In Reply to: Re: ford 9n posted by David on June 27, 2018 at 19:20:01:
First, don't assume just because you have a 6-Volt battery installed on your tractor that the wiring is correct as the original 6V/POS GRN system. Also, how old is the battery and does it maintain a full charge under load? Simply charging it does not mean it is good. Your local starter/alternator shop can bench test it for free usually. We have many self-help and D-I-Y documents in our HOW-TO's forum -click on it in the top red MENU bar at the top of our home page. Under ELECTRICAL, scroll down to "WIRING PICTOGRAMS by JMOR" to see all the correct ways to wire these old N's whether 6V/POS GRN or a 12V/NEG GRN switch over. Download a copy for reference. There is a lot more to just having a 6-Volt battery. Find your model and verify it confirms exactly what you have, Next step is to test for fuel flow BEFORE you pull Sediment Bulb to replace/clean screens. With engine COLD, when you remove the carb drain plug on the bottom, then open Sediment Bulb Valve 2 Full Turns, see Bruce's Tips, you are checking to see if the carb is obstructing fuel flow. You can then remove the fuel line from carb inlet port at the brass elbow, open 2 turns and observe if fuel flows steady from the Bulb. If not, obstruction is in the Bulb, possibly screens and/or unit plugged. Often flakes of rust and dirt get trapped in the Bulb inlet port and cause obstruction. Gas must be drained from tank first before removing Bulb assembly. Do the Fuel Flow Test before doing any part replacement. Once fuel flow is correct, you will move on to the spark test. As an N-Series Tractor owner, many of us highly recommend that you invest in originals or copies of the essential manuals in order to better understand your tractor.
FORD N-SERIES TRACTOR CARBURETOR:
FORD N-SERIES TRACTOR FUEL SEDIMENT BULB ASSEMBLY:
FORD N-SERIES TRACTOR 9N/2N ESSENTIAL OWNER/OPERATOR MANUALS: