VESPA LX 50 Specifications download pdf (Page 15)

Cylinder - piston assy.

COUPLING BETWEEN PISTON AND CYLINDER

Name

Initials Cylinder Piston Play on fitting

Cylinder A 38.993 ÷ 39.000 38.954 ÷ 38.961 0.032 ÷ 0.046

Cylinder B 39.000 ÷ 39.007 38.961 ÷ 38.968 0.032 ÷ 0.046

Piston C 39.007 ÷ 39.014 38.968 ÷ 38.975 0.032 ÷ 0.046

Piston D 39.014 ÷ 39.021 38.975 ÷ 38.982 0.032 ÷ 0.046

Cylinder 1st oversize A1 39.193 ÷ 39.200 39.154 ÷ 39.161 0.032 ÷ 0.046

Cylinder 1st oversize B1 39.200 ÷ 39.207 39.161 ÷ 39.168 0.032 ÷ 0.046

Piston 1st oversize C1 39.207 ÷ 39.214 39.168 ÷ 39.175 0.032 ÷ 0.046

Piston 1st oversize D1 39.214 ÷ 39.221 39.175 ÷ 39.182 0.032 ÷ 0.046

Cylinder 2nd oversize A2 39.393 ÷ 39.400 39.354 ÷ 39.361 0.032 ÷ 0.046

Cylinder 2nd oversize B2 39.400 ÷ 39.407 39.361 ÷ 39.368 0.032 ÷ 0.046

Piston 2nd oversize C2 39.407 ÷ 39.414 39.368 ÷ 39.375 0.032 ÷ 0.046

Piston 2nd oversize D2 39.414 ÷ 39.421 39.375 ÷ 39.382 0.032 ÷ 0.046

Cylinder 3rd oversize A3 39.593 ÷ 39.600 39.554 ÷ 39.561 0.032 ÷ 0.046

Cylinder 3rd oversize B3 39.600 ÷ 39.607 39.561 ÷ 39.568 0.032 ÷ 0.046

Piston 3rd oversize C3 39.607 ÷ 39.614 39.568 ÷ 39.575 0.032 ÷ 0.046

Piston 3rd oversize D3 39.614 ÷ 39.621 39.575 ÷ 39.582 0.032 ÷ 0.046

N.B.

THE PISTON MUST BE INSTALLED WITH THE ARROW FACING TOWARDS THE EXHAUST SIDE,

THE PISTON RINGS MUST BE INSTALLED WITH THE WORD «TOP» OR THE STAMPED MARK

FACING UPWARDS.

- Measure the outside diameter of the gudgeon

pin.

Characteristic

Pin outside diameter

13 +0 -0.004 mm

Minimum admissible diameter gudgeon pin

12.990 mm

Vespa LX 50 4valvole Characteristics

CHAR - 15

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 211 212

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VESPA LX 50 Specifications Page 15