Dismantling - Husqvarna 326R Workshop Manual

6
The cylinder and the piston are two of the components exposed to most strain in the engine. They must withstand,
for example, high speeds, large temperature swings and high pressure. Moreover, they must be resistant to wear.
Despite these tough working conditions, major piston and cylinder failure is relatively uncommon. The reasons for
this include new coatings in the cylinder bore, new types of oil and grease and refined manufacturing techniques.
When servicing these components, cleanliness is of the utmost importance.
Before dismantling or other actions are performed on the cylinder block and valve mechanism it is recommended that
a compression test is made to easily determine whether any faults exist, for example, leaking valves, leaking valve
guides, damaged piston rings or a damaged piston.
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Cylinder and piston

Dismantling

Dismantle all parts around the cylinder
incl. the distance piece with attached
carburettor.
NOTE!
Ensure that the nut in the nut recess on the distance piece is not lost.
Remove the bolts holding the cylinder.
502 50 18-01
Pull off the cylinder.
Dismantling
Dismantle the following parts:
Cylinder cover, muffler grille, muffler
with heat guard plate, starter and spark
plug. Move the fuel tank.
Now remove the 2 screws holding the
distance piece against the crankcase
and the screw next to the fuel pump.
Remove the distance piece with the
attached carburettor.
Remove the 4 bolts holding the cylinder
against the crankcase.
Pull the cylinder straight up without
turning it. There is a risk that a piston
ring may break.