Posted by Jeff B. on February 22, 2009 at 20:48:58 from (69.20.162.151):
In Reply to: Allis Update-POP posted by Lanse on February 22, 2009 at 18:21:06:
I've been watching this saga with Lanse for awhile now. LOVE the videos. Let me take a stab at explaining the timing thing to him. Once you have the concept of timing an engine, you can time all engines all the time.
First: with the distributor cap off, note the direction of rotation of the rotor.
Second: turn the engine over until the #1 piston is at top dead center of the compression stroke with the timing mark at exactly zero.
Third: Note the position of the rotor. Set the cap back on and make sure that the number one spark plug wire comes out if the distributor hole closest to the rotor firing point ahead of distributor rotation.
Fourth: Make sure the firing order of the spark plug wires follows the direction of rotation around from the #1 wire that you just set.
Fifth: Put the cap on tight and set the #1 wire against the block or somehwhere you can watch a spark jump. ( I stick a screwdriver in the boot and set it about 1/4" from a ground.)
Sixth: loosen the distributor clamp and slowly rotate the distributor back & forth. As you do, you can hear and see a spark jump. After you've established that every time you turn the distributor back and then ahead you can see /or hear the spark jump you're on the home stretch.
Seventh: back the distributor up (opposite the rotation) and slowly turn it ahead just until you see/hear the spark jump. Tighten the distributor clamp down. What you're doing essentially is setting the distributor up to deliver a spark right when the piston is at top dead center.
Your tractor should fire now. If it spits back through the carb, you're 180~ out of time.
Set the engine on top dead center again with the rotor set to fire #1. Take the distributor out and rotate the engine exactly one turn back to top dead center. Put the distributor back in with the rotor lining up with the #1 wire again. You have to note that as the curved distributor gear drops into place it advances the rotor slightly. One tooth off can make it not fire, so you have to be exact. If you have followed this and your engine still won't start then you may have other problems.
You can also change the 180~ problem by rotating the distributor 180 opposite, but then you have to change the wires around, too. It's easier for me to visualize it if you turn the engine over instead. After it runs, then you can dial in the timing with a timing light, but this should get it started.
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