Jump to content
Gadget

520H 1996 Onan 220 Governor Adjustments RPM

Recommended Posts

Gadget

This is a question in two parts

 

Part 1: What is the recommended RPM for operation of the Onan 220? I know that sounds obvious, to many of you but not to me, and I know it depends upon what attachment you are using and what the load is.

Here's where I'm at: Throttle all the way up, I max out at about 3200, then it creeps back to around 3000. almost all I do is mow with th 48" deck, Seems that a higher RPM will give a cleaner cut, when I really push the throttle up, and hold it in position I can get it to about 3500 but I have to keep my hand on it or it will creep back. I fiddled a little with the linkage and then I stopped thinking that the governor needed to be properly set. 

Part 2: I am not lazy, I did a search on this and couldn't get the answer, If it is already posted somewhere, just say so. One of the things I like about you guys is that you don't pounce on us for asking questions that may have been answered somewhere else already. I belong to an auto motive form and those guys are ruthless, you are not. Back to the question. I can find and have downloaded just about every manual I can find that applies to this machine and I cannot a "Repair" manual for the tractor. I can find service manuals but nothing that is step by step repair like a shop manual would. I am missing something?

Part 3: Lacking anything else, can someone at least tell me if I need to make adjustments to the governor and if so tell me how I can find out how to do it?

 

I thought I had CLEANED and degunked everything until I started reading more closely the posts and photos about chaff building up behind the flywheel and blocking airflow to the rear cylinder. Even though I could do a visual with a flashlight and it looked clean, I though I better check anyway. I took the "tin" off and everything was surprisingly clean so I decided not to push my luck and bolted it back together. At least now I know its moving air as it should. Thanks for the info on that.

 

I have attacked a picture or two of that process and a (not so good) view of the throttle governor linkages.

 

Thanks!

IMAG0704.jpg

IMAG0714.jpg

IMAG0713.jpg

Share this post


Link to post
Share on other sites
 
WNYPCRepair

If you do a search for "throttle rivet" here, you will find a ton of posts on it, here is one. I would check this first.
 

 

  • Like 1

Share this post


Link to post
Share on other sites
 
Dale520H

I've got the same problem with mine, I'm going after it today after breakfast and the treadmill.

Share this post


Link to post
Share on other sites
 
wallfish

Download this document and click on "specifications" pg2-1   RPM should be set at 3600

Probably not a governor issue but like the others posted, most likely a problem the throttle lever having enough friction to hold tension against the governor spring.

 

  • Like 2

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

  • Similar Content

    • trava.s
      By trava.s
      just wondering if anyone knows which way the governer is supposed to turn when setting it. its a 1984 gt 1100 workhorse/ wheel horse? it has a horizontal 11 horse b&s 399cc.I'd rather not have to drain the oil again and open the engine up. just trying to get it running smooth and then maybe restore it. its in good shape. i may have put in more work than needed. its ran before not very long and i recently tried firing it up and was screamin at 5000rpm i would assume. 

    • jmack
      By jmack
      I became a little curious when researching the PTO RPMs of older Wheel Horse, John Deere and Cub Cadets.  I read that "Woods Equipment" fabricated the Wheel Horse D finishing mowers back in the 70's and maybe the 80's and these mowers were belt driven, and I'm guessing had large pulley that appeared to reduce the 2000 RPM to a more manageable/safe speed.  
       
      Mike Duwe from other forum (weekendfreedommachines.com) discovered that John Deere and Cub Cadet also had REAR PTOs with 2000 RPMs similar to the D Series Wheel Horses.  Because of this, is it possible the John Deere 260 Finishing Mower and the Cub Cadet L42 Model 349 would fit the D Series Wheel Horse?  I'm not sure of the rotation direction, spline and diameter differences between Wheel Horse and John Deere are, but this would make finding a D Series finishing mower slightly easier.  
       
      Woods

      Wheel Horse
      John Deere
      Cub Cadet
        Citations:
      http://www.weekendfreedommachines.com/discus/messages/335/232953.html?1205075077
       
      http://www.woodsequipment.com/default.aspx
       
      Other Links:
      http://www.weekendfreedommachines.com/discus/messages/335/139036.html
×
×
  • Create New...