1997 Ski-Doo Factory Shop Manual Volume Three, Page 60Get this manual
Section 03 ENGINE Sub-Section 02 (599, 699 AND 809 ENGINE TYPES)
1,2,11, Cylinder Head Cover, Cylinder Head and Cylinder
Check flatness of part sealing surfacesRefer to LEAK TEST AND ENGINE DIMENSION MEASUREMENT 03-03 and look for Checking Surface Flatness Mount piston over connecting rod with the letters "AUS" (over an arrow on the piston dome) facing in the direction of exhaust port (see illustration below)AUS
A21C03A
1Expansion sleeve 231 needles 3Locating sleeves
A01C01A
1Exhaust
599 and 699 Engines Install piston pin puller (PN 529 0210 00) and turn handle until piston pin is correctly positioned in piston