Mowing john deere 950 power loss

[daw1211]

I have a john deere 950 i bought about a year ago. runs and starts good but after abount 1/3 hour or 45 minutes of heavy use at full throttle, it looses power. changed fule filter, oil, and oil filter. air filter looks good but will change next. No smoke of any kind. It doen't seem to be hot but can't be sure ( no bubbling or steam). checked hot warrning system by grounding wire to fram and turning key on ( light came on). Help!

Thanks!

 

[kuboman]

I have a john deere 950 i bought about a year ago. runs and starts good but after abount 1/3 hour or 45 minutes of heavy use at full throttle, it looses power. changed fule filter, oil, and oil filter. air filter looks good but will change next. No smoke of any kind. It doen't seem to be hot but can't be sure ( no bubbling or steam). checked hot warrning system by grounding wire to fram and turning key on ( light came on). Help!

Thanks!

Check tank vent by running the cap lose. Also change both air filters assuming yours has a double elements. Make sure you don't have debris in the tank that can plug the line.:thumbsup:
Does it have a mechanical/electric supply pump. The electrical ones can be tricky to diagnose as they can run normal and appear to supply fuel but quite when under load.