Bought my 640 and didn't use much for work until now. After the engine is hot (after using 15-30 mins bush hogging) the engine starts to starve for fuel. When the issue is happening, if I pull out the choke 1/2" or so the engine will settle down, which leads me to believe it's gas related. *Because of this I did not check ignition coil.*
What I did so far...after I looked on the YT website...
1. I jumped ignition switch for fun... No difference.
2. I checked gas cap- venting tank- no difference.
3. Checked fuel line for heat...My fuel line was rerouted by someone else. At that time, the sediment bowl was replace, along with a newly rebuilt carb. I can put my hand on the fuel line and it's not warm at all.
4. I very recently replaced shut off valve. Checked screen - ok clean.
5. I removed fuel line at carb. Nice, steady stream of fuel coming from tank.
6. I noticed sediment bowl was tilted almost at 45 degrees. Upon further inspection found gunk in bowl. Cleaned bowl.
7. Had an issue where fuel wasn't being shut off in carb. Removed carb, thoroughly cleaned and found spring in float was pinched. Repaired spring- seemed ok... cleaned carb while it was off of tractor.
But I'm thinking that sediment bowl at 45 isn't good. I took a picture and posted. So I started looking at pictures here on site and found that fuel line used to run between head and exhaust manifold. Someone reran in an attempt to stop fuel from boiling? And they put the wrong sediment bowl on tractor because clearly it doesn't fit between generator and carb.
So.. I bought the right one (taller and skinny). I'll need to make sure my bolt will fit properly (I saw pics here about bolt stem hole is supposed to be seen in square opening in the top of the sediment bowl.)
But before I removed the current bowl... does anyone have any information if the bowl is at 45 degrees will it still work?
And if you think the sediment bowl at 45 will not affect the operation or cause the tractor to starve for fuel, do you have any other ideas on what to check?
Thanks in advance for your help,
wfd2
What I did so far...after I looked on the YT website...
1. I jumped ignition switch for fun... No difference.
2. I checked gas cap- venting tank- no difference.
3. Checked fuel line for heat...My fuel line was rerouted by someone else. At that time, the sediment bowl was replace, along with a newly rebuilt carb. I can put my hand on the fuel line and it's not warm at all.
4. I very recently replaced shut off valve. Checked screen - ok clean.
5. I removed fuel line at carb. Nice, steady stream of fuel coming from tank.
6. I noticed sediment bowl was tilted almost at 45 degrees. Upon further inspection found gunk in bowl. Cleaned bowl.
7. Had an issue where fuel wasn't being shut off in carb. Removed carb, thoroughly cleaned and found spring in float was pinched. Repaired spring- seemed ok... cleaned carb while it was off of tractor.
But I'm thinking that sediment bowl at 45 isn't good. I took a picture and posted. So I started looking at pictures here on site and found that fuel line used to run between head and exhaust manifold. Someone reran in an attempt to stop fuel from boiling? And they put the wrong sediment bowl on tractor because clearly it doesn't fit between generator and carb.
So.. I bought the right one (taller and skinny). I'll need to make sure my bolt will fit properly (I saw pics here about bolt stem hole is supposed to be seen in square opening in the top of the sediment bowl.)
But before I removed the current bowl... does anyone have any information if the bowl is at 45 degrees will it still work?
And if you think the sediment bowl at 45 will not affect the operation or cause the tractor to starve for fuel, do you have any other ideas on what to check?
Thanks in advance for your help,
wfd2