page 56
Release 00 - 03/2018
Engine RS100 - RSC100
Service manual
15. ENGINE BLOCK - Overhauling internal parts
16 - On the engine shaft (26), removed beforehand,
use a digital gauge to check the diameter of the
connecting rod pin.
The value must not be less than 23.92 mm or the
engine shaft will have to be replaced.
NOTE - In the case of seizing, the manifolds
canbepolishedwithneemerycloth,only
removing foreign matter and checking that
thenalsizeremainswithintheaforementio-
ned limit.
17 - To check the alignment between the mani-
folds and the protruding part of the shaft, place
the engine shaft on two prismatic guides (33) and,
with the help of a comparator (34) placed at the
end, check the displacement by rotating the shaft.
The shaft must be replaced if the displacement
exceeds 0.10 mm.
IMPORTANT: A bent shaft must never be re-
paired!
WARNING - DANGER: A bent shaft causes ab-
normal vibrations and could be dangerous
when the machine is used!
18 - To ret the rings to the piston, rst t the three
oil scraper rings (35), then the ring with a round
edge (36) and nally the ring with a sharp edge
(37), being careful over the markings (which must
face the piston head) and in arranging the gaps to
ensure that they are not aligned with each other;
37
36
35
10
20
30
40
50
60
70
80
90
26
34
33
33
D
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