I just joined the forum after ending up here often with my google searches.
I am a first time Vespa owner since 1 week ago. I am from the USA originally, but am on a work assignment in Germany. Following some nice holidays in Italy, I grew really fond of the older 2 stroke Vespas and have been regularly searching for them. Last weekend, I finally brought home a 1985 PK50S with around 9000 km.
The scooter is generally in good condition - a bit of patina and bumps, but good character. The engine runs strong and it drives well. The owner recently put on a new carb, rims, and tires as well.
Since getting it home, I noticed a slow oil leak that left a few drops on the floor each day (regardless of running it or not). It's gearbox oil and does not smell of fuel.
I tried gently tightening the oil fill and drain plugs as well as the case bolts that I could access. No change to the leak though.
Upon cleaning up the engine to try to find the leak, I removed the gear selector cover and it was full of oil. With the cover removed, I can see the drops forming and falling bottom of the shaft and frayed cables now (see pics - yes, cables are ugly and on the list to replace too!).
My internet searches have not helped me figure out yet where the oil might be escaping from in the gear selector assembly. I saw in an exploded view there is an O-Ring further up the shaft going in to the crankcase.
Any advice how I should investigate this? Can I get to that O-Ring without having to split open the crankcase if that is the most likely culprit? Any other gaskets I should check?
I'm pretty comfortable with a wrench, but don't have a proper workbench or large set of tool on our overseas assignment here. So I can probably manage things that can be done with the engine still in the scooter by propping it up on some milk cartons, but engine removals or advanced activities I should probably trust to a local Vespa shop.
Thanks everyone and I am excited to join your community!