Top 20 Ryobi Blower Vac 205mph Leaf Blower Or Vacuum Gas Powered Gasoline Zr08510 - Page 7 Questions & Answers

You can use a different bolt other than a replacement bolt from the mfg. as long as it's the right diameter, thread pitch, and length. eg: 10x1.25x40 = 10mm dia. x 1.25 thread pitch x 40mm long. The problem usually is that the head on the bolt for that diameter is too small and you'll have to use a washer. That's ok but if the head of the bolt is too tall, the bolt will hit the ground first, keeping the head unit from releasing some trimmer line.

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The oil pump is a fairly simple unit, to access the drive gear and pump you first need to remove the clutch and sprocket ( the clutch is spun onto the crank with a l/h thread) check the condition of the drive gear pinion and the condition of the pump gear, with the pump removed you will find the pick up pipe from the oil tank, on the end is a filter, so make sure this is clean.

Do you prime the engine when you want to restart it? If so you may be adding too much fuel and flooding it out. Try restarting it without adding more fuel. If you are not priming the engine, then add a pump or two and see if that helps. If it does not start, pull the plug to see if it is wet. If it is, then there is too much gas.

None that I know of. If you're having problems with hard to start and backfire, I believe this is an overhead valve engine so likely it needs the typical 100 hr valve lash adjustment. I tried locating schedule for this engine but gave up.

Go to ryobi website and get a user manual

Most common problem with weed eaters is the small fuel line breaks off inside of fuel tank usually flush with top of fuel tank - check to see if fuel line is still connected to weighted fuel filter inside of tank - replace if necessary. If fuel line is intact then adjust High speed adjusting screw 1/16 counter clockwise to allow a richer mixture - special tool may be needed to adjust - available on ebay. "https://www.6ya.com/callphilipforhelp

if there is a coil chek it , and chec sparcplug lead if tere is lead , test electric parts

return it to HD, no questions asked.

new carb gasket and manifold gasket then retighten the carb

Clean air filter, change plug. Then clean out gas that has gummed-up the needl valve and add some gum out.

Sounds as if you have crankcase air leak, check carb. Gasket and tightness. Also check crankcase cover and gasket.

I would recommend using something a bit more hefty like self adjusting locking pliers or even a plumbers' pipe wrench. If you can get the bump feed to free up, but it's out of trimmer line you may be able to manual spool it. Found a how-to vid on youtube that may be relevant to your model Ryobi trimmer - Howto string Ryobi trimmer

what's the question?

when ryobi products stop working it means it's time to buy a different make. Do not bother trying to fix it. They are classed as a use and through away make.

Refer to instructions that came with saw. https://images.homedepot-static.com/catalog/pdfimages/0a/0a7ce2db-eccd-465d-b9b1-2a86ef83d748.pdf https://www.manualslib.com/manual/682051/Ryobi-Ry43161.html?page=12

Hi there, Post a video or pictures. Its mechanical so few things could result in it not working. Is something obstructing it physically from moving within its normal operating range? Did something break or become missing from the unit? and lastly is dirt creating friction lock?good luckoh and ANYTHING that was man made can be fix or rebuilt the question is usually how cost effective is it gonna be.