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■ Engine
Bore x stroke 3.78 x 2.44 in (96.0 x 62.1 mm)
Displacement 27.4 cu-in (449 cm
3
)
Compression
ratio
12.0 : 1
Valve clearance
(cold)
Intake
0.004 ± 0.001 in (0.11 ± 0.03
mm)
Exhaust
0.011 ± 0.001 in (0.28 ± 0.03
mm)
Recommended
engine oil
API Service Classification SG or higher except
oils labeled as energy conserving or resource
conserving on the circular API service label,
SAE 10W-30, JASO T 903 standard MA, Pro
Honda GN4 4-stroke oil (USA & Canada) or
Honda 4-stroke oil, or an equivalent
motorcycle oil
Engine oil
capacity
After draining 1.16 US qt (1.10 L)
After draining
and oil filter
change
1.22 US qt (1.15 L)
After
disassembly
1.53 US qt (1.45 L)
Idle speed
1,800 ± 100
rpm
■ Cooling system
Recommended
coolant
Pro Honda HP Coolant
Cooling capacity
After
draining
1.20 US qt (1.14 L)
After
disassembly
1.31 US qt (1.24 L)
■ Drive train
Primary reduction 2.357
Gear ratio
1st 2.357
2nd 1.705
3rd 1.300
4th 1.090
5th 0.916
6th 0.793
Final reduction 3.923
Gear shift pattern
Left foot-operated return system
1-N-2-3-4-5-6
Specifications
Specifications
114
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