TECHNICAL DATA - CARBURETOR
90
15.1
450 EXC EU
Carburetor type
KEIHIN FCR-MX 39
Carburetor identification number
3900I
Needle position
4th position from top
Idle mixture adjusting screw
Open
1.75 turns
Pump membrane stop
2.15 mm (0.0846 in)
Main jet
180
Jet needle
OBDYU (OBDTQ)
Idling jet
40
Idle air jet
100
Cold start jet
65 (85)
Leakage nozzle
40
Slide stop
present
15.2
XC
‑
W USA
Carburetor type
KEIHIN FCR-MX 39
Carburetor identfication number
3900L
Needle position
1st position from top
Idle mixture adjusting screw
Open
1.75 turns
Pump membrane stop
2.15 mm (0.0846 in)
Main jet
180
Jet needle
OBDTQ
Idling jet
40
Idle air jet
100
Cold start jet
85
Leakage nozzle
40
15.3
530 EXC EU
Carburetor type
KEIHIN FCR-MX 39
Carburetor identfication number
3900J
Needle position
5th position from top
Idle mixture adjusting screw
Open
1.5 turns
Pump membrane stop
2.15 mm (0.0846 in)
Main jet
180
Jet needle
OBDZT (OBDTR)
Idling jet
40
Idle air jet
100
Cold start jet
65 (85)
Leakage nozzle
40
Slide stop
present