[RSTarga]

I may be wrong as I am doing this from memory.
One line goes from oil tank to engine thermostat housing
The back of the air filter should have a fitting with two different diameter fitting. It appears yours has been modified.
One connects to the breather fitting on the neck of the oil tank, the other comes from the charcoal filter.
Another thinner line comes from the charcoal filter and goes into the engine shroud fitting behind the alternator.
The thin fitting from the air filter goes into a drip tube at the rear of the engine.