Beta RR 390 User Manual

6
TROUBLESHOOTING
70
GB
PROBLEM CAUSE
Engine does not start
REMEDY
- Fuel system clogged (fuel lines, fuel
tank, fuel cock).
- Air filter dirty.
- No current supplied to spark plug.
- Engine flooded.
Clean the system.
Proceed as described on page 48
Clean or replace the spark plug.
If the problem persists, contact a BETA-
MOTOR dealer.
Operate the start-up pedal 5-10 times or
the electrical starter pushbutton 2 times
every 5 seconds. If the vehicle does not
start, remove and dry the spark plug.
Engine misfires
- Spark gap wrongly adjusted.
- Spark plug dirty.
Restore the spark gap.
Clean or replace the spark plug.
Engine knocks
- Spark advance excessive.
- Carbon formation in cylinder
or on spark plug.
Check CDI: contact a BETAMOTOR
dealer.
Engine overheats and
loses power
- Silencer partly clogged.
- Exhaust port clogged.
- Ignition delayed.
Contact a BETAMOTOR dealer.
Contact a BETAMOTOR dealer.
Check CDI: contact a BETAMOTOR
dealer
Front braking poor
- Brake pads worn.
- Air or humidity in the hydraulic
circuit.
Rivolgersi ad un nostro Concessionario
Follow the procedure described on page 40
Rear braking poor
- Brake pads worn.
- Air or humidity in the hydraulic
circuit.
Rivolgersi ad un nostro Concessionario
Follow the procedure described on page 41
Contact a BETAMOTOR dealer.
TROUBLESHOOTING

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