Hokuetsu AIRMAN PDS185S-6EZ1 Instruction Manual page 21

3.3.2 Check coolant level
Cap
H990432

If the engine is operated with insufficient cooling water, the engine may be damaged.
3. Operation


MAX

MIN
A130110

When removing the radiator cap, lightly turn it and release the internal
pressure without completely opening it once the first stage lock is released.
After confirming that the internal pressure has been released, turn it while
pushing in until the second stage lock is released. If this procedure is
neglected, its inner pressure can blow off the radiator cap, and steam jetting
out of the radiator may cause scalding burns.
Verify the coolant level in the reserve tank is above
[MIN].
If the coolant level is lower than [MIN], remove the
cap and supply coolant up to the center between
[MIN] and [MAX]. If too much coolant is poured into
the reserve tank, it may overflow during operation.
If there is no coolant in the reserve tank, remove the
radiator cap and add coolant directly through the
radiator fill port.
(See 5.5.17)
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