Honda NT650 Owner's Manual page 89

ENGINE
Bore and stroke
Compression ratio
Displacement
Spark plug
Standard
For cold climate
(Below 5 °C, 41 °F)
For extended high speed
riding
Spark plug gap
Idle speed
Valve clearance (cold)
79.0 x 66.0mm (3.11 x 2.60in)
9.4:1
647 cm
DPR8EA - 9(NGK)
X24EPR - U9(ND)
DPR7EA — 9(NGK)
X22EPR - U9(ND)
DPR9EA—9(NGK)
X27EPR—U9(ND)
0.8- 0.9 mm (0.03- 0.04 in)
l,200±100 rpm
Intake 0.15 mm (0.006 in)
Exhaust 0.20 mm (0.008 in)
3
(39.5 cu-in)
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