10-2
10
Compression ratio 9.10 :1
Starting system Electric starter
Lubrication system Wet sump
Engine oil:
Type
Recommended engine oil classification API Service SE, SF, SG type or higherModel YXR66FAV
-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.
EE.book Page 2 Monday, July 11, 2005 2:32 PM
10-4
Spark plug:
Type/manufacturer DPR8EA-9/NGK
Spark plug gap 0.8–0.9 mm (0.031–0.035 in)
Clutch type: Wet, centrifugal automatic
Transmission:
Primary reduction system V-belt
Secondary reduction system Shaft drive
Secondary reduction ratio 41/21
× 24/18
× 33/9 (9.544)
Transmission type V-belt automatic
Operation Right hand operation
Reverse gear 25/17 (1.471)
Sub transmission ratio low 35/17 (2.058)
high 28/19 (1.473)
Chassis:
Frame type Steel tube frame
Caster angle 5.0°
Trail 26.0 mm (1.02 in)
Tire:
Ty p e Tu b e l e s s
Size front 25
× 8-12NHS
rear 25 × 10-12NHS Model YXR66FAV
EE.book Page 4 Monday, July 11, 2005 2:32 PM
