Hi guys I was just wondering if anyone might be able to help with a oil leak that I have on my gearbox.
Its a 120Y and I have recently installed the gearbox, and their is oil leaking out of the very bottom of the gearbox where the two larger bolts bolt onto the dust shield.
I never noticed any oil leaking out of their before, just wondering if anyone has any ideas on how I can fix this?
Thanks

Hi Andy, If the oil is gearbox with its destinctive smell you may not have the front seal fitted correctly. They had to be fitted facing backwards . otherwise maybe the rear main is leaking. Another tip for the rear gearbox seal is to fit 2 rear seals just push the first one in a little further then fit the second.

Ok thanks for that.

The best thing to do is clean the area thoroughly with degreaser, then when the leak reappears try & track it back to the source. This could be the rear seal of the engine, the front seal of the gearbox, or even just a leaky rocker cover. I had this last one & the oil was on both sides of the motor all the way back to the rear of the gearbox. It was a real puzzle til I did what I suggested, then it was obvious the rocker cover gasket had gone hard & shrunk. Good luck, I hope it's just a simple leak, because replacing a rear seal means taking the flywheel off, which means etc. They are a pain in the rear seal .