SHERCO 125 SE-R 2017, Руководство по ремонту

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125 SE-R
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ENGINE PART CONTROL
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Verification of the state of cylinder wear / Piston
- To detect cylinder wear, the bore diameter is measured using a micrometer located approx. 10 mm from
the upper edge of the cylinder. Take readings at several spots to identify the potential presence of ovalness.
Cylinder Cylinder bore diameter Piston
125 54.000 - 54.015
54.010 - 54.025 A
B
Cylinder Piston Diameter Piston
125 53.95
53.96 A B
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Standard exchange cylinder / Squish control
Using a gauge, measure the height difference between the piston and the cylinder.
The clearance must be 0; otherwise, use another head gasket in order to obtain the desired value.
CAUTION
Should the clearance be greater than indicated, it would be necessary to check the condition of both the cylinder and piston.
If these measurements lie within the tolerance dimensions, replace the segment.
CAUTION
If the cylinder diameter exceeds for example 54.025 mm, the interior would need to be relined (with Nikasil coating) or
the cylinder replaced.
Before relining the cylinder, all exhaust valve parts would need to be disassembled.
The piston size is engraved on the top of the piston, and the cylinder dimension is engraved on the right side cylinder.
CAUTION: The piston dimension must be measured 10 mm
above the apron.