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Gordo: If the tractor is a "28, it"s a Model F, and the magneto is an aftermarket addition. (Stock was a box on the side of the engine with four trembler coils -- one for each cylinder -- and the internal magneto on the flywheel, which is an array of sixteen V-shaped magnets passing by a stationary magnetic pick-up on the side of the engine.) I"m not sure, but I think the Robert Bosch magnetos had a lever on them that you could use to advance or retard the spark. (They were often used on the later Model N"s.) ***When starting, be sure to retard the spark: If you don"t, the likelihood that you will injure your arm/wrist/hand/shoulder when the engine kicks and the crank flies backward is greatly increased! *** Once the tractor starts and warms up, advance the spark until the engine runs smoothly. If it begins to knock, retard it a bit and it should smooth out.
Not sure what you mean by "tiny little cup over the fuel system", so I"ll skip over that and go on to the next point...
The choke rod: Pull it all the way back, as far as it will go, through the dash toward the seat. That"s fully choked. It takes quite a bit to gag her, so spin her over a few times at full choke until she farts, then back it off a wee bit (even at 80° ambient). Might take a few spins to get the fuel worked through the system and into the manifold, so be patient and don"t be afraid of over-cranking.
Once she starts, let her warm up for a few minutes before trying to put her in gear -- the F has a wet-clutch system that works stubbornly until the engine oil has warmed up. (Otherwise, you"ll have to jam it into gear, possibly damaging the transmission in the process.) Hope this answers your questions to your satisfaction. If you need more in-depth info, put a shout out for Butch Howe (he usually follows this forum) -- he"s forgotten more about Fordson F"s than a lot of people will ever know. Good luck, and let us know how you make out. -- Maine Fordson
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