Vespa 90 - Sparkplug Removal; Changing Oil in Gear Case

OPERATING AND MAINTENANCE INSTRUCTIONS
OPERATION
SPARKPLUG
REMOVAL
CHANGING OIL
IN GEAR CASE
DISMANTLI NG
AIR FILTER
INSTRUCTIONS
- To remove the spark-plug. rotate the knob
and remove the panel; disconnect the H.T.
lead and extract the spark-plug using the
box wrench as indicated in fig. 13.
- Drain offthrough hole (fig. 18).
- Introduce a small quantity of flushing
oil. run the engine a few minutes to ensure
thorough circulation and cleaning and
drain off again.
- Afterwards refill gear case with new oil
(up to level of the filling hole).
- For dismantling the air filter (fig. 14),
pivot the seat on its forward edge (fig. 5).
remove the tool kit. and the control cable
of the choke mechanism (the cable end ring
can be seen on Fig. 14).then disconnect the
NOTES
On reassembling the
spark-plug ensure that
it is screwed into the
threaded hole at the
correct angle.
This operation of
changing oil should
be carried out with
warm engine.
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