Technical Data - Carburetor; Exc-R Eu, 450 Exc-R Aus/Uk (3900I); Exc-R Six Days, 450 Exc-R Usa, 450 Xcr-W (3900L) - KTM 450 EXC-R EU Owner's Manual

TECHNICAL DATA - CARBURETOR

450 EXC-R EU, 450 EXC-R AUS/UK (3900I)

Carburetor type
Carburetor identification number
Needle position
Idle mixture adjusting screw
Open
Pump membrane stop
Main jet
Jet needle
Idling jet
Main air jet
Idle air jet
Cold start jet
Leakage nozzle
Throttle slide
Slide stop

450 EXC-R SIX DAYS, 450 EXC-R USA, 450 XCR-W (3900L)

Carburetor type
Carburetor identfication number
Needle position (450 XCR-W USA)
Needle position (450 EXC-R SIX DAYS)
Needle position (450 EXC-R USA, 450 XCR-W ZA)
Idle mixture adjusting screw (450 XCR-W USA)
Open
Idle mixture adjusting screw (450 EXC-R SIX DAYS)
Open
Idle mixture adjusting screw (450 XCR-W ZA)
Open
Idle mixture adjusting screw (450 EXC-R USA)
Open
Pump membrane stop
Main jet (450 EXC-R SIX DAYS, 450 EXC-R USA, 450 XCR-
W USA)
Main jet (450 XCR-W ZA)
Jet needle (450 XCR-W, 450 EXC-R SIX DAYS)
Jet needle (450 EXC-R USA)
Idling jet (450 XCR-W, 450 EXC-R SIX DAYS)
Idling jet (450 EXC-R USA)
Main air jet
Idle air jet
Cold start jet
Leakage nozzle
Throttle slide
KEIHIN FCR-MX 39
3900I
4th position from top
1.75 turns
2.15 mm (0.0846 in)
180
OBDYU (OBDTQ)
40
200
100
65 (85)
40
15
present
KEIHIN FCR-MX 39
3900L
1st position from top
3rd position from top
4th position from top
0.5 turn
1.0 turn
1.5 turns
1.75 turns
2.15 mm (0.0846 in)
180
185
OBDTQ
OBDYU
40
48
200
100
85
40
15
92