10-2
10
Carbon dioxide (CO2) level:Carbon dioxide (CO2) emissions (2016/1628):1015.0 g/kWh (YFM450FWB, YFM450FWBD)Engine:Combustion cycle:4-stroke
Cooling system: Liquid cooled
Valve train:
SOHC
Number of cylinders: Single cylinder
Displacement: 421 cm³
Bore × stroke:
84.5 × 75.0 mm (3.33 × 2.95 in)
Compression ratio: 10.0 : 1
Starting system: Electric starter
Lubrication system:
Wet sumpEngine oil:Recommended brand:
SAE viscosity grades:5W-30, 10W-30, 10W-40, 15W-40, 20W-40, 20W-50 Recommended engine oil grade:
API service SG type or higher, JASO standard MA
Quantity: Oil change: 2.30 L (2.43 US qt, 2.02 Imp.qt)
With oil filter removal: 2.40 L (2.54 US qt, 2.11 Imp.qt)
Final gear oil:Type:Yamaha Friction Modified Shaft Drive Gear Oil
Quantity: 0.38 L (0.40 US qt, 0.33 Imp.qt)0 10 30 50 70 90 110 130 F
–20 –10 0 10 20 30 40 50 CSAE 5W-30
SAE 10W-30
SAE 10W-40
SAE 15W-40
SAE 20W-40SAE 20W-50
UBB562E0.book Page 2 Thursday, March 14, 2019 9:59 AM
