COUPLINGS
BUSHING CATEGORY CRANKCASE
HALVES CATEGORY
BUSHING INSIDE DIAMETER AFTER FITTING
B 2 29.024 ÷ 29.054
C 1 29.024 ÷ 29.054
2 29.018 ÷ 29.048
E 1 29.018 ÷ 29.048
Combine the shaft with two category 1 crankwebs with the category 1 crankcase (or cat. 2 with cat. 2).
Furthermore a spare crankcase cannot be matched with a crankshaft with mixed categories. The spare
crankshaft has half-shafts of the same category.
CATEGORIES
CRANKCASE HALVES ENGINE HALF-SHAFT BUSHING
Cat. 1 Cat. 1 E
Cat. 2 Cat. 2 B
Cat. 1 Cat. 2 C
Cat. 2 Cat. 1 C
N.B.
DO NOT TAKE THE MEASUREMENT ON THE TWO HALF-
SHELL COUPLING SURFACE SINCE THE ENDS ARE RE-
LIEVED TO ALLOW BENDING DURING THE DRIVING
OPERATION.
N.B.
CRANKCASES FOR REPLACEMENTS ARE SELECTED
WITH CRANKCASE HALVES OF THE SAME CATEGORY
AND ARE FITTED WITH CATEGORY C BUSHINGS (YEL-
LOW)
Characteristic
Crankshaft-bushing maximum clearance ad-
mitted:
0.08 mm
Diameter of crankcase without bushing
CAT. 1: 32.959 ÷ 32.965 mm
CAT. 2: 32.953 ÷ 32.959 mm
THE CRANKSHAFT is available in two CATEGO-
RIES:
Characteristic
Crankshaft category:
CAT. 1 - CAT. 2
CRANKSHAFT CATEGORY IDENTIFICATION:
The identification is indicated on the counterweight shoulder «*1 - *2», if carried out with micropinholing.
Otherwise, «1 - 2» if done manually with an electric pen. The spare part identification is located on the
package with a drawing number plus FC1/FC2 or (001/002).
Beverly 300 i.e. Characteristics
CHAR - 19
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