2004 YAMAHA YFM660R drain bolt

8-23 1. Crankcase engine oil drain bolt
1. Boulon de vidange d’huile du carter
1. Perno de drenaje de aceite de motor del cárter
1. Engine oil tank drain bolt
1. Boulon de vidange du réservoir d’huile de moteur
1. Perno de drenaje del depósito aceite de motor
4. Remove the crankcase engine oil drain bolt.
5. Remove the engine oil tank filler cap and the
oil tank drain bolt.
6. Check the washers for damage, and replace
if necessary.NOTE:_ Skip steps 7–9 if the oil filter cartridge is not being
replaced. _
U5LP63.book Page 23 Monday, March 10, 2003 2:06 PM

8-25 1. Oil filter cartridge
2. Oil filter wrench
1. Cartouche du filtre à huile
2. Clé pour filtre à huile
1. Cartucho del filtro de aceite
2. Llave para filtros de aceite
1. O-ring
1. Joint torique
1. Junta tórica
7. Remove the oil filter cartridge with an oil filter
wrench.NOTE:_ An oil filter wrench is available at a nearby
Yamaha dealer. _8. Apply a thin coat of engine oil to the O-ring of
the new oil filter cartridge.NOTE:_ Make sure that the O-ring is properly seated. _9. Install a new oil filter cartridge with an oil filter
wrench, and then tighten it to the specified
torque with a torque wrench.
10. Install the crankcase engine oil drain bolt and
the engine oil tank drain bolt, and then tighten
them to the specified torques. Tightening torque:
Oil filter cartridge:
17 Nm (1.7 m·kgf)
U5LP63.book Page 25 Monday, March 10, 2003 2:06 PM

8-27
11. Pour only 1.75 L of the specified amount of
recommended engine oil through the engine
oil tank filler hole, insert the dipstick, and then
tighten the oil tank filler cap.
12. Start the engine, rev it several times, and
then turn it off.
13. Remove the engine oil tank filler cap, and
then gradually fill the oil tank with the remain-
ing oil quantity while regularly checking the oil
level on the dipstick.
14. Install the engine oil tank filler cap.Tightening torques:
Crankcase engine oil drain bolt:
30 Nm (3.0 m·kgf)
Engine oil tank drain bolt:
25 Nm (2.5 m·kgf)
U5LP63.book Page 27 Monday, March 10, 2003 2:06 PM

8-37 1. Coolant drain bolt
1. Boulon de vidange du liquide de refroidissement
1. Perno de drenaje de refrigerante
1. Radiator cap
1. Bouchon de radiateur
1. Tapa del radiador
EBU10241
Changing the coolant
WARNING
_ Wait for the engine and radiator to cool before
removing the radiator cap. You could be
burned by hot fluid and steam blown out under
pressure. Always put a thick rag over the cap
when opening. Allow any remaining pressure
to escape before completely removing the cap. _1. Place the ATV on a level surface.
2. Remove panel A. (See page 8-15 for panel
removal and installation procedures.)
3. Place a container under the engine, and then
remove the coolant drain bolt.
4. Remove the radiator cap.
U5LP63.book Page 37 Monday, March 10, 2003 2:06 PM

8-39 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.
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. Tightening torque:
Coolant drain bolt:
10 Nm (1.0 m·kgf)
U5LP63.book Page 39 Monday, March 10, 2003 2:06 PM