Jump to content

Unofficial Home of Old Simplicity & Allis-Chalmers Garden Tractors

Sign in to follow this  

Just an update on my Agco/Sunstar Repair

Recommended Posts

Stopped and talked to the Service Manager and mechanic this morning about the engine problem they feel the head is the major problem of the bent pushrod. Mechanic took the bent rod and straightened it and put it back in and turned the engine over and it was bent again. My guess is the head overheated and warped?? We try and keep it clean but it must have gotten hot mowing the last time. In my estimation this was not a well designed tractor. Engine has to come out to work on the problem. New head and needed parts and gasket will run $350-400 and labor would be $300-500 depending the problems getting it out and putting it back in. I need to let them know Monday if I want to fix it. Not sure I want to mess around and part it out. 48" deck and two-stage blower. Has power steering and the high-low range. Good snowblowing unit. Would I be wrong in parting or sell the unit as is if I don't fix it? Thanks.:(!:(!

Share this post

Link to post
Share on other sites
A bent pushrod on those engines cannot be straightened and then put back in and work,it'll bend again.They need to put in a new push rod any 'mechanic' that works on these engines should know that.

Share this post

Link to post
Share on other sites
Is the valve and/or rocker arm for that pushrod free? That is will it move as far as the other valve on that head? Having been inside a Command, it would take a LOT of heat to warp a head that much and it would seem likely to have impacted BOTH valves and there would be other, pretty obvious, damage as well. It may be something as simple as a bad pushrod. I agree with trying a new pushrod. Might be a pretty cheap fix. Not a big job to take out the engine of a Sunstar. Most of the $$ for that job are a new head, valves, etc at retail price. Lots of used Command heads on eBay for reasonable $$.

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)

    • MARK (LI)
    • MRR
    • TTDE419
    • midnightpumpkin
  • Today's Birthdays

    1. sandyhillbill
      (81 years old)
  • Recent Status Updates

    • dav-1

      dav-1  »  Talntedmrgreen

        Over a year ago, you answered a question I had about the tool bar for my FDT. In your reply dated Dec 31, 2019  you said the spacer, part #16, goes in the bar to allow for up and down depth adjustment. does this mean the bolt has to be tightened at whatever depth desired or does the bolt slide up and down, allowing the lower hitch to free float?
         If it is tightened so the lower hitch and the bar are rigid, then is the depth to be controlled by the shoes? Or by the lift handle?
        Is there any kind of user directions for the tool bar? The Outdoor Power Manual basically shows how to assemble the bar but not how to use it
      · 1 reply
    • tribswede

      tribswede  »  goatfarmer

      ISO a deck for a 6516 H and all the connecting hardware any ideas on where to start?
      · 1 reply
  • Adverts