O.S. Engines 21RG-MX User Manual
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This engine was designed for model boats.
Do not attempt to use it for any other purpose.
Mount the engine in your model securely,
following the manufacturers' recommenda-
tions, using appropriate screws and lock-
nuts.
Fit an effective silencer (muffler). Frequent
close exposure to a noisy exhaust
(especially in the case of the most powerful
high-speed engines) may eventually impair
your hearing and such noise is also likely to
cause annoyance to others over a wide area.
Take care that the glowplug clip or battery
leads do not come into contact with the
propeller or any other rotating parts. Also
check that the linkage to the throttle arm is
secure.
If your engine does not have a built-in recoil
starter, use an electric starter. The wearing
of safety glasses is also strongly
recommended.
When handling the boat immediately prior to
launching, be especially cautious.
Keep the propeller and other rotating parts
away from you.
NOTES
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For their safety, keep all onlookers
(especially small children) well back (at
least 20 feet or 6 meters) when preparing
your model for running.
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