2004 Skidoo Tundra Skandic Series Service Manual, Page 309Get this manual
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Section 06 ELECTRICAL Subsection 03 (SPARK PLUGS)
1 Proper socket 2 Improper socket
SPARK PLUG TIGHTENING TORQUE
MODELS All models SPARK PLUGS NGK TORQUE Nm (lbfft) 27 (20)