Beta RR 390 User Manual

3
CHECKS AND MAINTENANCE
54
GB
BATTERY
CHARGING THE BATTERY
Remove the battery and check its charge.
Using an open-circuit multimeter (10-12
hours after the activation), check that the
voltage is greater than 12.6 V. If it is lower,
it is advisable to recharge the battery.
Based on the type of charger available,
charge the battery using either of the fol-
lowing procedures:
• Constant voltage (14.4-15 V) - Charge
the battery for about 12 hours. Check
the voltage 10-12 hours after the end of
recharge as described above.
• Constant current: Charge battery at
0.5-0.8 A until the voltage between the
terminals stabilizes at ~14.5 V.
WARNING
The battery is sealed. When recharging it,
do not remove the seal nor add any liquid.
WARNING
When recharging, first connect the battery
to the battery charger and then turn on the
charger.
If the battery is charged in a closed room,
take care to ensure proper ventilation as
during the charge the battery produces
explosive gases.

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