Yamaha 4SH-28199-67 Owner's Manual page 64

ACB-06EACB-06E
Oil temperature indicator
light does not come on.
Push start switch with the
transmission in neutral.
Oil temperature
indicator light comes
on momentarily.
Engine oil temperature
and electrical circuit are
OK. Go ahead with riding.
Oil temperature indicator light checking method
Turn the main switch to "ON" and
the engine stop switch to "
Oil temperature indicator
light does not come on.
Ask a Yamaha dealer to
inspect the electrical circuit.
".
Oil temperature indicator
light comes on.
Check engine oil temperature.
Oil tempera-
ture is low.
4-5
EBU00049
Oil tempera-
ture is high.
Allow to cool.