KTM 450 EXC-R EU - Manual (Page 95)

TECHNICAL DATA - CARBURETOR
93

530 bEXC-RbEU, 530bEXC-RbAUS/UK (3900J)
Carburetor type KEIHIN FCR-MX 39
Carburetor identfication number 3900J
Needle position 5th position from top
Idle mixture adjusting screw
Open 1.5 bturns
Pump membrane stop 2.15 bmm (0.0846bin)
Main jet 180
Jet needle OBDZT (OBDTR)
Idling jet 40
Main air jet 200
Idle air jet 100
Cold start jet 65 (85)
Leakage nozzle 40
Throttle slide 15
Slide stop present

530 bEXC-RbSIXbDAYS, 530bEXC-RbUSA, 530bXCR-W (3900M)
Carburetor type KEIHIN FCR-MX 39
Carburetor identfication number 3900M
Needle position (530 bXCR-WbUSA) 1st position from top
Needle position (530 bEXC-RbSIXbDAYS, 530bEXC-RbUSA) 3rd position from top
Needle position (530 bXCR-WbZA) 4th position from top
Idle mixture adjusting screw (530 bXCR-WbUSA)
Open 0.5 bturn
Idle mixture adjusting screw (530 bEXC-RbSIXbDAYS)
Open 1.0 bturn
Idle mixture adjusting screw (530 bXCR-WbZA)
Open 1.5 bturns
Idle mixture adjusting screw (530 bEXC-RbUSA)
Open 2.0 bturns
Pump membrane stop 2.15 bmm (0.0846bin)
Main jet (530 bEXC-RbSIXbDAYS, 530bEXC-RbUSA, 530bXCR-
W bUSA)
180
Main jet (530 bXCR-WbZA) 185
Jet needle (530 bXCR-W, 530bEXC-RbSIXbDAYS) OBDTR
Jet needle (530 bEXC-RbUSA) OBDZT
Idling jet (530 bXCR-W, 530bEXC-RbSIXbDAYS) 40
Idling jet (530 bEXC-RbUSA) 48
Main air jet 200
Idle air jet 100
Cold start jet 85
Leakage nozzle 40
Throttle slide 15