Oil and gas mixture

Hi and wel;come to FixYa, I am Kelly.
The part you need is item 9 on most parts lists:

Your problem is caused by either drive shaft failure or.. clutch failure. Most of the time the drive shaft fails before the clutch.

The manual is here:
http://www.mymowerparts.com/pdf/Ryobi_String_Trimmers_Blowers_Tillers/700r.pdf

Shaft is PN 682064 or 753-04280

Sears parts direct has the shaft as item 10 this link:
http://www.searspartsdirect.com/partsdirect/part-model/Ryobi-Parts/Grass-trimmer-weed-wacker-Parts/Model-700R/0909/1503820/10060718/00002?blt=06&prst=0&shdMod=700R

Detailed view:
http://www.searspartsdirect.com/partsdirect/part-number/Ryobi-Parts/Grass-trimmer-weed-wacker-Parts/753-04280/0071/247/Model-700R/0909/1503820?keySuffixId=NA&productTypeId=x&searchModelNumber=700R&subCompDesc=Boom%20and%20trimmer&brandDesc=RYOBI&modelDesc=TRIMMER&pathTaken=partSearch&blt=11

Lower price here:
http://www.mowpart.com/p661995/Flex,-Shaft-(Rpls-682064)/product_info.html

Average price ($32.50)

Thanks for choosing FixYa,
Kelly

Check the fuel/oil mix ratio you are using. Some Ryobis use a 32:1 mix and some use a 40:1 mix. There isn't much difference there. To be on the safe side, if you machine is possibly running or tuned a little "lean" I would start off with about 4 oz/gallon oil to gas mix. Use synthetic 2-stroke oil also. Your machine will perform much better.

The gap for the Weed Eater 20cc engine can be set @ .025". The larger engine Ryobi 31cc/32cc class can be set @ .030" Either engine would operate within that .005" range and I know a 32cc Poulan calls for a .030" gap.

I'm pretty sure it's 50:1 but checked with your local dealer to be sure.

Try this link:
http://lawnandgarden.manualsonline.com/manuals/mfg/ryobi/700r_1.html

most of these use 2 wires coming out of 2 holes on opposite sides roll the firstwire clockwise, then the 2nd counterclockwise so that when the spool turns the string comes out its not hard

I would agree that is most likely the problem. I would just readjust.

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

Hello slabieniec:

The Newer 2 Cycle Trimmers use a 50:1 Ratio (OEM Suggested Ratio). I Use a 40:1 Ratio in Most of my Equipment, Except for Chainsaws and Hole Drillers/Augers. For the Chainsaws I Use a 32:1 Ratio and the Hole Digger/Auger Uses a 25:1 Ratio.
Please, Do Not Hesitate, If you Hit a Snag or this Does Not Correct the Problem, I am Here if You Require More Assistance.
Hope this Helps. Let me Know What Happens, Please. May the All Mighty Bless You and Yours. Be Safe and Be Happy. Thanks.

Good Luck

Respectfully

jbridger (John)

You need to push the primer button 10 times or so (the button at the top of the speed control) to get the gass pumped up into the system again. Likely gas not getting through the line yet. Takes awhile.