC 250).........................................................................Z 13- Z 50Transmission sprocket- Rear wheel sprocket(TE -TXC 450-510). ................................................................Z 13- Z 47Transmission sprocket- Rear wheel sprocket(TC 450)...............................................................................Z 14- Z 50Transmission sprocket- Rear wheel sprocket(TC 250)...............................................................................Z 12- Z 50Transmission sprocket- Rear wheel sprocket(TC 510)...............................................................................Z 14- Z 47Transmission sprocket- Rear wheel sprocket(SMR 450-510)....................................................................Z 14- Z 42Transmission ratio (TE-TXC 250) ..................................................3,846Transmission ratio (TC 250).........................................................4,166Transmission ratio (TC 450). .......................................................3,571Transmission ratio (TC 510) ....................................................... 3,357Transmission ratio (SMR 450-510).............................................. 3,000Transmission ratio (TE-TXC 450-510) ........................................... 3,615TECHNICAL DATAENGINEType .....................................................single cylinder, 4 strokeCooling.......................liquid with electric fan on TE-SMR modelsBore (250)....................................................................2.99 in.Bore (450-510)..............................................................3.81 in.Stroke (250)..................................................................2.17 in.Stroke (450) .................................................................2.39 in.Stroke (510)..................................................................2.67 in.Displacement (250) ...............................................15.22 cu. in.Displacement (450)................................................27.39 cu. in.Displacement (510) ................................................30.56 cu. inCompression ratio...........................................................12,9:1Starting (TC)............. kick start (with automatic decompressor)Starting (SMR)...............electric (with automatic decompressor)Starting (TE-TXC) ...............electric and kick start (with automaticdecompressor)TIMING SYSTEMType....................................double overhead camshaft; 4 valveValve clearance (with engine cold)Intake ..........................................................0.004 ÷ 0,006 in.Exhaust........................................................0.006 ÷ 0,008 in.LUBRICATIONType .......Dry sump with two oil pump rotor and cartridge filterIGNITIONType ...........................................C.D.I. electronic, with variableadvance (digital control)Spark plug type ......................................................NGK CR8EBSpark plug gap...........................................................0.027 in.FUEL SYSTEMType (TE-SMR)...............................................................Electronic injection feedType (TC-TXC 250) ”Keihin” FCR-MX 37 with acceleration pump andthrottle position sensorTipo (TC-TXC 450-510) Keihin” FCR-MX 41 with acceleration pumpand throttle position sensorVenturi diameter (TC-TXC 250) ..................................................1.46 in.Venturi diameter (TC-TXC 250-450)............................................1.61 in.High speed jet (TC-TXC 250) ..........................................................175High speed jet (TC-TXC 450-510) ....................................................180Low speed jet (TC-TXC 250) ............................................................42Low speed jet (TC-TXC 450-510)........................................................45Starting jet (TC-TXC 250)..................................................................72Starting jet (TC-TXC 450-510) ..........................................................85Starting air jet. .........................................................................0.16 in.Main air jet ...................................................................................200Low air jet .....................................................................................100Floater ......................................................................................g 11.2Throttle piston..............................................................................15 MMetering pin ............................................................................OBDVRMetering pin slot (TC-TXC 250). ......................................................4thMetering pin slot (TC-TXC 450-510).................................................5thIdle mixture adjusting screw (TC-TXC 250) ......................rounds 1+1/2Idle mixture adjusting screw (TC-TXC 450-510)....................... rounds 2PRIMARY DRIVEDrive pinion gear- Clutch ring gear (TC 250) .............................Z 20- Z 67Drive pinion gear- Clutch ring gear (TE-TXC 250)........................Z 24- Z 88Drive pinion gear- Clutch ring gear (450-510)............................Z 23- Z 63Transmission ratio (TC 250)..............................................................3,350Transmission ratio (TE-TXC 250)........................................................3,666Transmission ratio(450-510).............................................................2,739Cap1_GB 19-07-2007 10:35 Pagina 10