Idle speed of M4700

[banjerpicker]

I bought a used M4700 and it idles at 1000 RPM. I am use to my L2850 idling about 700 to 800. I have adjusted the linkage and far as it will go to slow it down and it is bottoming out. Can I adjust the RPMs down or is that something that is factory set or must be done at the dealer. I have the shop manual but I can't find any information on the subject of idel speed. Have I not looked hard enought?
I can deal with it but it does seem to make me hurry around the tractor when it is idling a little quick.
Thanks Larry

 

[KennyV]

On the injector pump you should see a screw that limits the travel of the linkage.