would this be a standard (cube style) C6000? or a C6000GT?
the standard version of this truck you sitdown and drive
the GT style version of this machine you stand up and drive.
giving us a complete model and serial off the dataplate might be more helpful ;o)

but...

the standup version (C6000GT) it only shows the throttle assembly which is part number VPL00001-00.

If i'm not mistaken the standard C6000 throttle is electroncially controlled. I cannot find any throttle cable assy in its manual.

Hope this helps