2009-2010 Ski-Doo REV-XP/XR 2 Stroke and REV-XR 1200 4-TEC Service Manual, Page 296Get this manual
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Section 04 FUEL SYSTEM Subsection 04 (E-TEC DIRECT FUEL INJECTION)
The magneto connector must be disconnected to prevent any spark in the engine compartment should the engine be crankedFuel vapo