2003 Ski-Doo ZX Series Factory Shop Manual, Page 120Get this manual
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Section 04 ENGINE Subsection 02 (377, 503 AND 552 ENGINE TYPES)
4 22 Nm (16 lbfft) 503: 22 Nm (16 lbfft) 377: 10 Nm (89 lbfin)
A03C1IS
22 Nm (16 lbfft)