2009-2010 Ski-Doo REV-XP/XR 2 Stroke and REV-XR 1200 4-TEC Service Manual, Page 468Get this manual
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Section 06 DRIVE SYSTEM AND BRAKE Subsection 04 (BRAKE)
WARNING
Never apply anything to brake fittings, The use of threads sealant or Teflon tape could cause brake system failure Se