8
Cooling System
These snowmobiles are equipped with a
closed liquid cooling system for engine
cooling. The cooling system should be
inspected daily for leakage and damage.
Also, the coolant level should be checked
daily. If leakage or damage is detected,
take the snowmobile to an authorized
Yamaha Snowmobile dealer for service.
If not under warranty, this service is at
the discretion and expense of the snow-
mobile owner.
When filling the cooling system, use an
ethylene glycol-based coolant/water mix-
ture which will satisfy the coldest antici-
pated weather conditions of your area in
accordance with the coolant manufac-
turer’s recommendations.
NOTE: The gurgling noise heard
when the engine is shut off from
the turbocharger area is normal.
The snowmobile is equipped with a
vapor tank to assist with cooling
the turbocharger after the engine
is off.
NOTE: If operating on ice or hard-
packed snow conditions, it is rec-
ommended that Ice Scratchers be
installed to reduce wear strip wear
and engine overheating.
For checking/filling cooling system, refer
to Coolant Level sub-section in the Main-
tenance section.
Battery
It is extremely important that the battery
be maintained at full charge at all times
and that the battery connections be clean
and tight. If charging the battery becomes
necessary, refer to Battery sub-section in
the Maintenance section.
Jump-Starting
NOTE: Yamaha does not recom-
mend jump-starting a snowmobile
with a dead battery but rather to
remove the battery, service it, and
correctly charge it; however, in an
emergency, it may be necessary to
jump-start a snowmobile. If so, use
the following procedure to carefully
and safely complete this procedure.
NOTE: To access the battery, the
seat must be removed.
1. For the snowmobile to be jump-
started, slide any terminal boots away.
2. Inspect the battery for any signs of
electrolyte leaks, loose terminals, or
bulging sides. Leaking or bulging
battery cases may indicate a frozen
or shorted battery.
3. Inspect the snowmobile to be used for
jump-starting to determine if voltage
and ground polarity are compatible.
The vehicle must have a 12-volt DC,
negative ground electrical system.
CAUTION
Always turn the ignition switch key
to the OFF position when the snow-
mobile is not being used. Leaving
the ignition switch in the ON posi-
tion will result in discharging the
battery and possible damage to the
battery.
WARNING
Improper handling or connecting of
a battery may result in severe injury
including acid burns, electrical
burns, or blindness as a result of an
explosion. Always remove rings and
watches. Any time service is per-
formed on a battery, the following
must be observed: keep sparks,
open flame, cigarettes, or any other
flame away. Always wear safety
glasses. Protect skin and clothing
when handling a battery. When ser-
vicing a battery in an enclosed
space, keep the area well-ventilated.
WARNING
If any of these conditions exist, DO
NOT attempt to jump-start, boost,
or charge the battery. An explosion
could occur causing serious injury.
CAUTION
Always make sure the electrical sys-
tems are of the same voltage and
ground polarity prior to connecting
jumper cables. If not, severe electri-
cal damage may occur.
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