A
B
C
D
E
F
G
H
L
M
N
P
section
N 4.1
471098/1098S - M.Y. 2007 - edition 00
Engine
In this condition, with the piston of the horizontal cylinder at TDC with the valves fully closed as confirmed by the reading on
gauge (G), set the gauges (H) to zero.
Refit the belts and tension them as described in Sect. N 4.2.
Turn the degree wheel (L) counterclockwise until the dial gauge (H) on the exhaust side reads a lift of 1 mm. Check that the
angular displacement reading in degrees on the degree wheel (L) is as specified.
Continue to rotate in the same direction until you obtain a 1 mm lift on the intake side. Check the angular value on the degree
wheel.
Continue turning the shaft until you reach total closure of the valve on the expansion stroke.
Now reverse the rotation (i.e. clockwise) of the degree wheel (L) until gauge (H) shows a 1 mm lift of the intake valve.
Check that the angular value is as specified.
Continue turning the degree wheel clockwise until the gauge shows a lift of the exhaust valve of
1 mm. Check the angular value against the specified value.
Repeat the procedure for the vertical cylinder.
Permissible tolerance for measured values is ±3° with respect to specified values.
88765.1518
88765.1188
G
H
H
88765.1523
L
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