IndexAAir filter, checking..................................... 73Auxiliary DC jack ...................................... 25BBackrest (RST90 / RST90PGT) ............... 31Battery.................................................... 108Brake and parking brake .......................... 93Brake lever ............................................... 26Break-in.................................................... 50CCarburetors (RST90)................................ 77Center shock absorber and rear torsionsprings, adjusting spring preload(RST90 / RST90PGT)........................... 39Control rods, adjusting ............................. 43Coolant temperature warning indicator .... 23Cooling system......................................... 84DDrive chain housing.................................. 91Drive guard............................................... 28Drive track and slide runners ................... 98Drive track life, maximizing ...................... 54Driving ...................................................... 55EEngine idling speed, adjusting (RST90)... 69Engine oil and oil filter cartridge ............... 78Engine stop switch ................................... 24EPS warning indicator(RS90P / RS90PLT / RST90PGT)........ 23Extrovert drive sprocket(RS90P / RS90PLT / RST90PGT)........ 95FFittings and fasteners............................. 108Fuel .......................................................... 37Fuel level warning indicator...................... 21Fuel meter and grip/thumb warmer levelindicator ................................................ 19Fuse, replacing....................................... 109GGeneral maintenance andlubrication chart .................................... 60Grip/thumb warmer adjusting switch ........ 24HHeadlight beam switch ............................. 24Headlight beams, adjusting.................... 107Headlight bulb, replacing........................ 104Helmet shield heater jack(RS90P / RS90PLT / RST90PGT) ........ 26High beam indicator light.......................... 17High-altitude settings................................ 77IIdentification numbers ............................ 126LLocation of the important labels ................. 1Low coolant temperature indicator light ... 18Lubrication.............................................. 102MMain switch .............................................. 12Multi-function meter unit ........................... 14OOil level warning indicator (RST90).......... 21Oil level/pressure warning indicator(RS90P / RS90PLT / RST90PGT) ........ 22PParking brake lever .................................. 27Part locations ............................................. 9Passenger footrests(RST90 / RST90PGT)........................... 31Passenger grip warmer switch(RST90 / RST90PGT)........................... 30Passenger grips (RST90PGT) ................. 30Periodic maintenance chart forthe emission control system ................. 59Pre-operation check list............................ 46RRear storage area and rear carrier........... 34Recommended equipment ....................... 63Riding your snowmobile ........................... 50SSafety information ...................................... 6Self-diagnosis device ............................... 23Shift lever ................................................. 27Shock absorber, rear,adjusting damping force(RS90P / RS90PLT / RST90PGT) ........ 42Shock absorber, rear, adjusting springpreload (RS90P / RS90PLT) ................ 40Shock absorbers, front,adjusting spring preload........................ 38Shroud and covers,removing and installing(RS90P / RS90PLT / RST90PGT) ........ 63