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Re: TO-20 Timing

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Dick Czuchra

02-14-2012 13:58:21

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Thanks to all, for the help/suggestions. Tractor is 450 miles away, and will do some more troubleshooting , in a about a month, from now. I agree that the submersion in water should not have affected the timing. But from all indications, No.1 piston at TDC, compression stroke and all the timing marks on the flywheel are at a 6 o'clock,(not at 4 o'clock, where the timing hole is), and I agree 7degrees BTDC sounds more realistic
(the 32 degrees in the manual is for??), but the way things sit right now, I'm wondering was the flywheel replaced, replaced incorrectly and someone made their own timing mark with yellow paint?

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02-14-2012 15:32:10

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 Re: TO-20 Timing in reply to Dick Czuchra, 02-14-2012 13:58:21  
If you are concerned that the flywheel is not correct or mis-marked, you can use a vacuum gauge to get proper timing. Attach a vacuum gauge to a good source. Some ferguson manifolds have a port just above the carb. I tapped my manifold in that same area and put my own in. If you can somehow get the engine to run, rotate the distributor slowly until you reach 18 inches or more vacuum.18-20 inches will have your engine timed perfectly. The highest setting is always best.I time every engine this way and have always had great long term results. This method is perfect for engines that have dampners that may have slipped a little. If you are unable to get vacuum readings that high, you have a problem somewhere else. I have owned two TE-20 Fergusons and neither tractor had any timing marks at all. I'm not sure why but both tractors were split and the flywheels were both cleaned thoroughly. One tractor did have a paint mark but since I didnt put it there I didnt trust it and I admit I didnt want to try to peek through that little hole and time it once I put it back together.The vacuum gauge is much easier to see while I am standing.

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02-14-2012 14:54:40

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 Re: TO-20 Timing in reply to Dick Czuchra, 02-14-2012 13:58:21  
The flywheel has an offset stud and only goes on one way. I don"t know what manual you are using but you should get the genuine Ferguson Shop Manual. A lot of this info is in there and you can find them for under $20 plus shpg.

What indications are telling you that the piston is at TDC on the compression stroke with the 7 BTDC timing mark at 6 o"clock? Move the timing mark til it shows 7BTDC in the notch of the timing hole and look where your piston is at, making sure both the vaves are closed on #1.

An easier way to do this is to pull the #1 plug, hold your finger on the #1 pug hole, nudge the starter till til you feel pressure. That indicates you are on the compression stroke. Now nudge the starter til you see the 7BTDC in the timing hole and rotate the engine by hand to set the timing position in the timing notch. Then loosen the distributor, pull the plug wire off #1 hold it near a good ground with ignition on, rotate the distributor back and forth til you hear the spark snap. At that point you are statically timed. it may take you af ew times to get it right and when you feel you do, then tighten down the distributor and start "er up.

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