Periodic maintenance and adjustment
77
instead of coolant, replace it with
coolant as soon as possible, other-
wise the cooling system will not be
protected against frost and corrosion.
If water has been added to the cool-
ant, have a Yamaha dealer check the
antifreeze content of the coolant as
soon as possible, otherwise the effec-
tiveness of the coolant will be re-
duced.
[ECS00493]
RST9N
RST1NTF / RST1NTFY
4.
Install the right side cover and the
shroud, or close the shroud.
Bleeding the cooling system
The cooling system must be bled if the cool-
ant reservoir becomes empty, if air can be
seen in the coolant reservoir, or if there is a
cooling system leak. Consult a Yamaha deal-
er.
NOTICE
ECS00501
Operating the engine with an improperly
bled cooling system can cause overheat-
ing and severe engine damage.
Replenishing the coolant
1.
Place the snowmobile on a level surface
and apply the parking brake.
2.
Remove the shroud, the right side cover,
and the top cover [RST1NTF /
RST1NTFY (see page 59 for the proce-
dures)], or open the shroud [RST9N (see
page 61 for the procedures)].
3.
Remove the coolant reservoir cap and
add coolant until it reaches the “COLD
LEVEL” mark.
RST9N
RST1NTF / RST1NTFY
1. “COLD LEVEL” mark
1. “COLD LEVEL” mark
1
1. “COLD LEVEL” mark
2. Coolant reservoir cap
1. “COLD LEVEL” mark
2. Coolant reservoir cap
2
1
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