Western Australian Consolidated Regulations Western Australian Consolidated Regulations (1) If the engine
power of a motor bike is transmitted to the rear wheel by a chain, the driver
and any passenger must be protected from the front sprocket and at least the
upper part of the chain by —
(a) the
frame or equipment of the motor bike; or
(b) a
chain guard.
(2) A chain guard must
cover the chain to a point —
(a) at
least 300 mm to the rear of the rearmost foot rest; or
(b)
above the centre of the rear drive sprocket.