O.S. Engines FS-91 II FI - Manual (Page 2)

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Remember that your engine is not a " toy ", but a highly efficient internal-
combustion machine whose power is capable of harming you, or others, if it is
misused or abused. As owner, you, alone, are responsible for the safe operation
of your engine, so act with discretion and care at all times.
If at some future date, your O.S. engine is acquired by another person, we would
respectfully request that these instructions are also passed on to its new owner.
WARNINGS
These cover events which might involve serious
( in extreme circumstances, even fatal ) injury.
NOTES
These cover the many other possibilities, generally less
obvious sources of danger, but which, under certain
circumstances, may also cause damage or injury.
SAFETY INSTRUCTIONS AND WARNINGS ABOUT YOUR O.S. ENGINE
The advice which follows is grouped under two headings according to the
degree of damage or danger which might arise through misuse or neglect.
WARNINGS
Never touch, or allow any object to come into contact with, the rotating
propeller and do not crouch over the engine when it is running.
A weakened or loose propeller may disintegrate or be thrown off and, since propeller
tip speeds with powerful engines may exceed 600 feet(180 metres) per second, it will
be understood that such a failure could result in serious injury, (see 'NOTES' section
relating to propeller safety).
Model engine fuel is poisonous. Do not allow it to come into contact with
the eyes or mouth. Always store it in a clearly marked container and
out of the reach of children.
Model engine fuel is also highly flammable. Keep it away from open flame,
excessive heat, sources of sparks, or anything else which might ignite it.
Do not smoke or allow anyone else to smoke, near to it.
Never operate your engine in an enclosed space. Model engines, like automobile
engines, exhaust deadly carbon-monoxide. Run your engine only in an open area.
Model engines generate considerable heat. Do not touch any part of your
engine until it has cooled. Contact with the muffler(silencer), cylinder
head or exhaust header pipe, in particular, may result in a serious burn.