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42 MS 341, MS 361, MS 361 C

: 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

212RA071

Reassemble all other parts in the

reverse sequence.

– Remove the piston – b 6.5.1

– Remove rings from piston.

: Use a piece of old piston ring to

scrape the grooves clean.

212RA088

: Install the new piston rings in the

grooves so that the radii at the

ends of the rings face upward.

212RA089

: 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.

212RA090

– Install the piston – b 6.5.2

6.6 Piston Rings

Stihl MS 341 Shop Manual

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