Well it's been a year going back and forth with Yanmar on the frequent Re-gens with my YT347. Was dealing with Andy Buck, Customer Support Rep and he's basically worthless and kept blowing me off for about a year. They were supposed to send out a tech to diagnose the issue. Here's his last email to me from Andy.
"David due to the recent issue with the pandemic we no longer have a full set of outside service managers please contact your local dealer they can get InTouch with us and we can help diagnose the issue"
Talked with the dealer and he said he had to pickup the tractor so he could hook it up to a laptop and send Yanmar the data. Yanmar determined that I was running the tractor at an average of 1300 rpm and the re-gens are normal. There is no way this could be true, since I always run it at 2200 RPM or more after warm up. This was recommend by the dealer when I first bought the tractor. The dealer said Yanmar was ready to throw parts into the tractor which tells me there's an issue.
$200 out of my pocket for pickup and delivery.
View attachment 669064
re-gens
190 6 hrs - last one
184 20 hrs - After picked up from dealer. Thought they fixed something
164 10 hrs
150 14 hrs
It would be different if I was using it for plowing fields and running it for 8 hrs, but that's not the case. When I'm using it and it re-gens, I have to let it sit there and let it re-gen for a 1/2 hr sucking fuel.
I love everything about the tractor except for the re-gens.
Would I buy another IV tier Yanmar, probably not.