Re: 646 questions
After a few days with the new tractor:
I found a screen door spring that makes the travel pedal usable. Still some play in it but I want to use it for a while before I start working on it. Without any weight in the weight box, it lifted a full bucket of manure without hesitation. The PO said that the hydraulic system had hydraulic oil in it. I did not press him on whether that was an assumption or if he had put it in there but since he replaced the pump, I assume that he put at least some hydraulic fluid in. Is it critical that I replace it with motor oil right away? The engine oil was down below the fill line so i filled it up and tractor smoked when first started after that but has not smoked again. Since the compression is good, I'm not worried about that. It has started quickly every time so I'm convinced that the fuel is leaking back down in the line or maybe a tiny leak out of the bowl after sitting for a long time. That is exactly what my 448 did and a carb and fuel pump rebuild solved the problem. Finally, there is a short tube coming up out of the right side of the blower housing (page 18 of parts manual). It almost seems like there should be some kind of flapper valve over this but nothing in the parts manual that I can see. Any thoughts? And I almost forgot, the hour meter says 294. Obviously no way to know when it was disconnected but still better that if it read 2940. There is a nutted yellow wire behind the sheet metal, is that the wire for the meter? I could not even find the hour gauge in the parts manual. Thanks to all who weighed in with advice and encouragement. LP
Last edited by larrypac; 06-04-2019 at 07:47 AM.