2006-2008 Yamaha Snowmobiles Apex/Attak Factory Service Manual, Page 340Get this manual

2006-2008 Yamaha Snowmobiles Apex/Attak Factory Service Manual, Page 340

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COOLING SYSTEM
Air bleeding steps: Lift up the tail of the machine Remove the bleed bolt on the heat exchanger While slowly adding coolant to the coolant filler, drain the coolant until no more