Installing - Stihl 034 Series User Manual

1
Important:
Before removing the piston, decide
whether or not the crankshaft has to
be removed as well.
To remove the flywheel and
clutch, block the crankshaft by
sliding the wooden assembly
block (1) 1108 893 4800 between
the piston and crankcase.
Use a scriber or similar tool to
ease the hookless snap rings out
of the grooves in the piston.
1
2
Use the assembly drift (2)
1110 893 4700 to push the piston
pin (1) out of the piston.
Note:
– If the piston pin is stuck, tap the
end of the drift lightly with a
hammer if necessary.
034, 036, 036 QS
Important: Hold the piston
steady during this process to
ensure that no jolts are
transmitted to the connecting rod.
– Remove piston and take the
needle cage out of the
connecting rod.
Inspect piston rings and replace if
necessary - see 5.4.
5.3.2

Installing

– Thoroughly clean the gasket
seating surface on the cylinder.
Lubricate the needle cage with oil
and fit it in the small end.
2
Install a snap ring in the front
piston boss (2), i.e. the piston
boss facing you when the arrow
(1) on the piston head is pointing
to the right.
Note:
Use installing tool 5510 890 2210 to
fit the snap ring - see "Standard
Repairs, Troubleshooting"
handbook.
– Heat the piston on an electric
heating plate to about 60°C.
1
21