@waale2004
Check your plug colour. I’m guessing you are running rich with a wet black plug. Cause at 50:1 all your oil is being burnt/used. It can only be excess fuel...
You changed the seal as well as the o~rings. I don’t know if the Athena kit uses special or standard parts? 2 o~rings & 1 bush seal. These are the only parts that can be a problem...
@waale2004 Best jetting for Athena 170 is 300 main jet on the
Mikuni tm28 but with the powerjet blocked off. Just cut the
rubber tube in half from the float chamber to the powerjet then block the 2 halves of the rubber tube with a couple of 5mm threaded bolts or similar.
