Question about Poulan "" Push Mower
The poulan mower HD4QN20RE does not want to stay on
Sounds like you will need to clean your carburetor.
Be sure to use compressed air to blow out all fuel and air passages.
Sometimes you can get by with priming the carburetor a few times, and letting it run a few times like that and it will flush the gunk out of the jets,but most of the time you will need to rebuild the carburetor.
If the mower/weedeater is over a couple years 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 seat the jet screws and count the number of turns it takes to seat the jets from their original position.
That way when you go to put the jets back in, you know how many turns they were in/out.
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I hope this helped
Posted on Aug 15, 2010
Line leak or primer bulb is rotted - see below:
I have had this issue on several units (lawnmower and weed wackers) that are more than 5 years old. Most common problem in order most to least: Flexible fuel line is rotted somewhere (replace all of it), the primer bulb is rotted ($10 or less), the diaphragm in the carburetor is old/stiff/separated (rebuild kits or new carb).
If you rebuild, pay particular attention to the diaphragm position on old one and you will need to prime the carb heavily. Winter weather can cause varnish and so you will need to blast all orifices with carb cleaner thouroughly no matter on any rebuild.
Sometimes you can get a whole carb with primer bulb and it makes sense and $$ to just swap it all out. Ensure you change the fuel lines no matter what. Check eBay - I got a new name-brand carb kit for $5.00.
If you need to spend more than $50 in parts or service or both and the unit is more than 7 years old, consider a new purchase - don't waste your time as I did once.
Posted on May 03, 2012
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Posted on Jan 02, 2017
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