yes im new to the dozer world but i always have wanted to run a dozer i picked one up for the first time in my life i've never ran one before im alone on this anyway im 41 years old with some common since if that matters or helps me out any.i know this my d4 7u 10101 dozer sat 25 years but reads 800 hours on it the women i bought the dozer off of was a sweet 75 year old women her late husbands owned the dozer crawler its the 7u10101 and with winch anyway I'm haven problem getting it to go into any gear stuck like chucklol.but everything seems to be in great shape a little rust but not anything like ive seen on some that just get up start and not anything wrong witch don't mean anything I'm shore but using my common sense a little there but what could it be i just would like a pointer as to what i can do to get it to go into gear so i can drag start it incase my pony wont run witch im doing some work to but incase i prolly end up dragging it to get it to run but that is my hold up another thing is i'm prolly going to update to a starter for my big motor i also have the books from where the man bought the dozer these four books are in great shape and the do tell in great detail about what to do but to me that is the way to go and a lot of reading but at lease ill learn my girl but i've read and studied those i've went out there looked and i get lost kinda if you know what i'm saying not lost but you know maybe a little confused i'm new what to expect with no teacher i thought sense i love the older stuff way better to me and i got into this guy off youtube great teacher and just awesome to watch lost his job at ford do to closing and took on working on the older d2 tractors but anyway if i could get someone that is willing to write me back and guide me threw what i need to do as a binger and that will understand me i'm a smart fella but will help me i would be grateful for there time i think its a great thing how we all can be there for each other in are Owen way that is what life was for and i really think that its great to be able to come support the site and be part of you all team here maybe few years ill be able to help someone that will be like i am so that being said ill wait and see who is out there that understands where i am with this i hope they can anyway god blesss thank yu guy for all the input you give to us begners. my name is jason i'm from tennessee guys .

Hi Jason,
The left lever is the hand clutch. If you shove it all the way forward you should be able to shift gears. It may be engaged or stuck engaged. It may take quite a bit of force to snap it into disengagement. There is an interlock system that locks it in gear. It is accessable through the plate beneath the air cleaner.
Good luck

Welcome, lot of experience and knowledge here everyone is generally willing to share with new operators.

Read the operators manual over and over then come with the specific questions on thing your not sure of. Having grown up with the old machines it is hard to remember to talk of some of the most basic stuff. So to me it is easier to answer questions than just trying to not forget some of the basic things.

You mentioned you tube, and there is a lot of stuff out there some not near as good as others. Squatch253 is member here and most here think he does a good job of explaining things as well as showing what to do on his you tube channel.

get yourself copies of the OMI,servicemans reference and parts book for your machine. the parts book is very handy as amny parts are still available from the dealer netork but they need part numbers. as they dont have listings for all the older models.

Welcome jaymaynard! I second or third the notion of getting a set of quality operator, service and parts books. Look around, they are there. Also don't be afraid to ask questions here on the bulletin board or anywhere else. A friend of mine told me when I started on my D4 that everything was pretty simple, but most things are HEAVY. He was right. sometimes a little before knowledge saves a lot of useless taking apart and putting back together.
There are many knowledgeable folks here who are not afraid of giving advice or opinions. You will soon figure that out on your own.
Good luck on the tractor and again welcome to the Bulletin board and if you are not already, please become a member of ACMOC.