5
TROUBLESHOOTING
66
GB
PROBLEM
CAUSE
REMEDY
The engine turns over but
will not start
Fuel cock in C position
Turn the fuel cock in A position
Dirty carburettor jets
Contact authorised BETAMOTOR
customer service
Spark plug dirty
Clean or replace the spark plug
Spark gap wrongly adjusted
Restore the spark gap
(page 41)
Fault in the ignition system
Contact authorised BETAMOTOR
customer service
The power delivered by
the engine is insufficient
Tank vent obstructed
Check the tank vent
Fuel system dirty
Contact authorised BETAMOTOR
customer service
Air filter dirty
Clean the air filter
Defective ignition system
Contact authorised BETAMOTOR
customer service
The motor stops or
splutters
Lack of fuel
Move the fuel cock to A
Refuel
Poor carburettor seal
Make sure that the sleeve between
carburetor and engine is intact
Loose or oxidized connector or
ignition coil
Check the connector. Clean and
treat with specific spray
Engine overheats
(liquid flows out/vapor
from the vent radiator)
Radiator grill blocked
Remove and clean the grill (page
39)
Radiator (air side) blocked
Clean the radiator
Forced ventilation absent
Check that the cooling fan is working
correctly
Low coolant
Check the coolant level (page 36)
Silencer partly clogged
Contact authorised BETAMOTOR
customer service
Carburation too lean
Contact authorised BETAMOTOR
customer service
Front braking poor
Brake pads worn
Contact authorised BETAMOTOR
customer service
Air or humidity in the hydraulic
circuit
Contact authorised BETAMOTOR
customer service
Rear braking poor
Brake pads worn
Contact authorised BETAMOTOR
customer service
Air or humidity in the hydraulic
circuit
Contact authorised BETAMOTOR
customer service
TROUBLESHOOTING
Summary of Contents for EVO 4T
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