How to Time a Magneto on the F 20 McCormick-Deering Farmall Tractor Part One

this is a 1938 formal f20 and today we're going to look into what it takes to time the magneto to the engine dead timing pretty much starting over [Music] timing is pretty critical keeps a person from getting kicked when you're cranking make it really dependable on that part what i like to do in order to do that and you can do it several different ways but i like to pull the engine side covers and then i'll pull the spark plugs and the valve cover because then i can watch the valves um and see where we're at exactly on the engine because this is the exhaust valve and this is the intake valve for the number one cylinder so when we go to turn this engine over and you can i can kind of get to the crank here you can see the uh exhaust valve is opening there so now we know we're on the exhaust stroke on number one there's the intake valve opening and now it's closing and so in the crank case we can see number one rod going up when it's almost straight up then i'll take the time and try to find the timing mark on the flywheel and that's down in here should be a dc and a little line on the flywheel i like to use a die grinder and a wire brush clean up the flywheel a little bit try to find that mark and then i'll mark it with a white paint pen so turn it over and find our mark my paint pen work was a little sloppy there so a little bit of fine tuning here we'll push this back a hair and uh we should be number one top dead center right there book says to get it on number one top dead center um so we have it time for sure you can uh without pulling the valve cover you can do that in the engine bay by uh watching your cam lobes you can see when exhaust and intake are opening and closing on number one just through the side covers and you can also time it that way without pulling the valve cover if you want to the mag coupler over here is held on with two bolts and a shim in there it's got an adjustment you know to fine-tune the timing on the mag check your play on the timing gears doesn't seem too bad i like to take that off so that um i'm ready when the mag's ready to put on let me go over here to the magneto this is an f4 international mag the book says to uh fully the magneto so this lever here when it's all the way up that's fully take this clip and remove that cover don't have to drop it remove the distributor cap and here's your pointer number one cylinder is here generally on these f4 magnetos so it's uh where you want to turn it to line up with number one now if you turn it clockwise or in the rotation that the magneto turns on the engine your impulse may be set so i turn it backwards so that i don't have to deal with the impulse and i get the pointer here pointing in the general direction of number one cylinder location number one spark plug wire location on the distributor cap then we go in here and we get it to where the book says the points are just beginning to open which is hard to see but you can see it when you are doing it a lot easier than this camera but there it's opening c so when the points are just beginning to open that's where you want it now the this is a fiber coupler this part goes to the magneto we'll take that all over to the tractor and time that install it now here we have the coupler again and the fiber coupler is installed in the back of the mag lined up we're going to line up the other half of the coupler that goes to the governor connection here like so and uh fit that up to there and then we're going to see which hole in here lines up the closest checking to make sure still that we have the points um just beginning to open on number one it looks like right here's where we want it right there so i put in one bolt and the other bolts going to be a little harder to get to so we're going to snug this one down and turn the engine over put the other one in try it out then after that you should be able to install your bolts and we're going to check it to see if it's um correct and that's pretty much how you dead time the f4 magneto to the mccormick bearing tractors

Channel: Russ Hamm

Views: 6,198

Keywords: McCormick Deering, Deering, IH, International Harvester, Steel Wheel Tractor, Late Model Tractor Start Up, McCormick Deering Start Up, Goessel Kansas, Antique Tractor, Tractor Crank Start Up, Tractor, Threshing, farmall magneto timing, magneto dead, farmall a magneto timing, farmall f-20 tractor, farmall f 20 steel wheels, mccormick deering magneto timing, mccormick deering farmall f 20, mccormick deering tractor, red tractor

Id: 1bI1hJrksqU

Length: 8min 38sec (518 seconds)

Published: Wed Dec 08 2021