In Reply to: 8n will not start posted by jack on May 30, 2020 at 10:41:30:
There are a few systems you should have checked first before assuming everything was "shot". First, if tractor was setting for a while and it just clicked when starter button depressed, your battery was most likely dead. The OEM Ford electrical system is a 6-VOLT/POSITIVE GROUND setup. However, don't assume just because the battery is 6V the system is wired correctly. Most non-starting issues are due to incorrect wiring whether 6V or 12V. One of the biggest mistakes/myths newbies (and a few oldies as well) make is assuming a 12V change-out is a an 'upgrade' or improvement and failing to do any critical technical tests. If it didn't start on 6V what makes you think it will on 12V? 12V has its pros and cons and nothing wrong if done for all the right reasons -faster starting especially with a worn engine, brighter lights, can run equipment like a spray pump, winch, or 8-Track Player. So, on your 12V you removed the generator and replaced it with an alternator, but you remove the Voltage Regulator too? Is the OEM Ballast Resistor in the circuit? Did you pull and tune-up the distributor? If so did you time and install the dist correctly? Go to our HOW-TO's forum under ELECTRICAL for WIRING PICTOGRAMS -see LINK below. Also invest in the ESSENTIAL MANUALS - well worth the cost. If you want to sell your old generator, contact me, email is open.
FORD 8N TRACTOR ESSENTIAL OWNER/OPERATOR/PARTS/SERVICE MANUALS: