2009 Yamaha Motorsports RS Viking Professional Owners Manual - Page 54

2009 Yamaha Motorsports RS Viking Professional Manual

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Periodic maintenance and adjustment 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 residual pressure to escape. When the hissing sound has stopped, press down on the cap while turning counterclockwise and remove it. 1. "FULL" mark 2. Coolant reservoir cap Bleeding the cooling system The cooling system must be bled of air if the coolant reservoir becomes empty, if air can be seen in the cooling system, or if there is a cooling system leak. Consult a Yamaha dealer. ECS00500 1. Radiator cap NOTICE Operating the engine with an improperly bled cooling system can cause overheating and severe engine damage. To check the coolant level 1. Place the snowmobile on a level surface and apply the parking brake. 2. Open the shroud. 3. Check the coolant level in the coolant reservoir when the engine is cold. If the coolant level is below the "LOW" mark, remove the coolant reservoir cap and add soft water until it reaches the "FULL" mark. (See the following section "Replenishing the coolant" for more details.) NOTICE: Hard water or salt water is harmful to the engine parts. You may use boiled or distilled water, if soft water is not available. Tap water can be used temporarily in an emergency. [ECS00491] Replenishing the coolant 1. Remove the coolant reservoir cap and add coolant until it reaches the "FULL" mark. 1. "FULL" mark 2. Coolant reservoir cap 48

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Periodic maintenance and adjustment
48
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-
ing sound has stopped, press down on the
cap while turning counterclockwise and
remove it.
To check the coolant level
1.
Place the snowmobile on a level surface
and apply the parking brake.
2.
Open the shroud.
3.
Check the coolant level in the coolant
reservoir when the engine is cold. If the
coolant level is below the “LOW” mark,
remove the coolant reservoir cap and add
soft water until it reaches the “FULL”
mark. (See the following section “Replen-
ishing the coolant” for more details.)
NOTICE:
Hard water or salt water is
harmful to the engine parts. You may
use boiled or distilled water, if soft wa-
ter is not available. Tap water can be
used temporarily in an emergency.
[ECS00491]
Bleeding the cooling system
The cooling system must be bled of air if the
coolant reservoir becomes empty, if air can be
seen in the cooling system, or if there is a
cooling system leak. Consult a Yamaha deal-
er.
NOTICE
ECS00500
Operating the engine with an improperly
bled cooling system can cause overheat-
ing and severe engine damage.
Replenishing the coolant
1.
Remove the coolant reservoir cap and
add coolant until it reaches the “FULL”
mark.
1.
Radiator cap
1.
“FULL” mark
2.
Coolant reservoir cap
1.
“FULL” mark
2.
Coolant reservoir cap