SV200 R200
4/2007© by GLOBAL GARDEN PRODUCTS
58 To check the alignment between the manifolds
and the protruding part of the shaft, place the
engine shaft on two prismatic guides (53) and,
with the help of a comparator (59) placed at the
end, check the displacement by rotating the
shaft. The shaft must be replaced if the dis-
placement exceeds 0.15 mm.
IMPORTANT - A bent shaft must never be
repaired!
WARNING – A bent shaft causes abnormal
vibrations and could be dangerous when the
machine is used!
59 To refit the rings to the piston, first fit the three
oil scraper rings (55), then the ring with a round
edge (56) and finally the ring with a sharp edge
(57), 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.
60 Fit the connecting rod (42), gudgeon pin (51)
and clamping rings (50) to the piston (44), taking
care over the connecting rod marking, which
must face the outlet side of the engine shaft,
with the piston marking facing the exhaust.
61 Put the piston into the ring compression tool
(58).
62 Oil the inside of the piston liberally and insert
the piston, with the marking facing the exhaust.
63 Refit the engine shaft (52) taking maximum care
to match up the two references (59) and (60)
punched on the gears, so as to ensure correct
distribution phasing.
6.10.1
ENGINE BLOCK – Overhauling internal parts
6 / 7
SERVICE MANUAL
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