23 TECHNICAL DATA
160
23.1
Engine
Design
2-cylinder 4-stroke Otto engine, 75° V arrangement,
water-cooled
Displacement
1,301 cm³ (79.39 cu in)
Stroke
71 mm (2.8 in)
Bore
108 mm (4.25 in)
Compression ratio
13.5:1
Idle speed
1,400 … 1,600 rpm
Control
DOHC, 4 valves per cylinder, chain-driven
Valve - valve plate diameter
Intake
42 mm (1.65 in)
Exhaust
34 mm (1.34 in)
Valve clearance
Intake at: 20 °C (68 °F)
0.10 … 0.15 mm (0.0039 … 0.0059 in)
Exhaust at: 20 °C (68 °F)
0.25 … 0.30 mm (0.0098 … 0.0118 in)
Crankshaft bearing
Sleeve bearing
Conrod bearing
Sleeve bearing
Piston
Forged light alloy
Piston ring
1 upper compression (rectangular) ring, 1 lower com-
pression ring, 1 oil scraper ring
Engine lubrication
Dry sump lubrication system with 3 trochoidal pumps
Primary transmission
40:76
Clutch
Antihopping clutch in oil bath/hydraulically operated
Transmission
6-gear transmission, claw shifted
Transmission ratio
1st gear
12:35
2nd gear
15:32
3rd gear
18:30
4th gear
20:27
5th gear
24:27
6th gear
27:26
Mixture preparation
Electronic fuel injection
Ignition system
Contactless controlled fully electronic ignition with
digital ignition adjustment
Alternator
12 V, 450 W
Spark plug
Inside spark plug
NGK LKAR9BI
‑
10
Outside spark plug
NGK LMAR7DI
‑
10
Electrode gap, spark plug
1 mm (0.04 in)
Cooling
Water cooling, permanent circulation of coolant by
water pump
Cold start device
Starter motor
