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B&S 3.0 HP-80202-1830-01 Carburetor Problem

I have a B&S 3.0 HP-80202-1830-01 on an older sidewalk edger that starts and runs fine when cold. As the motor heats it will not run without choke. I have disassembled and cleaned the carb. All passages were clean and will pass carb cleaner and air. I have checked for air leaks by spraying wd40 and starting fluid around the carb during running - no air leaks. The carb is unusual, with no float and no bowl. Rather, it has a diaphram with spring and two "flaps" that seems to pump fuel. Once it heats up (after about 2 minutes) it will run only at part choke. Adjusting the mixture screw seems to have very little affect. Advice?

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Posted on Jan 02, 2017

  • 3 Answers

SOURCE: Briggs & Stratton Engine Won't Stay Running

Make sure none of the hoses are cracked or loose fitting

Posted on Aug 03, 2008

  • 63 Answers

SOURCE: Motor will not start

For some reason the engine is flooded. To make it start do the following: turn the choke off, hold the throttle wide open and crank it until it starts.Do not push the primer bulb first. It already has more fuel than it can burn. It will smoke more than usual until it burns out the excess fuel. You may also have a carb problem but this should allow the engine to start so it can be diagnosed.


Please rate this solution if it helps-

Posted on Mar 19, 2009

  • 109 Answers

SOURCE: Snapper SS312 weed eater. Cranks when primed but won't run

I am sorry to say this, but the compression for that type of engine should be atleast 120 psi. Remove the muffler and look at the cylinder, it is scarred beyond repair.

Posted on Apr 22, 2009

  • 54 Answers

SOURCE: Need to know how to rebuild the carb on a 3.0 hp

The carb sounds like a vacu-jet, very easy to rebuild. Remove it from the tank but be careful not to damage the siphon tube. Then make sure to check for foreign matter in the tank (big problem with this system), clean and flush it. The idle screw is easy, the other is set by going from idle to full throttle quickly and adjusting it just so it doesn't stumble

Posted on Apr 26, 2010

  • 150 Answers

SOURCE: runs on starting fluid, not

Try spraying a little gas where you spray starter fluid. If it runs you may have to install diaphram kit. If it has a choke can get around primer not working.

Posted on Oct 01, 2010

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I can keep the 3.5 motor running for a couple mins by continuiously pushing the cold start primer, but wont run by itself. the edger only has been used a few hours over a couple years. do i need to buy a...


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1 Answer

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Check your fuel filter in the fuel tank to make sure it is clean if it is then"
Sounds like you will need to clean the carburetor or replace your carburetor internal rubber parts like the diaphgram and O rings.
Be sure to use compressed air to blow out all the fuel and air passages.
Be careful when blowing out the passages, because there are sometimes small rubber type seats in the bottom of some of the passages.
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Keep in mind that the float for the carburetor must be level when you go to reassemble the carburetor or follow the instrucitons you get with the carburetor kit.
If the mower/weedeater is over a year old, then I also recommend that you buy and install a new carburetor repair kit,because the diaphragm will get hard and that will cause it to be hard to crank.
When you clean your carburetor and remove the jet screws, you will first need to lightly seat the jet screws.
But before you lightly seat the jet screws count the number of turns it takes to seat the jet screws from their original position.
Be sure to mark the turns down on a piece of paper.
That way when you put the jets back in, you know to lightly seat them first and then turn them back out to their orginal position before you started.
This is a FREE answer,Please rate me

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