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

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

COOLING SYSTEM INSP ADJ Air bleeding steps: Lift up the tail of the machine Remove the bleed bolt on the heat exchanger While
the coolant circulates (approximatelyminutes)The rear heat exchanger will be warm to the touch WARNING To avoid severe injury
or death: Make sure the machine is securely supported with suitable stand Do not exceed 3,000 rminDrive line damage and excessive
V-belt wear could occur, or the machine could unexpectedly move forward if the clutch engages Operate the engine only in
well-ventilated area Remove the coolant recovery tank cap and bleed the cooling system again, as described aboveNo air bubbles