1985-1986 Honda ATC250R Shop Manual, Page 128Get this manual
COOLING SYSTEM CYLINDER WATER PUMP
Remove the coolant drain bolt at the cylinder and water pump, and drain the coolantCheck that the drain bolt sealing washers are in good condition, then install the drain bolts
DRAIN BOLT
DRAIN BOLT
Remove the left radiator lower hose from the bottom of left radiatorDrain the coolant from the left radiator and radiator hoseDrain the coolant from the reserve tankI nstall the rad iator hose
Pour recommended coolant mixture (Page 9-1) slowly throught the radiator filler hole up to the filler neckPour recommended coolant mixture (Page 9-1) into the reserve tankRADIATOR HOSE CAPACITY: 910 cc (31 US OZ, 0.802 Imp qt) RADIATOR: 700 cc (23 US OZ, 0.617 Imp qt) RESERVE TANK: 210 cc (7 US OZ, 0.185 Imp qt)