Operation Manual

50 MS 240, MS 260, MS 260 C
: Position the piston rings so that
the radii at the ring gap meet at
the fixing pin in the piston groove
(arrows).
: Check correct installed position
of the piston rings (arrows).
– Install the piston, b 8.7.2
– Reassemble all other parts in the
reverse sequence.
165RA162 TG
8.9 Decompression Valve
– Remove the shroud, b 8.4
: Remove the cover (1).
: Unscrew the decompression
valve (2).
: Check the sealing cone (arrow)
on the decompression valve for
damage.
If the sealing cone does not close
completely or shows signs of
damage, install a new
decompression valve.
– Fit the decompression valve and
screw it home by hand.
– Tighten down the decompression
valve firmly.
– Tightening torques, b 3.5
– Reassemble all other parts in the
reverse sequence.
165RA163 TG
1
2
165RA164 TG