PIAGGIO Beverly Tourer 250 i.e. Service Station Manual page 15

Beverly Tourer 250 i.e.
CRANKSHAFT/ CRANKCASE AXIAL CLEARANCE
Name
Half-shaft, transmission
side
Flywheel-side half-shaft
Connecting rod
Spacer tool
Slot packing system
The shimming system allows the compression ra-
tio to be adjusted correctly.
Characteristic
Compression ratio
11 ± 0.5 : 1
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 travels
inside the cylinder, the thinner the washer "B" of the base gasket to be applied (to obtain the required
compression ratio) and vice versa.
N.B.
MEASUREMENT "A" MUST BE TAKEN WITHOUT ANY GASKET FITTED BETWEEN THE CRANK-
CASE AND CYLINDER AND AFTER RESETTING THE GAUGE, EQUIPPED WITH A SUPPORT, ON
A GROUND PLANE
Description Dimensions
16.6 +0-0.05
16.6 +0-0.05
18 -0.10 -0.15
51.4 +0.05
Characteristics
Initials Quantity
A D = 0.20 - 0.50
B D = 0.20 - 0.50
C D = 0.20 - 0.50
E D = 0.20 - 0.50
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