DK40se HST, Throttle lever seems stuck at idle

[derek01]

I had that problem while mine was under warranty the tech removed the plastic and loosened up something at the throttle since I am not looking at the tractor I can not remember just what he did maybe if you remove the plastic and look in there it will be self explanatory.

 

[ritcheyvs]

Looks like #13 and #14 provide adjustable friction:
OEM Parts

Maybe yours is rusted or needs adjustment. Or maybe the bell-crank is frozen. Should be pretty easy to diagnose, weather permitting.

 

[caver]

Thanks ritcheyvs,

I kept bringing up the wrong drawing and the lever did not look look what I know mine looked like. That's thw right drawing.

Brad

 

[caver]

Well I couldn't get two of the screws loose that hold the upper housing cover on. As shown by arrows, those holes were filled with fresh black silicone. It looks like water has collected down in the holes and rusted the nut inserts. I believe these nuts are molded into the plastic housing.

Original view for those with broadband internet.


Chassis Instrument Cover

I could get cover #3 off but cover #7 has the seized screws #6.
I didn't have an inspection mirror but was able to put my cable lube tool on the cable. I now believe the problem is under cover #7 due to the noises I was hearing.
I suspect the dealer put the silicone in the end of those holes in the picture. The picture was taken after I dug the silicone out. It appeared that some water was still down in the "well". I soaked it out with a towel and it didn't smell like anything petroleum based. I shot it with some PB spray. I will soak again when I go back over because the alternate is to drill the screw heads off.

 

[Coyote machine]

Before drilling out try using a suitable drift - 'punch' to place on top of the screw head, then hit it with a hammer to try to shock the screws threads loose enough to turn with the correct size nutdriver or socket. Or, depending on the depth of the holes try lining them with aluminum foil and leaving the bolt heads exposed and focusing the tip of a propane torch onto the heads long enough to heat them up without burning the cover. Then hit them with the drift/punch hammer. If none of the above works use a titanium bit and drill them out.:thumbsup:
Oh, I'd find a suitable sized rubber plug to fill the holes to keep the same thing from happening in future.
Side note: you'd think they'd put the holes on the bottom and screw up into posts on the top cover preventing this kind of situation?!:confused2:

 

[caver]

UPDATE This problem got worse recently so I tore into this weekend. Turns out those screws where combo screw head/hex head bolts.......don't know how I didn't see that the first time. That little roller is a bit sloppy and dry. Greased all parts up and works smooth as silk now.