Small Engines (Lawn Mowers, etc.): John Deere Model 650 Diesel tractor, john deere tractor, john deere model

Question
I have a 1986 John Deere Tractor 650, 2 cyl in line, valve in head diesel engine.
Changed the oil and filter, as well as fuel filter for spring time use.
Afterwards, bled fuel lines, started up and noticed that there is considerable engine power loss (from 2500 rpm to about 1500 rpm) when I engaged the bottom mower deck which is powered by an electric switch that turns on the pto.  Any thoughts?
Thanks-
Greg

Answer
Hello Greg:

Sorry for the Delay. This Question was Located in the Question Pool. Did you Check the Deck Pulleys and Idlers for Binding or Rough Bearing Noise? You can View a Breakdown/IPL of the Engine and Mower at this Site Addy, http://jdpc.deere.com/jdpc/servlet/com.deere.u90490.partscatalog.view.servlets.H... and Enter the Model Numbers and Click Find. Then Select your Model from the Search Results Area. Then Select the Sectional File. Then Select the Section of the Mower you Wish to View Online. If you Hit a Snag or this Does Not Correct the Problem,  I am Here if You Require More Assistance. Hope this Helps. Let me Know What Happens, Please. May the All Mighty Bless You and Yours. Thanks.

Good Luck

Respectfully

John

PS: I am Allowed to Answer 10 Questions a Day. If you See I am Maxxed Out, then Try Submitting your Question at or Just After 8pm EST (US). My New Day Starts then. Thanks.

Respectfully

John