Yamaha RS90GTZ Service Manual page 32

COOLING SYSTEM
• Fill the coolant up to the full level
coolant reservoir and up to the cold level
in the coolant
RS90LTGTZ)
• Fill the coolant up to the cold level
coolant reservoir. (RST90GTZ)
RS90GTZ/RS90LTGTZ
RST90GTZ
• Install the coolant reservoir cap.
Apply and lock the parking brake. Start the
engine and run it at less than the clutch
engagement speed until the coolant circu-
lates (approximately 3 ~ 5 minutes). The rear
heat exchanger will be warm to the touch.
WARNING
To avoid severe injury or death:
• Make sure the snowmobile is securely
supported with a suitable stand.
• Do not exceed clutch engagement speed.
Drive line damage and excessive V-belt
wear could occur, or the snowmobile
could unexpectedly move forward if the
clutch engages.
• Operate the engine only in a well-venti-
lated area.
• Remove the coolant reservoir cap and bleed
the cooling system again, as described
above.
No air bubbles → OK.
• Pour coolant into the coolant recovery
until the coolant level reaches the "COLD
LEVEL" level
RS90LTGTZ).
• Pour coolant into the coolant reservoir
until the coolant level reaches the "COLD
LEVEL" level mark
RS90GTZ/RS90LTGTZ
RST90GTZ
3. Install
• All removed parts
TIP
For installation, reverse the removal proce-
dure.
2-9
INSP
ADJ
in the
recovery. (RS90GTZ/
in the
mark (RS90GTZ/
(RST90GTZ).