Radiator Cap; Thermostat - BRP BOMBARDIER DS250 2006 Shop Manual

Section 03 ENGINE
Subsection 06 (COOLING SYSTEM)
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Run engine until air bubbles have all escaped from
bleed nipple.
Stop engine. Reinstall bleed tube.
Carefully remove radiator cap.
WARNING
Let engine cool down. Otherwise, coolant
under pressure will rush out and you might
get burned.
Run engine.
Ensure there is no air bubbles in coolant and that
level is stable.
Stop engine.
Refill radiator as necessary.
Reinstall radiator cap.
Adjust coolant level in coolant reservoir.

RADIATOR CAP

Test
Use a suitable pressure tester and check radiator
cap. It should stand a pressure of 76 - 103 kPa
(11 - 15 PSI) and release pressure above that val-
ue.

THERMOSTAT

Removal
Drain cooling system.
Remove thermostat retaining screws.
54
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Pull thermostat out.
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Test
Visually inspect thermostat for damage.
Put thermostat in a container filled with coolant
and heat container. Use a suitable thermometer
to measure coolant temperature.
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