Husqvarna 322, Руководство по ремонту

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6
504 90 00-02
505 38 17-05
Cylinder and piston
The cylinder and piston are two components
that are exposed to the most strain in the
engine. For example, they should withstand
high speed, large changes in heat and high
pressure. In addition, they should withstand
wear. Despite the hard working conditions,
serious cylinder and piston failures are quite
unusual. Some of the reasons behind this are the new coating materials in the cylinder bore,
new lubricants and improved manufacturing
techniques.
Cleanliness is extremely important when
servicing these components. We therefore
recommend that the cylinder and the area
around it is cleaned thoroughly before it is
dismantled from the crankcase.
Dismantling
Dismantle all components around the
cylinder including the distance piece
fitted to the carburettor.
Dismantling
Dismantle the following components:
Cylinder cover, muffler grille, muffler
with heat guard, starter and spark plug.
Fold back the fuel tank.
Now remove the 2 bolts holding the
distance piece against the crankcase.
Remove the distance piece with the
carburettor attached.
Pull off the cylinder and dismantle the
piston and connecting rod. Pull the cylinder straight up without
turning it. If it is turned, there is a risk of
the piston ring breaking.
A sealant has been used on the base of
the cylinder instead of a gasket.
Dismantle the piston from the connect-
ing rod (see the Workshop Manual if
necessary).
Remove the 4 bolts holding the cylinder
on the crankcase. Remove the bolts holding the cylinder.
6 Eng, 27-30 98-12-14, 17.08 28