Difficulty

Moderate

Steps

8

Time Required

                          1 - 2 hours

Sections

1

  • How to Rebuild a Briggs and Stratton Quantum Engine Carburetor
  • 8 steps

Flags

4

Inconsistent Images

Updating the images on this guide to be more consistent with the prerequisites would increase its awesomeness.

Confusing Text

Some of this guide’s text is confusing, duplicated, or off-topic. Clarify it by editing!

Needs Better Images

Better photos will improve this guide. Help out by taking, editing, or uploading new ones!

Better Introduction

Improve this guide by completing or revising its introduction.

  • BackEngine

  • Full Screen

  • Options

  • History

  • Save to Favorites

  • Download PDF

  • Edit

  • Translate

  • Get Shareable Link

  • Embed This Guide

  • Notify Me of Changes

  • Stop Notifications

Introduction

This engine can be found on push mowers, log splitters, tillers, leaf vacs, leaf blowers, tractors, and more. It is applicable to 4.5-8 horsepower engines. A carburetor rebuild is required after fuel is left in a mower over a long period of time or water has gotten into the fuel.

What you need

Step 1

              Remove the Air Filter Cover
  • Remove the air filter cover and air filter. This is done by removing the screw at the top of the filter housing.
  • The screw itself is a flat head, as well as a 5/16 socket.

Remove the air filter cover and air filter. This is done by removing the screw at the top of the filter housing.

The screw itself is a flat head, as well as a 5/16 socket.

1024

Step 2

              Remove the throttle Cable
  • Some engines may be equipped with a throttle cable. Use a flathead screwdriver to remove the cable.
  • If your engine is not equipped with a throttle, skip this step.

Some engines may be equipped with a throttle cable. Use a flathead screwdriver to remove the cable.

If your engine is not equipped with a throttle, skip this step.

Step 3

  • Remove the fuel line clamp with pliers. Crimp the line with locking pliers, or bend to 180 degrees to crimp the fuel line.
  • If the fuel in the tank contains water, or is extremely old, drain it into a container and dispose of it properly.

Remove the fuel line clamp with pliers. Crimp the line with locking pliers, or bend to 180 degrees to crimp the fuel line.

If the fuel in the tank contains water, or is extremely old, drain it into a container and dispose of it properly.

Step 4

  • To remove the carb, use a 3/8 socket with extension and ratchet.
  • Turn the carb 90 degrees, and pull off of the Z bend in the carb linkage.
  • Drain the fuel into a container, and dispose of properly.

To remove the carb, use a 3/8 socket with extension and ratchet.

Turn the carb 90 degrees, and pull off of the Z bend in the carb linkage.

Drain the fuel into a container, and dispose of properly.

Step 5

  • After the removal of the carb. the next step is to remove the carb bowl. This requires a 1/2 socket, and ratchet.
  • After removal, empty the leftover fuel into a container.

After the removal of the carb. the next step is to remove the carb bowl. This requires a 1/2 socket, and ratchet.

After removal, empty the leftover fuel into a container.

Step 6

  • Spray the carb out with carb cleaner. After sprayng the carb off, remove the float pin. This will result in the float and needle being able to be pulled off as a whole.
  • This is not a carb cleaning, this is just a general rinse off.

Spray the carb out with carb cleaner. After sprayng the carb off, remove the float pin. This will result in the float and needle being able to be pulled off as a whole.

This is not a carb cleaning, this is just a general rinse off.

Step 7

  • These are the three major spots to spray out. If carb spray does not pass through, take a small piece of wire, and poke it through all the passages. Then spray out with carb cleaner again.

These are the three major spots to spray out. If carb spray does not pass through, take a small piece of wire, and poke it through all the passages. Then spray out with carb cleaner again.

Step 8

  • Finally, after all parts are clean and sprayed off, lay them out to ensure you are ready to reassemble.

Finally, after all parts are clean and sprayed off, lay them out to ensure you are ready to reassemble.

To reassemble your device, follow these instructions in reverse order.

Cancel: I did not complete this guide.

Author

                                      with 3 other contributors 


                    Matthew Dunham

Member since: 03/24/2021

157 Reputation

                                      1 Guide authored                  



                       Badges:
                       2

Team

                       UMass Dartmouth, Team S6-G8, Riel Spring 2021                        

                                                  Member of UMass Dartmouth, Team S6-G8, Riel Spring 2021 



                    UMASSD-RIEL-S21S6G8                     


                                            1 Member                     


                                            1 Guide authored