These were good saws, at the time. Don't get me wrong here, but they were replaced fast with better saws for those who used saws proffessionaly.
These saws had issues, same as all others had of simular design.
And were very good in winter time when it was really cold, but not that good in spring and fall in shifting temp's.
The 65 came out in -66 a year late as they had too much problems. Vibrations, sound and the balance was to high.
This was corrected and the saw became much better.
When compare these with the 180 (-69), 160 (-70), 140 (-73) that came after it is easy to see why they were replaced as work saws.
When the 65-77 production moved to Tomos factory (Jogoslavia) in -73 to -74, they were out dated here and did not sell to the professionals since a couple of years.