Silencer
In case the engine performance is gradually noticed to
decrease while the engine is still in a good mechanical
condition,
it is very likely that the exhaust muffler and
sometimes even the exhaust-pipe and exhaust-port need
to be decarbonized.
The conical end of the silencer can be removed by
loosening the nut of the retainer inside the muffler
(see pict. 43).
Pict. 43
Next remove the silencer insert. The holes in the insert
need to be cleaned.
Use new rubberseal between the conical silencer-end
and the silencer itself, when reassembling (see pict. 44,
item S).
"**9
Pict. 44
10.76