[Ohio Farmer]

I had an 815 several years ago and I can't remember exactly where it was at ,but there is definitely a drop rate adjuster that takes 2 , 1/2 inch wrenches if I remember right .It should be on the control valve that the header drop hand lever is hooked to under the cab. Mine also used to drop it faster if I was goofing around the barn lot at a slow engine speed versus having it revved up to normal operating speed. Is yours a cable float control? It seems if I remember right there were some changes that had to be made back at the control valve(where the cable hooks up) on the hydraulic lines when you went to corn head(manual drop) versus platform head(cable control) . Do you have a manual. Mine went with the combine when I sold it but I do remember it showing that adjustment screw along with drop rate setting directions !

Also...your cylinders should have some springs on them that need to be set tight enough to soften the fall rate. Wish I could remember what all the settings were.

 

[Ohio Farmer]

That control valve that the cable would normally hook too prolly can't just be left with nothing hooked to it unless you set those hydraulic lines to a corn setting ! That's prolly whats going on..

I cut beans with a 810 13 foot head manually when I first got that combine and it was also the first time I had ever cut beans....man what a learning experience !! I would be hung over top of that steering wheel a nervous wreck and when I would get to the end of a row I would light a cigarette...lol ...turn around and do it again. I have since quit smoking and the next year I had a cable controlled 820 header.! Good Luck Bubba

 

[Ohio Farmer]

Probably something in that valve...I can remember mine would try to let down when trying to raise unless you swiftly moved the valve all the way to raise. If you tried to move the handle partially it would drop it !