Kubota U17-3a Operating Instructions Manual page 135

Maintenance
Remove the coolant expansion reservoir (1) and drain it, clean-
ing it if necessary. Refit the reservoir.
Dispose of old coolant according to the applicable en-
vironmental protection regulations.
Fill the premixed coolant into the radiator and expansion reser-
voir. The antifreeze content should be -25 °C.
The antifreeze portion of the coolant should not ex-
ceed 50 %.
Do not operate the cooling system with pure water
(even in summer). The antifreeze also contains a cor-
rosion inhibitor.
Start the engine (page 66) and let it idle to warm up.
Stop the engine (page 67).
Check the coolant level (page 57), adding coolant if necessary.
Attach the engine compartment cover under the operator's seat.
Close the engine compartment cover.
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