Beta RR 390 User Manual

4
ADJUSTMENTS
61
GB
GAS CONTROL ADJUSTMENT
The throttle control cable should always
have a 3-5 mm play. In addition, the idle
speed should not change when the handle-
bars are fully rotated to the left or right. Push
back protective cap 10. Loosen counternut
11 and turn adjusting screw 12. Turning
the screw anticlockwise decreases the idle
travel; turning it clockwise increases it.
Tighten the counternut and check that the
throttle twist grip turns smoothly.
CHECKING AND ADJUSTING
THE STEERING PLAY
Periodically check the play of the steering
head tube by moving the forks backwards
and forwards as shown in the figure. If
any play is felt, carry out the adjustment
by following these steps:
• Loosen the four screws 13 and screw
14.
• Recover the play by intervening on screw
15.
•Tighten the screws 13 to 17Nm.
• Tighten the screw 14 to 20 Nm.
NOTE:
Proper adjustment must leave no play and
cause no stiffness, and allow the steering to
rotate smoothly. Check the fitting direction
of the clevises as it can alter the geometry
of the handlebar.
10
12
11
14
13
15

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