We need the primer bulb for a ryobi tiller purchased around 2003, the number on the engine ia SN4031UB24RA:EM date602 code
The bulb part is about 1/2 inch high, maybe and inch round, the plug on the end has two long pieces and two little round pieces between the long like this (:) kinda
The machine this fits on is a ryobi hand held tiller that I believe also orginally was removable and also had another tool that could be added like a trimmer.
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This is a problem with most ryobi tools. From what i've read over time the gas lines shrink and need to be replaced. You'll need to replace both the lines coming from the carb to engine and the one connecting to your primer bulb. I hear there is a kit that contains both the primer bulb and fuel lines for this exact problem.
There are aprox 5 sizes of primer bulbs that are common to trimmers, blowers, saws. You will need to be specific about carburetor brand and type when looking for a bulb. A small engine repair shop should have access to any of them.
Hi, I live in cedar rapids, Iowa. I just bought a primer bulb for my htc-12 homelite tiller. You should be able to order as many as you need, but I don't have the part #. Find out what the part # is and call this # 1-319-393-0443. They have 2 sizes, the bigger one is for the chain saws, the small one is for the tiller.( they have both) Carefully pry the plastic band off the primer bulb, press the new bulb through the band, then go get a tube of permetex weather strip adhesive ( orange box, black adhesive). Don't buy any other brand!. Lay a thin bead around the base of the bottom of the ring, press into place and let dry for a couple of hours. This adhesive works on almost any thing, and is not affected by gas, oil, or anything.
Vacuum created by piston operation after closing the choke pulls fuel into carburetor port into engine. In much the same way as the primer bulb provides fuel for the port. These type engines usually take a few more pulls before they will start. And if there are any leaks in carb. system will be very hard to start.
You can order them directly through Ryobi and pay a small fortune or you can go to any small engine repair shop and purchase the fuel line by the foot. I believe your primer bulb can easily be replaced with what your local shop will have in stock. The parts from your local shop will probably out last the factory parts anyway.