Cooling System - Yamaha FXNytro FX10RTRSZ Owner's Manual

Periodic maintenance and adjustment
1. Left lower cover
1. Left lower cover
21. Install the drive guard, the right side cov-
er, the left side cover, and the shroud.
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Cooling system

The coolant level should be checked before
each ride. In addition, the cooling system
must be bled at the intervals specified in the
periodic maintenance and lubrication chart.
EWS00390
WARNING
Do not remove the radiator cap when the
engine is hot. Scalding hot fluid and steam
may be blown out under pressure, which
could cause serious injury.
When the engine has cooled, place a thick
rag or towel over the radiator cap, and
slowly rotate the cap counterclockwise to
the detent. This procedure allows any re-
sidual pressure to escape. When the hiss-
54
ing sound has stopped, press down on the
cap while turning counterclockwise and
remove it.
1
To check the coolant level
1.
2.
1
1. Radiator cap
Place the snowmobile on a level surface
and apply the parking brake.
Check the coolant level in the coolant
reservoir when the engine is cold. If the
coolant level is below the "LOW" mark,
add coolant until it reaches the "FULL"
mark. (See the following section "Replen-
ishing the coolant" for more details.)
NOTICE: If coolant is not available,
use distilled water or soft tap water in-
stead. Do not use hard water or salt
water since it is harmful to the engine.
If water has been used instead of cool-
ant, replace it with coolant as soon as
possible, otherwise the cooling sys-
tem will not be protected against frost
and corrosion. If water has been add-
ed to the coolant, have a Yamaha deal-
er check the antifreeze content of the
coolant as soon as possible, other-
wise the effectiveness of the coolant
will be reduced.
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