I got my "new" tractor home and it is the hardest starting engine when it is cold out (25 degrees in barn). Well after the tractor warms up it runs good BUT rich. It will restart fine once the engine is warm. But, the next day, starts hard again.
I am cleaning the fuel petcock screen, fuel pump screen, sediment bowl, and inlet on carb. I figure this is just for good measure.
But when I took apart the carb, I found the float return spring was missing. Am I right in assuming this is the major reason it is running rich? This spring helps close off the needle right? It was really pushing gas out the muffler one time, enough to start backfiring.
Any advice or info before I put everything back together would be great.
The wife is still trying to figure out why I would buy a tractor that runs, then take it all apart!! Told her, I am just trying to make it run better!