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TECHNICAL SPECIFICATIONS – ENGINE »
10W/50
5W/40
JASO T903 MA
TEMPERATURE
0°C
32°F
ENGINE 990 LC8
Design
Liquid-cooled, 2-cylinder 4-stroke engine with 75° V arrangement with balancer shaft and electric starter
Displacement 999 cm
3
Bore / Stroke 101/62,4 mm
Compression ratio 11,5:1
Fuel unleaded fuel with at least RON 95 (USA: Premium RON 91) *
Valve timing 4 valves controlled over bucket tappet and 2 camshafts, camshaft drive with gears/chain
Valve diameter Intake: 38 mm Exhaust: 33 mm
Valve clearance, cold Intake: 0,10 - 0,15 mm Exhaust: 0,25 - 0,30 mm
Crankcase bearing Friction bearings (2 main bearings / 1 supporting bearing)
Conrod bearing Friction bearing
Piston pin bearing Dual-fuel bearing
Piston Light alloy – forged
Piston rings 1 compression ring, 1 taper face ring, 1 single-piece oil scraper ring with spiral-type expander
Engine lubrication Dry sump with 2 trochoidal pumps (pressure pump and suction pump)
Engine oil SAE 5W/40, 10W/50 (Motorex Power Synt 4T) #
Quantity of engine oil approx. 3.1 liters during oil/filter change
Primary drive Straight-toothed spur wheels 35 : 67
Clutch Multi-disc clutch in oil bath
Transmission 6-speed claw shifted
Gear ratio 1
st
gear 14:36
2
nd
gear 16:30
3
rd
gear 20:30
4
th
gear 21:27
5
th
gear 23:26
6
th
gear 25:26
Ignition system breakerless transistorized electronic ignition system with digital ignition advance
Ignition timing Map-controlled via TPS
Generator 12V 450W bei 6000 U/min
Spark plug NGK DCPR 8 E
Electrode distance 0,8 mm
Cooling system liquid cooled, permanent circulation of cooling liquid through water pump
Cooling liquid 2.1 liters, 50% antifreeze, 50% water, at least –25° C
Starting aid electric starter
#
PON / CLC RON / ROZ MON
87 91 83
91 Premium 95 87
RON = Pump Octane Number
CLC = Cost of Living Council
RON = Research Octane Number
ROZ = Research Oktan Zahl
MON = Motor Octane Number
*