2002 Ski-Doo Shop Manual Volume One, Page 133Get this manual

Section 04 ENGINE Subsection 04 (593 ENGINE TYPE)
At assembly, place the pistons over the connecting rods with the letters "AUS" (above the arrow on the piston dome) facing in direction of the exhaust port
ENGINE TYPE 593

PISTON CIRCLIP INSTALLER (PN) 529 035 686

Use circlip installer (PN 529 035 686) to install new mono-hook circlips no20AUS

Insert circlip into support in such way that when installed in piston groove, the tab will face upward

• ATV
• Jet Ski
• Outboard Motors
• Personal Watercraft
• Snowmobiles
• Stern Drives