Recent content by O2Bdiggin

  1. O

    Yanmar YB 25 Excavator

    with no resolution on the smoke and the suspicion I was burning coolant as my smoke problem I decided to pull the head and replace the head gasket. Not a bad job and followed the procedure outlined by Hoye. In short it did not fix the smoke Issue. I pulled the thermostat housing and there Was...
  2. O

    Yanmar YB 25 Excavator

    Changed the oil today and added 10w30 full synthetic, I added 3.5 quarts which measured about halfway on dipstick. Definitely a lot less smoke coming out of exhaust, I’ll see if it completely goes away in a couple hours or running, thanks bmaverick. when I was pulling drain plug I saw some fuel...
  3. O

    Yanmar YB 25 Excavator

    It’s definitely a tint of blue but I don’t seem to burn any oil.
  4. O

    Yanmar YB 25 Excavator

    Ok, thanks for that info. I am running shell rotella 15w40 and will try 10w30 and report back
  5. O

    Yanmar YB 25 Excavator

    So just reviving an old thread, I recently became the owner of the rare and elusive Yanmar YB25. I’m new and will try and get some pics up soon. So far I’ve done quite a bit to it, new paint, new seat, rebuilt all hydraulic cylinders as well as the rotary unit, replaced the bottom rollers...
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