Been having problems with my 672 stump grinder. Oil temp light comes on after a while when using. I’ve had it looked at and checked and no one can find why it’s coming on after it being under load. I do think I have an injector issue but that wouldn’t make the oil temp light come on would it. Maxine ran fine until I changed a fuel filter and fuel line and it’s been dying on me once it gets loaded up. Thanks