PIAGGIO Beverly Tourer 250 i.e. - ENGINE COUPLING CATEGORY; Crankcase - crankshaft - connecting rod; CRANKSHAFT; CRANKCASE

ENGINE COUPLING CATEGORY
Name Initials Cylinder Piston Play on fitting
Cylinder M 72.01 ÷ 72.017 71.953 ÷ 71.960 0.050 - 0.064
Cylinder N 72.017 ÷ 72.024 71.960 ÷ 71.967 0.050 - 0.064
Piston O 72.024 ÷ 72.031 71.967 ÷ 71.974 0.050 - 0.064
Piston P 72.031 ÷ 72.038 71.974 ÷ 71.981 0.050 - 0.064
Crankcase - crankshaft - connecting rod
- Measure the diameter of bushings «A» in the
three directions shown in the figure.
- Measure the diameter of the crankshaft bearings
«B».
- Check that the diametral clearance «A-B» is be-
tween the pre-set interval.
Characteristic
Diameter clearance
0.023 ÷ 0.041 mm
If value «A-B» is above the limit, check that value «B» is within the admissible values of the categories.
CRANKSHAFT
Specification
Desc./Quantity
Category 1 28.998 ÷ 29.004
Category 2 29.004 ÷ 29.010
If the crankshaft is within the set limits, replace the crankshaft half-bearings mounting the crankcase
so as to suit the specified couplings. The crankcase halves can be mounted with three types of crank-
shaft half-bearings identified by letters A (red), B (blue), C (yellow), E (green).
CRANKCASE
Specification
Desc./Quantity
Category 1 32.959 ÷ 32.965
Category 2 32.953 ÷ 32.959
CRANKCASE - CRANKSHAFT COUPLING / CRANKSHAFT HALF-BEARINGS
Specification
Desc./Quantity
Crankshaft category 1 - Crankcase category 1 E - E
Crankshaft category 2 - Crankcase category 1 C - C
Crankshaft category 1 - Crankcase category 2 C - C
Crankshaft category 2 - Crankcase category 2 B - B
Characteristics Beverly Tourer 250 i.e.
CHAR - 14