2005 Ski-Doo RT Series Shop Manual, Page 239Get this manual
Section 06 DRIVE SYSTEM Subsection 06 (CHAINCASE)
Check if O-ring no21 is brittle, hard or damagedReplace if necessaryCheck splines inside spacer no20 for wearReplace if necessaryCheck if the bearing no19 turns smoothly and freelyReplace if defective
Installation
On MACH series, the rocker style chain can not be used with an upper sprocket having fewer than 29 teethOn Summit series, do not use another chain than the 13-plates wide oneIMPORTANT: Due to the difference in pitch between the rocker type chain and the standard type chain, it is necessary to use standard chain and standard lower sprocket if smaller upper sprocket is usedThe chaincase housing is threaded to accept tensionerFit chain on upper sprocket to make sure that you are using right one according to widthNOTE: No work (separation, lengthening) can be done on the silent chain typeThe installation is the reverse of the removal procedurePay attention to the following detailsReinstall the brake disc and the caliper to torque the lower sprocket boltApply Loctite 271 (red) (PN 293 800 005) on sprocket bolt threads before torquing