Honda BF40A Owner's Manual page 81

WATER INTAKES
WATER INTAKES
7. Allow the engine to run at idle for
at least 5 minutes to clean the
inside of the motor.
8. Stop the motor and remove the
garden hose adapter.
STORAGE
9. Remove the sealing washer from
the garden hose adapter and install
the sealing washer on the wash
plug.
If tape was used to cover the three
water intakes in step 6, remove the
tape now.
10. Install the wash plug into the gear
case securely.
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