2005 Kawasaki KAF620 Mule 3010 Trans 4x4 Service Manual, Page 91Get this manual
COOLING SYSTEM 4-9 Coolant
Coolant Level Inspection NOTE
Check the level when the engine is cold (room of ambient temperature)
CAUTION
Do not check the level through the coolant filler by removing the radiator capIf the cap is removed, the coolant will flow out from the reservoir tank
Check the coolant level in the reservoir tank [A] with the vehicle held perpendicularlyIf the coolant level is lower than the (Low) [B] mark, remove the reservoir tank cap [C], then add coolant to the (Full) [D] mark
CAUTION
For refilling, add the specified mixture of coolant and soft waterAdding water alone dilutes the coolant and degrades its anticorrosion propertiesThe diluted coolant can attack the aluminum engine partsIn an emergency, soft water can be addedBut the diluted coolant must be returned to the correct mixture ratio within few daysIf coolant must be added often, or the reservoir tank has run completely dry; there is probably leakage in the cooling systemCheck the system for leaks