2005 Ski-Doo REV Series Shop Manual, Page 221Get this manual

2005 Ski-Doo REV Series Shop Manual, Page 221

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Section 05 ENGINE MANAGEMENT (POWER TEK) Subsection 01 (OVERVIEW)
If the ECM recognizes valid tether cord cap, it allows engine to rev above 3000 RPMThe ECM will shut down immediately after stop