Filter
Top Products
TECHNICAL DATA – ENGINE »
ENGLISH
55
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