1981 Ski-Doo Shop Manual Supplement, Page 142Get this manual
SECTION 08 SUB-SECTION 02 (FRAME)
For the folowing 1981 models:
ElanSpirit Citation 3500Mirage Citation 4500EMirage IIE Citation SSMirage Special Everest 500EFutura 500E Everest LCFutura LC Blizzard 5500Grand Prix Special Blizzard 7500Super Sonic Blizzard 9500Ultra Sonic Elite Alpine 640 ER