
TECHNICAL DATA - CARBURETOR
98
19
TECHNICAL DATA - CARBURETOR
19.1
EXC-F, EXC
‑
F SIX DAYS
Carburetor type
KEIHIN FCR-MX 39
Carburetor identification number
3900H
Needle position
3rd position from top
Idle mixture adjusting screw
Open
1.25 turns
Pump membrane stop
2.15 mm (0.0846 in)
Main jet
168
Jet needle
OBDYS (OBETP)
Idling jet
42
Idle air jet
100
Cold start jet
65 (85)
Leakage nozzle
70
Slide stop
present
19.2
XCF
‑
W, 250 XC-F USA
Carburetor type
KEIHIN FCR-MX 39
Carburetor identification number
3900K
Needle position (250 XCF-W USA)
3rd position from top
Needle position (250 XCF-W ZA, 250 XC-F USA)
5th position from top
Idle mixture adjusting screw (250 XCF-W ZA, 250 XC-F USA)
Open
1.0 turn
Idle mixture adjusting screw (250 XCF-W USA)
Open
1.5 turns
Pump membrane stop
2.15 mm (0.0846 in)
Main jet
168
Jet needle (250 XCF-W USA)
OBEKT
Jet needle (250 XCF-W ZA, 250 XC-F USA)
OBETP
Idling jet
42
Idle air jet
100
Cold start jet
85
Leakage nozzle
50
19.3
SX
‑
F
Carburetor type
KEIHIN FCR-MX 39
Carburetor identification number
3925I
Needle position
4th position from top
Idle mixture adjusting screw
Open
1.25 turns
Pump membrane stop
2.15 mm (0.0846 in)
Main jet
175
Jet needle
OBEKP
Idling jet
40
Idle air jet
100
Cold start jet
85
Leakage nozzle
50
Summary of Contents for 2009 250 EXC-F SIX DAYS
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