2004 Kawasaki KVF750 4x4, Service Manual., Page 102Get this manual
4-8 COOLING SYSTEM Coolant
Coolant Deterioration Inspection
in tank [A] Visually inspect the coolantare the reservealuminum parts If whitish cotton-like wafts observed, in the cooling system are corrodedIf the coolant is brown, iron or steel parts are rustingIn either case, flush the cooling systemIf the coolant gives off an abnormal smell, check for cooling system leakIt may be caused by exhaust gas leaking into the cooling system
Coolant Level Inspection
Check the level when the engine is cold (room or ambient temperature)