i have the same bike and it does the same thing its my shift fork seal, but i have next to zip for compressiona and hae to split the case and do a full rebuild anyway so im just going to replace it when im doing that
Im starting a rebuild in acouple of weeks of my 78 Yz and i was woundering if there was any percautions or things i should watch out for or make sure i do, or get for it