I have an Eisemann Magneto no a White truck. To start the truck I have to pull the advance lever half way down. The timing needs to be advanced so that it will start in the retarded position. I don't have a clue as how to change the timing or set it up. Can anybody help? Here is a picture to the timing connection on the mag.
Jack, the little lever on the small cover should move about an inch or so. Counterclockwise retards it, facing it. Usually these are easily moved so if you need the lever in a little different position, it is easily done. I'm familiar with Bosch DU4's but this should be similar. As for changing the timing, usually there is an easy way in the coupling to do so. There are so many variations of those, but it looks like if you take the two bolts out on your coupling, you can move it a hole at a time.
Joe Bell has done several for me, and would be good to ask, too, if something more specific is needed. You know he is always just a phone call away. Remember, too, spark plugs need gapped tighter. Have fun, Tim
Hey Jack if spark lever needs to be down only that far then you are close. It looks to me like you can remove those two bolts (on the coupler), then if you advance the engine enough that the gear driving the magneto moves enough to put the bolts in the next set of holes you should be set. Worst case you try it and move them forward again. Can you hand crank the engine? If so, that's the easiest way to move it around a bit (definitely don't bump the starter if it has one as it'll probably go way too far). Or you can put it in gear and roll the truck forward a bit. I'd move it one hole forward and try it.
I'd recommend .018" on the spark plug gap.
no different than any other ignition, set the motor to top dead center #1 compression stroke (found by turning over with your thumb in the plug hole) then hook a test light to the points under the cap to see when they open. retarded for hand crankinking will be slightly after top dead, and with your lever advanced, you should be before top dead a few degrees. some fooling around will tell you whats best as long as you are not trying to start it when its firing before top dead center
He needs to advance the mag- taking the bolts out and rotating the engine will retard it more. The mag needs to rotated against the rotation to advance the ignition.
Quite right Dan! I should not attempt to post while watching a TV show with the wife. I had it backwards so ignore me Jack.
Jack, you can also find top dead center by taking the rectangular cover off of the top of the bell housing right behind the cylinder block. There is a pointer there and the Flywheel has marks on it.
What Tim and Seth said about the plug gap is important to remember.
My '23 starts with the spark half way down also. FWIW.
Thanks to all for the assistance and guidance. The plug gap was set at .040! That will be changed first then the timing will be adjusted. You all have been a great help.
I have a DU6 Bosch on my '26 Hupp. I recently picked up a Dykes 14th edition. If you don't already have one it is a very useful addition to the library.
It has a wealth of information including a large section on magneto's