Kubota G5200 question

[stars on my arm]

When I mow the lawn with my tractor, it wants to stall out when I engage the pto. After it runs(barely)for a while it seems to pick up steam. What can I do? I always grease every fitting after a couple of mows. Any advice?

 

[eserv]

Does it smoke under load? Sounds like it might be running on only two cylinders!

 

[stars on my arm]

No smoke, just wants to die when I engage the mower deck. Runs great otherwise.