Beta RR 390 User Manual

3
CHECKS AND MAINTENANCE
41
GB
CHECK THE LEVEL OF THE REAR
BRAKE FLUID
Check the level of the brake fluid through
sight D. The level of the fluid should never
fall below the mark in the sight.
RESTORING THE LEVEL OF THE
REAR BRAKE FLUID
To restore the level of the brake fluid, un-
screw cap 3 and pour in brake fluid
until
the level reaches the mark in sight D.
WARNING
We recommend the use of gradations
below:
- DOT 4
- DOT 5.1
Do not on any account use DOT 5 brake
fluid.
WARNING
The brake fluid is extremely corrosive. Take
care not to spill it on the paintwork.
BLEEDING THE REAR BRAKE
To bleed air from the rear brake circuit,
proceed as follows:
•
Remove the rubber cap E from the valve F.
•Open the sump cap.
•Insert one end of a transparent tube into
a container.
•Pump with the brake lever 2/3 times and
keep the lever pressed.
•Unscrew the valve and let the oil drain.
•If are still visible in the tube repeat above
operation until obtaining a continuous
outflow of oil within no air bubbles.
•Close the valve and release the lever.
NOTE:
during this procedure, continuously top uo
the brake pump thank to replace the oil that
is out flowing.
•Remove the tube.
•Replace the rubber cap.
E
F
D
3

Beta RR 390 Specifications

General

Displacement	386 cc
Bore x Stroke	88 mm x 63.4 mm
Compression Ratio	12.5:1
Fuel System	Electronic Fuel Injection
Ignition	DC-CDI
Lubrication	Wet sump
Transmission	6-speed
Clutch	Wet multi-disc
Front Tire	90/90-21
Rear Tire	140/80-18
Ground Clearance	320 mm
Dry Weight	107 kg
Engine Type	Single cylinder, 4-stroke, liquid-cooled
Frame	Molybdenum steel with double cradle split above the exhaust port
Rear Suspension	Monoshock