Is there a site to look up the serial numbers on these machines? I just purchased an older Mini Ex: PC05-6 6137. Can anyone tell me when it was manufactured? Or maybe point to a site with the information? Thank you in advance. Ron Z
Those machines were never meant to be in North America so the guide books don't cover them. You might have some luck contacting a Komatsu dealer. The will have access to the manufacturer dates but may not want to talk to you about them.
Parts lookup https://en.av-gk.ru/catalog/komatsu/pc05-6r/ As for production date, find the engine rating decal on the valve cover. That'll get you close.
No rating decals on gray market machines usually. That one is likely older than Tier 2 at least.