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Timing a SA distributer Any suggestions welcome!

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scott#2

12-03-2005 18:16:11

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I have searched hi and lo for the mark on the flywheel that you line up with the tab on the cover. I swear it is not there. Cleaned, rubbed polished searched, searched, searched. It just aint happenin.

Does anyone know hom many degrees btdc or atdc or is it at dead tdc that # 1 fires at? In other words, does anyone know exactly where in the stroke, #1 piston is, when that elusive mark on the flywheel is lined up?

I need to at least static time this thing before I try to fire it up. After that, I suppose I can mark the flywheel or pully and then check the advance, if it uses advance?

Thanks for any help,

scott#2

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scott#2

12-04-2005 04:37:10

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Re: Timing a SA distributer Any suggestions welcom in reply to scott#2, 12-03-2005 18:16:11

Thanks for all the help. I have searched that flywheel from top to bottom for hours, it simply isn't there. As long as I know it fires at TDC, I can deal with it. My manual only covered the magneto system, guess I'll have to find a better manual. This tractor was basly rusted when I began the project. I guess it's possible that that mark sluffed off from all the rust.

scott#2

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El Toro

12-04-2005 07:32:22

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Re: Timing a SA distributer Any suggestions welcom in reply to scott#2, 12-04-2005 04:37:10

Another way to find TDC on NO1 piston is once you feel compression is to drop a big handled screwdriver into the cylinder. When the screwdriver quits rising your No1 piston should be at TDC. Your rotor should be pointing to No1 position in the distributor too. You want the handle big enough so it doesn't drop into the cylinder.

I would mark the damper pulley with some white paint and then use your timing light. I have the inductive type that you just fasten the plug lead over No1 plug wire. You can use another battery if you need 12 volts or another vehicle to hook to that battery that has 12 volts. Hal

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Hugh MacKay

12-04-2005 02:00:31

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Re: Timing a SA distributer Any suggestions welcom in reply to scott#2, 12-03-2005 18:16:11

Scott: It has been 47 years since I first came in contact with these little tractors, never have I seen the timing marks on one yet, but then I've never looked for them. Probably a good reason. In that time I've had 6 of them.

The way I look at this, one first has to determine if it is at TDC on compression stroke. Once you determine that, put the distributor in with rotor pointing to No. 1 plug terminal. This doesn't have to be exact as one can rotate the distributor to match. If you think it should be exact, pull the valve cover, valves will soon tell you where crank is. As far as setting timing advance, you can get it much better by ear with tractor running than by using a light. Any 4 cylinder gas Farmall will let you know when right.

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gene bender

12-04-2005 00:18:28

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Re: Timing a SA distributer Any suggestions welcom in reply to scott#2, 12-03-2005 18:16:11

If you get it on TDC the mark is there. You maybe were 180 deg off or on top of exhaust stroke. Remember on TDC both valves will be closed. I use a mag lite to see the piston on TDC.

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Peabody

12-03-2005 19:49:54

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Re: Timing a SA distributer Any suggestions welcom in reply to scott#2, 12-03-2005 18:16:11

Funny thing about that mark. If you look in the Owner's Manual, the illustration makes it look like something that would slap you in the face. Not the case, in most instances. As others have said, get it to #1 TCD on compression stroke, you will be close, then clean the flywheel and smear some white paint around, it may show up. Even if it doesn't show up, you should be close enough to "in time" to get it to start, and then adjust time with the distributor. Good luck!

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CNKS

12-03-2005 19:31:18

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Re: Timing a SA distributer Any suggestions welcom in reply to scott#2, 12-03-2005 18:16:11

The mark will be there. It may be just a mark with no letters. I found the one on my C by propping myself up until I was more or less comfortable and moved the flywheel with a screwdriver, cleaning as I turned. If you put # 1 at TDC first you should be in the area.

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wanabefarmer

12-03-2005 19:15:53

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Re: Timing a SA distributer Any suggestions welcom in reply to scott#2, 12-03-2005 18:16:11

as per IT manual should fire at TDC. timing mark should be in front of the starter ring gear should look like this DC -- 1-4

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Gene-AL

12-03-2005 19:13:35

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Re: Timing a SA distributer Any suggestions welcom in reply to scott#2, 12-03-2005 18:16:11

Quoting the SA manual: "The timing pointer can be seen by removing the hand hole cover in the bottom of the clutch housing." It further says to turn the flywheel until "DC 1-4" lines up with the pointer (on the housing). Timing is set to TDC with #1 cyl on compression stroke (use finger on #1 spark plug hole to feel compression). Don't forget to FIRST set the point gap to 0.020" (per manual) with the points rubbing block on the cam high point before timing is set.
Have fun...

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Georgia Boy

12-03-2005 18:53:04

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Re: Timing a SA distributer Any suggestions welcom in reply to scott#2, 12-03-2005 18:16:11

It is set at TDC for a regular A and is probably the same for a Super A. I had it easy because I could see my timing mark. The IHC manual says to take out the #1 sparkplug and put your finger over the opening, crank until you feel pressure, when the pressure stops crank just a bit more and that should be close to TDC. The tune-up and rebuild videos you can get at this site are really helpful. They show you how to find TDC by watching the valves, but at the moment I can't remember now how it works.

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