1
GENERAL INFORMA
TION
19
USA
RR 400
RR 450
RR 520
Carburator type
Keihin FCR-MX 39 Keihin FCR-MX 39 Keihin FCR-MX 39
Main jet
175
175
180
Idling jet
45
45
45
Starter jet
85
85
85
Needle
OBDTS
OBDVS
OBDVS
Needle position
(from above)
5°
4°
4°
Main air jet
200
200
200
Idling air jet
100
100
100
Mixture control screw
1 + 1/2
1 + 1/2
1 + 1/2
(from fully closed)
Intake jet
50
40
40
Stop
NO
NO
NO
*
- This change makes the vehicle not complying with the Highway Code. Use should be limited to private circuits and
routes closed to traffi c.
Carburetor
Lubrication ............................................................................. 2 oil pumps
Cooling system ......................................... forced liquid circulation by pump
Spark plug .................................................................... NGK LKAR 8A - 9
Clutch .................................................................................. wet, multidisc
Transmission .................................................. 6-speed with front claw clutch
Valve gear .................................................................................. 4 valves
Ignition ................................................................ DC-CDI without trembler,
with digital variable spark advance, Kokusan-type
Starting .............................................................electric starter and kickstart
Version
RR 400
RR 450
RR 520
Primary
drive
28/76
31/73
31/73
Gear ratio 1
st
gear
12/31
12/31
12/31
Gear ratio 2
nd
gear
15/28
15/28
15/28
Gear ratio 3
rd
gear
19/28
19/28
19/28
Gear ratio 4
th
gear
20/24
20/24
20/24
Gear ratio 5
th
gear
27/27
27/27
27/27
Gear ratio 6
th
gear
28/24
28/24
28/24
Final
drive
15/48
15/48
15/48
