PIAGGIO 2012 MSS APE 50, Service Station Manual

Page: 42 / 117

Poor performance
LOW POWER
Possible Cause Operation
Timing incorrect Perform the foreseen checks.
Cylinder head or spark plug not fitted correctly Correct the locking and the fitting.
Leakage of current of the ignition system Locate the dispersion and act accordingly.
Excessive incrustation on the lights of the cylinder Descale.
Silencer blocked Descale with iron wire bent into a hook or with compressed air
introduced into the cylinder nozzle fixed to the cylinder after the
external exhaust pipe.
Starting difficulties
PROBLEMS WITH STARTING
Possible Cause Operation
Battery terminals oxidised or not properly locked Clean, tighten and protect with neutral petroleum jelly
Discharged battery The battery is the electrical device in the system that requires
the most frequent inspections and thorough maintenance. Fre-
quently check that the fluid level fully covers the plates; if not,
restore the level adding distilled water (never use natural water,
even if it is drinking water) and check fluid density at the same
time.
If the vehicle is not used for some time (1 month or longer) the
battery needs to be recharged periodically. The battery runs
down completely in the course of three months. When the bat-
tery is being placed on the vehicle, make sure that the connec-
tions are not misplaced, keeping in mind that the black ground
cable with the terminal attached to the frame is to be connected
to the negative terminal whereas, the other cable, must be con-
nected to the terminal .
Carburettor body nozzles Remove and clean in petrol; dry with a compressed air jet.
Inefficient spark plug Replace.
Troubleshooting
MSS APE 50
TROUBL - 42