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Onan 20hp


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#1 Tankman OFFLINE  

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Posted January 27, 2013 - 09:51 AM

Just started to renovate a '90 520-8 Stallion. Lucky to find one!

Two questions 'bout the Onan. 1st is simple.

1) The grommet around the oil filter is kaput. Is this a necessity (to have)?
2) Was told the engine runs. I did crank the engine manually using the flywheel bolt just to lubricate the engine. Oil level is fine. Is there a way to bypass the electrical system, start and run without using the key or the WH 'lectric system?
 



#2 olcowhand OFFLINE  

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Posted January 27, 2013 - 11:19 AM

The grommet helps seal cooling air, but it's not gonna overheat if it isn't there.  In REAL hot weather it would be better to have it.

  As to bypassing, you can simply run a wire from + battery post to the coil for the ignition.   Then you could pull the wire from the starter terminal (S) on the key switch, and touch this momentarily to the + battery terminal to engage the starter.  To kill it, simply remove power from the coil.

 I'm assuming it has key switch or wiring issues?


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#3 olcowhand OFFLINE  

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Posted January 27, 2013 - 11:23 AM

To add....if touching the "S" wire to the battery doesn't engage the starter, then you may have either starter issues, or safety switch issues.  So then you'd need to find the engagement wire directly going to the starter solenoid, and connect it to the + battery terminal.  This will bypass the safety switches.  Be ABSOLUTELY sure the tractor is NOT in gear when doing this.  This is just to test & I never recommend bypassing things in order to actually use, but rather to help find where issues are.


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#4 Tankman OFFLINE  

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Posted January 27, 2013 - 11:26 AM

Thanks olcowhand! Ordered a grommet from Parts Tree.

http://www.partstree...-89R10042-00020

 

I'm goin' to try the bypass to start the engine sometime this week. Thank You again.



#5 8tyman8 OFFLINE  

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Posted January 27, 2013 - 03:07 PM

The nice thing with Wh is they are Still in business ! under Toro so you can get parts over the Counter ! i would look at

Joe's Outdoor Power

as he is a site sponsor i think he has some 520 h parts and you might just be able to get a ignition switch Do you have the Key ?



#6 Tankman OFFLINE  

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Posted January 27, 2013 - 06:30 PM

8tyman8:  I have purchased in the past from Joe's. Nice people workin' with Joe, always a pleasure.

 

A key, I have lots of them. I pick 'em up at the junque yard when I visit there. My grandson and I take a ride over to the junk yard to peek-a-boo at lawn and garden tractors. He has about a hundred or thousand of junked riders just sittin' around. I let the grandson carry a small tool bag.

 

A visit the grandson loves!  :thumbs:


Edited by Tankman, January 27, 2013 - 06:31 PM.





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