They came from the factory with a 24 volt direct electric starting system. BTW I have never herd of a D7F with a pony motor for a starting system.

You will burn 5-6 gallons of fuel per hour if your working it steady.

they are also very reliable and low maintenance. The 3306 cat engines were used in many application and are as bullet proof as any engine ever built. I put several thousand hours on a D7F and found it to be one of the most reliably tractors we have ever owned and we have owned over 100 or so!! I would'nt hesitate one bit buying one that was in good shape to do land clearing on the farm. Will I be able to dig down decent for burying rock piles or will I be having to make a long trench to get a big enough hole? I will be going to look at it on the weekend and hopefully be able to run it and get some pictures and more information. What sort of things should I be looking for on this series of machine and are there any real problem areas that I should watch for? My plan is to clear some brush and burry rock piles with it as well as cut down some high ridges and push the dirt into the low spots beside them. She said he used it for about a week to clean up an old yard site and that was all. It was bought at an auction 3 years ago and the owner has since passed away so his daughter is selling it now. The under carriage im told is about 60% and total hours are unknown. It has a semi u blade and 3 shank ripper. I don't have a lot of information on this machine as of yet but I do know it has the 6 cylinder engine and is a 1977. I have read some information on them and got conflicting opinions as to the reliability of these machines. Im considering buying a D7F dozer to do some work around the farm and would like to know what im getting into before going any further with it.

Caterpillar d6c dozer specs