1999 Ski-Doo Factory Shop Manual Volume Two, Page 107Get this manual
Subsection 03
Section 04 ENGINE (494, 583 AND 670 ENGINE TYPES)
494, 583 AND 670 ENGINE TYPES
ENGINE SUPPORT AND MUFFLER
All Models
583 and 670 engines 4
Ultra Copper 3
494 engine
Loctite 271 494 and 670 engines 23 Nm (17 lbfft) 24 Nm (18 lbfft) 25 Nm (18 lbfft) Loctite 271 MX 494, 583 and 670