11-38E
TECHNICAL DATA – ENGINE 400/640 LC4-E, 640 ADVENTURE, DUKE 2001
Type
400 LC4-E
640 LC4-E
Design
Liquid-cooled single cylinder 4-stroke engine with balancer shaft and electric starter
Displacement
398 ccm
624,6 ccm
Bore / Stroke
89 / 64 mm
101 / 78 mm
Ratio
10,8 : 1
11,0 : 1
Fuel
unleaded premium gasoline with a least RON 95
Valve timing
4 valves over rocker arm and 1 overhead camshaft, camshaft drive through single chain
Camshaft
249/1
Valve diameter
Intake: 36 mm Exhaust: 30 mm
Valve clearence cold
Intake: 0.20 mm Exhaust: 0.20 mm
Intake: 0.15 mm Exhaust: 0.15 mm
Crank shaft bearing
2 cylinder roller bearing
Connecting rod bearing
needle bearing
Top end bearing
bronze bushing
Piston
forged/cast aluminium alloy
Piston rings
1 compression ring, 1 taper face ring, 1 oil scraper ring
Engine lubrication
2 Eaton-Oilpumps
Engine oil
2.1 liters including frame
Primary ratio
straight geared spur wheels 30 : 81 teeth
Clutch
multi disc clutch in oil bath
Transmission
5-speed claw shifted
Ignition system
contactless DC- CDI ignition with digital advanced system type KOKUSAN
Ignition timing
adjustment to max. 38° BTDC at 6000 rpm
Generator
12V 200W
Spark plug
NGK DPR8 EA9
Spark plug gap
0.9 mm
Cooling system
liquid cooled, permanent rotation of cooling liquid through mechanic driven water pump
Cooling liquid
1 liter, 40% antifreeze, 60% water, at least –25° C (–13° F)
Starting equipment
electric starter, kick starter
15 t
16 t for chain
17 t
5
/
8
x
1
/
4
"
38 t
40 t for chain
42 t
5
/
8
x
1
/
4
"
45 t
48 t
30:81
Primary
ratio
Transmission
Available chain
drive sprockets
Available final
drive sprockets
GEAR RATIOS
1st gear
14:35
2nd gear 15:24
3rd gear
18:21
4th gear
20:19
5th gear
22:18
Original final
drive ratio
15:45
16:42
17:38
17:42
Содержание 400-660 LC4 1998-2005
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