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22.1
Engine
Design
Displacement
Stroke
Bore
Compression ratio
Idle speed
Coolant temperature: ≥ 70 °C (≥ 158 °F)
Control
Valve diameter, intake
Valve diameter, exhaust
Valve play, cold
Crankshaft bearing
Conrod bearing
Piston pin bearing
Pistons
Piston rings
Engine lubrication
Primary transmission
1-cylinder 4-stroke engine, water-cooled
690 cm³ (42.11 cu in)
84.5 mm (3.327 in)
102 mm (4.02 in)
12.6:1
1,550 ... 1,650 rpm
OHC, 4 valves controlled via rocker arm, chain drive
40 mm (1.57 in)
34 mm (1.34 in)
0.07 ... 0.13 mm (0.0028 ... 0.0051 in)
2 roller bearings
Needle bearing
Piston pin with DLC coating
Forged light alloy
1 L-ring, 1 tapered compression piston ring, 1 oil
scraper ring
Semi-dry sump lubrication system with two rotor
pumps
36:79
TECHNICAL DATA 22
237
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