070specificationsENGINESTIHLsinglecylindertwo-strokeengineDisplacement:105.7cm3(6.47cu.in)Bore:58mm(2.28in)Stroke:40mm(1.57in)Max.enginespeedwithcuttingattachment:8000rpmIgnitionSystemType:breakercontrollermagnetoIgnitiontiming:2.8--3.2mm(0.110in--0.126in)beforeT.D.C.Breakerpointgap:0.35--0.45mm(0.013--0.018in)Sparkplug(suppressed):BoshWSR6FORChampionRCJ6YHeatrange175Electrodegap0.5mm(0.02in)sparkplugthread:M14 1.25,9.5mm(0.37in)lingFuelSystemCarburetor:AllpositiondiaphragmcarburetorwithintegralfuelpumpAirfilter:Largeareaflockedwiremeshelement Fuelcapacity:1.2I(2.5USpt)Fuelmixture:Regulargradegasolineandbrandedtwo-cycleengineoilMixratio1:40withSTIHLtwocycleengineoil;1:25withotherbrandedtwocycleengineoilsCuttingAttachmentGuidebars:DuromaticandRollomaticDuromatic53,63,75,80and90cm(20,25,30,32,and35in)Rollomatic75and90cm(30and35in)Oilomaticchain:10.26mm(0.404 )Rapid-Standard,MicroandSuper.Rapid-Standardand-MicroalsoavailableinS-typeversion12.7mm(1/2 )Rapid-StandardChainsprocket:7-toothfor0.404 pitchand6-toothfor1/2 pitchChainlubrication:Fullyautomaticoilpumpwithoifeedcontrolandhandpumpchainoilcapacity:0.53I(1.1USpt)Weight070withoutbarandchain:10.7kg(23.6lb)