Husqvarna TC449 Workshop Manual page 341

1 edition (08-2010) _Rev. 11-2010
st
ENGINE COOLING
Coolant level check
Coolant takes the heat from the piston-cylinder-and-head assembly and transfers
it to the radiator, where it is released to the atmosphere. Checking coolant level at
regular periods is critical to ensuring proper operation of the cooling system.
1
Without cooling medium (water), no heat exchange occurs between
cylinder head and radiator. The cylinder and piston assembly will
overheat and seize and in the worst scenario, crankshaft damage
may result.
If the event of engine overheating, check that the radiator is full.
Level in the radiator must be checked from cold (see Section D).
In the event you need to check level when the engine is hot, be sure to discharge
pressure gradually.
The radiator cap (1) has a pressure-relief position to depressurize the system
safely.
H006199
Failure to follow the above instructions will create a risk of scalding
for operator and any persons standing nearby.
A. Coolant level
B. Breather hose
N.3