Welcome! Please use the navigational links to explore our website.
PartsASAP LogoCompany Logo Auction Link (800) 853-2651

Shop Now

   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver

Discussion Forum
:

Farmall F-20 timing

Welcome Guest, Log in or Register
Author 
Andrew

04-21-2003 14:40:31




Report to Moderator

Where do I find the timing mark on the flywheel on an f-20 tractor? Do I have to pull the clutch assembly to get to it? Or can someone tell me where the spark should occur,TDC... etc.




[Log in to Reply]   [No Email]
Bill Smith

04-24-2003 12:30:50




Report to Moderator
 Re: Farmall F-20 timing in reply to Andrew, 04-21-2003 14:40:31  
The timing marks are located in the hole of clutch housing when at TDC. I have never been able to see those marks. I always find the TDC the old fashioned way. Find the compression stroke of #1 cylinder and then run the piston right up to the top of stroke. Much easier to do with all the plugs out. I just take mag off at this point. Put a wire or nail in (I'm not sure which one) one of the oil ports on the front of mag. You can in-activate the impulse this way. Put the advance all the way down (in the run position). Rotate mag until the points just open on the number one plug. In this postion is how the mag needs to be bolted to tractor. As mentioned by others, you may have to unbolt the coupler thingy mergiger and rotate a hole or two to get everything lined up. After you get mag bolted on, remove the wire or nail from impulse, finish putting tractor together, adjust the spark advance on mag to the start position, and you should be able to crank it up. Ounce it is started, lower the advance to run position. A gasoline engine that is timed correctly should fire slightly before TDC. Since you have a mag with an advance, this would be in the run position.

[Log in to Reply]  [No Email]
Dave

04-22-2003 02:49:51




Report to Moderator
 Re: Farmall F-20 timing in reply to Andrew, 04-21-2003 14:40:31  
I had to hold a short stick against the flywheel surface while my buddy cranked to clean off the gunk so the DC mark could be seen. If you don't check for compresson or look under valve cover to see that both valves are closed you have a 50-50 chance on getting it right.Spark lever should be all the way up,spark retarded.Points just starting to open.You might have to fiddle with the coupling a hole at a time to get exactly what you want.Usally this method is dead on the first time.Good luck

[Log in to Reply]  [No Email]
Andrew

04-22-2003 05:03:04




Report to Moderator
 Re: Re: Farmall F-20 timing in reply to Dave, 04-22-2003 02:49:51  
What kind of mark am I looking for? is it just a line stamped in the flywheel?



[Log in to Reply]  [No Email]
Dave

04-23-2003 02:54:46




Report to Moderator
 Re: Re: Re: Farmall F-20 timing in reply to Andrew, 04-22-2003 05:03:04  
The flywheel should be stamped DC.If you look in the hole with a strong flashlite you should see a pointer about 9 o'clock position, this is what to line up the DC with.If you take all the spark plugs out and turn the hub on lower crank pulley with big set of channel lock pliers while watching in hole for the DC you can do it all by yourself.Knock the guts out of an old plug and adapt a whistle or put a long piece of plastic tubing into a jar of water to watch fof bubbles.A compression gauge is easiest if you have some help.Nobody ever seems to be around to help when I want to do this procedure. Good Luck!!

[Log in to Reply]  [No Email]
Andrew

04-21-2003 21:55:06




Report to Moderator
 Re: Farmall F-20 timing in reply to Andrew, 04-21-2003 14:40:31  
OK,
I found the port where the timing marks should show, and I set piston #1 at TDC but did not find any marks there, if I turn the engine backwards a bit I find what looks like a square mark and thats the only one I see. If I set the mag with this mark it's too advanced for the engine to run I rotated the coupling back 1 full hole and that is close, the engine runs and starts easy enough but it's still not quite right. Now that i've got it close I think I will be able to get it adjusted. Now the other question is, does the retard lever have to be up or down to advance timing? When it's up as far as it goes that engages the kill switch. Thanks for your help!

[Log in to Reply]  [No Email]
Ed-Ga.

04-21-2003 19:26:53




Report to Moderator
 Re: Farmall F-20 timing in reply to Andrew, 04-21-2003 14:40:31  
Another fact that makes it easier in finding DC on the flywheel is with number one piston at TDC compression the hand crank pin through the crankshaft will be horizontal.



[Log in to Reply]  [No Email]
Karl O

04-23-2003 16:21:57




Report to Moderator
 Re: Re: Farmall F-20 timing in reply to Ed-Ga., 04-21-2003 19:26:53  
On the F-4 magneto, up on the points cover lever retards the spark, and eventually grounds the points and stops the sparks.

If you've got 'er running, then moving the perforated discs one hole at a time is definitely the way to go to find best timing. I find that when I get the magneto advanced enough, with lever set to full advance, the engine gets a little 'lopey'; it surges just a little at idle. If it's too far retarded, it will run very smoothly, but accelerates VERY slowly.

[Log in to Reply]  [No Email]
Farmaller

04-21-2003 17:59:18




Report to Moderator
 Re: Farmall F-20 timing in reply to Andrew, 04-21-2003 14:40:31  
Hole in front of bellhousing on left side about size of a quarter timing mark is in there.



[Log in to Reply]  [No Email]
Goofy

04-21-2003 16:16:18




Report to Moderator
 Re: Farmall F-20 timing in reply to Andrew, 04-21-2003 14:40:31  
The best way I know to find TDC is to remove the first spark plug and cover the hole with your finger. turn the flywheel till you feel compression on your finger. The piston should be at TDC. Hope this helps.



[Log in to Reply]  [No Email]
F-Dean

04-22-2003 06:57:15




Report to Moderator
 Re: Re: Farmall F-20 timing in reply to Goofy, 04-21-2003 16:16:18  
My Dad used a piece of baling wire to determine TDC with the #1 plug out.



[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:


TRACTOR PARTS TRACTOR MANUALS
We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

Home  |  Forums


Copyright © 1997-2023 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters

Website Accessibility Policy