11-67F
Repair manual KTM LC4
Art.-Nr
. 3.206.024 -E
ENGINE
625 SXC / SMC
Design
Liquid-cooled single cylinder 4-stroke engine with balancer shaft
Displacement
625 cm
3
Bore / Stroke
101 / 78 mm
Ratio
11,7 : 1
Fuel
unleaded fuel with at least RON 95 (USA = Premium RON 91)
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: 32 mm
Valve clearence cold
Intake: 0,12 - 0,15 mm
Exhaust: 0,12 - 0,15 mm
Crank shaft bearing
2 cylinder roller bearing
Connecting rod bearing
needle bearing
Top end bearing
bronze bushing
Piston
forged aluminium alloy
Piston rings
1 compression ring, 1 taper face ring, 1 oil scraper ring
Engine lubrication
two Eaton-oilpumps
Engine oil quantity
appr. 2,1 liters including frame
Primary ratio
straight geared spur wheels 31 : 79 teeth
Clutch
multi disc clutch in oil bath
Transmission
5-speed claw shifted
Gear ratio
1
st
14:35
2
nd
15:24
3
rd
18:21
4
th
20:19
5
th
22:18
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 DCPR 8E
Spark plug gap
0,9 mm
Cooling system
liquid cooled, permanent rotation of cooling liquid through mechanic driven water pump
Cooling liquid
1 liter, 50% antifreeze, 50% destilled water, at least –25°C (–13°F)
Starting equipment
kick - electric starter
BASIC CARBURETOR SETTING
625 SXC/SMC
Type
Keihin FCR-MX 4138A
Carburator-setting number
4138A
Main jet
165
Jet needle
OBDVT (OBEKR)
Idling jet
42 (45)
Main air jet
200
Idling air jet
100
Needle position
5
th
from top (4
th
from top)
Starting jet
85
Mixture control screw open
2
Slide
15
Performance restrictor
slide stop
Stop pump membrane
858 / 2,15 mm
Hot start device
3,8 mm
TECHNICAL SPECIFICATIONS – ENGINE 625 SXC / SMC 2005
Содержание 400-660 LC4 1998-2005
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