Yamaha YZF-R25 Owner's Manual page 15

Correct usage
Wrong usage
Wearing the helmet correctly
Always connect the chin strap. In the
case of an accident, the helmet has a
much less chance of coming off if the
chin strap is connected.
Types of helmets and their usage
Full-type: use only for riding at
low to mid-range speeds.
Full-face-type: use for riding at
mid-range to high speeds.
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SAFETY INFORMATION
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