Honda BF75A Owner's Manual page 107

Periodic maintenance and adjustment
are important to keep the motor in the
best operating condition. Service and
inspect according to the
MAINTENANCE SCHEDULE.
Shut off the engine before
performing any maintenance. If
the engine must be run, make
sure the area is well ventilated.
Never run the engine in an
enclosed or confined area.
Exhaust contains poisonous
carbon monoxide gas;
exposure can cause loss of
consciousness and may lead to
death.
Be sure to reinstall the engine
cover, if it was removed, before
starting the engine. Lock it
securely by lowering the fixing
levers.
If the engine must be run, make
sure there is water at least 100
mm (4 in) above the
anticavitation plate, otherwise
the water pump may not receive
sufficient cooling water, and the
engine will overheat.
Use only genuine Honda parts or
their equivalents for
maintenance or repair. The use
of replacement parts which are
not of equivalent quality may
damage the motor.
12. MAINTENANCE
107