1989 Ski-Doo Repair Manual, Page 76Get this manual
Section 02 ENGINE Sub-section 03 (377 ENGINE TYPE)
CAUTION: Clrcllps must not move freely in the groove after installationIf so, replace them
1,2, Nutdistance nut
Position distance nuts as illustratedExhaust
7, Cylinder
Before piston in cylinder, lubricate the cylinder with new injection oil or eCluivalentInstall ring compressor (PIN 420 8760 901 on piston assembly
: The ring compressor will not fit on oversize pIstons
4,7, Cylinder headcylinder
At cylinder and or cylinder head installationuse (P420 8761 71) aligning tool to secure sealing of intalce manifold and exhaust, before tightening CYlinder head nuts