TECHNICAL
DATA
-
CARBURETOR
2DD
450
XC-W
SIX
DAYS
USA
I
Carburetor type KEIHIN
FCR-MX
39
Carburetor identification 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
OBOTQ
Idling jet
40
Idle air jet
100
Cold
start jet
85
Spill jet
40
530
EXC
EUIAUS,
530
EXC
SIX
DAYS
I
Carburetor type
KEIHIN
FCR-MX
39
Carburetor
identification
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
OBOZT
(OBDTR)
Idling jet
40
Idle air jet
100
Cold
start jet
65
(85)
Spill jet
40
Slide stop present
530EXC
USA
I
Carburetor type KEIHIN
FCR-MX
39
Carburetor
identification
number
3900Y
Needle position 3rd position from top
Idle mixture adjusting screw
Open
2.0
turns
Pump
membrane
stop
2.15
mm
(0.0846
in)
Main jet
180
Jet needle
OBOZT
Idling jet
48
Idle air jet
100
Cold
start jet
85
Leakage
nozzle
40
TECHNICAL
DATA
-
CARBURETOR
2DD
450
XC-W
SIX
DAYS
USA
I
Carburetor type KEIHIN
FCR-MX
39
Carburetor identification 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
OBOTQ
Idling jet
40
Idle air jet
100
Cold
start jet
85
Spill jet
40
530
EXC
EUIAUS,
530
EXC
SIX
DAYS
I
Carburetor type
KEIHIN
FCR-MX
39
Carburetor
identification
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
OBOZT
(OBDTR)
Idling jet
40
Idle air jet
100
Cold
start jet
65
(85)
Spill jet
40
Slide stop present
530EXC
USA
I
Carburetor type KEIHIN
FCR-MX
39
Carburetor
identification
number
3900Y
Needle position 3rd position from top
Idle mixture adjusting screw
Open
2.0
turns
Pump
membrane
stop
2.15
mm
(0.0846
in)
Main jet
180
Jet needle
OBOZT
Idling jet
48
Idle air jet
100
Cold
start jet
85
Leakage
nozzle
40