8-145
EBU00413
Troubleshooting
Although Yamaha machines receive a rigid in-
spection before shipment from the factory, trouble
may occur during operation.
Any problem in the fuel, compression, or ignition
systems can cause poor starting and loss of pow-
er. The troubleshooting chart describes a quick,
easy procedure for making checks. If your ma-
chine requires any repair, take it to a Yamaha
dealer.
The skilled technicians at a Yamaha dealership
have the tools, experience, and know-how to prop-
erly service your machine. Use only genuine
Yamaha parts on your machine. Imitation parts
may look like Yamaha parts, but they are often in-
ferior.
Consequently, they have a shorter service life and
can lead to expensive repair bills.
WARNING
Do not smoke when checking the fuel system.
Fuel can ignite or explode, causing severe in-
jury or property damage. Make sure there are
no open flames or sparks in the area, including
pilot lights from water heaters or furnaces.
U2C660.book Page 145 Monday, April 11, 2005 10:29 AM
10-2
10
Compression ratio 9.1 :1
Starting system Electric and recoil starter
Lubrication system Wet sump
Engine oil:
Type
Recommended engine oil classification API Service SE, SF, SG type or higherModel YFM66FA
-20˚ -10˚ 0˚
10˚20˚ 30˚40˚50˚C
10W/30
15W/4020W/4020W/50
10W/40
5W/30
CAUTION:
In order to prevent clutch slippage (since the en-
gine oil also lubricates the clutch), do not mix any
chemical additives. Do not use oils with a diesel
specification of “CD” or oils of a higher quality
than specified. In addition, do not use oils labeled
“ENERGY CONSERVING II” or higher.
U2C660.book Page 2 Monday, April 11, 2005 10:29 AM
10-8
Taux de compression 9,1 : 1
Système de démarrage Démarreur électrique et à réenroulement
Système de graissage Carter humide
Huile de moteur:
Type
Classification d’huile de moteur recommandée API Service de type “SE”, “SF”, “SG” ou supérieur Modèle YFM66FA
-20˚ -10˚ 0˚
10˚20˚ 30˚40˚50˚C
10W/30
15W/4020W/4020W/50
10W/40
5W/30
ATTENTION:
Ne pas mélanger d’additif chimique à l’huile afin d’éviter
tout patinage de l’embrayage, car l’huile moteur lubrifie
également l’embrayage. Ne pas utiliser des huiles de grade
diesel “CD” ni des huiles de grade supérieur à celui spéci-
fié. S’assurer également de ne pas utiliser une huile por-
tant la désignation “ENERGY CONSERVING II” ou la
même désignation avec un chiffre plus élevé.
U2C660.book Page 8 Monday, April 11, 2005 10:29 AM
