Vittorazi Motors COSMOS 300 Maintenance Manual page 47

Before disassembling de silencer mark the position of the end caps with an erasable marker
Drill the 8 rivets centrally using a drill with a 5 mm diameter bit.
POSITION
REFERENCE
MARK
Use a heat gun to heat the muffler end caps (1, 4).
Remove the following components from the silencer housing (3): the end caps (1, 4) and the
sound-absorbing material (2).
Cosmos 300 – Maintenance manual – V2 47