Stihl GS 461 Manual page 37

2
: Push the assembly drift (1)
1108 893 4700 through the
installed snap ring
: Push the piston pin (2) out of the
piston with the assembly drift (1)
1108 893 4700
If the piston pin is stuck, tap the end
of the drift gently with a hammer to
loosen it.
The piston must be held steady
during this process to ensure that
jolts are not transmitted to the
connecting rod.
– Remove the piston
– Examine the piston rings, replace
if necessary, b 5.8
1
: Take out the needle bearing (1),
examine and clean it, replace if
necessary
36
Installation
1
2
– Coat needle bearing with oil and
slide it into the rod eye
: Line up the piston so that the
arrow (arrow) in the piston base
points towards the exhaust port
The assembly drift (1) can be
inserted through the fitted snap ring.
– Position the piston on the rod eye
: Push the assembly drift (1)
1108 893 4700 with the stub end
first through piston hole and rod
eye (needle cage) and secure the
piston
: Coat the piston pin (2) with oil
: Fit the piston pin (2) on the stub
of the assembly drift (1) and slide
it into the piston
– Use the assembly tool
5910 890 2212 to prepare the
snap ring for installation
1
The snap ring must be fitted so that
the gap in the ring (arrow) points
upwards in axial direction of the
piston.
: Assembly tool
5910 890 2212 with the taper
sleeve (flat face facing upwards)
on the piston boss, hold the
piston steady and press the tool
shank home until the snap ring
slips into the groove
The tool must be precisely aligned
in axial direction of the piston pin.
GS 461