4. MAINTENANCE 4. 10 ENGINE COOLING SYSTEM The engine cooling system fluid is a 50 / 50 mixture of ethylene glycol and water. Coolant Fill To maintain the fluid level, add coolant to the overflow reservoir (Fig. 4.10A). The overflow reservoir should be checked daily when the engine is cold. Keep the coolant level to the line marked on the reservoir. Coolant Level To drain the cooling system, turn the radiator petcock (Fig. 4.10B) in to open. Release the radiator cap. Remove the lower coolant hose from the engine to drain the coolant from the engine block. Drain, flush and replenish the cooling system flush every two (2) years or every 1000 operating hours, which ever comes first. C3790 Fig.
4.10A WARNING To avoid personal injury: DO NOT remove the radiator cap when the engine is hot. WARNING To avoid personal injury never add coolant when the engine is running or is hot. 54 Radiator Drain Petcock C3797 Fig. 4.10B C3797 Fig. 4.10B