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My Briggs and Stratton engine


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#1 Bolens 1000 ONLINE  

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Posted December 30, 2010 - 06:28 PM

Well, for the past few weeks I really haven't done anything with My Garden tractors or outdoor power equipment so today I decided to fool around with this little Briggs and stratton engine that was laying around for years. It was stored in a box with the carb in pieces in another box. A few years ago I tried to get it going but it had very weak spark and would not fire. I knew I would probably have to clean the points behind the flywheel so that's why I put off doing it for so long. Well today I finally decided to dig in!

Here are the first set of pics of what it looked like when I took it out of the box:
briggs engine 004.jpg

I then proceeded to remove the flywheel and the points cover...

briggs engine 023.jpg

The points were dirty as I suspected and I cleaned/gapped them the best I could then put the cover and flywheel back on. I gave the flywheel a quick spin by hand and "snap" a bright blue spark was made. I knew then that I had a good chance at getting her running. Now to tackle the carb....
I inspected the carb and found the float was bent and dented and it had a pretty good coating of dust inside the carb. Upon further review the carb was in pretty rough shape and would need some attention. I thought I would just give up and call it a day when I remembered I had a few parts buckets laying around. I said what the heck and went looking in the parts pile. To my surprise I had found a complete duplicate carb and air cleaner! :dancingbanana:
I cleaned it up and assembled it to the engine. You can see the blue parts are from the original engine and the red are from the parts bucket.

briggs engine 028.jpg

All I had to do now was put some gas in and see what happens....

The rest of the story is coming later tonight.... :D

Attached Thumbnails

  • briggs engine 010.jpg
  • briggs engine 008.jpg
  • briggs engine 007.jpg
  • briggs engine 009.jpg
  • briggs engine 018.jpg
  • briggs engine 020.jpg
  • briggs engine 029.jpg
  • briggs engine 027.jpg


#2 olcowhand OFFLINE  

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Posted December 30, 2010 - 06:30 PM

Glad you got some shop time in. Great therapy!

#3 Bolens 1000 ONLINE  

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Posted December 30, 2010 - 07:43 PM

Ok, so continuing on with the story I could not find the tank so I used a little squirt bottle to fill the carb up. I wound the rope and gave it a pull and off it went !!!! :dancingbanana:

The video shows part 1 with no air cleaner and no muffler, then the second part shows the muffler along with the air cleaner added. I let the engine run until the gas ran out of the carb. She was running a little fast but after the video I got it adjusted.
The engine was jumping around a bit because I did a fast bolt down job to a pallet just enough to hold the engine in place. Actually I just put a few nails around the engine LOL



#4 Bolens 1000 ONLINE  

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Posted December 30, 2010 - 07:44 PM

Now here come the questions...

What year is it?
What HP is it?

Here are the #'s

Model 8B
Type No. 905151
Serial No. 571121

#5 MH81 ONLINE  

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Posted December 30, 2010 - 08:23 PM

I found this. Model 8B, 8B-FB, 8B-R6 Operators Manual

Also found this page on David Bradley that shows it as a 2.75 Hp. http://www.oocities....ostwartractors/

Edited by MH81, December 30, 2010 - 09:07 PM.

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#6 Bolens 1000 ONLINE  

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Posted December 30, 2010 - 08:50 PM

Thanks MH81!

The links worked for me.

#7 powerking56 OFFLINE  

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Posted December 31, 2010 - 07:03 AM

Nice little Briggs!!! Tough to get an exact mfg date on the early number series Briggs, I'd say very late 50's early 60's looking at the shoroud, flywheel may have mfg date on the back which should put you close. The piece that got me started in this madness was the little brother to yours a 6bs from my father in law. Amazing what clean points and a little carb clean out will do!!!! AND the shop time is GREAT!!
P.
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#8 mjodrey OFFLINE  

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Posted December 31, 2010 - 07:34 AM

I would say it is probably from the early '60s. I have one that looks just like that,which is a 1961.As Peter said,the shroud looks to be from that time period.
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#9 Gtractor ONLINE  

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Posted December 31, 2010 - 09:30 AM

Brian, your model 8 was built in Feburary of 1955.

I forgot the power rating:

2.5 horsepower

Edited by Gtractor, December 31, 2010 - 09:40 AM.
I have A.D.D.

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#10 Bolens 1000 ONLINE  

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Posted December 31, 2010 - 04:34 PM

Thanks for the info :dancingbanana:

I kind of had a feeling it had to be from the 50's because I know the recoil start came around somewhere in the early 60's

#11 DougT ONLINE  

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Posted December 31, 2010 - 08:31 PM

The Briggs manufacturing dates can be found here: www.asecc.com
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#12 Bolens 1000 ONLINE  

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Posted January 02, 2011 - 08:00 PM

Forgot to show you guys the homemade spark plug tester :D

Attached Thumbnails

  • briggs engine 001.jpg


#13 jhn9840 OFFLINE  

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Posted January 24, 2011 - 05:23 PM

Thanks for the great write up. Love to watch that old iron run.

jhn9840
John

#14 RailmanB110 OFFLINE  

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Posted January 25, 2011 - 11:40 PM

I remember mesin with quit a few of those old Briggs. Most were probably older than the one you've shown.
Your plug tester is what I use to power my spud gun, along with a long reach gold paladium left over from my glory MX years. Just drilled a hole, & threaded the plug in.

As far as testing for spark, my older brother always had me do the honors. It was either that, or I didn't get to ride the go cart or mini bike.
It's kinda odd how you can get used to something like that! Today, no way!
Joe




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