2008 Yamaha Motorsports RS Viking Professional Owners Manual - Page 54

2008 Yamaha Motorsports RS Viking Professional Manual

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Periodic maintenance ECS00470 CAUTION: If oil is leaking or the oil level warning indicator comes on when the engine is running, immediately turn the engine off and have a Yamaha dealer check the snowmobile. Continuing to operate the engine under such conditions could cause severe engine damage. 19. Install the bottom panel and right side cover, and then close the shroud. ESU12020 1. Radiator cap Cooling system The coolant level should be checked before each ride. In addition, the cooling system must be bled of air 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 residual pressure to escape. When the hissing sound has stopped, press down on the cap while turning counterclockwise and remove it. To check the coolant level 1. Open the shroud. 2. 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.) 1. "FULL" mark 2. Coolant reservoir cap ECS00490 CAUTION: G G 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. 48

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Periodic maintenance
48
CAUTION:
ECS00470
If oil is leaking or the oil level warning indi-
cator comes on when the engine is run-
ning, immediately turn the engine off and
have a Yamaha dealer check the snowmo-
bile. Continuing to operate the engine un-
der such conditions could cause severe
engine damage.
19. Install the bottom panel and right side
cover, and then close the shroud.
ESU12020
Cooling system
The coolant level should be checked before
each ride. In addition, the cooling system
must be bled of air at the intervals specified in
the periodic maintenance and lubrication
chart.
WARNING
EWS00390
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-
ing sound has stopped, press down on the
cap while turning counterclockwise and
remove it.
To check the coolant level
1.
Open the shroud.
2.
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.)
CAUTION:
ECS00490
●
Hard water or salt water is harmful to the
engine parts. You may use boiled or dis-
tilled water, if soft water is not available.
●
Tap water can be used temporarily in an
emergency.
1.
Radiator cap
1.
“FULL” mark
2.
Coolant reservoir cap