Honda Outboard Motor BF15A Owner's Manual page 21

7. After starting, be sure water is flowing out of the water check hole.
CAUTION: If water does not flow out, or if steam comes out, stop the
engine. Check to see if the screen in the cooling water inlet is obstructed.
Do not operate the engine until the problem has been corrected.
X
0
WATEd CHECK
HOLE
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