Replacements are only plastic and from what I remember you can not get repair manuals for Exmark.
The reason you where ignored before is because you hijack a thread instead of making your own.
If you ask a question about your machine in someone else's post you are hijacking.
If you put everything in one post how will people know how many problems that machine has. The search feature is really nice but a google search that turns up 500 hits as compared to 1 is very important.
It is simple in almost every forum I have ever been in and that is a lot. The rule is one problem per post. Biggest rule is one persons problem per post.
Problem with most people hijacking a post is they say they have the same problem as the original poster and it turns out it is not the same. Yours is the same but now we only have 1 post on it and not 2 if you understand my point.
partstree.com sells the knob for 6.00 dollarsDoes anyone else out there have problems with their Gravely throttle and choke cable assembly? Only two years old and the plastic holder broke, now have to replace the whole assembly, Have anyone ever changed theirs, I have a ZT 50, is it hard to get to?