Installing Cylinder - Stihl MS 500i Service Manual

1
5
3
3
Insert snap ring (5) into the assembly tool 5910 890
N
2212 (Figs. 1 - 3).
Align the assembly tool 5910 890 2212 so that the
N
assembly tool 5910 890 2212 points in the axial
direction of the piston pin (7) and that the marking
(arrow) points upwards (Fig. 4).
Hold piston (4) in place and insert snap ring (5) into
N
piston (4) using assembly tool 5910 890 2212.
27.5

Installing cylinder

Install piston, @ 27.4.
N
3
13
3
Place the gasket (3) over the piston (4) so that the lug
N
(13) points in the direction of the bumper spike and
the curvature (arrows) points towards the piston.
14
Push the piston support 5910 893 5301 (14) under
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the piston (4) so that the gasket (3) is not damaged.
Turn the crankshaft counterclockwise until the piston
N
(4) is firmly seated on the piston support 5920 893
5301 (14).
56
2
4
4
4
4
3
Align the compression rings (9 and 10) so that the
N
dowel pins are located in the middle of the radii of the
compression rings (9 and 10).
Wet the compression rings (9 and 10), piston (4) and
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inside of the cylinder (2) with oil.
15
Use the clamping strap 0000 893 2600 (15) to
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enclose and hold the piston (4) and the compression
rings (9 and 10) so that the compression rings (9 and
10) do not project beyond the piston wall.
If one of the compression rings (9 and 10) protrudes when
the cylinder (2) is pushed on, the compression ring may
be damaged. A damaged compression ring can lead to a
loss of compression.
When pushing on the cylinder (2), make sure that the
clamping strap 0000 893 2600 (15) firmly surrounds the
piston (4) and the compression rings (9 and 10).
Push the cylinder (2) together with the clamping strap
N
0000 893 2600 (15) over the piston (4).
As soon as the cylinder (2) encloses both
N
compression rings (9 and 10): Remove clamping
strap 0000 893 2600 (15).
Remove piston support 5910 893 5301 (14) so that
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the gasket (3) is not damaged.
Align the gasket (3) so that the screw holes are
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aligned with the holes in the crankcase.
Push cylinder (2) in as far as it will go.
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Insert screws (1) and tighten.
N
Attach antivibration element to the cylinder,@ 17.3.
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Install the decompression valve, @ 8.3.
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Install hood lock,@ 7.7.
N
4
MS 500i