Piston Rings - Stihl MS 341 Shop Manual

: Tighten down the cylinder base
screws in an alternate pattern –
b 3.5
: Screw home the decompression
valve, if fitted, and tighten it down
firmly – b 6.8
Reassemble all other parts in the
reverse sequence.
42
6.6

Piston Rings

– Remove the piston – b 6.5.1
– Remove rings from piston.
: Use a piece of old piston ring to
scrape the grooves clean.
: Install the new piston rings in the
grooves so that the radii at the
ends of the rings face upward.
: Position the piston rings so that
the radii at the ring gaps meet at
the fixing pins (arrows) in the
piston groove.
: Check correct installed position
of piston rings (arrows) again.
– Install the piston – b 6.5.2
MS 341, MS 361, MS 361 C