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Vespa 90 - Maintenance

Vespa 90
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MAINTENANCE
Should difficulties of starting or running
occur. check the spark plug:
- Clean the spark plug electrodes with a
wire brush or emery cloth and adjust
the gap (see Plug recommendations page
38). Check porcelain insulation: if cracked
or broken change the plug.
Clean in neat petrol.
It is advisable to use the types of spark
plug prescribed by factory.
Every 4000 km (2400 miles):
(I) -Check oil level in gear case (see lubri-
cation chart).
(2) - De-coke the engine (see page 24)
cylinder head, piston crown and cylinder
ports). Ensure that residual carbon deposits
do not remain inside the cylinder. Clean the
exhaust pipe using a suitable scraper.
Every 8000 Km (4800 miles):
(I) -Change oil in gear case (see lubrication
chart).
(2)- Remove the rubber plug on front
suspension (No. 3 - fig. 18)and refill with
grease the housingof the front wheel axle
bearingand speedometer drive gear.
(3)- Remove the air filter (see page 21).
clean by agitating in an oil petrol bath and
if possibleair blastdry.
(4)- Lubricate control cables transmissions
andfelt lubricatingpad on flywheel.
(5) - Clean. and if necessary. set the contact
breaker points (fig. 17).
In case of difficultyconsult your Dealer.
- 25

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