23 TECHNICAL DATA
112
23.1 Engine
Design 1-cylinder 4-stroke engine, water-cooled
Displacement 373 cm³ (22.76 cu in)
Stroke 60 mm (2.36 in)
Bore 89 mm (3.5 in)
Compression ratio 12.6:1
Control DOHC, four valves controlled via cam lever, chain
drive
Intake valve diameter 36 mm (1.42 in)
Exhaust valve diameter 29 mm (1.14 in)
Valve clearance, intake, cold 0.10 … 0.15 mm (0.0039 … 0.0059 in)
Valve clearance, exhaust, cold 0.15 … 0.20 mm (0.0059 … 0.0079 in)
Crankshaft bearing 2 slide bearings
Conrod bearing Sleeve bearing
Pistons Forged light alloy
Piston rings 1 compression ring, 1 tapered compression piston
ring, 1 oil scraper ring
Engine lubrication Pressure circulation lubrication with 2 trochoidal
pumps
Primary transmission 30:80
Clutch Slipper clutch in oil bath/mechanically operated
Transmission 6-gear transmission, claw shifted
Transmission ratio
1st gear 12:32
2nd gear 14:26
3rd gear 19:27
4th gear 21:24
5th gear 23:22
6th gear 25:21
Mixture preparation Electronic fuel injection
Ignition Contactless controlled fully electronic ignition with
digital ignition adjustment
Alternator 12 V, 230 W
Spark plug BOSCHVR6NEU
Spark plug electrode gap 1 mm (0.04 in)
Cooling Water cooling, permanent circulation of coolant by
water pump
Idle speed 1,680 ± 50 rpm
Starting aid Starter motor
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