
TECHNICAL DATA – ENGINE
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BASIC CARBURATOR SETTING
250 XC-F USA
250 XCF-W USA
250 EXC-F
250 EXC-F SIXDAYS
Type
Keihin FCR-MX 3900G Keihin FCR-MX 3900G Keihin FCR-MX 3900G Keihin FCR-MX 3900G
Main jet
168
168
168
172
Jet needle
OBETP
OBEKT
OBEKT
OBETP
Idling jet
40
40
40
40
Main air jet
200
200
200
200
Idling air jet
100
100
100
100
Needle position
5th from top
2nd from top
2nd from top
5th from top
Starting jet
85
85
85
85
Mixture control screw open
1.25
0.75
0.75
1.25
Slide
15
15
15
15
Performance restrictor
–
–
Slide stop
–
Stop pump membrane
858 / 2,15 mm
858 / 2,15 mm
858 / 2,15 mm
858 / 2,15 mm
TIGHTENING TORQUES – ENGINE 250-F
Hexagon collar screw, engine case, clutch cover, ignition cover, water pump cover M6
10 Nm
Oil drain plug
M12x1.5
20 Nm
Allen head plug, oil screen short
M16x1.5
Oil + 10 Nm
Hexagon plug, oil screen long
M20x1.5
15 Nm
Collar screw for oil filter cover
M5
6 Nm
Plug pressure valve
M12x1.5
20 Nm
Screws, oil pump cover
M5
Loctite 222 + 6 Nm
Hexagon collar screw, cylinder / cylinder head
M6
10 Nm
Cylinder head screw
M10
Oil + 40/50 Nm
Hexagon collar screw, exhaust flange
M6
Loctite 243 + 10 Nm
Valve cover screws
M6
10 Nm
Camshaft screw
M12x1
Loctite 243 + 80 Nm
Collar screw/nut camshaft bearing support
M7
Oil + 18 Nm
Hexagon nut, primary gear
M18x1.5 left
Loctite 243 + 150 Nm
Nut for inner clutch hub
M18x1.5
Loctite 243 + 120 Nm
Hexagon collar screw, clutch spring
M6
10 Nm
Allan head screw, shift roller locking piece
M6
Loctite 243 + 10 Nm
Hexagon collar screw, locking lever
M5
Loctite 243 + 6 Nm
Locking screw for shift roller bearing
M6
Loctite 243 + 6 Nm
Locking screw for main shaft bearing
M6
Loctite 243 + 6 Nm
HH collar screw clip/tensioning rail
M6
Loctite 243 + 10 Nm
Plug for chain tensioner
M24x1.5
25 Nm
Hexagon collar screw, stator XC, EXC
M6
Loctite 243 + 8 Nm
Hexagon collar screw, E-starter
M6
10 Nm
Hexagon collar screw, pulser coil
M5
Loctite 243 + 6 Nm
Hexagon collar nut, flywheel
M12x1
60 Nm
Hexagon collar screw, bump part kickstarter
M6
Loctite 243 + 10 Nm
Cable retaining bracket (ignition)
M6
Loctite 243 + 6 Nm
Allan head screw, kickstarter
M8
Loctite 243 + 25 Nm
Hexagon collar screw, shift lever
M6
Loctite 243 + 10 Nm
Hexagon screw, engine sprocket
M10
Loctite 243 + 60 Nm
Spark plug
M10
10-12 Nm
Summary of Contents for 2007 250 EXC-F SIX DAYS
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