2005 Ski-Doo Racing Handbook, Page 358Get this manual
SECTION 082005 MX 550 AND 380 FC
377 AND 552 ENGINE TYPES
ENGINE REMOVAL AND INSTALLATION
377 and 552 Engine Types
17 Nm (150 lbfin) 28 Nm (21 lbfft) Loctite 271 37 Nm (27 lbfft) 377 engine RTV sealant RTV sealant 552 engine