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Bit of a quandary here


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#1 Phluphy OFFLINE  

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Posted July 13, 2015 - 11:38 PM

I've decided the loping problem is going to remain as long as I keep taking shortcuts, adjusting idle, etc., and am going to do a carb rebuild.

However, B&S refers to a carb mounted fuel pump and mine is mounted on the firewall, or whatever the tin is between engine and battery area.

This is for engine model 422437 type 1209.

Manual calls for a #491539 overhaul kit.

Is the kit going to have the parts for fuel pump and all or separate issues?

I did receive a response from another member who also had a photo of a carb similar to mine.

I'm thrown by the pump location not being on the carb.

Also my carb is the one with the idle mixture adjust screw and fixed main jet.



#2 wvbuzzmaster OFFLINE  

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Posted July 14, 2015 - 12:05 AM

I can help you to solve your carb quandary. I had the same thing on my Briggs 18 Hp on 1988 Craftsman, and finally eliminated the issue 100 percent with an engine swap lol. But on to your issue. Don't worry about the fuel pump location, buy the lesser evil of the kits, and go thru the carb as you would without the fuel pump. I can't remember what size wrench fits the bolts that thread up from the bottom of the manifold into the carburetor. But you will need to sacrifice a combination box end wrench for it. Grind the box end down on the outside curve into a tapper because that is the only way you will break the bolts loose (and tighten them). I can take a picture of the wrench I modified for this when I get a chance.
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#3 Bolens 1000 OFFLINE  

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Posted July 14, 2015 - 06:43 AM

Can you provide a picture of your carb?

I want to be sure you have the right carb on there. Does your fuel pump look like the ones attached to the carbs or is it different?


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#4 larrybl OFFLINE  

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Posted July 14, 2015 - 07:59 AM

Either carb will work on this engine. Mine orginally had the firewall mounted pump, I changed carbs to the one that has the pump mounted on the carb. That is why I have both types.


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#5 Bolens 1000 OFFLINE  

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Posted July 14, 2015 - 08:14 AM

I did some searching and none of the kits come without the pump kits,

Here's a link to the kit I stock so you can see what's in it , they are not too bad priced so you can just save the pump parts for the future

 

https://bolenspartsa...l-head-engines/


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#6 Phluphy OFFLINE  

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Posted July 14, 2015 - 10:21 AM

Can you provide a picture of your carb?

I want to be sure you have the right carb on there. Does your fuel pump look like the ones attached to the carbs or is it different?

Yes, I will take a photo today and, unless I'm, again, overlooking something, I don't see the pump on carb mounted versions.

Posting the photo in a few.



#7 glgrumpy OFFLINE  

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Posted July 14, 2015 - 11:57 AM

Not sure what you have, BUT most newer Briggs just have a plastic pump that mounts on tin or anywhere really and runs off the vacumm line from the engine for power. I have used those on older Massey and W-Horse engines with pumps that were built on the carb, and no longer had kits for those. These were older than yours tho and singles. Those vacumm pumps work on anything you can get a pulse vac from and mount anywhere. About $25 or less for one's I've bought. If you have a Nikke brand carb on this engine, it might have Jet kits in diff sizes to adjust mixture, instead of needle. Have to buy the right bore size for your specific engine or tractor.  I had that experience on a two-barrel carb once, maybe that does not apply to a single bore? 


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#8 Phluphy OFFLINE  

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Posted July 14, 2015 - 02:10 PM

My bad.  Lesson learned: do not rely on memory.

Turns out my carb is not similar to the one in the photo, and, apparently at one time it did have a fuel pump mounted on it.

To clarify a bit, and btw I found the engine ID info, included in the 3 photos.

Thanks to all for your help.Engine ID.jpg Back of carb.jpg Fuel pump and back of carb.jpg



#9 wvbuzzmaster OFFLINE  

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Posted July 14, 2015 - 09:42 PM

Ive seen enough of those Briggs opposed sporting a "gutted" carb mounted fuel pump to believe it to be normal setup.

Edited by wvbuzzmaster, July 14, 2015 - 09:43 PM.

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#10 larrybl OFFLINE  

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Posted July 14, 2015 - 10:01 PM

Ok I wasn't going to do this .... but Here is Hulk !! spare engine. It has the carb without the pump installed. When I swap engines I swap carbs. I don't have a good external pulse pump. I can sell this one if you are interested. PM me

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#11 wvbuzzmaster OFFLINE  

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Posted July 15, 2015 - 12:08 AM

Ok I wasn't going to do this .... but Here is Hulk !! spare engine. It has the carb without the pump installed. When I swap engines I swap carbs. I don't have a good external pulse pump. I can sell this one if you are interested. PM me


I have a parts Briggs opposed engine, so.... If a carb is needed.... Don't part the hulks engine.
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#12 larrybl OFFLINE  

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Posted July 15, 2015 - 08:15 AM

This is the carb on Hulk's spare engine, and the next time I swap engines I planed to replace this carb with one that has the pump attached.


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#13 glgrumpy OFFLINE  

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Posted July 15, 2015 - 10:33 AM

That pump in your pictures mounted on the firewall IS the one I was talking about. Used on lots of the newer things now days. What's wrong with that? Works! I like you can keep it mounted many places and out of way of doing other things around engine when needed.


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#14 Phluphy OFFLINE  

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Posted July 15, 2015 - 11:54 AM

Figures.  After taking the photos, the thing fired up, minimal choke, purred all day barely above idle, moved logs in 3rd low no problem, it definitely has more ability than the old Murray LT.

Other than the transaxle, which is toast, anyone around Citrus-Marion-Levy county have a use for Murray 11/36?

Thanks to all for your patience and assistance.  Thinking new plugs, fuel and air filters may be the ticket for this B&S... unless the loping returns :mad2:.


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