Question about Craftsman 29cc 4Cycle Straight Shaft Weedwacker Gas Trimmer ()

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Fuel line diagram for a craftsman weedwacker model number 358.798420

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6ya6ya
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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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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

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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

  • 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

smartr10U
  • 1305 Answers

SOURCE: Missing T piece from primer bulb to carburator

Sears has replacement parts and so do the OSH stores. If there's no store close, check with a local lawnmower shop and I'm sure they've got lots of replacement parts.

Posted on May 31, 2010

  • 3 Answers

SOURCE: Craftsman model 358.791042, gasoline weedwacker wont stay running

The high speed needle valve needs adjusting and it takes a special splined tool to adjust it. I currently am trying to find where I can purchase the tool to adjust the high and low carburator screws.

Posted on Aug 18, 2010

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How do I upload the manual? I want to see how to load the line


Hi and welcome to FixYa, I am Kelly.
Craftsman manuals are avalable for all models on this site:

http://www.managemylife.com/mmh/owner_manuals

You must have your model number

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http://www.managemylife.com/mmh/owner_manuals/search/product_type.Line%20Trimmers:Weedwackers,%20Gas?query=27cc+Craftsman+trimmer

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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.

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