Yamaha XZ550RJ 1982 Owner's Manual page 51

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WARNING:
Never ride with a helmet in the helmet
holder. It could interfere with rear wheel
movement, causing loss of control and
possible an accident.
Adjustable handlebars
This model is equipped with handlebars
which are capable of vertical and horizontal
adjustment to suit the rider's position and
preference. For the adjustment procedure,
see page 177.
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