Jack the front of the sled as high as you can. jack stands work well for this. Make sure the engine is higher than the rear seat. Run it at idle. get it hot/warm and then open up screw on thermostat cover. Why do you think there is air in the system?
1. Elevate the front of the snowmobile 30-60 cm (12-
2. Remove the coolant tank cap and check coolant
level. The coolant tank should be filled to the
coolant level line.
3. Install the coolant tank cap; then start the engine.
Run the engine at 3000-3500 RPM until the
bottom heat exchangers become hot to the touch.
Stop the engine and allow the system to cool.
4. Lower the front of the snowmobile and elevate the
rear of the snowmobile 12-14 in. Repeat the
procedures in step 3.
5. Check the coolant level. Add coolant as required
to the coolant tank (coolant tank should be filled to
coolant level line). Repeat procedure until coolant
level stabilizes in the coolant tank.
NOTE: If coolant is required, mix coolant for a
temperature of -36°C (-34°F). Follow mixing recommendations
of the manufacturer of the coolan
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