1989 Honda FL400R Pilot Service Manual, Page 52Get this manual
5COOLING SYSTEM SERVICE INFORMATION TROUBLESHOOTING SYSTEM TESTING COOLANT REPLACEMENT
RADIATORCOOLING FAN WATER PUMP RESERVE TANK
SERVICE INFORMATION
GENERAL
Do not remove the radiator cup when the engine is hotThe coolant is under pressure and severe scalding could resultThe engine must be cool before servicing the cooling systemIf the engine must be running to do some work, make sure the area is well ventilatedNever run the engine in an enclosed areaThe exhaust contains poisonous carbon monoxide gas that can cause loss of consciousness and may lead to death