Piaggio Fly 4T servicemanual - Scootergrisen

MSS Fly 50 4T Maintenance
MUM HEIGHT OF LIGHT BEAMS. REFER TO THE STATU-
TORY REGULATIONS IN FORCE IN EVERY COUNTRY
WHERE THE VEHICLE IS USED.
CO check
The check may be necessary in the event of irreg-
ularities in the engine performances, or when ad-
justing the engine idle speed.
- The test must be carried out only after having
carefully cleaned all carburettor components with
the air filter clean and the spark plug in good con-
ditions.
1) Warm up the engine by riding the vehicle for
about 5-10 minutes, as this is the time required for
the choke device to disengage.
2) Shut down the engine only for the time required
to carry out operations 3) and 4).
3) Remove the RH side fairing and the SAS box
cover by loosening the 3 screws shown in the fig-
ure. Interpose a plastic sheet between the secon-
dary air one-way valve and its housing on the
cover. Ensure the valve gasket seals properly. Re-
fit the SAS box cover.
4) Fit the special tool for the collection of exhaust
gases as shown in the picture. Pay attention in en-
suring the seal between the exhaust pipe and the
collection tube. Insert the gas analyser and the ex-
haust tube.
5) Insert the multimetre thermometer inside the
sump, through the oil filler hole.
6) Start up the engine and, before adjusting the
idle speed, ensure the oil temperature is between
70 and 80 °C.
7) Wait for a few minutes to let the temperature
stabilise.
8) Without ever activating the throttle and
through the idle screw, bring the engine speed to
1,950 ± 50 rpm.
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