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Hi I have a FS85 trimmer that when running seem's to be pressurising the fuel tank forcing fuel up past the fuel line grumetts

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: I REPLACE THE FUEL LINES,NOW IT ACTS LIKE IT WANT TO START,BUT D'

http://outdoordistributors.com/pdf/Ryobi/RYOBI-700r-serials-304051232-thru-.pdf

Have a look at this drawing.

Posted on Apr 18, 2009

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#1 Taper
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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

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SOURCE: repairing fuel line on craftsman 32cc weed trimmer.

Cut the end of the line at a sharp angle. Spray WD-40 on the line and fuel tank hole. Slowly screw the line in the tank far enough so you can connect the fuel filter if you are replacing that line. If not just push the line into the tank if you have a two line system. Remember on the fuel primer, the long tip has the line going to the tank, and the short tip has the fuel line going to the carb.

Posted on Sep 05, 2009

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SOURCE: how to replace coil on stihl fs85 weed trimmer

Remove the starter & cylinder cover and look for the coil mounted next to the flywheel. Remove the 2 screws holding it to the cylinder and cafefully pull the wires through the clips that hold them to the block. Install the new coil in the reverse order and set the air gap between the flywheel and the coil with a business card. Let the magnets on the flywheel pull the coil towards it with the business card in between. Tighten the screws and spin the flywheel to remove the card. Reassemble the stater and blower housing.

Posted on Sep 17, 2009

  • 52 Answers

SOURCE: String trimmer, fuel lines disintegrated, I need routing.

The Walbro has two connections on it for the fuel line. My Walbro has one connection on the side of the idle screw and main fuel adjusting screw. This connection hooks up to the suction side of the primer bulb. Usually the shorter stem. (You actually **** fuel through the carb instead of pushing it through.) On the other side of the carb is the other hook up. It draws fuel from the tank. This line will connect to the side of the tank that has the filter. The other side of the tank is your return and it hooks to the other connection on the primer bulb. Usually the longer stem.

Posted on Apr 19, 2010

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1 Answer

On an unidentified trimmer/edger, How does the gas line run between the carb., fuel tank, and purging bulb?


Hi Galligher:
fuel line typically goes
- from tank out (this is the one that has the filter inside the tank end) to carb inlet.
- from carb out to bulb suction
- from bulb out back to tank.
Cheerfuls

Feb 07, 2016 | Garden

1 Answer

Leaks fuel out of the fuel cap on;y when operating. Changed cap and fuel tank no fix. Seems to be pressurising the tank.


Strange...

Make sure the cap has the orange or gasket in it... the carburetor itself won't pressurize the tank, especiallyif the equipment is running, can't do both at the same time. I would put it in the upright position against the wall or... then see if it's actually coming from the cap itself and not the holes where the fuel lines are. If you can , send me a pic of the area... what's also possible is that the threads of the tank are comprised.

Oct 08, 2015 | Garden

1 Answer

Stihl FS85 starts fine, But not take full throttle


Pumping the primer bubble while the engine is running should cause the engine to over fuel and stall (if the tuning is correct). Sounds like its not fueling enough, pumping the primer is forcing fuel through the carb causing the engine to pick up rev's, but this is soon exhausted which is why it wont rev on the throttle.
* Check that the fuel line is not damaged and drawing in air. (if this is intact try the next step)
* Strip and clean the carb. Replace any diaphrams if needed.
* Check gaskets seal between carb, air filter and cylinder.

Just out of curiosity what standard carb settings did you use.?

May 23, 2013 | Stihl FS 85 Weed Eater

1 Answer

Why is my petrol tank pressurised in my petrol blower?


There will always be some pressure in the tank, if the fuel in your area is poor quaility i have seen the fuel actually boil in the tank increasing the pressure and causing poor running.

Feb 23, 2013 | Ryobi Garden

1 Answer

Lawn trimmer Petrol powered


hello sir, my machine will only start when pumping primmer bulb or squirting fluid in the carburetor than stops. the fuel line has broken off, in most small carburetors this is a ongoing problem.old fuel will crystallize when left in tank for a long time.plugging up ports, fuel lines, small screen in carburetor.fuel lines will dissolve clogging carb.this is why it will run when the choke is on creating a vaccum to where there is fuel forced in the carb to rum,also the gas will evoporate leaving the oil behind clogging up carb.the thing to do is remove carb. and clean out,replaceing gaskets or fuel line if necessory.use carb cleaner to clean out carb.make sure to make note where fuel line go.the fuel filter broke off of fuel line letting debris get in carb plugging it up.the muffler is known to clog up a lot on these machines where thay want run. the compression should be 60 to 120 lbs any thing below 60 is junk. when adjusting the carb screws turn in all the way than turnout 1 1/4 turns turn in slow untail machine runs also you need to check for spark by removing plug and grounding aginst engine to chech spark, ok.a new spark plug would be a good ideal too , if you are going to make these repairs use new fuel line and filter,hope this helps,any comments welcome,thank you, 33

Jan 24, 2012 | Mtd Garden

1 Answer

How do you get the fuel line connected to the fuel filter nipple on the bottom side of the gas tank on the Ryobi 725r gas trimmer?


You must run the fuel line through the back of the tank and out the filler hole,make your connections,i used a small amount of vaseline to make the connections.Then pull the filter into place,make sure some of the nipple of the filter pokes through,then slide the retainer ring on the hose and force it onto the filter nipple.

May 09, 2010 | Ryobi 30 Cubic Centimeter Curved Shaft Gas...

3 Answers

Stihl FS85 Stalls when warm and gas is given will still idle


Make sure the carb settings are correct. Screw both tuning screws all the way in and then turn ot anticlockwise the following settings H 3/4 of a turn, L 1 full turn. (this is set to the standard setting)

Jul 10, 2009 | Homelite Mighty Lite Lawn Trimmer

1 Answer

Replaced fuel lines and pressing the primer pump does not feed gasoline to the car.


Sounds like you have the fuel lines switched around. The fuel line closest to the primer bulb will be the shortest line. It only goes 1" or so into the tank. The other line will be the longest line, and sometimes the smallest in diameter of the two depending on the size of your trimmer, and must rest comfortably on the bottom of the tank.

Jim

May 24, 2009 | Homelite Mighty Lite Lawn Trimmer

1 Answer

Primer bulb not filling


Yes, I think the gas cap may be clogged. The gas cap must be able to breath, otherwise this vacuum will occur. Try starting your trimmer and when it starts to choke out, loosen the gas cap. It should get air back in the tank, then and keep running. If this works, clear the hole in the gas cap, or purchase a new one.

Jim

May 03, 2009 | McCulloch 26cc Gas Blower Mcb3208

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