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TECHNICAL DATA – ENGINE 400 EXC RACING 2004
Type
Design
Hubraum
Bore/Stroke
Ratio
Fuel
Valve timing
4
Camshaft
Valve diameter Intake
Valve diameter Exhaust
Valve clearence cold Intake
Valve clearence cold Exhaust
Crank shaft bearing
Connecting rod bearing
Top end bearing
Piston alluminium alloy -
Piston rings
Engine lubrication
Engine oil
Quantity of engine oil
Primary ratio
Clutch
Transmission claw shifted
Gear ratio
1
st
Gear
2
nd
Gear
3
rd
Gear
4
th
Gear
5
th
Gear
6
th
Gear
Ignition system
Generator
Spark plug
Spark plug gap
Cooling system
Cooling liquid
Starting equipment
BASIC CARBURATOR SETTING
Type
Carburator-setting number
Main jet
Jet needle
Idling jet
Main air jet
Idling air jet
Needle position
Starting jet
Mixture control screw open
Slide
Performance restrictor
Stop pump membrane
Hot start device
Liquid-cooled single cylinder 4-stroke engine with balancer shaft
unleaded fuel with at least RON 95 (USA = Premium RON 91)
4 valves over rocker arm and 1 overhead camshaft, camshaft drive through single chain
1 compression ring, 1 oil scraper ring
pressure circulation lubrication with two rotor pumps
full synthetic oil (Motorex Power Synt 4T 10W/50)
straight geared spur wheels 33:76 Z
contactless DC-CDI ignition with digital advanced system by KOKUSAN
liquid cooled, permanent rotation of cooling liquid through mechanically driven water pump
1 liter, 40% antifreeze, 60% water, at least -25° (-13° F)
400 EXC RACING
12 KW
Keihin FCR-MX 39
3900A
178
OBDVR
42
200
100
1
st
from top
85
1,25
15
Slide stop
858 / 2,15 mm
–
400 EXC
398 ccm
89 / 64 mm
11 : 1
595/0121
35 mm
30 mm
0.12 mm (0.0047 in)
0.12 mm (0.0047 in)
2 cylinder roller bearing
needle bearing
bronze bushing
cast
1.25 liters
multi disc clutch in oil bath
6-speed
14:34
17:31
19:28
22:26
24:23
26:21
12V 150W
NGK DCPR 8 E
0.6 mm (0.02367 in)
kick - electric starter
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