Hello Peter B, Thanks for the answer. As you say this motor has the original type of bearing, the left side crankcase seal has failed allowing crankcase pressure to force gearbox oil out of the breather. Moreover, this motor leaks oil entering the magneto housing (the ignition) because has a crack. I think its not possible repair, it was repared with putty car. Here in spain i i found the crankcase engine gas gas 280 txt pro 2003, the 2 , left and right 150€. The problem is his engine, because he have the modern sistem, only one seal (magneto) and the other is including in to the bearing. Its compatible 2002/2003?
If its compatible, i only need go to the turner to to remove the false bushings from the crankshaft.
In what page you buy replacment in New Zeland?
Greeting