Difficulty

Moderate

Steps

7

Time Required

                          15 - 30 minutes

Sections

1

  • How to clean and maintain your Briggs and Stratton 675 Series Carburetor
  • 7 steps

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Slice and Dice

The steps in this guide should be split up and made into a series of prerequisite guides.

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Introduction

What you need

Step 1

              How to clean and maintain your Briggs and Stratton 675 Series Carburetor
  • Make sure the the engine is off and the spark plug wire is removed and away from the spark plug before beginning.
  • Use a Flathead #4 screw driver to remove the 40mm screw that holds the air filter case in place.

Make sure the the engine is off and the spark plug wire is removed and away from the spark plug before beginning.

Use a Flathead #4 screw driver to remove the 40mm screw that holds the air filter case in place.

1024

Step 2

  • Use your hands to pull the air filter case out of the hinge at the bottom.

Use your hands to pull the air filter case out of the hinge at the bottom.

Step 3

  • Use a socket wrench with a 5/16" hex bit to remove three 20mm bolts behind the air filter.
  • Use your hand to remove the plastic backing to the air filter, exposing the carburetor.

Use a socket wrench with a 5/16" hex bit to remove three 20mm bolts behind the air filter.

Use your hand to remove the plastic backing to the air filter, exposing the carburetor.

Step 4

  • Note: There is a plastic washer that may come off when you take off the plastic backing. This is normal; just set it aside and save it for reassembly.

Note: There is a plastic washer that may come off when you take off the plastic backing. This is normal; just set it aside and save it for reassembly.

Step 5

  • Use a socket wrench with a ½" hex bit to remove 11mm screw on the bottom of the tank.

Use a socket wrench with a ½" hex bit to remove 11mm screw on the bottom of the tank.

Step 6

  • Once the bolt is removed from the bottom of the carburetor tank, gently pry open the tank with a metal prying spudger until it pops off. If you do not have a spudger, a flathead screwdriver will work.
  • Completely remove the tank so you can clean it or replace it.

Once the bolt is removed from the bottom of the carburetor tank, gently pry open the tank with a metal prying spudger until it pops off. If you do not have a spudger, a flathead screwdriver will work.

Completely remove the tank so you can clean it or replace it.

Step 7

  • Inspect the O-ring inside the carburetor tank. If it is dry and worn out, you may need to replace the O-ring before you reassemble your device.

Inspect the O-ring inside the carburetor tank. If it is dry and worn out, you may need to replace the O-ring before you reassemble your device.

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

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Author

                                      with 5 other contributors 


                    Tim Wirtz

Member since: 01/30/2015

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                       Cal Poly, Team 6-31, Amido Winter 2015                        

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                                            13 Guides authored

Jerry - Apr 1, 2017

Reply

I just performed a carb tank cleaning based on your DIY and it took less than 30 minutes! The best part of the cleaning was an immediate start of my mower on the first pull. Thanks

Tania Miller - Apr 24, 2017

Reply

Nice guide. My mower was only running on choke, any other throttle setting and it would die. A quick online search indicated dirty carburetor and subsequently I found your guide. Gave everything a good clean and voila! Good as new.

jim steinberg - Apr 28, 2017

Reply

Slide clamp on fuel line back and pull fuel line off carb. plug line with old pen/pencil

Remove two nuts holding carb onto engine. Remove nut holding engine choke arm on top of carb. Then remove two springs and one carb adjust metal arm. Note places of attachment

spray cleaner in all brass jets, use fine wire to clean out all orifices, clean bowl attachment nut. Spray cleaner in to choke area and tip upside down and spray under the bowl needle.

drain old gas out of tank and alternatively add a in line fuel filter as well a new air filter.

clean or repl spark plug

Charlie Farrell - Aug 17, 2017

Excellent suggestions, as well.

kevin - Aug 19, 2017

yes, this is a better guide for cleaning. the other should be called “how to inspect your carb O-ring”