Yamaha YXR660FAS Owner's Manual page 144

Engine oil:
Type
Recommended engine oil classification
Quantity:
Without oil filter cartridge replacement
With oil filter cartridge replacement
Model
0° 10° 30°
YAMALUBE 4 (10W30) or SAE 10W30
SAE 5W30
-20° -10°
API Service SE, SF, SG type or higher
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.
2.10 L (1.85 Imp qt, 2.22 US qt)
2.20 L (1.94 Imp qt, 2.33 US qt)
10-2
YXR660FA
50° 70° 90°
YAMALUBE 4 (20W40) or SAE 20W40
0° 10° 20° 30°
110° 130°F
40° 50°C