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Craftsman weedwacker model # 358.791510

Changed fuel line and now won't start poured some gas into carburetor and it starts so I think the carburetor needs to be clean how do I clean it.

Posted by Anonymous on

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6ya6ya
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Posted on Jan 02, 2017

  • 246 Answers

SOURCE: I need to know the gas mixture ratio for a craftsman weedwacker

Hello mcguilmd:

>>All Two Stroke Engines will use a 50 to 1 Ratio using Today's Two Stroke Oils. I once had an Old Chainsaw probably from the 1950s, maybe Earlier 70s that had a sticker on it that said to use a 25 to 1 Fuel/Oil Ratio, but that would have been using Two Stroke Oils of the Time Period the Chainsaw was Manufactured. I was having a Problem with Oil Coming Out of the Muffler and Started Decreasing the Oil in the Gas. I Reduced the Oil Until it was a t a 45:1 Ratio and Decided to be Safe, I would Use a 40:1 Ratio Mix. In that Chainsaw I used 50 to 1 Ratio with no problems. Today's Two Stroke Oils compared to Yesteryears are more Efficient at Lubricating. It is like comparing Today's Synthetic Motor Oil to Motor Oils of Decades ago. All the Equipment I use in Landscaping, anything from a Weed Eater, Leaf Blower, Chainsaw, Hedge Trimmer, use 40 to 1 ratio, and I use all types of makes and models, Stihl, Homelite, Husqvarna, Shindaiwa, and Echo, Sears. I mix up a 5 Gallon Fuel can and use it in all of the Equipment for my Customers and for my Landscaping. I like my Fuel/Oil Ratio a Little Heavy, so I use a 40:1 Ratio. The Following was Copied and Pasted here from and MTD E-mail to me when I Asked for the OEMs Suggested Mixture for this Unit. The mixture, as described by the engine manufacturer, is a 50:1 ratio when using the approved types of 2-cycle engine oils.
50:1 ratio is a mix consisting of 2.5 ounces of 2-cycle oil per 1 gallon of gasoline.
The 2-cycle oil used should be approved and have one or more of the following specification titles: NMMA TC-WII, TC-W3, JASO FB, or JASO FC. NOTE: If unsure of the 2-cycle oil specifications, or the oil is not approved, use a 32:1 fuel to oil ratio. This ratio consists of 4 ounces of oil per one gallon of fuel.
NOTE: Always mix 2-cycle fuel oil and fuel in an approved gasoline safe container prior to filling the engine. Make sure to use a separate gas can for this 2-cycle fuel mixture and label it accordingly. Keep in mind that the fuel capacity of these engines normally is less than a gallon, therefore you will have to use this extra oil mixture for multiple fuel fills. Adding a fuel stabilizer will also help to increase the shelf life of fuel.
>>I Suggest Using a 40:1 Ratio and if Oil Starts Coming Out the Muffler then go to a 50:1 Ratio.
Please, Do Not Hesitate, If I Missed Something or 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)

Posted on May 14, 2009

  • 1 Answer

SOURCE: I have Craftsman 17" Weedwacker and need fuel lines

Hey jncsurf, I had to buy fuel lines last week. I called the local sears parts store, and gave them the model number. They had a rather generic bag with the correct diameter lines. Just cut to the approximate length.
But now I have a problem: I didn't note which lines went where when I pulled the lines off. Could you tell me where does the line from the primer bulb go: top or bottom barb on the carb? Thanx.

Posted on Jun 22, 2009

canbruce75
  • 1776 Answers

SOURCE: Craftsman trimmer won't start

Let's start with the easy stuff first. Remove and clean the spark plug. Look into the tank and fish out the fuel filter. It should be stuck in the end of the fuel line in the tank. I usually use a short piece of coathanger with a small hook bent into the end of it. Clean or replace the fuel filter. The next thing is to clean the small screen at the exhaust. Remove any carbon build-up there that you can. Sure hope this helped and best wishes.

Posted on Aug 17, 2009

  • 1 Answer

SOURCE: Craftsman gas 25cc weedwacker starts, runs a few secs, then dies

The gas take up line is disconnected or is broken. I have the same problem and need to find a diagram to fux it.

Posted on Aug 28, 2009

  • 11 Answers

SOURCE: I have a craftsman 32cc

Sounds as if the Carb needs to be cleaned out. Get yourself a can of non-chlorinated brake cleaner and spray the carb out really well. Then reinstall the carb. Also check any ports in the carb to make sure there isn't any debris blocking the flow of fuel. I would also suggest getting some Stabil Marine (blue) fuel stabilizer. The ethanol in gas destroys small engine carbs. Just mix this in with your gas tank the next time you fill up. How old is this fuel? The ethanol also absorbs water, so even while in the gas can it is obtaining moisture. The Stabil Marine formula helps lesson the effects of the ethanol.

Posted on Aug 02, 2010

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My craftsman weedwacker 27cc curved shaft wont start and cant figure it out


I need to ask. Did you leave fuel mix in it for a long time? If so then the carburetor will need to be cleaned with a special cleaner. and not the spray can stuff.

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If you are happy the carb is now ok and the plug gets wet with fuel, then either there is no spary ( remove the plug, place against the cyliner, away from any fuel source near the plug hole, crank the engine and see if there is a spark ) if there is a spark, then it could be a sheared flywheel key knocking the ignition timing out.

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I am assuming that it was working when you stopped using it and I am also assuming that you stored it without running it dry. More than likely ththe gasoline evaporated in the carburetor and plugged it. There are very small holes in the carburetor that mix fuel with air which results in combustion but if those holes are plugged it won't start. If you take it to a repair shop they will want to replace the carburetor. If you are able to disassemble the weed wacker and remove the carburetor, I have had success in soaking/submerging it in fuel line/injector cleaner, it can be purchased at an auto store. Do not remove the small adjustment screws in the carburetor. If you do not want to disassemble it, you can try emptying the gas out of the tank and replace the gas with the fuel line/injector cleaner. Pull the starter several times to move the cleaner into the carburetor, let it sit over night, repeat again a few times. then put gasoline in the tank and try to start. Its worth doing over and over to clean out the residue. If that fails you can get a new carburetor online from Sears and simply replace it.

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You probably have a bad hose or a bad hose connection that is sucking mostly air instead of delivering full fuel to the carburetor!

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Machine will start but won't stay running. give some gas and it runs for a couple of seconds and then dies. i did replace the spark plug but it is doing the same thing. it is a 25cc craftsman weedwacker...


I had a similar problem and it was simple to fix. I hope yours is the same. The line going into the gas tank is not far enough down in the tank.Once you prime it with the primer bulb , it will run till that gas is gone. No fuel from the tank is getting to the carburetor. If you've replaced the fuel lines recently, this may be your problem. If not, try cleaning the fuel tank and the carburetor. Hope this helps.

Sep 08, 2010 | Craftsman 25cc Gas Line Trimmer

1 Answer

Fuel Lines - 25cc Craftman weedwacker


Your Craftsman Trimmer/weedwacker:
http://www.searspartsdirect.com/partsdirect/getModel!retrieve.pd?modelNumber=358795591+&pathTaken=partSearch

Best Poulan Engine Match (probably real manufacturer):
http://www.ordertree.com/modelinfo/PWE/BC2400-Gas-Trimmer-Type-6/75.BC2400-Gas-Trimmer-Type-6.1.59.1.html

My decisions are being driven by my experience with Poulan chainsaws. Small hose in tank (long enough to reach all corners), filter on bottom, connects to lowest connection on carburetor. Small hose on upper carburetor connection to small fitting on primer. Large hose from large connection on primer through largest tank hole, roughly mid tank long. nothing on bottom. I suggest you leave the 2 connections on the carburetor long enough they can be swapped (just in case) then try it. if no go swap them.

Typical fuel system and a suggestion or two:
http://www.fixya.com/support/r3706813-2_cycle_fuel_system_repair

This is how I would configure it if a chainsaw, doubtful they would do something completely different. In defense of Jerry, he knows how it should be done, clarity of instruction could use some help. Good Luck. HTH
Lou

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If you are certain that you have correcting gaped the plug then the next step is to readjust the low end idle carburetor. If you look you should see two holes in the plastic cover that lead to the flow adjustment screws they may even be out in the open. If they are not labeled H and L (the L is the one you want), check your manual for the correct one. A good place to start is turning the screw all the way in then backing it out 1 1\2 turns. Then check it. If you still have problems do 1\4 turns out. After about one full turn from that you might want to consider taking the carburetor off and removing the float bowl or the bottom for a good cleaning. A sticking float could cause problems with your fuel flow.
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Runs fine when first start. Dosen't want to start after warmed up.


Have you checked or Changed the Fuel Filter.
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7 Answers

Craftsman weedwacker won't start


When the Craftsman Weedwacker starts in idle and then stalls and the primer bulb will not fill with gasoline or will not pop back after being pushed in, then you have a blockage within the carburetor. The bulb is intended to **** fuel into the supply line, to prime it. To solve the problem, remove the carburetor, open the side that has ONE screw holding it (not the side with four small screws), remove all the two lines remembering how they were attached (the feeder line from the fuel tank attaches to the straight copper tube and the tube going to the bulb intake side attaches to the bent copper tube) and blow out the material blocking the fuel flow inside the carburetor. Then after replacing the carburetor, press the bulb and it should **** and discharge fuel easly. I have had two of these and the fuel path within the carburetor clogs easly. Jim Hart

Mar 13, 2009 | Craftsman 25cc Gas Line Trimmer

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