Assembly - Husqvarna 243RJ Workshop Manual

Cylinder and piston

Assembly

Lubricate the gudgeon pin's needle bea-
ring with a few drops of engine oil.
NOTE!
Place a rag in the crankcase opening to prevent the circlip from falling into the
crankcase in case it should fl y out.
Do not forget the spacer washers lying on each side of the needle bearing in
the crank rod.
Check that the circlips are properly seated in the grooves.
Check that the pulse channel in the cylin-
der is open.
Assemble the cylinder with the help of as-
sembly set 502 50 70-01.
502 50 70-01
Assembly
Lubricate the gudgeon pin's needle bea-
ring with a few drops of engine oil.
Direct the arrow on the top of the piston
towards the exhaust port.
Press in the gudgeon pin and fi t the
circlips.
Check that the pulse channel in the cylin-
der is open.
Place a new gasket on the base of the
cylinder or crankcase. Lubricate the piston
and the crank bearing with a few drops of
engine oil.
Assemble the cylinder with the help of the
piston ring compressor in the assembly
set 502 50 70-01.
NOTE!
Do not turn the cylinder, as the
piston rings can easily be broken.
Tighten the 4 screws diagonally
502 71 27-02
crosswise.
Inspect the distance piece (A) for cracks
or other damage that can cause leaks and
in turn lead to uneven idling and starting
problems.
Check the impulse channel (B) is fully
open.
Fit a new gasket and screw the distance
piece tightly against the cylinder.
NOTE!
Do not forget the lower screw (into the
fuel pump blower) when fi tting the air
fi lter.
Assemble the remaining parts in the re-
verse order as set out for dismantling. See
respective sections in the manual.
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