Jump to content

Unofficial Home of Old Simplicity & Allis-Chalmers Garden Tractors

Sign in to follow this  
sb64

Running Irratic

Recommended Posts

sb64

I'm having troubles with my 728. When it idles, it sounds perfect. However, when i throttle it up, it will sometimes backfire, or run rough. I have already tried carburetor adjustments, and no matter whjat i do, it doesn't make a difference. I'm thinking it's either the breaker point gap is off, or the coil is going bad.

P.S. if anyone knows the breaker point gap for an 8hp vertical please let me know I'v gotten three different answer online.

Thanks

Share this post


Link to post
Share on other sites
BLT

First of all try a different spark plug. They are electrical and also fail at time to time. I was just given a fairly decent JD 826 snowblower that PO said (Same symptoms) was junk and take it away. I putzed with for ten minutes and thought maybe a spark plug. wah La!!

Excellent runner and now on my for sale list.

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)

    • SmilinSam
    • BenB
    • tg french
    • midnightpumpkin
  • Today's Birthdays

    No users celebrating today
  • Recent Status Updates

    • Paul M.Murphy

      Paul M.Murphy

      Hello glad I got on this site. I hope to upload a couple of photos of my Simplicity Broadmoor 
      Model 707 Tractor. I have replaced all the belts on it and installed a new ignition switch.
      Have a mower deck which was in poor shape , repaced a couple of bushings and welded the
      deck where there was some holes. The tractor and mower deck came from a friend and the 
      mower deck metal was getting pretty thin. Some new metal was put in it and we also undercoated the underside of the deck. This was done by my friend Greg Toulman.
      I have not put the mower deck on the tractor yet, waiting for Greg to come home and give me a hand. Can you please tell me if there is a manual for the mower deck and where I could get one.
      I would also like to get some moon wheel discs as well.
      I will try and down load some photos of the tractor when my wife shows me how to. 
      I really love driving this tractor and also how well it is made compare today's tractors, especially the flexible rear end and the rollers.
      Tell the next time 
      Paul
       
      · 8 replies
    • jbrooks

      jbrooks  »  Talntedmrgreen

      Josh
       
      folowing  this from a link at the downloads.  I just rescued an AC 920 with the lambodini diesel. I can' t download  yet .  Where did you find the PDF copy you posted. . I would like to figure out how to adjust the injection pump. 
      I assume it's a bosche, correct
      · 0 replies
  • Adverts

×