coolant YAMAHA GRIZZLY 660 2003 User Guide

8-57
3. Remove the coolant reservoir cap, and then
add coolant or distilled water to raise it to the
specified level.
4. Install the panel.CAUTION:_ Hard water or salt water is harmful to the en-
gine. You may use soft water if you can’t get
distilled water. _NOTE:_

If water is added, have a Yamaha dealer
check the antifreeze content of the coolant as
soon as possible.


The radiator fan operation is completely auto-
matic. It is switched on or off according to the
coolant temperature in the radiator.
_If your ATV overheats, see page 8-138 for details. Coolant reservoir capacity:
0.30 L
U5KM60.book Page 57 Thursday, June 21, 2001 2:40 PM

8-59 1. Coolant drain bolt
1. Boulon de vidange du liquide de refroidissement
1. Perno de drenaje del refrigerante
1. Trough
1. Feuille de papier repliée en forme de conduit
1. Pasante
EBU00977
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 panels E and F. (See pages 8-29 ~
8-31 for removal and installation procedures.)
3. Place a container under the engine, and then
remove the coolant drain bolt. (Use a trough
or a similar object as shown to prevent cool-
ant from spilling on the footrest.)
4. Remove the front carrier and panel C. (See
pages 8-23 and 8-27 for removal and installa-
tion procedures.)
U5KM60.book Page 59 Thursday, June 21, 2001 2:40 PM

8-61 1. Radiator cap
1. Bouchon du radiateur
1. Tapa del radiador
1. Coolant reservoir drain hose
1. Boulon de vidange du liquide de refroidissement
1. Manguera de drenaje del depósito de refrigerante
5. Remove the radiator cap.
6. Remove the coolant reservoir cap.
7. Disconnect the hose on the coolant reservoir
side, and then drain the coolant from the
coolant reservoir.
8. After draining the coolant, thoroughly flush
the cooling system with clean tap water.
9. 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)
U5KM60.book Page 61 Thursday, June 21, 2001 2:40 PM

8-63
10. Install the coolant reservoir hose.
11. Pour the recommended coolant into the radi-
ator until it is full.CAUTION:_ Hard water or salt water is harmful to the en-
gine. You may use soft water if you can’t get
distilled water. _
Recommended antifreeze:
High quality ethylene glycol antifreeze
containing corrosion inhibitors for aluminum
engines.
Antifreeze and water mixing ratio:
1:1
Total amount:
1.8 L
Coolant reservoir capacity
(up to the maximum level mark):
0.3 L
U5KM60.book Page 63 Thursday, June 21, 2001 2:40 PM

8-65
12. Install the radiator cap.
13. Start the engine and let it idle for several min-
utes. Stop the engine, and then check the
coolant level in the radiator. If it is low, add
more coolant until it reaches the top of the ra-
diator.
14. Fill the coolant reservoir with coolant up to
the maximum level.
15. Install the coolant reservoir cap and check for
coolant leakage.NOTE:_ If any leakage is found, ask a Yamaha dealer to in-
spect the cooling system. _16. Install the panels and the front carrier.
U5KM60.book Page 65 Thursday, June 21, 2001 2:40 PM

8-138
Engine overheatingNOTE:If it is difficult to get the recommended coolant, tap water can be temporarily used, provided that it is
changed to the recommended coolant as soon as possible.
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. Wait until the
engine has cooled.
Check the coolant level in the
reservoir tank and/or radiator.
Level is OK.Level is low, check the
cooling system for leakage.
No
leakage.Leakage.
Ask a Yamaha dealer to inspect
and repair the cooling system.Add coolant. (See NOTE.)
Restart the engine. If the engine overheats again, ask a
Yamaha dealer to inspect and/or repair the cooling system.
U5KM60.book Page 138 Thursday, June 21, 2001 2:40 PM

10-6
Headlight type: Krypton bulb
Bulb voltage, wattage
× quantity:
Headlight 12 V, 30 W / 30 W
× 2
Brake/tail light 12 V, 21 W / 5 W
× 1
Indicator light:
Neutral indicator light LED
× 1
Reverse indicator light LED
× 1
Coolant temperature warning light LED
× 1
Park position indicator light LED
× 1
High gear position indicator light LED
× 1
Low gear position indicator light LED
× 1
Differential gear lock indicator light LED
× 1
Specified fuses:
Main fuse 30 A
Headlight fuse 15 A
Ignition fuse 10 A
Auxiliary DC jack fuse 10 A
Four-wheel drive fuse 3 A
Signaling system fuse 10 A
Odometer fuse (backup) 10 AModel YFM660FP
U5KM60.book Page 6 Thursday, June 21, 2001 2:40 PM