Name Measure A Thickness
125 2.4 ÷ 2.6 0.6 ± 0.05
N.B.
MEASUREMENT "A" TO BE TAKEN IS A VALUE OF PISTON RE-ENTRY, IT INDICATES BY HOW
MUCH THE PLANE FORMED BY THE PISTON CROWN FALLS BELOW THE PLANE FORMED BY
THE TOP OF THE CYLINDER. THE FURTHER THE PISTON FALLS INSIDE THE CYLINDER, THE
LESS THE BASE GASKET IS TO BE APPLIED (TO RECOVER THE COMPRESSION RATIO) AND
VICE VERSA.
Oversizes
ENGINE 125 OVERSIZE
Name
Description Dimensions Initials Quantity
Compression ring 57 x 1 A 0.15 ÷ 0.30
Oil scraper ring 57 x 1 A 0.10 ÷ 0.30
Oil scraper ring 57 x 2.5 A 0.15 ÷ 0.35
Compression ring 1st
oversize
57.2 x 1 A 0.15 ÷ 0.30
Oil scraper ring 1st
Oversize
57.2 x 1 A 0.10 ÷ 0.30
Oil scraper ring 1st
Oversize
57.2 x 2.5 A 0.15 ÷ 0.35
Compression ring 2nd
Oversize
57.4 x 1 A 0.15 ÷ 0.30
Oil scraper ring 2nd
Oversize
57.4 x 1 A 0.10 ÷ 0.30
Oil scraper ring 2nd
Oversize
57.4 x 2.5 A 0.15 ÷ 0.35
Compression ring 3rd
Oversize
57.6 x 1 A 0.15 ÷ 0.30
Oil scraper ring 3rd
Oversize
57.6 x 1 A
Oil scraper ring 3rd
Oversize
57.6 x 2.5 A 0.15 ÷ 0.35
X9 Evolution 125 Characteristics
CHAR - 23
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