Control functions
24
ESU10501
Knock control system indicator
light “ ”
This snowmobile is equipped with a system
which detects engine knocking in order to pro-
tect the engine from damage.
The knock control system indicator light
comes on if knocking is detected, then flashes
if the knocking increases.
After the knocking has stopped, the knock
control system indicator light goes off.
NOTICE
ECS00031
●
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 possi-
ble.
TIP
To help prevent knocking, use premium un-
leaded gasoline only. (See page 34 for more
details.)
ESU10493
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.
The snowmobile can be shifted into drive or
reverse by pushing the drive select switch.
(See page 28 for drive select switch opera-
tion.)
ESU10434
Fuel meter and grip/thumb
warmer level indicator
The fuel meter and grip/thumb warmer level
indicator have eight segments which show
the amount of fuel remaining in the fuel tank,
the grip warmer level, or the thumb warmer
level.
1. Knock control system indicator light “
”
1. Drive select switch
2. Drive indicator light “
”
3. Reverse indicator light “
”
U8GKS6E0.book Page 24 Tuesday, April 17, 2012 8:48 AM
