Yamaha MX 1972 - Page 55

10.
Selection
of
Secondary
Reduction
Ratio
The
secondary reduction
ratio
must
be
selected according
to
the
racing circuit
condition-bumpy
or
smooth.
To enable the rider
to
select the most suitable reduction
ratio,
a
variety
of
drive sprockets and sprocket wheels are available.
Drive sprocket
Sprocket wheel
214-17
461-30
1
3T
322-25451-00
51
T
214-17461-40
14T
214-17461-50
15T
214-17461-60
16T
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