Stihl MS 661 Manual page 31

1
: Fit the new cylinder gasket (1)
over the piston and position it so
that the contour (arrow) and
tab (2) are at the clutch side.
: Hold the piston support (1)
5910 893 5300 so that the
recesses (arrows) engage the
flange and then push it between
the piston and crankcase.
Take care not to damage the
cylinder gasket.
30
2
1
– Lubricate the piston, piston rings
and cylinder wall with oil, b 16
– Check correct installed position
of rings, b 6.8
: Use the clamping strap (1)
0000 893 2600 to compress the
rings around the piston.
Apply the clamping strap (1) so that
the piston rings do not project
1
beyond the cylinder wall.
1
2
: Position the cylinder (1) so that
the manifold (2) points towards
the tank housing.
While sliding the cylinder over the
piston, hold the clamping strap
tightly around the piston so that the
rings do not project
– they might otherwise break.
: Slide the cylinder over the piston,
the clamping strap moves
downwards at the same time.
– Remove the clamping strap and
piston support.
3
1
: Wind a piece of string (1) around
the manifold flange and pass the
ends of the string through the
opening in the tank housing.
Make sure the cylinder gasket is
properly seated.
: Push home the cylinder (2) as far
as stop and position the manifold
flange (3) against the tank
housing – take care not to
displace or damage the washer in
the manifold.
1
: Insert the screws (1) to hold the
cylinder and gasket in position.
: Tighten down the screws (1)
through the holes (arrows) in the
cylinder in a crosswise pattern.
MS 661, MS 661 C-M
2