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Farmall & IHC Tractors Discussion Forum
Show Parts for Model:

41m Rotor button

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CroweMtn Farmall

04-20-2017 10:35:41




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I did a quick search and didnt find the answer so heres another thread. Tractor was running but rough, adjusted carb to no avail so went to the points they were clean so i made sure they were set right. Piston is tdc not 180 out. I knw the button points to the #1 cylinder but with this horizontal distributor is that 11 or 12 oclock. 11 appears to point to number 2 cylinder. Any help VERY appreciated

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CroweMtn Farmall

04-20-2017 13:11:04




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 Re: 41m Rotor button in reply to CroweMtn Farmall, 04-20-2017 10:35:41  
I got her going now. Thank yall



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ih560

04-20-2017 11:47:33




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 Re: 41m Rotor button in reply to CroweMtn Farmall, 04-20-2017 10:35:41  
I want to clarify what I meant by normal rotation, the rotor button rotates CW as viewed from the back , so you rotate the distributor CCW, slowly and watch for the spark.



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ih560

04-20-2017 11:37:55




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 Re: 41m Rotor button in reply to CroweMtn Farmall, 04-20-2017 10:35:41  
Sometimes it helps to put the cap on the distributor and make a mark on the distributor exactly inline with the #1 spark plug tower on the cap. The put the engine at tdc on #1 compression, line up the rotor button with the mark you just made on the distributor. This will get it close enough that it will fire and you can adjust from there.
You can also put the engine at TDC #1 on compression. Put the rotor button before the mark you made on the distributor housing, put the cap and wires back on. Take the number one plug wire and attach it to a plug the is grounded on the engine block, then slowly rotate the distributor in the direction of normal rotation (CW as viewed from the back) and when the plug sparks, you have it set correctly.

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ih560

04-20-2017 11:31:32




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 Re: 41m Rotor button in reply to CroweMtn Farmall, 04-20-2017 10:35:41  
You can slide the distributor out of the adapter housing and rotate the gear around and put number 1 cylinder wherever you would like. I just bought another tractor (H with a kelley loader) a month ago and the previous owner had it so far out that they had the #1 plug wire in the #4 spot to time it correctly.
Like i stated in the above post, with the grease fitting in the distributor pointing up and it timed correctly, the rotor button has been around 2 o'oclock on all 4 of my gasoline farmalls

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CroweMtn Farmall

04-20-2017 11:14:02




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 Re: 41m Rotor button in reply to CroweMtn Farmall, 04-20-2017 10:35:41  
The rotor button has to point tward the number 1 cylinder. Thats My question is pointing tward that cylinder 11 or 12oclock



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ih560

04-20-2017 10:41:38




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 Re: 41m Rotor button in reply to CroweMtn Farmall, 04-20-2017 10:35:41  
I just wanted to clarify and change SHOULD to IS USUALLY, but it wouldn't let me Edit.
Quoting Removed, click Modern View to see



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ih560

04-20-2017 10:39:34




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 Re: 41m Rotor button in reply to CroweMtn Farmall, 04-20-2017 10:35:41  
If it is a distributor than it could be anywhere on cylinder #1, as you can rotate the distributor 360 degrees and put it wherever someone decided to put it.
On most of the distributors when it is installed with the "grease fitting" up, #1 should be around 2 o'clock or so, but again that is irrellevant, as it could really be anywhere depending on where someone decided to stick it and time it.

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CroweMtn Farmall

04-20-2017 10:37:27




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 Re: 41m Rotor button in reply to CroweMtn Farmall, 04-20-2017 10:35:41  
Ive dealt with alot of old tractors and always work on them myself but never had an M and never had one give this much trouble



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