Control functions
14
TIP
Drive the snowmobile at low speeds when
the low coolant temperature indicator light is
on. If the engine speed is too high, maximum
engine speed is reduced to protect the en-
gine.
ESU10502
Knock control system indicator
light “ ”
This snowmobile is equipped with a system
which detects engine knocking in order to
protect the engine from damage.
The knock control system indicator light
comes on if knocking is detected, then flash-
es if the knocking increases.
After the knocking has stopped, the knock
control system indicator light goes off.
NOTICE
ECS00032
If the knock control system indicator
light comes on, the fuel tank may not
have been filled with the recommended
fuel. Reduce the engine speed to 6000
r/min or less. As soon as possible, stop
the engine, let it cool sufficiently, and
then drain the fuel and refuel with the
recommended fuel.
If the knock control system indicator
light is flashing, have a Yamaha dealer
check the snowmobile as soon as pos-
sible.
TIP
To help prevent knocking, use premium un-
leaded gasoline only. (See page 24 for more
details.)
ESU10494
Drive indicator light “ ” and re-
verse indicator light “ ”
These indicator lights show whether the
snowmobile is shifted into drive or reverse.
The drive indicator light comes on when the
transmission is in drive (forward).
The reverse indicator light comes on when
the transmission is in reverse.
1. Low coolant temperature indicator
light “
”
1. Knock control system indicator light “
”
1. Drive select switch
2. Drive indicator light “
”
3. Reverse indicator light “
”
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