2005 Ski-Doo Tundra, Skandic, Expedition Shop Manual, Page 82Get this manual
Section 03 ENGINES (2-STROKE) Subsection 01 (277 ENGINE TYPE)
CAUTION: Circlips must not move freely in the groove after installationIf so, replace themBefore inserting piston in the cylinder, lubricate the cylinder with new injection oil or equivalentPosition cylinder head on cylinder with fins in line with crankshaft center lineCross torque retaining nuts to 26 Nm (19 lbfft)