Ducati MONSTER620 Manuel D'utilisation Et Entretien page 139

Storing the bike away
If the motorcycle is to be left unridden over long periods,
it is advisable to carry out the following operations before
storing it away:
clean the motorcycle;
remove the drain plug and seal and drain all fuel from
tank;
pour a few drops of engine oil into the cylinders through
the spark plug seats, then crank the engine by hand a
few times so a protective film of oil will spread on
E
cylinder inner walls;
place the motorcycle on a service stand;
disconnect and remove the battery. Battery should be
checked and charged whenever the motorcycle has been
left unridden for over a month;
protect the motorcycle with a suitable canvas that will
protect paintwork and let condensate breathe out. A
special canvas is available from Ducati Performance.
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Important notes
Some countries, such as France, Germany, Great Britain,
Switzerland and so on, have compulsory emission and
noise standards.
Carry out any required inspection at regular intervals and
replace any parts using Ducati original spare parts
complying with local law.
Important
Tampering wih noise control system is prohibited.
Owners are warned that the law may prohibit:
(a) The removal or rendering inoperative by any person
other than for purposes of maintenance, repair or
replacement, of any device or element of design
incorporated into any new vehicle for the purpose of
noise control prior to its sale or delivery to the ultimate
purchaser or while it is in use; and
(b) the use of the vehicle after such device or element of
design has been removed or rendered inoperative by any
person.