1984 Ski-Doo Shop Manual, Page 27Get this manual
SECTION 02 ENGINE SUB -SECTION 01 (247 ENG IN TYPE)
16, Tab lock
Tab lock should be replaced if bent more than three (3) timesIf in doubt replace
1 to 10,1 ,1Decompressor ass'y
To adjust the decompressor, put the decompressor switch on "off" positionIf there is some end gap between cable housing and decompressor valve lever, turn the adjustment sc rew counterclockwise until you elim inate that end gapBeware not to compress the valve leverSwitch on "off" position Adjustment screw