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Drain and flush the cooling system at least every two years.
Having drained off all coolant, close drain tap or replace plug. Fill system with clean water.
Start engine and run until it reaches operating temperature.
Turn cab heater on and leave on until cleaning of cooling system is finished.
Stop engine and drain system immediately before rust and sediment deposits settle.
Close drain tap or replace plug. Clean system with commercial cooling system cleaner, following the instructions supplied with the cleaner.
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Drain cooling system cleaner and refill system again with clean water. Shut off engine when water reaches operating temperature and drain system again.
IMPORTANT:
The cooling system must always be filled with John Deere COOL-GARD
™
, irrespective of the season.
Refill system with the specified coolant (see "Engine Coolant").
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