Weed eaters are used by people to trim and cut the weeds that are growing in the gardens. Typically, these weeds are grabbing nutrients intended for the floras that these individuals, themselves, have intentionally planted. This is one of the main reasons why they are considered pests and need to be trimmed and cut down. Another reason is that the beauty of the gardens or the lawns are destroyed by the presence of thick and untamed weeds.
A weed eater is composed of different important parts. For your weed eater to properly function the way it is supposed to, you should make sure that all of these components are in good working condition. One of them is the carburetor or what is referred to simply as the carb. The function of the carb is to provide the proper amounts of air and fuel mixture to the engine of the weed eater. If your carburetor does not work, it would be more practical and cheaper to rebuild the carburetor than to buy a great new weed eater or send the machine to a repair shop. Here are the steps on how you can rebuild your weed eater carb.
Tools you’ll need:
- Screwdrivers – flat head and phillips.
- Rags or disposable towels.
- (Optional but encouraged) – a digital camera (like on your phone) to take pictures of where various parts are removed from. It makes putting the renewed carb back together MUCH easier.
Step 1: The first step is to purchase a replacement carburetor or a rebuild kit. You can actually buy this kit for a certain amount yet the price will surely be way cheaper than buying a new trimmer or sending it in for repairs. There are a lot of establishments that sell such kit. You can go to the nearest hardware store in your area. You may even place an online order for a carb on a specific website. Wherever you will be purchasing this component, you should make sure that you will only be making your purchase from a reputable seller. This way, you can assure yourself that the item will work once you attach it to your own weed eater.
Step 2: A rebuild kit typically consists of a wide variety of small sized components. These components are general items. This means that each of them are applicable to three or four models of carburetors. They are not utilized specifically for only one model.
Because of this, you will often be left with extra parts once you finish a weedeater carb rebuild. Don’t panic – it’s normal.
Step 3: On the back side of the carburetor, you will see the primer bulb being held in place by four small screws. Using a flat-head screwdriver, remove these screws. DON’T LOSE THE SCREWS – keep them somewhere safe but easily-accessible.
Step 4: After unscrewing the screws, the diaphragm gasket will fall out. This is the part of a carb that usually and commonly gets damaged. Check this part for damage, or wear and tear. It does not have to be replaced if it nice and soft. If it is brittle and easily snaps, replacement is necessary.
Frankly, you might want to replace it even if it seems fine. They do eventually wear out, and you are taking the time NOW to rebuild your string trimmer carb, right?
Step 5: You will need to remove one more screw – this time, to check on the push valve and the floater. These items may also need replacement so that your weed eater will be working properly. A push valve or floater that is bent needs to be replaced. Those parts that are also showing discoloration or any other sign of wear and tear should also be replaced.
Step 6: Check to see that the surfaces of the carburetor are clean. Dirt may hinder the carburetor from performing its function. You can use a clean cloth as well as a carburetor cleaning solvent. Here’s our guide on cleaning a string trimmer carburetor.
Step 7: There are various holes in the carburetor. Specific and small sized parts will fit inside these holes, such as the floater and the push valve. You should make sure that you will be properly placing the right parts inside the correct holes. There is also a spring that needs to be placed inside a specific hole.
Step 8: After placing all the parts in their right places, you need to screw them back with the screws that you have removed earlier. You should make sure that all the screws are screwed tightly.
A carburetor overhaul and rebuild may be required when you have owned and used your favourite weedeater featherlite for some time. Weed wacker carbs contain a number of replacement parts including fuel diaphragms, gaskets, metering needle, primer bulb, fuel lines and filter. The carburetor is a critical part of the weedeater engine and is necessary for providing the correct fuel and air mixture to the engine based on your throttle movements.
Unfortunately it is cheaper to buy a new weedeater featherlite then sending your existing trimmer to an engine repair shop to complete this overhaul. However it is far cheaper if you can follow the two part instructions below and conduct the carburetor rebuild and overhaul yourself.
Carburetor Removal and Stripdown
Follow the listed steps below and watch the video to remove and stripdown your Weedeater carburetor:
Safety: Do not forget to use safety glasses and gloves
- Remove the two allen screws on the filter cover.
- Remove filter and filter holding plate.
- Remove air filter housing from carburetor by unscrewing the bolts.
- Remove the carburetor from the engine.
- Remove the carburetor cover by removing the screw.
- Pull off the fuel diaphragm gasket.
- Turn the carburetor over and remove the primer bulb by unscrewing the 4 screws.
- Remove the other carburetor cover and pull off the metering diapragm gasket.
- Check the condition of all the diaphragm gaskets. If a diaphragm gasket is stiff, holed or cracked it will need replacing. It is good practice to replace the diaphragm gaskets every time you overhaul and rebuild your carburetor.
- Remove the fuel metering needle, metering lever and spring by unscrewing the backing plate bolts.
- Check the condition of the fuel metering needle. If the tip shows signs of wear or discolouration then it will need to be replaced.
- Remove the backing plate gasket.
- Remove both HI and LO fuel adjustment screws.
- Using carb cleaner spray the solvent on the carburetor parts including all holes and surfaces.
- Using a cloth or rag wipe down all carburetor parts
- Using a wire brush softly clean all the gasket surfaces on the carburetor ensuring to stroke the brush in the direction away from the carburtor. This ensures no material enters the carburetor.
- Leave the carburetor parts to soak in the carb cleaner for a few hours.
- After leaving for a few hours give the carb parts another final spray of the carb cleaner.
Need Carburetor and Fuel Line Parts?
Carburetor Part Replacement and Rebuild
Follow the listed steps below and watch the video to replace parts and rebuild your Weedeater carburetor:
Safety: Do not forget to use safety glasses and gloves
- Purchase a carburetor kit suitable for your model. Normally two types of kits exist where one kit contains the diaphragm gaskets only and the second kit contains all replacement parts for the carb including the diaphragm gaskets.
- Refit the metering lever, metering needle and spring. Refit the screw to ensure that the metering assembly is in place.
- Refit the backing plate and gasket by inserting the screws.
- The metering lever should be fitted such that it is flush with the backing plate. Use the metering level tool if required to set the height.
- Refit the metering diaphragm and gasket
- Refit the primer bulb end plate. The end cap fits only one way so do not be concerned about fitting it incorrectly.
- Refit the primer bulb by inserting the 4 screws. Check the primer bulb is not holed.
- Turn the carburetor over and refit the gasket and diagraph.
- Refit the end plate. Hold back the throttle mechanism to allow this plate to be refitted.
- Refit the HI and LO fuel adjusting screws.
- Refit the carburetor to the engine by inserting the filter housing bolts through the carburetor.
- Refit the filter and filter holding plate.
- Refit the filter cover.
- Follow the instruction to prime, startup and adjust the carburetor.
Need Carburetor and Fuel Line Parts?
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Introduction: How to Fix a Weed Eater - Carburetor Cleaning
We have all had a time where are weed eater just wouldn't start. So we dump it in the car to go to the small engine repair shop so we can spend money, a lot of money. Little did we know that fixing this pesky, no good weed eater was extremely simple and required no tools.
Note: This will work on blowers, edger, trimmers, hedge trimmers, any 2-stroke engines
Step 1: Tools
Alright, this list is very hard to remember. You might want to press that share button and email this list to yourself.
Let me repeat it to pound it into your brain,
That's really the only tool you will need! Everyone has a screwdriver, and if you don't, then well... umm... you get the point.
Step 2: Special Repair Knowledge
This repair requires knowledge, just like any repair. Unlike most small engine repairs, this one requires a special knowledge. Ready to see if you got what it take? Let me have a questionnaire. If you answer yes to any of these questions, you qualify to be smart enough to do this repair.
1. Do you have a pulse?
2. Do you have opposable thumbs?
3. Do you have a degree in advance small engine repair?
Ok, so the last one wasn't necessary, but I ran out of qualifying questions.
Step 3: Get to the Carburetor
To get to the bolt that hold on the carburetor:
1. Remove air filter cover
2. Remove air filter
Consult to the video if you do not understand (it is on the last step)
Step 4: Open the Carburetor
There will be two screws that hold the primer bubble in place.
Unscrew those and it will split the carb in half
Again, consult to the video
Step 5: Unclog the Filter
This is the most important step because this is the only reason why we opened the carburetor.
Of course you can skip this step, but then you just wasted ten minutes and you will need to stop by the repair shop.
Step 6: Put the Carburetor Back Together
All you have to do with this step is repeat the previous steps backwards. Does that make sense??? If it doesn't you might as well pack up the pieces in a box and take it to a small engine repair shop to give them a $100 dollar bill.... Or you could just watch the video on the next step.
Step 7: Finished
Now that your weed eater is put together, it should fire up.
This will work if you can start your weed eater, but it will shut off. Most likely it will not fix a weed eater that doesn't start up at all. If that is your case try this and replacing the spark plug.
All the previous steps are shown in this video
Please take the time to like, comment, and subscribe to this video. If you have any questions about small engine repair, please leave a comment here or in the video and I will answer to the best of my ability.
If you are on a mobile device, go to the direct link:
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How to Repair a Weed Eater Carburetor
Making repairs to the carburetor of your weed eater will help it to run more smoothly and last longer. With a repair kit you will have the parts you need to repair the carburetor.
Step 1 – Disassemble the Carburetor
Remove the allen screws holding the cover on. Remove the air filter and the grid. Remove the two internal allen screws. Now remove the air filter housing. Inspect the fuels lines for damage to see if they need to be replaced. Take the carburetor apart by unscrewing the screw holding it together. Take the cover off. Peel off the pump diaphragm.
Step 2 – Remove the Diaphragm
Remove the four screws on the other side of the carburetor. Take off the cover and then the next layer pops off as well. You will see a wheel-shaped diaphragm called the metering diaphragm. Peel off the diaphragm. Inspect the diaphragm to see if it is stiff. If it has little movement and is too stiff it will need to be replaced.
Step 3 – Remove the Needle
Remove the screws around the needle. Remove the pin; the needle assembly with the spring will come out with it. Inspect the tip of the needle. If a ring has been worn into the tip then it will need to be replaced. Remove the remaining plate and gasket so that the holes underneath can be cleaned. Remove the adjusting screw on the carburetor.
Step 4 – Clean the Parts
Spray the parts of the carburetor with carburetor cleaner. Spray it into the small holes. Be sure to wear safety glasses so it doesn’t splash in your eyes. Wipe off any black residue with a cloth. Remove any gasket residue with a soft wire brush. Let the parts soak in the cleaner for at least one hour.
Step 5 – Reassemble the Carburetor
Start by putting the spring in the center and put the screw next to it part way in its hole. Now take the metering lever with the pin and insert the pin with the spring under the notch of the lever and under the screw. Now tighten the screw. Now install the plate over that with the new gasket attached. Insert the two screws in the plate and tighten them. The meter lever should be flush with the body of the carburetor. Put the gasket for the metering diaphragm on now. Then put the diaphragm on top matching up the holes on the edges. Insert the cover that goes under the primer plate. Now put the primer plate on top. Insert and screw down the four screws at the corners. Install the adjustment screw. Screw it in all the way with a flat head screwdriver but not too tightly. Then unscrew one-and-a-half turns.
Step 6 – Assemble the Other Side
On the other side insert the screen. Use a blunt object to push down on the screen gently. Insert the gasket onto the cover and then put the diaphragm on top of the gasket. Then place the cover on. Put the top screw in and tighten it.
Step 7 – Put the Carburetor on the Weed Eater
Now put the carburetor back on the weed eater. First attach the throttle lever. Match the carburetor up with the holes on the weed eater housing. Hold it in place and put the carburetor cover with the two screws in place. Then screw in the two screws. Next connect the fuel lines. The smallest line goes to the connector in the front. Connect the larger line to the other connector.
Eater repair weed carburetor
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