Friend has a '76 model 9600 w/3774 hours that suddenly wouldn't start after 3 week sit after mowing 20 acres flawlessly. After replacing battery,(under warranty)new battery still no go, found crud in fuel filters-mud/rust. Cleaned tank, flushed lines, removed/replaced transfer pump and fuel spilled out from cavity where actuator rides cam. ?-1. Is fuel spilling from this cavity ok? There was a thin layer of sediment on the floor of this cavity. The tractor is 200 miles away. We want to have our ducks lined up when we return to replace bad tank outlet fitting and re-prime system. Thx for any help you can offer.