Took my carbs of the other night and let the sled sit all night with no carbs anyway i had the carb heater knob off but i lost all my coolant from the tank some how. i assume i will have to bleed the cooling system. anyway is there a bleed bolt under the rear of the seat and tunnel? do i need to access this bolt if there is one to properly bleed the system or can i just bleed the system from the front of the sled?