Yamaha YFM225S 1985 Owner's Manual page 64

NOTE:
If you do not have a torque wrench available
during a service operation requiring one, take
your machine to a Yamaha dealer or other
qualified mechanic to check the torque
settings and adjust them as necessary.
WARNING:
Modifications to this machine not approv-
ed by Yamaha may cause loss of perfor-
mance; excessive noise, or render it unsafe
for use. Consult a Yamaha dealer or other
qualified mechanic before attempting any
changes.
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