ENGINE
TENDS
TO
STOP
AT
TOP
SPEED
Possible Cause
Operation
Maximum nozzle dirty - lean mixture
Wash the nozzle with solvent and dry with compressed air
Dirty carburettor
Wash the carburettor with solvent and dry with compressed air
Spark plug faulty or dirty.
Remove the spark plug and make sure it is clean
and in good conditions. Adjust the electrodes at
0.6÷0.7 mm. Replace the spark plug, if required.
Fuel tank breather clogged.
With a jet of compressed air, check that the breath-
er pipe is in good conditions (without crushings)
and that it is not clogged.
Water in the carburettor.
Drain out the float chamber.
Engine tends to cut-off at idle
T
HE
MOTOR
TENDS
TO
STOP
AT
IDLE
SPEED
Possible Cause
Operation
Minimum nozzle dirty
Wash the nozzle with solvent and dry with compressed air
Starter that stays open
Check the mechanical movement.
Reed valve does not close
Check / replace the reed pack
High fuel consumption
HIGH
FUEL
CONSUMPTION
Possible Cause
Operation
Air filter blocked or dirty.
Clean according to the procedure
Carburettor nozzles loose and/or float pin faulty
Make sure the nozzles are correctly tightened and
that the float pin is correctly tightened and in good
conditions.
Starter inefficient
Check the mechanical movement.
Engine overheating
E
NGINE
OVERHEATING
Possible Cause
Operation
No coolant in the cooling circuit
Restore the level
Incorrect air bleeding
Repeat the operation
Thermostat remains closed
Replace
Fluid leak in the radiator
Replace the radiator
Coolant leaking from the cooling system
Inspect the whole circuit to spot the leak.
Transmission and brakes
Insufficient braking
B
RAKE
SYSTEM
Possible Cause
Operation
Poor braking
The braking action should begin as soon as the
brake controls are operated.
Troubleshooting
SMT RCR
TROUBL - 32
Summary of Contents for SMT RCR 633793
Page 1: ...SERVICE STATION MANUAL 633793 633800 SMT RCR ...
Page 4: ......
Page 6: ...INDEX OF TOPICS CHARACTERISTICS CHAR ...
Page 13: ...INDEX OF TOPICS TOOLING TOOL ...
Page 18: ...INDEX OF TOPICS MAINTENANCE MAIN ...
Page 30: ...INDEX OF TOPICS TROUBLESHOOTING TROUBL ...
Page 34: ...INDEX OF TOPICS ELECTRICAL SYSTEM ELE SYS ...
Page 49: ...INDEX OF TOPICS ENGINE FROM VEHICLE ENG VE ...
Page 55: ...INDEX OF TOPICS ENGINE ENG ...
Page 86: ...INDEX OF TOPICS SUSPENSIONS SUSP ...
Page 92: ...INDEX OF TOPICS BRAKING SYSTEM BRAK SYS ...
Page 101: ...INDEX OF TOPICS COOLING SYSTEM COOL SYS ...
Page 106: ...INDEX OF TOPICS CHASSIS CHAS ...
Page 113: ...SMT RCR Chassis CHAS 113 ...