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Control functions
22
If the oil level warning indicator and the warn-
ing light do not go off, check the engine oil lev-
el in the oil tank (see page 78 for engine oil
level checking procedures), and add engine
oil if necessary.
If the oil level warning indicator and the warn-
ing light still remain on, have a Yamaha dealer
check the snowmobile.
ESU13991
Oil level/pressure warning
indicator “” (RS90P /
RS90PLT / RST90PGT)
The oil level/pressure warning indicator has
two functions. The warning indicator comes
on when the engine oil level is low and when
the engine oil pressure is low. The functions
are explained in the following sections.
Oil level warning
The warning indicator and the warning light
come on when the engine oil level is low.
If the warning indicator and the warning light
come on, place the snowmobile on a level
surface and allow it to idle for one minute.
If the warning indicator and the warning light
go off, the engine oil level is sufficient, howev-
er it is getting low. Add engine oil as soon as
possible.
If the warning indicator and the warning light
do not go off, check the engine oil level in the
oil tank (see page 78 for engine oil level
checking procedures), and add engine oil if
necessary.
If the warning indicator and the warning light
still remain on, have a Yamaha dealer check
the snowmobile.
Oil pressure warning
The warning indicator comes on and “OP-LO”
(oil pressure low) appears in the odometer
display if the engine oil pressure is low when
the engine is started. At the same time, the
engine speed is limited to less than the clutch
engagement speed until the warning indicator
goes off.
If the engine oil pressure remains low for one
minute, the engine stops. If this occurs, have
a Yamaha dealer check the snowmobile.
TIP
If there is no engine oil in the oil passages
when the engine is started, such as after the
engine oil is changed, the warning indicator
may come on and “OP-LO” may appear in the
odometer display for a few seconds until the
oil circulates through the engine. The snow-
mobile can be operated normally after the
warning indicator goes off.
1. Oil level/pressure warning indicator “”
2. Warning light “”
1. Oil level/pressure warning indicator “”
2. “OP-LO” (oil pressure low)
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U8HV10E0.book Page 22 Monday, May 16, 2011 1:15 PM