Yamaha YFM660R Owner's Manual page 306

1. Coolant reservoir cap
2. Hose
1. Bouchon du vase d'expansion
2. Flexible
1. Tapa del depósito de refrigerante
2. Manguera
5. Remove the coolant reservoir cap.
6. Disconnect the hose on the coolant reservoir
side, and then drain the coolant from the
coolant reservoir.
7. After draining the coolant, thoroughly flush
the cooling system with clean tap water.
8. Replace the coolant drain bolt washer if it is
damaged, and then tighten the coolant drain
bolt to the specified torque.
Tightening torque:
Coolant drain bolt:
10 Nm (1.0 m·kgf)
9. Install the coolant reservoir hose.
10. Pour the recommended coolant into the radi-
ator until it is full.
11. Pour the recommended coolant into the cool-
ant reservoir to the maximum level mark.
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