Yamaha RS90GTZ Service Manual page 29

COOLING SYSTEM
7. Remove:
• Lower rear cover
8. Disconnect:
• Rear heat exchanger inlet hose
• Rear heat exchanger outlet hose
9. Drain the coolant.
TIP
Lift up the front of the snowmobile to drain the
coolant completely.
WARNING
Coolant is poisonous. It is harmful or fatal
if swallowed.
• If coolant is swallowed, induce vomiting
immediately and get immediate medical
attention.
• If coolant splashes in your eyes, thor-
oughly wash them with water and consult
a doctor.
• If coolant splashes on your skin or
clothes, quickly wash it away with soap
and water.
10.Connect:
• Thermostat outlet hose
• Radiator outlet hose
(RS90GTZ/RS90LTGTZ)
• Right heat exchanger inlet hose
(RST90GTZ)
11.Connect:
• Rear heat exchanger inlet hose
• Rear heat exchanger outlet hose
2-6
INSP
ADJ