Piston Rings - Stihl MS 650 Manual

: Pull the ends of the string
outward.
The manifold flange is pulled
through the carburetor housing
intake opening without damaging
the manifold.
– Check that the flange is properly
seated in the carburetor housing.
: Tighten down the cylinder base
screws in an alternate pattern –
b 3.5
MS 650, MS 660
1
: Fit sleeve (1) in manifold.
: Fit the washer (2) on the studs.
– Screw home the decompression
valve and tighten it down firmly –
b 3.5
– Fit the spark plug and tighten it
down firmly – b 3.5
– Install the carburetor – b 12.2.1
– Install the muffler – b 6.1
– Fit the shroud – b 6.2
Reassemble all other parts in the
reverse sequence.
6.6

Piston Rings

– Remove the piston – b 6.5.1
– Remove the rings from the
2
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.
– Install the piston – b 6.5.2
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