Jump to content

Unofficial Home of Old Simplicity & Allis-Chalmers Garden Tractors

Sign in to follow this  


Recommended Posts


Hey guys...I've been trying to get the old AC720 back on the road, but am having trouble.

By the way...thanks for all the good advice you all have given me.  I would have liked to reply to each of you individually, but do not see an option to do that.  If there is one, will someone please tell me how to do that?

I tried to adjust the points yesterday with no luck...here's what I did.  Where did I go wrong?

I rotated the engine until I got to the spot in the picture.  I'm assuming that little mark means I'm on top dead center.  Then I loosened all the screws on the points, including the one where the condenser connects.  Then I pushed the points open and put a .020 feeler gauge in them and then tightened all the screws.  When I pulled the feeler gauge out, the points snapped shut.

What am I doing wrong?  How do I get the points set to .020?  Also I don't see any other marks on the flywheel, so I don't know how I'm going to set the timing.  I think it's supposed to be set on 24 degrees before top dead center.

Hope you guys can get me straightened out.



Timing mark.jpg

Share this post

Link to post
Share on other sites

Chuck been a while but just looking at you picture believe your on the wrong mark, believe it's the long mark at top of your picture

I'm thinking I rolled mine past the mark so pushrod for points is down and set them there, at that point they will be closed and when they open should be rite.  These pushrods tend to wear over the years so it may not be opening points far enough.



Edited by 720nut
  • Like 2

Share this post

Link to post
Share on other sites

Right, turn engine until points open to the fullest and if you turn it further they will start to close. That's where you set them. TDC doesn't matter but the point where the points are open the furthest does.

  • Like 1

Share this post

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

Sign in to follow this  

  • Who's Online (See full list)

    • RenegadeJ
    • PhanDad
    • gwiseman
    • OrangeTracFan
    • Skelsey1989
    • CarlH
  • Today's Birthdays

    1. Dave-Saratoga
      (67 years old)
    2. FlashandFlare
      (47 years old)
  • Recent Status Updates

    • SonOfCreepfeed


      Thinkin' about this old girl.

      · 1 reply
    • Dean McFadden

      Dean McFadden

      Good morning peeps! I’m always searching for helpful information with my AC collection. Hope to find out new information and pass on my own experience in restoration. Here are some pics of my babies. I’m still looking for front rims for the 410 so yesterday I put the 310 wheels on took it for a drive. Working pretty good but still needs some carb work. Gotta get the 310 running next. Have a great day!😁

      · 1 reply
  • Adverts