Join Date: Nov 2006
Thanked 0 Times in 0 Posts
Rep Power: 0
Normal operating temp
Wouldn't Yanmar be the best source to consult for normal operating temp? It must be published in a downloadable PDF of the engine.
Having said that, I know my Universal 15 runs just fine at about 150, so I can't believe your engine is being threatened by 140-something. I think I read somewhere diesel should run hotter than this anyway. It sounds like your alarm is set wrong.