How to Replace a Primer Bulb
Replacing primer bulbs in small engines is one of the most common types of tool repairs, and this article explains professional steps for primer bulb replacement in two engine design types.
My Ryobi 825r will start but when I pull the trigger the engine does not respond and the trimmer does not spin. I think its the trigger assembly and/or the trigger cable. Are my assumptions correct? Am I missing something else? And is this a repair I can do myself?
My pull rope broke, I have taken the trimer apart and there is no way to restring the rope? Do i have to buy a new pully or starter assembly. And it dose not say what you get with a new starter assembly ?
When replacing the primer bulb several parts of the carburetor came off. I thought I put them back on the correct way but now all the trimmer will do is idle. When I give it gas to start trimming it dies. Should I replace the whole carburetor kit?
Noticed recently lower shaft housing is slipping in the click-link connector. - and although motor runs at high speed - get no joy at trimmer or acces. end. Part #753-0453 does that include female type fitting (not rounded out)? Is it repair I can make?
Did some major digging and here's what I found about the Ryobi 825R trimmer:
* Engine is 793-00007 aka AC-2.1, 26.1cc
* Fuel Line 0.080 ID, same as poulan 530069247. Tygon is better.
* Carburetor is Walbro WYL-187-1 aka Ryobi/Ryan/MTD 753-1225
* Carb Diaphragm kit is D11-WYL
* Carb Metering spring is 98-3160-7
* Carb Rebuild is K20-WYL or Ryobi 753-04014.
* Primer Bulb is 188-16-1 (originally 188-12-1)
My trimmer wasn't running, and the fuel lines were bad so I replaced the fuel lines and fuel filter. Trimmer still didn't run. Realized the problem was in the carb. After looking at prices for a replacement, I decided to take my carb apart and clean everything. I paid special attention to the small holes and the diaphragm spring pendulum thing. I found that the diaphragm was getting stuck. After I took it apart, I scraped and cleaned it, reassembled the carb and voila! the trimmer runs again. I don't know how long this fix is going to work, but it saved me $66 so it's worth it to me. Hope this helps.
Hello: I own 825 4 cycle Ryobi trimmer. It has had fairly light use over about 3 yrs. Now the attachment coupling (female) is no longer sharply defined, causing attachment of various tools, including the original dual line trimmer, to spin slowly if at all. The motor is running fine. Can that coupling, one that comes halfway down shaft from motor, be replaced? Thank you
The coupling is part of the upper shaft assembly. The coupling, as well as some other parts, are permanently attached to the cable at the factory so they can't be replaced separately. The upper shaft assembly is part #753-04503.
My Ryobi has a black plastic and metal part that comes out of the top of the carburetor and attaches to the fuel return line. It looks somewhat like the breather tube assembly listed here, but it makes a 90 degree angle and is male on both ends going into the carburetor and the fuel return line. Is that the same as the part listed on your parts list. If not, can you tell me the part number?
I'm looking for the same thing. Mine is busted. I bought the fuel line with filter from this site but it does not come with that 90 degree piece. Do I have to buy a whole carburetor? In any case, even some photos of carburetor don't show that piece.
I have replaced the starter rope on my Ryobi. I put it back together and was able to start it. After I shut it down I was unable to use the pull cord to restart it. It was like it was seized. I took it apart again, put back together and thought I was ok. Same thing happened. Once I got it started I was unable to use the pull cord. Did I put it together wrong or is a part broken?
My trimmer attaches to several tools. It is disengaging from the various tools during use and the shaft is spinning inside. Is it missing a spring or something that would keep the couplings engaged? If I hold it vertically it will re-engage and work briefly. Then disengages again.
It appears that the trimmer is not getting fuel from the tank. There are three pieces of orange pipe in the bottom of the tank, not attached to anything. It looks like there is no serviceable parts in there. Do I have to purchase a gas tank and would that tank have all the necessary internal lines?
You have two options well replacing the fuel lines. You can replace just the lines. The pickup line with fuel filter is part #791-182353 the fuel return line is part #791-182352. You could also replace the entire fuel tank. It includes both lines already installed. The fuel tank assembly is part #791-182355. All of these parts are available from http://www.ereplacementparts.com .
I just ordered a new carburetor for my Ryobi 825r, can you tell me where the two lines go on the two outlet fittings on the carburetor and how deep in the tank the other two ends go. I replaced the fuel lines also.
The fuel intake line on my 825r string trimmer deteriorated causing some of the small hose fragments to get stuck in the carb. I have replaced the hose and disassembled and cleaned the carb. It will not run well. It starts and stops. Any suggestions other than replacing the total carb?
Hi brian, Unfortunately Ryobi does not provide individual parts for the carburetor on the 825r. It is only available as an assembly. It is part #753-1225 and is available from http://www.ereplacementparts.com. Good luck with your repair! -Mark
I replaced my fuel lines and primer ball after finding cracks in them. My trimmer will start is I prime the cylinder with fuel but will not remain running. It will not start with this priming. What do I do?
Hi Nick-BG, I think the problem is going to be in the carburetor. When fuel lines become cracked it can let dirt into the carb. The lines breaking down themselves can also put debris into the carb. Replacing the carb should get things running again. It is part #753-1225 and is available from http://www.ereplacementparts.com. Hope this helps! -Mark
Reply: Lack Of Fuel From Carb
Nick, I was wondering how you got the intake fuel line with the filter on the end inside the fuel tank? Of course I could take the plastic intake line off the filter and shove the fuel line into the top opening then fish out the line and reinstall the filter, but I kind of hate to take the line off the filter because it fits so tightly and would probably have to be cut off. How did you do it?
Also, did you buy a new carb, or just clean the old one to get it running again?
Am wanting to get to the clutch for inspection. Attempt to turn hidden screw cw and ccw by inserting long flat screwdriver blade thru the clutch housing shaft is pushing the limits of the screwdrivers quality.
Any suggestions beyond destroying the clutch housing?
Am going to order a new clutch assembly PN 753-05860 at a cost of $20.19. There is shown a washer behind the clutch assembly PN 9162-1 that has a price of $11.12.
It appears to be an ordinary washer- why should it be so expensive??