1986 Ski-Doo Factory Shop Manual, Page 76Get this manual
Section 02 ENGINE SUb-section 03 1377 ENGINE TYPE)
COOLING SYSTEM
65 Nom {481b1oW
, He: screw MB 121 Lock washer mm 131 3, Hel( screw 16 Cylmder head (;owl 5_ Sellmg striP 6Cylmder cowl 7_ Spring nul 4,8 161 Wasner (6) Screw J 6 16 0Woodruff key :3 1 Fan shaft
15, Fan hOUSing 16 Distance sleeve