KTM 690 ENDURO EU - Manual (Page 154)

TECHNICAL DATA - ENGINE
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15 TECHNICAL DATA - ENGINE
Design 1-cyliner 4-stroke engine, water-cooled
Displacement 654 cm³ (39.91 cu in)
Stroke 80 mm (3.15 in)
Bore 102 mm (4.02 in)
Compression ratio 11,8:1
Control OHC, 4 valves controlled via rocker arm, chain drive
Valve diameter, intake 40 mm (1.57 in)
Valve diameter, exhaust 34 mm (1.34 in)
Valve play, cold 0.07… 0.13 mm (0.0028… 0.0051 in)
Crankshaft bearing 2 roller bearings
Conrod bearing Needle bearing
Piston pin bearing Bronze bush
Pistons Forged light alloy
Piston rings 1 L-ring, 1 tapered compression piston ring, 1 oil scraper ring
Engine lubrication Pressure circulation lubrication with 2 rotor pumps
Primary transmission 36:79
Clutch APTC antihopping clutch in oil-bath / hydraulically actuated
Gearbox 6-gears, claw-shifted
Transmission ratio
1st gear 14:35
2nd gear 16:28
3rd gear 21:28
4th gear 21:23
5th gear 23:22