megaboz
Platinum Member
Billy,
Did you finally figure out your issue. I have a BX1850 that seems to have the same symptoms. I bought it used from a dealer so have no idea what the previous owner has done to it.
The tractor seem to run great and has great power but after about an hour so so it will start to drop rpms almost like I'm closing the trottle and sometimes it completely stall. As far as I can tell it's not overheating or anything and I'm not getting any click from the fuel stop which I assume means it's not a safety shut off short circuit or anything.
If I notice the drop in rpms quick enough I can usually just disengage PTO clutch and stop moving and it will sit there and idle around 900-1000 rpms for a few seconds and finally picks up again. Once it starts doing this, it then seems to do it very often. If I let the tractor sit for a bit it seems to work again for awhile (seems to depend on how long I let it sit) and then the symptoms start again. If I let it sit overnight then I can start mowing again for an hour or so until the symptoms repeat all over again.
I don't think your issue is anywhere near the same. The OP machines shuts down when using the throttle pedal, otherwise it runs fine.
My theory is that you may have a heat issue or a clogging issue.
I say heat because it could be getting got enough for a rubber fuel line to maybe colaspe on it'self. The fact that it seems to cool down and run better also leads me to believe it is some way related to heat.
On the clogging issue, It could be possible that the tank is not venting correctly, something in the bottom of the tank, or an obstruction in the fuel line.
Depending on how soft the fuel line is, it might be worth replacing anyway just to be sure, while a pain to replace it just might be worth the effort depending on the age of the machine.