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Repair Center  How to Fix a 2-Cycle Engine Carburetor

Why Read This Article?

  • Learn how to fix a broken or damaged 2-Cycle engine carburetor
  • Keep your motorized equipment running like new by learning how to fix a carburetor
  • Save time and money compared to repair shops

Article Breakdown

Repair Information:
Difficulty: Moderate
Duration: 30-60 minutes
Frequency: As needed

Preparing the Carburetor
1. Remove the carburetor from the engine
2. Clean the outside of the carburetor
3. Lay out each piece of the carburetor as you disassemble it

Disassembling the Carburetor
1. Remove the metering diaphragm cover

2. Remove the metering diaphragm and gasket
3. Remove the metering lever, needle and spring
4. Remove the metering base
5. Pull out the inlet screen
6. Remove the pump diaphragm and gasket
7. Pull out the jet and o-ring
8. Remove the throttle body

Cleaning the Carburetor

Using Carburetor Cleaner:
1. Spray all the openings and passages of the carburetor
2. Spray the emulsion tube, main jet and bowl
3. Dry well

Using an Ultrasonic Cleaner:
1. Turn the ultrasonic cleaner on
2. Drop the pieces you want to clean into the water
3. Set the amount of time
4. Run 2-3 cycles in this cleaner
5. Use compressor air to dry the carburetor and parts

Reassembling the Carburetor
1. Connect the throttle body to the carburetor
2. Clean and install the jet and o-ring
3. Install the pump diaphragm and gasket
4. Install the inlet screen
5. Put together the metering needle assembly
6. Install the metering needle assembly
7. Install the metering base onto the pump diaphragm
8. Install the metering diaphragm and gasket
9. Install the metering diaphragm cover
10. Reinstall the carburetor to your products engine

Video

Tools & Materials

  • Phillips-head screwdriver
  • Metal pick
  • Carburetor cleaner
  • Ultrasonic cleaner (optional)
  • Carburetor repair kit

How to Fix a 2-Cycle Engine Carburetor

December 16, 2013
This article will walk you step-by-step through the process of repairing a 2-Cycle carburetor.

Knowing the symptoms of a broken or damaged carburetor can help you get the most out of any motorized equipment. So, when it comes time to actually repair the carburetor, you may need a bit of direction. We're happy to tell you that we've performed this step-by-step repair for you, and have the pictures to prove it. If you need a bit of help repairing your 2-cycle engine carburetor, this article will help you through it.

 

Shop for carburetor repair kits here!

 

Preparing the Carburetor for Repair

1. Remove the carburetor from the engine

If you're not sure how to do this, search for your model number in the Repair Center for specific instructions.

2. Clean the outside of the carburetor

Spray the outside of the carburetor with carburetor cleaner to keep it as clean as possible through the repair process.

 

3. Lay out each piece of the carburetor as you disassemble it

This helps to remember the order of the parts for reassembly.

 

 

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Disassembling the Carburetor

1. Remove the metering diaphragm cover

Use a screwdriver to remove the four screws on the diaphragm cover and set the cover neatly aside.

 

2. Remove the metering diaphragm and gasket

 Peel off the diaphragm and the diaphragm gasket from the carburetor with your fingers.

 

3. Remove the metering lever, needle and spring

Use a screwdriver to carefully remove the screw while holding your finger over the assembly to avoid it from flying away.

 

4. Remove the metering base

This will simply separate from the rest of the carburetor.

 

5. Pull out the inlet screen

Use a small pick to pull the inlet screen out of the metering base.

 

6. Remove the pump diaphragm and gasket

Use your fingers to peel both the pump diaphragm and pump diaphragm gasket off of the carburetor.

 

7. Pull out the jet and o-ring

Use the pick to pull out the jet and o-ring from the carburetor.

 

8. Remove the throttle body

First, back off the idle screw about half-way with a screwdriver -- this gives you access to the other screw under the throttle body.

 

Then remove the screw under the throttle body and set them aside.

 

 

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Cleaning the Carburetor

 

Using Carburetor Cleaner:

1. Spray all the openings and passages of the carburetor

 

2. Spray the emulsion tube, main jet and bowl

 

3. Dry well

 

Using an Ultrasonic Cleaner:

1. Turn the ultrasonic cleaner on

 

2. Drop the pieces you want to clean into the water

 

3. Set the amount of time

 

4. Run 2-3 cycles in this cleaner

 

5. Use compressor air to dry the carburetor and parts

 

 

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Reassembling the Carburetor

1. Connect the throttle body to the carburetor

First, slide the throttle body into the carburetor.

 

Then secure it with the two screws that were removed earlier.

 

2. Clean and install the jet and o-ring

Quickly spray some carburetor cleaner through the jet.

 

Then place the o-ring back onto the jet and press it back into the carburetor.

 

3. Install the pump diaphragm and gasket

Set the pump diaphragm gasket onto the carburetor.

 

Then place the pump diaphragm over this gasket.

 

4. Install the inlet screen

Use an object like a Sharpie to press the inlet screen back into position.

 

5. Put together the metering needle assembly

This contains the hinge pin, needle and spring. Place the hinge pin into the lever, place the needle onto the end of the lever and set the spring into the base.

 

6. Install the metering needle assembly

With the metering needle assembled, drop the assembly into the carburetor and secure with the screw.

 

7. Install the metering base onto the pump diaphragm

Set the base onto the pump diaphragm.

 

8. Install the metering diaphragm and gasket

Install the metering gasket onto the base followed by the metering diaphragm.

 

9. Install the metering diaphragm cover

Replace this cover over the diaphragm and secure it with the four screws.

 

10. Reinstall the carburetor to your products engine

Not sure how to do this? Search our repair center for a guide!

 

 

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Conclusion

It's just that easy to fix up your 2-cycle carburetor. Whether you're just trying to make your motor run more efficiently, or if you're trying to get your product to run again, this article should have everything you need. Not only will performing this repair keep your equipment running like new, it'll also give you skills that you can retain for the future. Saving money has never been so easy!

If you need parts for any of your motorized equipment, we've got that too!

 

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