1990? B&S lawnmower revving up and down


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Old 04-20-12, 11:51 AM
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1990? B&S lawnmower revving up and down

Hi
I know this is a common issue, from glancing around the web. I tried removing the whaddayacallit float cup, to let out possible water; no change. Saw suggestions for changing out the diaphragm, but have not turned up any videos for this configuration engine

B&S
model 096722
type 0216-01
date 900305 (1990, really?)

The tank is above the carb, which is sort of behind the air filter.
I'm fairly handy but have this bugaboo about internal combustion engines, like they are too arcane for me.

Can you tell me in detail, or direct me to somewhere where it's already dealt with, how to get the carb out if I need to, take it apart, WHAT's the diaphragm, anything else to look over and clean and how and with what....getting the idea?

And is this actually the next thing to try?

I can take some pix if that is helpful.

Thanks for your inevitable patience.

flatcat47
 
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Old 04-20-12, 06:02 PM
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Hello flatcat47,

Here's detailed instructions on carb cleaning, They should get you back up and running.

Scroll to the bottom for instructions on carb removal.....

Disassembly, Cleaning and Repair of Briggs and Stratton / Walbro LMS Carb on Briggs Engine 125K02 0137


Good Luck
 
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Old 04-20-12, 07:53 PM
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Okay, thanks. That will give me somewhere to start. Page one first and see if that helps.

Here's a Briggs and Stratton page with even more detail and pix
Overhauling the Carburetor | Frequently Asked Questions | Customer Support | Briggs & Stratton

None of these seem to deal with any diaphragm, though, for what that is worth.

OK, guess I get a couple more tools, always fun, and clear off my workbench, always worthwhile, and see what's inside a carb.

I'll report results.
 
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Old 04-21-12, 04:52 AM
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None of these seem to deal with any diaphragm

That's likely because your carb/engine doesn't have a diaphragm.....
 
 

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