Considering the conditions and lack of maintenance they get it's a miracle they run at all. Most are mounted near the drive wheels of the truck and every type of junk on the roads get thrown at them. The two I bought were both a problem to the owner. I have never seen anything in my life that took the abuse these things do. Plugged radiators, loose belts, Loose oil filter. Bad idler pulley bearings, rotten fuel lines and I don't even want to mention the air filters. On one the fan motor was barely hanging together. These things were still running and doing their job. I think to say that they are all junk is a little unfair.
After getting the engines out of mine and servicing them they run like a clock. Been mowing my 2.5 acre yard with one all summer without a hitch. Haven't even had to add any oil.
I see you did clarify your post. Thank you. My engines were out of the Tri-pack units and are Yanmar.
Thanks for the information. I was typing as you were posting.
Edited by Cvans, August 29, 2013 - 10:36 PM.