Yamaha YFZ 50 Owner's Manual page 120

Recommended engine oil grade:
API service SG type or higher, JASO standard MA
0 10 30
SAE 5W-30
SAE 10W-30
–20 –10 0
Quantity:
Oil change:
0.80 L (0.85 US qt, 0.70 Imp.qt)
Transmission oil:
Type:
SAE 80W-90
Quantity:
0.35 L (0.37 US qt, 0.31 Imp.qt)
Fuel:
Recommended fuel:
11
Regular unleaded gasoline (Gasohol [E10] acceptable)
Minimum research octane:
91
Fuel tank capacity:
5.6 L (1.5 US gal, 1.2 Imp.gal)
50 70 90 110
SAE 10W-40
SAE 15W-40
SAE 20W-40
SAE 20W-50
10 20 30 40
Fuel reserve amount:
0.7 L (0.18 US gal, 0.15 Imp.gal)
Carburetor:
130 ˚F
Type × quantity:
VM12 × 1
Front tire:
Size:
AT16x6.5-7
Manufacturer/model:
DURO/DI2040
Rear tire:
Size:
AT16x7-7
Manufacturer/model:
50 ˚C
DURO/DI2041
Front brake:
Type:
Mechanical leading, trailing drum brake
Rear brake:
Type:
Mechanical leading, trailing drum brake
Front suspension:
Type:
Swing axle
Rear suspension:
Type:
Swingarm
Electrical system:
System voltage:
12 V
11-2