ENGINE SPECIFICATIONS
2-2
EAM20128
ENGINE SPECIFICATIONS
Engine
Combustion
cycle
4-stroke
Cooling system
Liquid cooled
Valve
train
DOHC
Displacement
450
cm³
Number of cylinders
Single cylinder
Bore
stroke
97.0
60.8 mm (3.82
2.39 in)
Compression ratio
13.0 : 1
Starting system
Electric starter
Fuel
Recommended fuel
Unleaded gasoline (E10 acceptable)
Octane number (RON)
95
Fuel tank capacity
7.9 L (2.1 US gal, 1.7 Imp.gal)
Fuel reserve amount
2.0 L (0.53 US gal, 0.44 Imp.gal)
Engine oil
Recommended
brand
YAMALUBE
SAE viscosity grades
10W-40, 10W-50, 15W-40, 20W-40 or 20W-50
Recommended engine oil grade
API service SG type or higher, JASO standard
MA
Lubrication
system
Wet
sump
Engine oil quantity
Oil change
0.63 L (0.67 US qt, 0.55 Imp.qt)
With oil filter removal
0.65 L (0.69 US qt, 0.57 Imp.qt)
Quantity (disassembled)
0.90 L (0.95 US qt, 0.79 Imp.qt)
Cooling system
Coolant quantity
Radiator (including all routes)
1.03 L (1.09 US qt, 0.91 Imp.qt)
Spark plug(s)
Manufacturer/model
NGK/LMAR8G
Spark plug gap
0.7–0.8 mm (0.028–0.031 in)
Valve
Valve clearance (cold)
Intake
0.10–0.17 mm (0.0039–0.0067 in)
Exhaust
0.15–0.22 mm (0.0059–0.0087 in)
Clutch
Clutch type
Wet, multiple-disc
Clutch lever free play
7.0–12.0 mm (0.28–0.47 in)
Friction plate 1 thickness
2.92–3.08 mm (0.115–0.121 in)
Wear limit
2.82 mm (0.111 in)
Plate quantity
6 pcs
Friction plate 2 thickness
2.92–3.08 mm (0.115–0.121 in)
Wear limit
2.82 mm (0.111 in)
Plate quantity
2 pcs
Clutch plate thickness
1.50–1.70 mm (0.059–0.067 in)
Plate quantity
7 pcs
Warpage limit
0.10 mm (0.004 in)
Clutch spring free length
48.00 mm (1.89 in)
Clutch spring free length limit
45.60 mm (1.80 in)
Summary of Contents for WR450F 2022
Page 8: ......
Page 15: ...LOCATION OF IMPORTANT LABELS 1 5...
Page 16: ...LOCATION OF IMPORTANT LABELS 1 6 AUS NZL ZAF EUR...
Page 90: ...ELECTRICAL SYSTEM 3 32...
Page 134: ...CLUTCH 5 7...
Page 138: ...FUEL TANK 6 3...
Page 146: ...ELECTRICAL COMPONENTS 7 7...
Page 160: ...SELF DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE 8 13...
Page 170: ...CHASSIS 9 9...
Page 172: ...PRINTED IN JAPAN E...