Question about Ryobi RCS3535CA Petrol Chainsaw 35cc 35cm/14" bar

1 Answer

Why won't my chainsaw prime?

My chainsaw ran a complete tank of fuel. Filled it up again - would not start. Priming bulb won't fill up. Checked filter in petrol tank that's good and clean

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  • John Frances May 02, 2015

    Thanks all for answers, i sorted it the pipe had come off from carb to priming bulb replaced as it was so loose worked first time as normal :)

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  • Ryobi Master
  • 2,760 Answers

If no gas will enter priming bulb at all I see only a few possible things for this
(1) gas line broken/melted
(2) filter looks good but has internal plug
(3) primer bulb has a small crack in it (most common )

Posted on May 20, 2015

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Posted on Jan 02, 2017

  • 2239 Answers

SOURCE: no fuel (2 stroke) getting

Change the fuel filter in the tank, if this does not help there is dirt in the carb, remove the carb, under the pump diaphram is a filter screen, replce this.

Posted on Apr 07, 2011

dontbother10
  • 2220 Answers

SOURCE: Has Ryobi RCS 3535A chainsaw a fuel bulb priming

The numbers you supply don't cross to an operators manual but that is typical of Homelite/Ryobi. I'm going to make an educated guess that it does not have a primer system. Other Ryobi saws with primer systems include it in the specification. The 3535A does not. Close scrutiny reveals no primer.
IMO fuel primers on chainsaws are one more source of problems. In the USA ethanol additives attack fuel hoses. Without a primer routing is from the fuel tank directly to the carburetor and much simpler to replace. Primers on chainsaws operate differently than 4 cycle engines too. No fuel is injected into the carburetor or engine, its only purpose is to ensure the carburetor is full of fuel,
Typical Fuel hose routing:

  • The hose in the tank with the filter on the free end connects directly to the carburetor input connection.
  • If the saw is equipped with a primer bulb, an output line from the carburetor connects to the suction side of the primer (once the bulb is collapsed it draws fuel from the tank through the carburetor to refill as it inflates).
  • The pressure side of the primer returns displaced fuel to the tank as it is depressed.
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HTH
Lou

Posted on Nov 15, 2009

eugbug
  • 479 Answers

SOURCE: I have a ryobi chainsaw that floods even if I dont

Ideally saws should be stored in cool conditions out of the sun to prevent pressure building up and with the tank lower than the engine.
Drain the tank also and run the engine dry, as when the fuel evaporates, it leaves a varnish residue which coats the small pasageways in the carburettor.
It is possible that the fuel pump diaphragm in the carburettor is punctured and this is allowing fuel to seep into the saw

Posted on Apr 23, 2011

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1 Answer

Not getting gas


The bulb usually doesn't feel that way, you're thinking of a small 2-cycle machine where the bulb will fill up with fuel and offer resistance when pushed. A primer on a snowblower is merely to get fuel flowing to the carb from the tank, whereas the bulb on 2-cycle items actually purges air from the fuel circuit. If you keep pressing the primer you should see fuel drip from the carb inlet. Btw, if you see where an air filter might be on other motors, a little metal cup looking thing, try removing the bolts and flipping it over so the fuel drips out easier and snow doesn't have the chance to fall into it if it were facing up. Once you see fuel dripping out, provided you ran it dry last season when you put the blower away and the carb isn't gummed up with varnish, it should start on full choke. Give it about 3-5 seconds and move it to half choke. Once it seems to want to run on its own, open the choke completely and you should be warmed up and ready to go. Also always remember to let engines idle a bit to cool down if you've been running them at high rpms.

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1 Answer

Lawn Trimmer will not run


Have you checked the fuel line inside the tank? Usually there is a little filter on the end of the line inside the gas tank that when it gets dirty with restrict the flow of gas. Go spend $3-4 and replace and that should fix it. If it doesn't then I am guessing you probably still have something on one of the jets on the carb.
Good Luck

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1 Answer

90HP Yamaha won't turn over


It sounds like you have a air line busted somewhere i had one of my outboards do that it wouldnt prime for anything so i ran everything down checked the fuel pump and cleaned that out tore apart the carbs cleaned them bought brand new fuel hose still scratching my head i took off the air lines for the carbs and put new ones worked like a champ

Aug 22, 2012 | Boating

1 Answer

Model # 358.797180, 200 mph. At first I thought problem was carburetor being gummed up due to being improperly winterized by previous owner. Replaced carb with new, did not fix problem. Also replaced fuel...


The primer is just a small pump that is supposed to pull fuel through the carburetor from the tank supply line/fuel filter. The filter is supposed to be connected into the longer line at the rear of the tank. This lines goes to the carburetor uppermost port and the lower port is tied to the inlet side of the primer pump. Remove the tank side line from the pump during the pump test to make sure that you are not pulling fuel into the pump from the exit line. Try pumping fuel at this point--if nothing happens, swap the port connection at the pump and try to pump again--when correct, it will fill the tank supply line first, then the exit line from the carburetor that goes to the pump and finally fill the bulb. If you don't get fuel with either connection, then you have a leaking fuel line somewhere as you have already replaced the carburetor. Most saws use a rubber fuel line, not clear plastic. Hope some of this helps!

Nov 18, 2010 | Garden

1 Answer

Need to replace all gas lines


  1. Empty the fuel tank on the chainsaw of any remaining fuel. Pull the cap from the tank and turn the unit upside down. Drain the fuel into an approved fuel container. If the fuel is old (more than about a year) dispose of it according to local regulations for hazardous materials. (It can be kept longer by adding a fuel stabilizer.)
  2. Pull the fuel line where it attaches to the carburetor using the end of the needle-nose pliers. The old fuel line may take some force to pull free from the metal tube.
  3. Push on the fuel line to feed it into the fuel tank. Hold the chain saw upside down. Shake the unit to get the fuel filter into the opening of the tank. Pull the filter free of the tank. Feed the remaining fuel line through the access hole at the bottom of the tank. Dispose of the filter and old fuel line in accordance with disposal regulations.
  4. Feed one end of the new fuel line into and through the bottom access hole of the fuel tank. Push approximately 6 to 8 inches into the tank. You can pull back any excess line later. Grab the end of the plastic line with the needle-nose pliers. Bring the line through the gas tank fill opening.
  5. Attach the new filter to the end of the new fuel line. Feed the filter back into the fuel tank. Pull any excess line from the tank. You will want approximately 3 to 4 inches of fuel line inside the tank.
  6. Route the new fuel line to the carburetor. Cut the line to length with the cutters on the needle-nose pliers. Attach the line to the metal tube.
  7. Fill the fuel tank with fresh gas-oil fuel for 2-stroke engines and start the chainsaw. It may take a few pulls to prime the new line with fuel.
  8. Some models come with a priming bulb. Make sure you press the priming bulb three to four times before trying to start. This will prime the gas lines and remove any excess air trapped in the lines.

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2 Answers

Ford fusion 1.4 tdci will not start unless the hand pump is used


HAVE YOU CHECKED THE FUEL LINES WHERE THE FUEL PRIMING PUMP IS CONNECTED FOR ANY CHAFFING THEY ARE COMMON FOR CHAFFING BESIDE THE FUEL FILTER WHICH WOULD EXPLAIN WHY FUEL IS RETURNING TO FUEL TANK.

Sep 11, 2009 | 2004 Ford Fusion

1 Answer

Need manuel to show how gas lines are run to carb. & pump bulb


HOW TO CHANGE FUEL LINE ON McCULL0UGH 2014 CHAIN SAWS.

I have successfully changed the input fuel line by purchasing Tygon tubing from a local lawn equipment dealer. I did not see the box he cut this from, but the tubing I bought measures 0.190" outside diameter. I gave him a piece of the old tubing and he matched it up. A 18 inch piece cost me $1.19.

The routing of the fuel line involves three pieces, one piece from the fuel priming bulb to the carburator is 3 inches long, a piece from the fuel priming bulb to the gas tank is about 4 inches long and the piece from the fuel tank is about 7 inches long. The priming bulb sucks air and fuel from the carburator and dumps it back into the gas tank. Therefore, when you press this repeatedly, gasoline will eventually appear in the bulb when the gas line to the carburator is full of fuel. The bulb may not completely fill, there will always be a little air in the bulb.

The fuel line in has a filter on the end within the fuel tank. If you find this has broken off, as I did, you have to turn the tank upside down and shake the filter and any pieces of broken fuel line out of the tank.

Replacing the fuel lines within the carburator compartment is easy if you remove the carburator first. To work on this you must remove the two screws holding the carburator to the engine. You may need to use a small screw Torx driver, although on my chainsaw, there was also a long straight slot on the head. The line from the priming pump to the carburator goes to the left hand line on the carburetor (as viewing from the top with the blade extending away from you. The input line will go onto the right line on the carburator.

The two lines into the fuel tank are located in the middle of the tank left to right and one about 1/2" above the other. The upper hole is for the fuel intake line. The fuel line passes through this hole and a second hole visible within the tank fill hole.
This was the trickiest hose to replace. How I did it was to use a piece of #12 copper electrical wire stripped out of its insulation. This was fed through the 7-inch Tygon tubing piece until it emerged from the far end. I also found it necessary to put a bull nose end on the Tygon tubing in order to get it to feed into the tank hole visible from the tank fill hole. Why? I don't know, but after 20 minutes of trying to feed the hose (both naked and with the electrical wire inside) into that second hole, I gave it a bull nose on the tubing by careful cutting with sharp scissors and using a sanding block. Perhaps McCullough has a special tool to do this, but a call to their 800 number could not get a knowlegible answer from the parts person.

After the Tygon tubing shows up in the tank fill hole, I pulled it further with needle nose pliers and was able to pull the copper wire back out of the tubing. I then cut the bull nose lead I put on the Tygon tube and installed the filter onto it. I found that a little oil on the nozzle and the carburator lines makes the tubing easier to slip on. The stuff the filter and Tygon tubing back into the tank fill hole and towards the front end of the tank so that it drops into the bottom portion of the tank. After attaching the intake line to the carburator, use the needle nose pliers to pull excess line into the tank.


Reassemble the carburator to the engine and you'll be good for another 10 years of happy chainsawing!

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1 Answer

FORD DIESEL WILL NOT START


This system should be self priming, however if it did run out of fuel, I highly recommend changing the filters.After doing so have an assistant turn key to run as you listen for fuel lift pump running,(under drivers side floor attached to frame, one of the fuel filters is part of pump,the other filter is on top of engine) Could have hurt pump by running dry. They are notorious for hard start after filter change and/or out of fuel.Hope this helps.

Jan 27, 2009 | 2000 Ford Expedition

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