Yanmar 4JH45 Operation Manual page 50

BEFORE YOU OPERATE
Never pour cold coolant into a hot
engine.
6. Remove reservoir cap (Figure 13, (4))
to add coolant if necessary. Do not add
water.
7. Replace filler cap and tighten it firmly.
Failure to do so will cause water
leakage.
Reservoir Capacity
0.8 L (0.85 qt)
8. Check the rubber hose (Figure 13, (1))
connecting the reservoir to coolant
tank/heat exchanger. Replace if
damaged.
Note: If the coolant runs low too often
or the coolant level in coolant
tank drops without any change
in the level in the reservoir, there
may be water or air leaks in the
cooling system. Consult
authorized Yanmar dealer or
distributor.
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JH Series Operation Manual