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Briggs and Stratton Model 6S Rebuild


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  #1  
Old 01-17-2013, 11:40:13 PM
Charliechaindrive Charliechaindrive is offline
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Default Briggs and Stratton Model 6S Rebuild

Hello everyone, I brought in my older briggs 6s into small gas engines recently and I've got a few questions. First off, how exactaly do you take the cam shaft out? And what is the timing settings for this? I'm hoping to put this all back together really nice. Thanks!


I don't know the serial number unfotunatly..
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  #2  
Old 01-18-2013, 12:17:38 AM
Bowtiebutler956 Bowtiebutler956 is offline
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Default Re: briggs and stratton model 6s rebuild

There is a shaft holding the cam in. From the side of the block you have pictured, I can see the little plug on the end of the shaft. Drive it out from the other side of the block with a punch or steel rod. The little plug will come out first, then the shaft. As far as timing goes, there is a dot on the cam that has to be lined up with a mark on the crankshaft when reassembling. There is no adjustment of ignition timing other than the points gap (dwell). If you would like any further illustrations, I could take a couple pics tomorrow, and post them. Let me know. The 6s is a great little engine, and I have a couple myself. I look forward to seeing your progress.

Matt
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  #3  
Old 01-18-2013, 06:43:45 PM
Charliechaindrive Charliechaindrive is offline
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Default Re: briggs and stratton model 6s rebuild

Thank you for the info matt, it helped a lot! I had the cam out today, and cleaned it. That about surmounts what I'm doing to the internals, so I'm going to now re assemble it a ways and I bought a can of high temp engine paint. I am planning on repainting it black, and getting a new briggs 4 cycle decall off ebay or somewhere.
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Old 01-18-2013, 08:55:16 PM
K-Tron K-Tron is offline
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Default Re: briggs and stratton model 6s rebuild

Surface preparation is a big part of the final paint finish.
I have had great success removing old paint with rock miracle, and small bristle brushes. Once the paint is removed, I clean the surface with gasoline soaked paper towels. Once the surface is clean enough that no marks or left behind, you can now prime the engine. I have used plastikote self etching primer, and then any choice of your high temperature rattle cans. Spray conservatively, and make a number of coats to get the coverage and finish you want. If you rush between coats you will have drip marks and surface wrinkling which kills the look of the finish product.

A friend of mine just told me that Napa can mix/match auto paint colors to what you have, add enamel hardeners to the paint and put in rattle cans for something like $14 a can. The enamel hardeners make a gasoline resistant finish. I am going to give it a try before I go to the expense of powder coating.

Chris
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  #5  
Old 01-18-2013, 09:01:23 PM
Charliechaindrive Charliechaindrive is offline
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Default Re: briggs and stratton model 6s rebuild

So that's where you get the color's put into rattlecans.. I've been wondering that fo a while now. Thanks for the tip! I will work on that next Tuesday when I returnto school.
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Old 01-22-2013, 03:33:42 PM
Andrew Mackey Andrew Mackey is online now
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Exclamation Re: briggs and stratton model 6s rebuild

If you have not already re-set the cam and crank - easy way to set up is to install tappets and cam. Drop in valves loose - no springs. Turn cam so that the cam is between the intake and exhaust stroke - both valves just closed. Then install crank, so that it is at TDC, with both valves closed. You should be good to go! When installing the button seal on the outside of the cam support shaft - put a little sealant on it, to prevent seepage. Remember - the backing plate gaskets thickness determines crankshaft end play! Too thin, the crank will bind, when the engine gets hot. Too loose, and the engine will wear the bearings and con rod - prematurely.
Andrew
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Old 01-22-2013, 09:17:09 PM
Restofire Restofire is offline
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Default Re: briggs and stratton model 6s rebuild

Good point Andrew, alot of people don't understand how the thickness of the gasket, increases or decreases the endplay. This is why when or if you find a set, it is a set of 3, usually .004, 009, 015 if memory serves me right, Don't skip this step after doing everything else right.
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Old 01-22-2013, 10:26:54 PM
Charliechaindrive Charliechaindrive is offline
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Default Re: briggs and stratton model 6s rebuild

I didn't plan on ordering new gaskets (I know, that's a bit dumb considering how much work I have into it otherwise) for just this reason. Good thing I didn't ruin any of the old gaskets, I've got them in a manila envelope

Wresteled the exhaust valve in today, that was a pain in the butt considering that our valve spring compressors in the shop are too new and too big to fit in the access place in the 6s. Other than that, I need to find a new gastank for this project, because the old one was rusted through.
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Old 01-22-2013, 11:19:09 PM
Bowtiebutler956 Bowtiebutler956 is offline
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Default Re: briggs and stratton model 6s rebuild

Quote:
Originally Posted by Charliechaindrive View Post
I didn't plan on ordering new gaskets (I know, that's a bit dumb considering how much work I have into it otherwise) for just this reason. Good thing I didn't ruin any of the old gaskets, I've got them in a manila envelope

Wresteled the exhaust valve in today, that was a pain in the butt considering that our valve spring compressors in the shop are too new and too big to fit in the access place in the 6s. Other than that, I need to find a new gastank for this project, because the old one was rusted through.
I have a couple extra 6s gas tanks laying around that are in good shape. I notice your base (oil pan) looks like it has an ear broke off. I might have an extra one of those as well. If I do, you can have the tank with a carb still on it, and the base for $20 plus whatever it cost to ship. Let me know if your interested.

Matt
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  #10  
Old 01-30-2013, 08:29:23 PM
Charliechaindrive Charliechaindrive is offline
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Default Re: briggs and stratton model 6s rebuild

Found the serial number plate,

_Type no: 701028 Serial: 90972

Any help on dating this little thing?
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  #11  
Old 01-30-2013, 09:14:05 PM
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bigGURN bigGURN is offline
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Default Re: briggs and stratton model 6s rebuild

Your engine was built May 1950
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Old 01-30-2013, 09:28:59 PM
Charliechaindrive Charliechaindrive is offline
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Default Re: briggs and stratton model 6s rebuild

Thanks gurn!!!
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Old 01-31-2013, 12:30:34 AM
Restofire Restofire is offline
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Default Re: briggs and stratton model 6s rebuild

Charlie, I see that bottle of red hot, if your making buffalo wings I might have to come bye and help with that 6S
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  #14  
Old 01-31-2013, 08:36:00 AM
Charliechaindrive Charliechaindrive is offline
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Default Re: briggs and stratton model 6s rebuild

Ha ha, shure thing resto
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Old 02-12-2015, 05:54:49 PM
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Default Re: briggs and stratton model 6s rebuild

Quote:
Originally Posted by bigGURN View Post
Your engine was built May 1950
I have 2 questions...one is can you date 6s...701028...27310?
and second, I need a new jet and nut for the carb...I'm having difficulty narrowing down a part number to try to order. Any help out there?
Thanks
Kevin

PS...this engine is on my son's toro reel mower that he takes to shows and mows grass, dirt, leaves or whatever kind of surface is there!
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www.snowcreekmills.com
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  #16  
Old 02-13-2015, 10:39:14 AM
doublee22 doublee22 is offline
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Default Re: briggs and stratton model 6s rebuild

asecc website shows serial #27310 was manufactured in 1949. they also have a pdf downloadable
parts list for 6S (and lots of others).
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Old 02-04-2018, 03:40:55 AM
Axenolith Axenolith is offline
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Default Re: briggs and stratton model 6s rebuild

On the 6S topic, someone posted an old shop chart that had torque specs for the older Briggs and I've been looking all over and haven't stumbled back over it. Anyone recall that, or hhave a shot they could post?

Barring that, what are torque for the 6S connecting rod and head?

Thanks beforehand :-)
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Old 02-04-2018, 01:11:16 PM
mschreiber mschreiber is offline
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Default Re: Briggs and Stratton Model 6S Rebuild

i use sae chart for grade, size and thread of bolt. i don't believe anything special other thats on chart.

http://ratelco.com/Z2VuZXJhbC10b3JxdWUtY2hhcnQ/
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Old 02-05-2018, 02:37:34 AM
Axenolith Axenolith is offline
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Default Re: Briggs and Stratton Model 6S Rebuild

Oh, thanks. I was looking for the B&S shop chart someone posted. There's all sorts of stuff from post 70's or so but searching for this stuff always returns a ton of junk, I might have to go with that.
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