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Carb and points cover? Onan


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#1 glgrumpy OFFLINE  

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Posted May 27, 2016 - 11:11 PM

OK, got the gaskets for the intake and carb. Now, broke off the throttle cam and the shaft is in there very hard, may have to drill it out to remove from carb. SO, now might need that shaft and plate, or maybe a whole carb body. This is a DD carb on an Onan. Also the points and condesor on order, but I have no cover for that area and no idea what is supposed to hold it on??? Probly a gasket needed too?  Don't see any holes in block or base to have screws for it. How does one go on?  I will need those parts too. Think PO ran it long time w/out a cover, looking at all the gunk around the orig points.  Still trying to figure out why no key start/crank to it. I can crank all day crossing the selinoid, yet no key power. I will next be removing wires and cleaning ends of connectors and some gauge testing to see if all is correct. Bought a generic switch, witch fits, will have to see if right connects for it. I see in the manual a test to make sure switch closes which circuits and be trying to figure that out. BUT, I don't get any action crossing the terminals on the connector off the switch. I DO have the hour meter running with switch on, and power to the lights wire. That is only thing I know at this time. The darn selinoid and wiring to it all is buried under the battery box supports, think will be pulling it out to see better. What a pain to work on there. I have now also removed the after-market coil they cobbled on it, and have orig Onan coil hooked up, will see if that works when get more done.


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#2 glgrumpy OFFLINE  

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Posted May 27, 2016 - 11:46 PM

Looked here at manuals. Points box diff in it, till I reached an Option 2 page and shows a single screw cover. I now get what it is supposed to have, a gasket needed also. Needs allen bolts to hold down points, mine has big headed phillips that would be in way of cover, so need to get some of those for sure. Shows throttle shaft and "fly" as the call the shutter in it.

 

#3  142-0534 throttle shaft

#7  Fly, throttle spec F My spec ends with F   3283F if that is what is meant?

#9  Screw, fly to throttle shaft (need 2) 142-0334    Not sure if important to get these, can get at hardware? or special locking type? Haven't gotten mine out yet to see if peened or whatever to remove.

 

#1  Box Assembly, Breaker w/gasket  16D-1210

 

Not sure if anyone goes by these part numbers anymore or whom to contact, but this is what I have found so far is needed.



#3 ClassicBolens ONLINE  

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Posted May 27, 2016 - 11:55 PM

You have the newer style Onan igntion breaker box. The points cover part # is 160-1176 or you can also use 160-1285. The points cover is available under either number, both are expensive. It looks like the part # 812-0108 points cover screw is NLA, but the size should be 10-24 x 1.5". 

Onan Ignition.jpg

 

The breaker box hold down screws part # 802-0034 are 1/4-20 x 3/4" socket head (allen head) screws.

 

The carb butterfly screws 142-0334 are also NLA. Nothing really special about them. There are some listed on eBay currently, but you should be able to match them up locally, possibly Briggs or Kohler even?

 

It appears the 142-0534 throttle shaft is also NLA. I don't have any other info on this so hopefully someone with more info will chime in.

 

As for your ignition switch / solenoid issues. Your tractor would have safety switches at the brake pedal and the seat switch. Both have to be depressed before the engine will crank over. Also the PTO switch has to be in the off position. Sometimes you get lucky and its the simple things that cause us issues. 


Edited by ClassicBolens, May 28, 2016 - 12:16 AM.

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#4 classic OFFLINE  

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Posted May 28, 2016 - 10:01 AM

Here's a link to where you can get a throttle shaft GL.

http://m.ebay.com/it...5486?nav=SEARCH
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#5 glgrumpy OFFLINE  

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Posted May 29, 2016 - 10:05 AM

I am not finding a switch for the brake pedal by looking around. Looked at all the linkages under/inside frame, and no wires hanging free that I notice. Have to see if mentioned in the manual. 



#6 dropped82 OFFLINE  

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Posted May 29, 2016 - 10:01 PM

Sent you a PM

Eric

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#7 toppop52 OFFLINE  

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Posted May 30, 2016 - 10:04 AM

I made a points cover for my Onan from sheet metal, new was only available as a complete box with points and condenser for like $250.



#8 Toolfoole OFFLINE  

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Posted May 30, 2016 - 10:46 AM

Not sure if these are the correct ignition boxes, but they sure look the same. There are a few used ones on eBay.

 

Check 'em out:

Sears SS16 Garden Tractor Onan 16 HP OEM ~ ENGINE POINTS BOX ~ VIDEO

$27.95 (Buy It Now) OBO

http://www.ebay.com/...MAAOSwwpdW9Wcp 

 

ONAN b48 B43G T260G engine points ignition box free shipping

$34.99 (Buy It Now) OBO

http://www.ebay.com/...0EAAOSwfZhXMn2k

 

JOHN DEERE 316 318 420 onan B43E B43G B48G engine points box free shipping

$49.99 (Buy It Now) OBO

http://www.ebay.com/...D8AAOSw2x1XK4ld


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#9 ClassicBolens ONLINE  

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Posted May 30, 2016 - 10:56 AM

Not sure if these are the correct ignition boxes, but they sure look the same. There are a few used ones on eBay.

Check 'em out:
Sears SS16 Garden Tractor Onan 16 HP OEM ~ ENGINE POINTS BOX ~ VIDEO
$27.95 (Buy It Now) OBO
http://www.ebay.com/...MAAOSwwpdW9Wcp

ONAN b48 B43G T260G engine points ignition box free shipping
$34.99 (Buy It Now) OBO
http://www.ebay.com/...0EAAOSwfZhXMn2k

JOHN DEERE 316 318 420 onan B43E B43G B48G engine points box free shipping
$49.99 (Buy It Now) OBO
http://www.ebay.com/...D8AAOSw2x1XK4ld


Yes, any one of those would work. And well worth it. Onan wants over $50 for just the cover.
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#10 toppop52 OFFLINE  

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Posted May 30, 2016 - 08:19 PM

Mine looks like this, fabbing one from sheet metal was a breeze.


image.jpeg

image.jpeg

#11 glgrumpy OFFLINE  

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Posted May 30, 2016 - 09:26 PM

Top, this one is over whole points setting on top of engine with NO box around other than the cover. Shows Opt. 2 in the manuals, a later way they did them. SO, now have stuff coming from Boomber's, had big long talk and ordered some things, including a whole carb to start over with hopefully.  We talked coil too and other things like the fuel pump type and I got lots of info and tricks now.  SO, I'm good on this end for these items it seems, Thanks for all the links and pictures.


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#12 KennyP ONLINE  

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Posted May 31, 2016 - 08:17 AM

I think your cover is like the one in this pic.

Image009.jpg


#13 toppop52 OFFLINE  

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Posted May 31, 2016 - 08:37 AM

You going back with a DD Marvel Schebler, or doing the conversion? I almost did the conversion on my MF 1855, Boomer has the stuff priced right. But I found brand new DD's at ASAP in PA for $239. I think they're around $289 now.



#14 dropped82 OFFLINE  

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Posted June 08, 2016 - 07:55 PM

Someone school me on this conversion. I've actually considered it on my 1655.

Eric

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