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Craftsman Leaf Blower

Southern Ray

Southern Ray

Well-known Member
Have an old leaf blower that has become harder and harder to start. It has a Walbro WA 228 carburetor.
It will run but only after much pulling on the starter rope and squirting fuel into the venturi.
I took the carburetor apart and found nothing out of the ordinary and everything appeared clean.
Bought a new repair kit, the little black check valve under the primer bulb, and a new primer bulb-anyways.
Made sure every passageway is clean and reassembled. Went together nicely.
Applied the pressure test as per the Walbro video. It passed.
I cannot get the carburetor to pump fuel with the primer bulb from the tank nor a glass filled with fuel.
It will blow bubbles into the glass when I press the bulb.
I must have taken the carburetor apart more times than I can recall checked and rechecked and cannot find anything wrong.
Can anyone help?
many thanks in advance.
a225066.jpg
 
I can't help, only make a couple of comments. 1: Those things are the work of the Devil. 2: That's why Roundup and garden sprayers were invented. TDF
 
My Weedeater was getting kind of difficult to start, I ordered a carb kit, that wasn't it but when I took it apart I found a bad gasket that allowed it to suck air instead of fuel/air under the plate the card bolts to.
 
I have found that replacement carburetors cost little more than do the kits and usually solve the issues.

Dean
 
Most new carbs are cheap ! 25-30 bucks . Those carbs are very hard to clean , I use an ultrasonic cleaner and still have issues with some. If its carb issue ,I price new carb before attempting repair anymore .
 
that small primer bulb in most cases only puts air pressure in the tank thus pushing gas to the carb and a bit of overflow-- that is why you have bubbles -- so the gas is not getting where it belongs--is the gas fresh?? them motors it has to be fresh! are your diaphragms stacked correctly?? just thinking outloud here --but things to consider! good luck -- Roy
 
There are usually some check valves in the plate under the primer bulb. Sometimes they stick or they won't close off. Either way you have problems getting fuel up into the carburetor.
 
Try swaping the lines around. Had a Caftsman weedeater that the lines got cracked so I put new ones on and got them backwards it would blow bubbles in the tank and not prime the carb swaped them around and it ran great
 
I haven't had good luck repairing carburetors on small engines. Often there are passages you can't even get to because they're blocked off when carb is manufactured. If you can't get it to work by running a thin wire down all the accessible passageways, a new carb is the next step.
 
I appreciate all the replies.
Something Roy mentioned that I haven't taught of is the pressurized tank.
The cap for this tank is vented.
All the other suggestions have been tried except a new carburetor.
The blower is also probably nearing its life expectancy and ready to be tossed.
The challenge of fixing something is too hard to overcome.
It was in my father-in-law's shed when we cleaned it out after his passing seven years ago.
a225216.jpg

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Hello Sauthern Ray,

Dip one line in the fluid not both. Alternate untill gas comes out of the one outside the container, that is the return line. It goes in the tank about one inch,


GUIDO.
 
I had a similar problem with an old weed eater, I assume one of the checks is not seating properly. I open the air filter and give it a little squirt of fuel and then it's usually good for the season. I had it apart a lot of time too, like you say they are not worth spending much money on but it's a challenge and I don't give up easy!
 
A couple of things to consider. Did you get the gaskets and diaphragms in the right order? Pump side of carb is diaphragm, gasket and cover. Metering side of carb is gasket, diaphragm, and cover. Did you remove the hi and low adjustment screws? If not remove them and shoot a quick shot of aerosol spray into each hole. If you used a sustained blast of aerosol spray or compressed air through the passages of the carb, you might have damaged the internal check valves. Good luck!
 
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