I just picked up a used ryobi rgbv3100 mulcher vacum blower ,it had no gas in it i put the oil gas mix in it ,followed the instructions on the blower ,but cant get it to start ,any ideas on what i can do?

See spare parts here: http://www.ereplacementparts.com/ryobi-rgbv3100-41asgbpg034-handheld-blowervacuum-parts-c-7931_15636_18678.html
Sears provides a manual but lines are not specified: https://c.searspartsdirect.com/mmh/lis_pdf/OWNM/L0404046.pdf
This video may also be useful: https://www.youtube.com/watch?v=D3lmi3rtmh0

http://www.jackssmallengines.com/manufacturer/ryobi/leaf-blower-parts


Ryobi Leaf Blower Parts

Fuel/Oil Mix ratio is 40:1. That is 3.2 oz oil per gallon of gas, or 1.6 ounces of oil/ half gallon of gas. I highly recommend using a good synthetic 2 stroke oil. Many benefits there.

Most Ryobi products made in the past 5 years use a 50:1 fuel mix. Check the fuel cap to see if it is listed there. The older Ryobi product used a 32: 1 fuel mix ratio and it was usually listed on the sticker that shows you how to work the choke. If in doubt, go with the 32:1 ratio. The only thing it will cause is premature fouling of the spark plug. Too little oil in the mix will cause premature engine wear.

50:1 is 2.6 ounces of 2 cycle mix to each gallon (U.S.) of gasoline.
32:1 is 4.0 ounces of 2 cycle mix per gallon.

I recommend to use a 2 cycle mix that is specifically designed for lawn equipment and contains fuel stabilizer. The ones with stabilizer will usually be .5 ounces larger.

Good luck!

Hi, now if i bought something that cost that much and only ran for 3 min, i'd have it back to where i bought it in a hurry. I am assuming that you did have the proper mix of gas and oil, or oil if its 4 stroke.
if its a oil, gas mix and you did'nt put oil in,,,the motor is shot, otherwise, take it back. Not meaning to sound rude here, but thats really all one can say

gas oil mix

You need 2 stroke motor oil or chain saw oil.Mix it according to the lable to make up 50:1 oil/gas mix.

Unless it has a tag or decal on it saying it is a 4 cycle then it uses mixed gas/oil at about a 50:1 ratio. Straight gasoline will freeze the piston in the cylinder in mere minutes.

just use about 3 to 4 ounces of 2 cycle oil per gallon and you should be fine. a little extra lubrication wont hurt it

Ryobi trimmers I have had use a 32:1 oil mix. Just pick up a little bottle of Ryobi 2-cycle oil and read it to see that it will give a 32:1 mix in a gallon of gas. Pour it into a gallon of gas, and maybe a little fuel stabilizer too, shake it up and you should be good for the season.