My Father-in-law has recently given me a 1957 case 400 tractor. The tractor was "rebuilt" in the late 80'sand then was parked in the mid 90's inside a shed. He states that it ran fine the day it was parked. To shorten this story, what is the best steps in getting this thing started? I only know that it is a gas engine, I do not know if it is a 6 volt or 12 volt system (it will need a battery first thing), The tractor is about five hours away and I would like to try and get it running in a weekend so I can drive it on a trailer and bring it home! Any help would be great!
TractorData says it's 6V.
TractorData.com J.I. Case 400 tractor information
If you're sure it's a gasser, then it's a Case 400B (37 hp pto) with a 4-cyl Case-built engine.
The Case 400 is the diesel version.
It's fairly heavy (3900 lb), but you might be able to winch it onto your trailer if you can't get it running.
I would remove the plugs and rock the tractor by pushing on the rear tires to see if the engine is stuck (watch the fan for motion).
Clean or replace the spark plugs. Ask your FIL to check the type of plug that's in the tractor now and get a new set if you don't want to spend time cleaning and gapping the old plugs.
Bring some 10W40 motor oil and an oil filter and do an oil change. Your NAPA store can ID the filter for you.
Fill the radiator with water.
Drain the old gas, if any, from the tank. Add fresh fuel if you think the tank is clean. Otherwise rig up gas delivery from a temporary 1 gallon container. Clean the sediment out of the fuel filter bowl.
My guess is that it's a 4-cyl flat head engine with an updraft carburetor. You need to make sure the carburetor is feeding gas to the cylinders. You may have to remove the carburetor, connect the fuel line and work the throttle linkage to see if you're getting gas flow.
Try to start it. You may get lucky and get it running.
However, if it's like my 1951 Minneapolis Moline BF that I bought last Jan, the engine compression will be nearly zero. If it doesn't start, do a quick compression test on the cylinders to see if there's any hope of getting it going. If not, you'll be winching it onto your trailer.