ENGINE AND PERIPHERALS
Overhauling the engine
10
10-55
REDRESSING THE VALVE SEATS
INLET
Width of mating faces X (in mm) 1.75± 0.2
Angle (α) 90˚
The mating face is corrected (1) using burr N 208 46˚.
Reduce the width of this mating face at (2) using burr
N 213 15˚ until width X is obtained.
EXHAUST
Width of mating faces X (in mm) 1.75± 0.2
Angle (α) 90˚
The mating face is corrected (1) using burr N 204 46˚.
Reduce the width of this mating face at (3) using burr
N 212 75˚ until width X is obtained.
N.B.: respect the mating face position of the valve on its seat.
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