Honda Outboard Motor BF9.9A/15A Owner's Manual page 67

TAKING CARE OF UNEXPECTED PROBLEMS
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When cranking the engine with an open ignition circuit (spark plugs
removed from the ignition circuit), disengage the emergency engine stop
switch clip from the engine stop switch to prevent electrical damage to the
ignition system.
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If the engine was running when it submerged, there may be mechanical
damage, such as bent connecting rods. If the engine binds when cranked,
do not attempt to run the engine until it has been repaired.
5. Pour a teaspoon of engine oil into each spark plug hole, then pull the recoil
starter several times to lubricate the inside of the cylinders. Reinstall the
spark plugs and engage the emergency engine stop switch clip with the
engine stop switch.
6. Attempt to start the engine.
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If the engine fails to start, remove the spark plugs, clean and dry the
electrodes, then reinstall the spark plugs and attempt to start the engine
again.
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If the engine statrs, and no mechanical damage is evident, continue to
run the engine for l/2 hour or longer (be sure the water level is at least
2 inches above the anticavitation plate).
7. As soon as possible, take the motor to a Honda marine dealer for inspection
and service.