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Air and fuel settings on carb

What is the high and low settings on 31 cc carb ryobi

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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#1 Taper
  • 1040 Answers

SOURCE: Runs only briefly after priming

Yes, Depending on how old your trimmer is, one of two things is wrong. Either the carburetor just needs a very good cleaning, or you need to purchase a carb. kit and replace the small screen, gaskets, and needle valve. It would probably be good idea to do both if your trimmer is more than three years old and if you have never replaced parts on carb

Jim

Posted on May 30, 2009

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panilling9
  • 284 Answers

SOURCE: when givin throttle dies

if they are not capped with limiter caps
you can try this turn both adj. cw with a small screwdriver until
they bottom out do not force once they stop turning
now back them out 1and1/4 to 1and1/2 ccw
that is the approx. initial setting.

Posted on May 31, 2009

#1 Taper
  • 1040 Answers

SOURCE: replacing fuel lines on ryobi 767r trimmer

The longest, and sometimes smaller in diameter of the two fuel lines, goes from the carburetor to the bottom of the tank. Leave enough slack in this line so that the filter that attaches to the end will rest comfortably at the bottom of the tank.

The other fuel line goes from the primer bulb to just inside the tank, (about an inch). make sure that you get the right size fuel lines. The plastic coupling goes on the end of this line, inside the tank. This keeps the line from pulling out of the tank.

(HINT): When feeding the lines through the tank holes, cut the lines at an angle. They will feed much easier into the holes. You can than cut them off square, once you know that you have enough to work with.

If you need further assistance, just let me know.

Jim

Posted on Jul 03, 2009

TeleFurb
  • 16 Answers

SOURCE: ryobi weed eater ONLY RUNS WITH CHOKE ON HALF WAY

Check the carb jets, they might be a gummed up!

Posted on Aug 25, 2009

mrgauge
  • 17 Answers

SOURCE: Want manual for RYOBI 31 cc 700r weed eater

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

Posted on Oct 01, 2009

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1 Answer

How do i set the carb on a ryobi


I haven't heard of Ryobi using a carb different to most similar machines which use a small diaphragm-type carb which uses suction impulses from the 2-stroke engine crankcase to lift fuel from the fuel tank into the carb. There is generally one screw which is a throttle stop and two screws which are fuel volume screws; one with a greater influence at low speed and idle and one with greater influence at high speed. The low speed screw does have some influence at high speed and the high speed screw does have some influence over low speed fuel mixture.

The basic settings of the screws should not be lost and if stripping and cleaning the carb each screw should before removing be carefully turned in, counting the turns, until it bottoms so after cleaning it can be returned to its former position.

The amount of adjustment from the position the manufacturer set each screw to would typically be in the order of plus or minus one-eighth of a turn and if adjustment of more than about a quarter-turn is needed it could indicate the carb needs a thorough clean.

Making an adjustment of one screw means adjustment of the other is almost inevitable. The basic requirement is for the machine to work under load efficiently at high speed and it is usually desirable the machine will be capable of idling. Obtaining both is rather a balancing act and will need some patience and time making minor adjustments of each screw and in practice some compromises must be made and if hard work at speed has been achieved it usually doesn't pay to try too hard to achieve a smooth idle.

Feb 25, 2015 | Ryobi Garden

1 Answer

My ryobi weed wasp starts on full choke bu cuts


Yes, you have a fuel issue. Start with adjusting the low and high setting to one turn out each, then set the idle. Could also be need carb rebuilt, air filter, etc.

Sep 14, 2014 | Garden

1 Answer

I have a Ryobi string trimmer model 875R, I can not get it up to speed . Is there a high speed adjustment on the carb.


Yes, you have both high and low settings as well as an idle screw. It sounds like you need to thin the high side out a bit by turning it CW until it starts to speed up. Do this while it's running and the throttle trigger fully depressed.

Sep 12, 2014 | Ryobi Garden

1 Answer

Continues to run at high speed after trigger released


adjust your carb low, high and try your idle screw first

Nov 13, 2012 | Ryobi Chain Saw. 20 in. 46 cc Gas Chain...

1 Answer

I Have a Ryobi Trimmer. I cleaned out the carb and put it back together but forgot the High and Low needle settings. I have got it to start but am having trouble tuning it. I have put a carb kit in it and...


adjust the needles both all the way in until they stops. unscrew both 1 1/2 turns and start engine. slowly accelerate and if it bogs down unscrew the HIGH SLOWLY until full speed is gain. some times you have to unscrew a little the low speed too. is a matter of playing with it. be patient you will get it. if you are still having problems you may have to take the bottom of carb. out and make sure the gas inlet needle is letting pass gas into the carb. chamber.

Feb 16, 2011 | Ryobi Garden

1 Answer

I Have a Ryobi Trimmer. I cleaned out the carb and put it back together but forgot the High and Low needle settings. I have got it to start but am having trouble tuning it. I have put a carb kit in it and...


the high speed check valve is most likely stuck and not allowing fuel to flow properly. the bad thing is it cant really be fixed. i have had some luck removing everything and putting it in an ultra sonic cleaner for about 10 minutes. however the fix doesnt usually last long. may want to look in to a new carb.

Feb 16, 2011 | Garden

1 Answer

2 cycle 31 cc 15" model 705r curved shaft trimmer plus click link weed wacker ..seems to flood,fuel drips from air intake ,after carb adjustments still will not start cant seem to regulate fuel ,checked...


Check the metering diaphram and check valve in the carby.The valve might be leakin and the diaphrm might be hard. do a google on the make of the carby as these are fitted with a few makes manly Zamer but. DONT use compressed air to clean or automotive type carby cleaner all will kill the valve and its not replacable..

Jul 01, 2010 | Ryobi 30 Cubic Centimeter Curved Shaft Gas...

1 Answer

My Ryobi 77 line trimmers revs like mad when I


Hi and welcome to FiXya. I am Kelly

What your describing it the result of fuel starvation. This can be caused by:

1. Debris in the fuel line or a crack in the fuel line
2 A clogged "fuel tank" internal pick up hose screen
3. A pinched fuel line
4. A clogged needle jet seat
5. A hole in the carb diaphram
6. Debris in the fuel air mixture screw / needle passages
7. A non vented gas tank cap.

Any of the above can cause the symtom you described. For sure it is a fuel supply problem.

I tried crossing the part numbers for just a Ryobi Model 77 and was unalbe to cross it to a working model number.

I came up with 2 different carb part numbers using a 30 CC engine

1st PN: 791-182875
2nd PN: 985624001

If you can pass the exact Model Number, I can provide you with a source for the carb or parts.

Thanks for using FixYa.

Kelly


Feb 15, 2010 | Ryobi 30 Cubic Centimeter Gas Brush Cutter

1 Answer

I have a 31 cc ryobi weed eater start for about


I think a new carburetor kit and a good carburetor tune up is in order my friend. Sounds like it's starving for gas. If it bogs down after warm up when you throttle it, then yes it needs a carb tuning. The L screw is the low side screw and should be turned in lightly until it seats then back it out one and quarter turns (1 1/4). The H screw is your high speed screw. Also, turn it in lightly until it seats, then back it out approximately a 3/4 turn. With these settings the unit should start and may even stay running. Again, if it bogs when throttled, while running turn the L screw out a little more maybe only 1/16th of a turn and then try it again. If it does rev then you'll have to adjust the H screw in about a 1/16th of a turn. But make sure you only do this after the engine has warmed up.

Hope this works, good luck
Skidooer

Sep 27, 2009 | Ryobi 30 Cubic Centimeter Curved Shaft Gas...

1 Answer

Ryobi pcn3335 wont start at all. Not a kick???????????


Hmmm could be a clogged muffler,fuel line, the carb might need to be cleaned or rebuilt or dirty fuel filter or if u have on the saw thers a low and high idle screw setting, usally on the side of the carb that might need to be adjusted.

Jun 04, 2009 | Ryobi 18-inch Electric Chainsaw Chain Saws

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