Beta RR 400 Operating Instructions Manual page 98

1
ENGINE
Type ................................................... Single cylinder, 4-stroke, liquid-cooled
Bore x stroke RR 400 ............................................................... 89 x 64 mm
Bore x stroke RR 450 ............................................................... 89 x 72 mm
Bore x stroke RR 525 ............................................................... 95 x 72 mm
Displacement (cm
Displacement (cm
Displacement (cm
Compression ratio RR 400 - RR 450 - RR 525 ........................................ 11:1
Carburetor .................................................................................. see table
Lubrication .............................................................................. 2 oil pumps
Fuel system ............................................................................... carburettor
Type
Carburator-setting number
Main jet
Jet needle
Idling jet
Main air jet
Idling air jet
Needle position
Starting jet
Mixture control screw open
Slide
Performance restrictor
Stop pump membrane
Hot start device
GB
) RR 400 ............................................................ 398 cm
3
3 ) RR 450 ............................................................ 448 cm
3 ) RR 525 ............................................................ 510 cm
RR 400
Keihin FCR-MX 39 Keihin FCR-MX 39 Keihin FCR-MX 39
3900A
178
OBDVR
200
100
3. rd from top
1,25
slide stop
858/2,15 mm
with countershaft and electric starting
RR 450
3900A
178
OBDVR
42 42
200
100
3. rd from top
85 85
1,25
15 15
slide stop
858/2,15 mm
- -
20
RR 525
3900B
178
OBDVT
42
200
100
3. rd from top
85
1,25
15
slide stop
858/2,15 mm
-
3
3
3