1981 Ski-Doo Shop Manual Supplement, Page 67Get this manual
SECTION 03 SUB-SECTION 05 (AIR INTAKE AND FU EL TANK)
THROTTLE CABLE REPLACEMENT REMOVALINSTALLATI ON
First remove cable clip located between seats (driver's side)To do so, remove driver seat backrest (2 wing nuts inside engine compartment), drill out rivet and fold back coveringRemove clipIf required, retaining screw can be held from opposite side by repeating procedure on passenger's sideCut-off throttle cable housing just ahead of the metal section (engine compartment), pullout cable as much as possible and cut it