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TECHNICAL DATA – ENGINE
TYPE
Design
Displacement
Bore / Stroke
Ratio
Fuel
Valve timing
Valve diameter
Valve clearence cold
Crank shaft bearing
Connecting rod bearing
Top end bearing
Piston
Piston rings
Engine lubrication
Quantity of engine oil
Engine oil
Primary ratio
Clutch
26
Transmission
Gear ratios
Ignition system
Ignition timing
Generator
Spark plug
Spark plug gap
Cooling system
Cooling liquid
Starting equipment
BASIC CARBURETOR SETTING
Type
Main jet
Jet needle
Idling jet
Main air jet
Idling air jet
Needle clip position from top
Starting jet
Mixture control screw open
Throttle valve
Performance restrictor
Stop pump membrane
»
660 LC4
Liquid-cooled single cylinder 4-stroke engine with balancer shaft and electric starter
653,7 cm
3
102/80 mm
11,6:1
unleaded premium gasoline with a least RON 95
4 valves over rocker arm and 1 overhead camshaft, camshaft drive through single chain
Intake: 36 mm
Exhaust: 32 mm
Intake: 0.10 mm
Exhaust: 0.10 mm
2 cylinder roller bearing
needle bearing
bronze bushing
forged aluminium alloy
1 compression ring, 1 taper face ring, 1 oil scraper ring
2 Eaton-Oilpumps
SAE 10W/50 (Motorex Power Synt 4T)
2,2 liters including frame
straight geared spur wheels 31 : 79 teeth
multi disc clutch in oil bath
5-speed claw shifted
1. Gear 33:15
2. Gear 24:15
3. Gear 21:18
4. Gear 19:20
5. Gear 18:22
contactless DC- CDI ignition with digital advanced system type KOKUSAN
adjustment to max. 33° BTDC at 8500 rpm
12V 200W
NGK DR 9 EA
0,9 mm
liquid cooled, permanent rotation of cooling liquid through mechanic driven water pump
1,8 liter, 50% antifreeze, 50% water, at least –25° C (–13° F)
electric starter
660 Rally (throttled)
Keihin CR 39
190
OBDVR
48
200
100
III
85
2
15
24,5
3,2 mm
660 Rally (open)
Keihin CR 39
190
OBDVR
52
200
100
III
85
2
15
–
3,2 mm
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