therearwheelrearwardtostretchthedrivechainsteady.●Measurethelengthof20-linkonthestraightpartofthelowersideofchainfromthepincenterofthe1stpintothepincenterofthe21stpin.Ifthelengthexceedstheservicelimit,thechainshouldbereplaced.Sinceoverwornsprocketswillcauseanewchaintowearfaster,inspectboththeen-gineandrearsprocketswheneverthechainisre-placed,andreplacethemifnecessary.DriveChain20-LinkLengthStandardServiceLimit317.5–318.2mm(12.50–12.53in.)319mm(12.6in.)Alooseaxlenutcanleadtoanaccidentre-sultinginseriousinjuryordeath.Tightentheaxlenuttothepropertorque.●Checktherearbrakeeffectiveness.Whenthechainhasreacheditswearlimit(i.e.,whenithasstretchedby1.7%ofitsoriginallength),itisnolongersafeforuseandshouldbereplaced.Sinceitisimpracticaltomeasuretheentirelengthofthechain,determinethedegreeofwearbymeasuringa20-linksectionofthechain.●Thedrivechainmaywearunevenly,socheckthechainslackbychangingtheposition,andpositiontheloosestpartofthedrivechainlowerside.●Loosentherearaxleshaft,andpullA.PullB.20-LinkLengthC.StraightPart○Whenridinginwetandmuddyconditions,mudstickstothechainandsprockets,resultinginanoverlytightchain,whichcancauseittobreak.Topreventthis,adjustthechainslack(measuredbetweenthechainandtheswingarm)to62–68mm(2.4–2.7in.).106MAINTENANCEANDADJUSTMENTWARNINGNOTEChainWearInspection
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