Honda F720 Owner's Manual page 8

To ensure safe operation
Carbon monoxide poisoning hazard
Exhaust contains poisonous carbon monoxide, a colorless and
odorless gas. Breathing exhaust can cause loss of consciousness and
may lead to death.
If you run the engine in an area that is confined or even partially
enclosed, the air you breathe could contain a dangerous amount of
exhaust gas. To keep exhaust gas from building up, provide
adequate ventilation.
Replace faulty muffler.
Do not operate the engine in a confined space where dangerous
carbon monoxide fumes can collect.
Operation on slope
When tilling on slopes, keep the fuel tank less than half full to
minimize fuel spillage.
Till across the slope (at equally spaced intervals) rather than up and
down it.
Be very careful when changing the direction of the tiller on a slope.
Do not use the tiller on a slope of more than 10°.
The maximum safe grade angle shown is for reference purpose only
and should be determined according to the type of the tool. Before
starting the engine, check that the tiller is not damaged and in good
condition. For your safety and safety of others, exercise extreme care
when using the tiller on up or down hill.
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