Ducati 750 Sport Owner's Manual page 54

48
Removing the valves and springs
With tool # 88713.0102 positioned
between the valve head and upper plate,
remove the two half-cones. Remove the
tool and take out the spring and valve from
their guide.
Removing the camshaft
Open the lock washer which holds the hex
nut. With tool # 88713.0263 attached to a
cam lobe, hold the shaft to prevent it from
rotating. Then remove the nut with a
22 mm wrench.
Removing the conical gear with the
transmission shank
Remove the timing support from the
head as shown in the figure. Remove the
flange from the support and take out the
bearing and conical gear. To remove the
same gear from the horizontal cylinder, it is
not necessary to remove the timing
support.