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Need Homelite Weed Eater Carburetor Help. 10 Repair Tips For Quick Fixes

Why Does My Homelite Weed Eater Carburetor Need Rebuilding?

If your Homelite string trimmer is having issues like not starting, bogging down under load, or running rough, the carburetor is often the culprit. Carburetors regulate the fuel-air mixture entering the engine and overtime can get gummed up with varnish, dirt, and debris.

Typical signs your Homelite weed eater carburetor needs rebuilding include:

  • Difficult starting – Having to pull the cord multiple times to get it running
  • Surging or stalling at idle speed
  • Not responding to throttle input
  • Releasing black smoke from exhaust
  • Running lean (high pitched whine)
  • Running rich (misfiring or backfiring)

If you’re experiencing any of these issues, a thorough carburetor cleaning and rebuild with a Homelite carburetor kit will often have your trimmer running like new again. Rebuilding the carburetor replaces worn parts and ensures proper fuel metering.

Step-By-Step Guide For Rebuilding Homelite Carburetor

Need Homelite Weed Eater Carburetor Help. 10 Repair Tips For Quick Fixes

Rebuilding a Homelite weed eater carburetor is a straightforward DIY project if you follow these key steps:

  1. Remove air filter housing and locate carburetor
  2. Take note of linkage positions and detach carburetor
  3. Disassemble carburetor recording location of parts
  4. Clean carburetor body and jets with carb cleaner
  5. Inspect diaphragms, gaskets, O-rings for damage
  6. Install new parts fromrebuild kit – diaphragms, gaskets, etc.
  7. Reassemble carburetor to original config
  8. Install carburetor, reconnect linkage and throttle cable
  9. Adjust idle screw and fine tune settings
  10. Test run trimmer for improved performance

It’s key to keep track of where all the gaskets, jets, fuel lines, and metering components go during disassembly. Laying parts out in order helps replicate the original layout during reinstallation. Don’t force parts together – careful alignment prevents damage.

Finding Right Carburetor Rebuild Kit For Your Homelite Model

Need Homelite Weed Eater Carburetor Help. 10 Repair Tips For Quick Fixes

Homelite has used various carburetors across their weed trimmer models over the years. Popular configurations are the Walbro and Zama carburetors. To get the proper rebuild kit, you’ll need to ID your carburetor’s make and model number.

Some common Homelite carburetor rebuild kits include:

  • Walbro WT-629 – Fits UT33650A, UT33600A, UT21500A
  • Zama C1U-W43 – Fits UTL26SS, UTL26SB, UTL33
  • Walbro WT-993 – Fits UT26HBX, UT26SS, UT21546
  • Zama RB-34 – Fits UTL25CDG, UTL25CSA

Confirm your carburetor model before ordering parts online. Cross-referencing the OEM part number is recommended. Kits come with new gaskets, diaphragms, o-rings, and sometimes jets.

Cleaning Carburetor Jets, Passages For Optimal Performance

Removing gum, varnish and debris buildup is critical when rebuilding a Homelite carburetor. Pay particular attention to the tiny jets, ports and passages which can become restricted over time.

Steps include:

  • Removing welch plugs to access jets
  • Blowing out passages with compressed air
  • Soaking metal components in carb cleaner
  • Using wire picks and needle nose pliers to clear obstructions
  • Rinsing and drying thoroughly after cleaning

Taking the time to get these metering components completely clean will optimize fuel flow and engine performance. Any leftover debris can lead to starvation or flooding.

Proper Installation Of Diaphragms, Gaskets, Needle On Rebuild

Pay close attention to the diaphragm orientation, needle settings, and gasket alignment when reassembling a Homelite weed eater carburetor. Improper installation can cause air leaks, improper fuel metering, and poor performance.

Tips for correct assembly include:

  • Note diaphragm curvature and install per original
  • Use new gaskets – don’t reuse old ones
  • Check metering needle height against specs
  • Ensure pickup filter, fuel lines sealed
  • Confirm float height adjustment in spec

Taking your time and methodically getting all the small parts lined up right goes a long way towards getting your Homelite trimmer running optimally again.

Adjusting Fuel Mixture Screws During Homelite Carburetor Rebuild

Tuning the air-fuel mixture is important when rebuilding a Homelite carburetor. There are typically 3 screws:

  • Idle speed – adjusts engine RPM at idle
  • Low speed – affects acceleration and off-idle performance
  • High speed – adjusts maximum RPM under load

Turn screws clockwise to lean the mixture; counterclockwise to richen. Adjust in small increments of 1/8 to 1/4 turns. Proper tuning prevents bogging, surging, black smoke or stall-outs.

Troubleshooting Running Issues After Rebuilding Carburetor

Need Homelite Weed Eater Carburetor Help. 10 Repair Tips For Quick Fixes

If your Homelite string trimmer still has performance problems after a carburetor rebuild, here are some troubleshooting tips:

  • Check for air leaks – ensure manifold, gaskets sealed
  • Inspect fuel lines for cracks allowing air ingestion
  • Remove spark plug – check for fouling, improper gap
  • Ensure sufficient compression with leakdown test
  • Verify proper spark with ignition system tests
  • Check compression release mechanism operation
  • Clean or replace air filter – restricted airflow causes issues

Retrace rebuild steps and ensure carburetor parts aligned and configured properly. Taking the time to diagnose and rule out other potential issues yields better repair results.

Maintaining Proper Gas-To-Oil Ratio To Prevent Future Rebuilds

To maximize the interval between carburetor rebuilds in your Homelite trimmer, be diligent about fuel upkeep:

  • Use fresh 87+ octane fuel less than 30 days old
  • Always mix in proper ratio of 2-stroke oil – usually 50:1
  • Use quality synthetic oil designed for air-cooled engines
  • Shake gas can thoroughly before each use
  • Run carb dry before storing longer than 2 weeks

Fresh properly mixed fuel prevents varnish buildup allowing proper carburetor operation and reducing overhaul frequency.

Tips For Sourcing Homelite Replacement Carburetors Online

Need Homelite Weed Eater Carburetor Help. 10 Repair Tips For Quick Fixes

In some cases rebuilding the carburetor is not feasible and a replacement is needed. When shopping online for Homelite carburetors, keep these tips in mind:

  • Confirm exact Homelite model – carbs are model specific
  • Check for OEM part number match
  • Read seller reviews and ratings
  • Choose sellers who accept returns
  • Evaluate pricing but avoid cheapest knockoffs

With an exact model match, quality aftermarket Homelite carburetors can be an affordable and effective replacement option.

When To Take Homelite Weed Eater To Shop For Carburetor Help

While routine carburetor maintenance is doable for DIYers, more complex repairs may require shop service. Consider taking your Homelite trimmer to a small engine repair professional if:

  • Unsure of exact carburetor model
  • Lacking proper tools, workspace or skills
  • Dealing with corroded components, varnish damage
  • Having trouble precisely tuning fuel screws
  • Engine has underlying mechanical issues

For challenging carburetor rebuilds, the expertise of a repair shop can be well worth the cost. They have the knowledge, skills and tools to get your Homelite weed eater running reliably again.

Step-By-Step Guide For Rebuilding Homelite Carburetor

When your Homelite string trimmer’s carburetor needs rebuilding, having a methodical approach helps ensure a successful repair. Follow these key steps:

  1. Get your work area set up in an organized manner. Have clean rags, a parts tray, small containers to hold hardware, and your carburetor rebuild kit contents nearby.
  2. Before disassembling, take photos of the linkages, springs, and component layout from multiple angles as a visual reference for reassembly.
  3. Remove the air filter housing to access the carburetor. Detach the fuel line and primer line from the inlet fittings.
  4. Tag or diagram the throttle and choke linkage positions before removing them from the carburetor. Note the routing of the governor spring.
  5. Remove the carburetor mounting nuts/bolts. Carefully separate it from the manifold without bending linkages or putting tension on the governor spring.
  6. Once detached, compare your carburetor visually to the parts diagram in the kit to identify components. Make sure you have the correct rebuild kit before fully disassembling.
  7. With the body separated, empty out any old gas residue and remove the bowl gasket, float pin, float, and inlet needle. Set aside for cleaning.
  8. Now go ahead and start dismantling the top section. The diaphragm will likely need prying off gently with a small flathead screwdriver.
  9. Document where the various gaskets, plates, screws, jets and orifices reside before removing them. Keeping their sequence intact makes reassembly much easier.
  10. With the carburetor fully disassembled, submerge all the metal components in carburetor cleaner solution. Let them soak for an hour to loosen varnish and debris.
  11. While soaking, use compressed air to blow out the small ports and passages in the body. Check that all pathways are clear by peering through with a flashlight.
  12. Retrieve the parts from the cleaner bath and scrub away any remaining grime with wire brushes, needle files, or syringe brushes for the tiny orifices.
  13. Rinse all components thoroughly with fresh cleaner then let air dry completely before reinstalling into the body.
  14. Check each part from the rebuild kit against the original before inserting. Look for differences in gasket thickness, diaphragm shape, etc.
  15. Carefully install the new needle, float, gaskets, jets, diaphragms per your notes/diagram from disassembly. Getting this sequence right is crucial.
  16. Secure the halves together initially with just a few screws to check alignments. Tighten fully once everything seems to fit together correctly.
  17. Reattach the linkages, governor spring, fuel lines in their original marked positions when mounting back onto the engine.
  18. With a rebuilt and properly configured carburetor now installed, test run the trimmer and make fine adjustments to the fuel screws.

Taking your time, documenting the original layout, and methodically cleaning each component helps ensure success revitalizing your Homelite trimmer’s carburetor. Patience and care goes a long way!

Finding Right Carburetor Rebuild Kit For Your Homelite Model

Need Homelite Weed Eater Carburetor Help. 10 Repair Tips For Quick Fixes

Choosing the correct rebuild kit is crucial for successfully overhauling your Homelite string trimmer’s carburetor. The right kit will contain all the proper replacement gaskets, diaphragms, and parts you need to refresh your specific carburetor make and model.

Here are some tips for identifying which rebuild kit you need:

  • Examine your carburetor closely and look for any manufacturer name or model numbers etched on the body.
  • Consult your owner’s manual if you have it – the carburetor make/model should be specified.
  • Search online forums where other owners discuss carb details for your trimmer.
  • Remove the carburetor and compare to photos of known units like Zama, Walbro, Tillotson.
  • Consider bringing the carburetor to your local small engine shop and ask them to ID it.

Once you know the carburetor brand and model, enter it into the search field on parts supplier websites. This will display the matching carburetor rebuild kits specifically for your unit. Here are some common configurations found on Homelite trimmers:

  • Walbro WT series – Used on many Homelite, Poulan, and Craftsman trimmers. Look for replacement kit WT-629 or WT-993.
  • Zama C1U and RB series – Popular original equipment on Homelite, Stihl, and Echo trimmers. Replace with Zama RB-34 or C1U-W43 kit.
  • Tillotson HS series – Seen on some older Homelite brushcutters. Use HS-6B rebuild kit.

When you order the kit, double check that the contents match all the worn parts on your existing carburetor. Most kits include:

  • Needle
  • Float
  • Gaskets
  • Diaphragms
  • O-rings
  • Screws

Some kits also have new welch plugs, inlet needles, and jets. Carefully inspect your carburetor and buy supplemental parts if needed. Pro tip – take photos during disassembly to reference worn components.

Beware that universal or generic rebuild kits likely won’t fit your specific carburetor properly. The diaphragms, gaskets, and screws may not align with the original part shapes and openings.

When shopping online, stick with OEM or major brand name kits such as Arnold, Oregon, Stens, or Rotary. Avoid cheap no-name kits that can have poorly fitting components made from inferior materials.

Confirm the supplier accepts returns in case you get the wrong kit. Keep all paperwork and packaging in case you need to exchange it for the proper rebuild kit.

Investing a few extra minutes identifying the correct rebuild kit for your Homelite trimmer saves frustration down the road. Taking shortcuts with a mismatched universal kit often leads to performance issues after reassembly from ill-fitting components. Get the right kit the first time to successfully refresh your carburetor.

Cleaning Carburetor Jets, Passages For Optimal Performance

Need Homelite Weed Eater Carburetor Help. 10 Repair Tips For Quick Fixes

One of the most important steps in rebuilding a Homelite string trimmer carburetor is thoroughly cleaning the tiny jets, ports and passages. Over time these metering components can become severely clogged with varnish, dirt and debris.

Cleaning removes these restrictions so fuel can flow properly for optimum engine performance. Here are some best practices:

  • Remove any welch plugs to access hidden jets. Note their locations.
  • Lightly tap and shake the carburetor body to dislodge debris trapped inside.
  • Spray all the exterior holes and openings with carburetor cleaner. Let soak briefly.
  • Blow compressed air through the jets, ports, and channels. Chase with thin wire if needed.
  • Inspect passages by holding up to a bright light. Ensure they are completely unobstructed.
  • For stubborn deposits, use tiny pipe cleaners or syringe brushes meant for carburetors.
  • Submerge the entire carburetor body in a carb cleaner bath. Let soak 30 minutes or more.
  • Remove carburetor body and scrub exterior with a toothbrush. Flush interior passages again.
  • Disassemble the carburetor further if needed to access restrictive areas.
  • Use carburetor rebuild spray kits that include precision tips to target passages.
  • Finish by blowing out passages completely dry. Do not let any liquid remain inside.

Pay particular attention to the idle circuit jets, emulsion tubes, and pilot ports. These meter fuel at low RPM where partial blockages cause the most performance problems.

It may help to compare the flow from each opening against its mirror image on the other side. A lower output indicates aRemaining varnish inside these precision components can alter the air-fuel mixture and hamper engine operation.

Be very careful not to damage delicate parts like the inlet needle and seat during cleaning. Avoid using stiff tools that could bend or distort their shape.

When soaking in solvent, use a plastic container instead of metal – brake parts cleaner will damage aluminum carburetor bodies.

Pro tip – brake cleaner sprays in a high pressure stream ideal for unplugging stubborn passages. Just avoid any plastic or rubber seals as it can dissolve them.

The best solution is an ultrasonic jewelry or parts cleaner that uses high frequency sound waves to thoroughly clean the interior channels. But careful manual cleaning can work almost as well.

With all the jets, orifices and bores cleared out, freshly rebuilt fuel circuits inside the carburetor will help optimize performance. Don’t skip this step.

Clean passages allow precise fuel metering and smooth engine operation. Taking your time ensures a like-new carburetor ready for flawless performance another season.

Proper Installation Of Diaphragm, Gaskets, Needle On Rebuild

During a Homelite string trimmer carburetor rebuild, how you reinstall the rubber diaphragms, plastic gaskets, and inlet needles is critical for optimal fuel flow and performance.

Here are some best practices to ensure these components align and seal correctly:

  • Lay out parts in order removed and compare new vs. old for any variations.
  • Note original perimeter shape and curvature of old diaphragms before removing.
  • Carefully clean mating surfaces with brake cleaner and compressed air before reassembly.
  • Check needle and seat for wear, replace if tips are damaged or worn out.
  • Install new float valve needle upside down per manufacturer instructions.
  • Confirm float height and angle match the carburetor specifications.
  • Align new gaskets perfectly before tightening screws fully to avoid leaks.
  • Ensure the main jet insert is properly seated and flush with body.
  • Snug reassembly screws down gradually in a criss-cross “X” pattern.
  • Attach fuel lines and return spring securely to inlet fittings.

It’s extremely important to replicate the original diaphragm shape and alignment within the carburetor body. If the flexible edges are distorted or overlap the wrong surfaces, it will cause vacuum leaks resulting in poor fuel delivery.

Gaskets provide the critical seal between metal surfaces. Use only the new ones from your rebuild kit – old gaskets tend to leak if reused. Carefully tighten screws to compress gaskets without over-torquing.

The inlet needle and seat must seal completely when closed to avoid dripping fuel into the engine. A worn tip allows excess fuel through. The upside down install helps ensure proper float operation.

When reinstalling the carburetor onto the engine, check that the insulator block and manifold gaskets are still intact. Replace if frayed or damaged. Loose carb mount bolts can also introduce vacuum leaks.

If the engine won’t start or runs poorly after rebuilding, gently loosen the carburetor screws and check for proper gasket alignment. Then carefully retighten in the proper sequence.

It can take some trial and error getting the float height, inlet needle position, and diaphragm edges aligned just right. But taking your time ensures optimal vacuum and minimal air leaks.

Pro tip – a thin film of neoprene gasket sealant applied to the surfaces during assembly helps minimize any small leaks if not torqued perfectly.

Correctly installing all the small but critical gaskets, diaphragms, seals, and needles is essential to maximize performance from your rebuilt Homelite carburetor.

Methodically following the manufacturer specified assembly steps helps prevent lingering issues with fuel delivery and throttle response.

With everything assembled correctly, your carburetor will provide like-new fuel metering and power when you pull the starter cord.

Adjusting Fuel Mixture Screws During Homelite Carburetor Rebuild

Need Homelite Weed Eater Carburetor Help. 10 Repair Tips For Quick Fixes

What are Fuel Mixture Screws?

How to Adjust the Fuel Mixture

Signs of a Lean or Rich Fuel Mixture

Special Notes for Homelite Carburetors

Additional Carburetor Rebuild Tips

Need Homelite Weed Eater Carburetor Help? 10 Repair Tips For Quick Fixes

Troubleshooting Running Issues After Rebuilding Carburetor

Common Problems After Rebuild

Check for Proper Installation

Adjust Fuel Screw Settings

Check for Vacuum Leaks

Clean Jets and Passages

Check Spark Arrestor Screen

Adjust Carburetor Float Settings

Additional Troubleshooting Tips

Need Homelite Weed Eater Carburetor Help? 10 Repair Tips For Quick Fixes

Maintaining Proper Gas-To-Oil Ratio To Prevent Future Rebuilds

What’s the Correct Fuel Mix Ratio?

Measuring the Proper Oil Amount

Use Only Fresh, Clean Gasoline

Select Quality 2-Stroke Oil

Mix Oil and Gas in Right Order

Need Homelite Weed Eater Carburetor Help. 10 Repair Tips For Quick Fixes

Never Exceed Oil Ratio Recommendations

Mix Small Batches of Fresh Fuel

Keep Fuel Container Clean

Common Gas/Oil Mixing Mistakes

Signs Your Mix is Too Lean

Symptoms of Too Much Oil (Rich Mixture)

Need Homelite Weed Eater Carburetor Help? 10 Repair Tips For Quick Fixes