Generator throttle/ voltage question

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  #1  
Old 08-04-13, 10:28 AM
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Generator throttle/ voltage question

I bought a 10hp briggs and stratton coleman 5000 watt generator from. Friend for 100$ because his dad took it apart and couldnt figure out why it wouldnt run. They lost pieces to the carb so I bought a new carb on ebay. I installed the carb and it still wouldnt run. I found that the rocker arm nut backed itself out and the pushrod was loose not connected. I reassembled the rockers and it started on the first pull and runs great.

The problem is that the carburator throttle is connected to a spring and is 100% open all the time. This results in the motor racing at all times. Im not sure what controls the throttle on a generator but mine always races. It appears to be connected properly but Also looks like something is missing. The racing results in the voltage going to 150vac. I can manually spring back the throttle and get 115-120vac.

I need some eduation as to what regulates the throttle and voltage on a generator. I have attached some pictures of my throttle setup
 
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  #2  
Old 08-04-13, 10:34 PM
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Have you tried it with the spring connected to one of the holes toward the other end of the governor arm? Does the governor try at all to slow the engine down? I wonder if anyone has tampered with it and gotten it out of specs.
 
  #3  
Old 08-05-13, 11:41 AM
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Is the pinch bolt tight on the end of the linkage that wraps around the governor shaft sticking out of the engine? Does that linkage move at all in response to engine speed? My guess is it's not if your over-revving enough to get 150V.
You say you can push the linkage back & slow the engine down. When I was fiddling with mine I couldn't easily push back--the force from the internal governor was very strong.
 
  #4  
Old 08-05-13, 02:11 PM
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I have not tried using the other holes on the governor. I will try that. The pinch bolt is connected and I don't believe was tampered with. It does not slow down the engine. I'm not sure how to verify the governor works or is within spec. I can move the spring by hand and back off the throttle without much force at all. The pinch bolt moves with the throttle and is tight.
 
  #5  
Old 08-05-13, 07:22 PM
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Well if nobody chimes in that actually owns or has worked on a 10HP B&S generator then your next best bet without leaving home is to search Youtube videos for closeups of the linkage or tutorials on how to adjust the carb & governor.
After that you could go to a store that carries a similar model and take a real close look & see if the springs are in the right places & the linkage angle looks right.

On some B&S you adjust the governor by loosening the pinch bolt, hold the throttle wide open (the spring wants to hold it open anyways), take a pliers and rotate the governor shaft in the same direction (wide open) til it stops. Then tighten the bolt. This way any governor movement will be pulling the throttle off wide open.
 
  #6  
Old 08-05-13, 09:58 PM
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Looks like yours is missing a spring... Should be one on that sqaure holed tab... Thats how my briggs gen is... To adjust my rpms I bend that tab and it adjusts the governer..

But I have to look again... I have the manuals on my computer... Just need to find them as I have them tucked in the server somewhere....
 
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Old 08-05-13, 10:23 PM
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Lawrosa, I think you're right... I was trying to figure out what didn't look right about that picture. I don't have one here to compare it with.
 
  #8  
Old 08-06-13, 08:41 AM
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[HR][/HR]


Can you guys look and let me know? That would be great!
 
  #9  
Old 08-06-13, 09:14 AM
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If you get the series from the motor I can help fine the doc... Like here shows all the parts... I can take a pic of mine but may be a little different then yours... This will be the best option to figure if your missing something....

Wait I cant upload the PDF... Says too large.....

Try this and see what you get...

Engine


I will try to upload the repair manual I have for the L head... Shows all engines..
 
  #10  
Old 08-06-13, 06:41 PM
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Is it either one pf these numbers? They dont seem to work. Sorry if they are rotated my phone stinks
 
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  #11  
Old 08-06-13, 06:57 PM
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No its on the motor......Wrong spot I believe....Thats a S/N

I have the manual on my computer... Just can up load it...
 
  #12  
Old 08-06-13, 11:09 PM
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The numbers are stamped in the valve cover.
 
  #13  
Old 08-07-13, 01:04 PM
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Here's an illustration from the manual which appears to show a cable of some sort

 
  #14  
Old 08-07-13, 01:20 PM
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I see the cable in your first pic post #1...

The illustration is too small for my old eyes but its probably what I have... You see more then one spring????

I see two but only see one in the gen pic post #1
 
  #15  
Old 08-07-13, 05:59 PM
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There won't be the throttle cable on the generator... it's a fixed speed engine in this application.
 
  #16  
Old 08-07-13, 06:15 PM
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Amazing that nobody reading this thread has a 10HP B&S outside, or is familiar enough to comment...
 
  #17  
Old 08-07-13, 06:37 PM
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Well mines in the shed buried and I aint getting it out to look.... You have the wrong illustration maybe if theres a cable... In your pic I think that is the linkage to the internal part of the engine....
 
  #18  
Old 08-08-13, 05:46 PM
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Lawrosa,

If you can take some detailed photos of your B&S throttle / governor setup and post them in this thread, Id happily send you $10 via paypal!!
 
  #19  
Old 08-08-13, 07:04 PM
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Can't look up a diagram without the engine numbers.
 
  #20  
Old 08-08-13, 08:23 PM
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Lawrosa,

If you can take some detailed photos of your B&S throttle / governor setup and post them in this thread, Id happily send you $10 via paypal!!




Ha ha... Cant accept that... But if you post the #'s off the engine as cheese suggests we can help you...

You need to help us so we can help you...
 
  #21  
Old 08-09-13, 07:46 AM
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Maybe I'm missing something but what good is the motor number in this situation? That same motor cold be used in a variety of other applications--mostly with cable throttles instead of single speed like a generator. I think something more specific like the correct generator service manual or putting ones own eyes on a similar model in a store, pawn shop or repair shop.
 
  #22  
Old 08-09-13, 09:34 AM
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Model: 204412
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  #23  
Old 08-09-13, 09:54 AM
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See the spring in the back in this pic? That's what's missing on yours and why it's over revving.

guy48065, hard to look up anything about an engine when you don't know what engine it is. Not all engines are the same, and not all 10 briggs engines are the same either.
 
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  #24  
Old 08-09-13, 10:24 AM
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I circled it...............................




Name:  gen.jpg
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  #25  
Old 08-09-13, 12:34 PM
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Thank you everyone! Second thing I see if that there's a lever in that pic that I am missing! It's right below the circle. Does anyone know what that does?
 
  #26  
Old 08-09-13, 05:13 PM
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Don't these generators have a voltage regulator? You still need to fix the RPM so you get 60 Hz.
 
  #27  
Old 08-09-13, 08:20 PM
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Yours shouldn't have the lever, being a fixed throttle. I think on that one, you bend the tab on the right side of where your missing spring goes to raise/lower the rpm.
 
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