6.75 Briggs And Stratton Motor Won't Start

6.75 Briggs And Stratton Motor Won’t Start: Troubleshooting Tips

The Briggs and Stratton motor won’t start because it may have a faulty ignition system or a clogged carburetor. If you’re facing difficulty starting your Briggs and Stratton motor, there could be a few reasons behind it.

One common issue is a faulty ignition system, which can prevent the motor from firing up. Another possible cause could be a clogged carburetor, restricting the flow of fuel to the engine. In this case, cleaning or replacing the carburetor may solve the problem.

It’s also essential to check if the spark plug is in good condition and properly connected. Additionally, ensure that there is sufficient fuel in the tank. By troubleshooting these components, you can diagnose and fix the starting issue with your Briggs and Stratton motor.

Table of Contents

Check The Fuel System

Check the fuel system of your 6. 75 Briggs and Stratton motor if it won’t start. Ensure there are no blockages or damaged components that might be preventing fuel flow.

When your 6. 75 Briggs and Stratton motor won’t start, it’s essential to inspect the fuel system. The fuel system plays a crucial role in providing the engine with the necessary fuel to ignite and run smoothly. By checking the fuel tank, fuel valve, fuel filter, and carburetor, you can identify and resolve any issues preventing your motor from starting.

Inspect The Fuel Tank For Proper Fuel Level:

  • Ensure that the fuel tank has an adequate amount of fuel.
  • A low fuel level could be the reason why the motor won’t start.
  • It’s essential to maintain a sufficient fuel level to provide a steady flow of fuel to the engine.

Verify That The Fuel Valve Is Open:

  • Check if the fuel valve, located near the fuel tank, is in the open position.
  • If it’s closed, fuel flow to the engine will be restricted, resulting in starting issues.
  • Make sure the fuel valve is open to allow fuel to reach the carburetor.

Examine The Fuel Filter For Clogs Or Blockages:

  • Inspect the fuel filter, which is responsible for catching debris and impurities in the fuel.
  • A clogged or blocked filter can prevent the fuel from reaching the carburetor.
  • If you notice any clogs or blockages in the fuel filter, clean or replace it accordingly.

Ensure The Carburetor Is Functioning Correctly:

  • The carburetor mixes air and fuel to create the combustible mixture needed for the engine.
  • If the carburetor is not functioning properly, it can disrupt the fuel delivery process, causing starting issues.
  • Check if the carburetor is clean and free from any buildup or blockages.
  • If necessary, clean or repair the carburetor to ensure it’s functioning correctly.

By thoroughly inspecting and addressing any fuel system-related issues, you can increase the chances of your 6. 75 Briggs and Stratton motor starting successfully.

Assess The Ignition System

To troubleshoot a Briggs and Stratton motor that won’t start, start by assessing the ignition system.

Check the spark plug, ignition coil, and wiring connections for any issues that may be preventing the engine from firing up.

When your 6. 75 Briggs and Stratton motor won’t start, the ignition system should be one of the first components to inspect.

Here are some steps to assess the ignition system and get your motor up and running smoothly.

Check The Spark Plug For Fouling Or Damage:

  • Inspect the spark plug for signs of fouling, such as carbon deposits or oil buildup.
  • Look for any physical damage, such as a cracked porcelain insulator or bent electrode.
  • Make sure the spark plug gap is within the manufacturer’s recommended range.

Clean Or Replace The Spark Plug If Necessary:

  • If the spark plug is fouled, you can try cleaning it using a wire brush and a solvent specifically designed for spark plug cleaning.
  • If cleaning doesn’t improve the spark plug’s performance, it’s best to replace it with a new one. Follow the manufacturer’s specifications for the correct spark plug type.

Inspect The Ignition Coil For Any Issues:

  • Check the ignition coil visually for any signs of physical damage, such as cracks or corrosion.
  • Ensure that all wires and connections to the ignition coil are secure and free from corrosion.
  • If you suspect a faulty ignition coil, consider using a multimeter to test its resistance and compare the readings to the manufacturer’s specifications.

Test The Spark Plug Wire For Proper Connection And Continuity:

  • Make sure the spark plug wire is securely attached to both the spark plug and the ignition coil.
  • Inspect the wire for any signs of wear, such as fraying or cracking.
  • To test for continuity, use a multimeter to check if there is a continuous flow of electricity through the spark plug wire.

Verify The Air Intake And Exhaust Systems

To get your 6. 75 Briggs and Stratton motor running, start by checking the air intake and exhaust systems for any blockages or damage.

Ensuring these are functioning properly can help troubleshoot why your engine won’t start.

Clean or replace the air filter if dirty:

  • A dirty air filter can restrict airflow, leading to a lean fuel mixture and difficulty starting the motor.
  • Remove the air filter cover and clean the filter with compressed air or replace it if excessively dirty or damaged.
  • Make sure the air filter is seated properly in its housing before reinstalling the cover.

Ensure the air intake is free from debris or obstructions:

  • Obstructed air passages can prevent sufficient air from entering the combustion chamber, resulting in a poor air-to-fuel ratio.
  • Inspect the air intake area and remove any leaves, grass, or other debris that may be blocking the passage.
  • Use a soft-bristle brush or compressed air to clean any accumulated dirt or debris from the intake vents.

Check the muffler and exhaust system for blockages:

  • A blocked muffler or exhaust system can cause backpressure, hindering the motor’s ability to expel exhaust gases effectively.
  • Inspect the muffler outlet and exhaust pipe for any visible obstructions such as dirt, carbon buildup, or debris.
  • Clean the muffler and exhaust system using a wire brush or other suitable tool to remove any blockages.

Verify that the exhaust valve is functioning properly:

  • A malfunctioning or stuck exhaust valve can disrupt the exhaust flow and affect engine performance.
  • Start by removing the spark plug and inspecting the valve mechanism.
  • Ensure that the exhaust valve moves freely and smoothly when operated manually.
  • If the valve appears damaged or doesn’t function correctly, it may require professional repair or replacement.

By thoroughly examining and addressing any issues with the air intake and exhaust systems, you can eliminate potential causes for your Briggs and Stratton motor’s failure to start.

Examine The Engine Compression

To diagnose the starting issue with your 6. 75 Briggs and Stratton motor, examine the engine compression.

Ensure the compression levels are within the manufacturer’s recommended range for proper engine function.

Perform A Compression Test To Check For Any Leakage:

  • Start by removing the spark plug from the engine.
  • Attach a compression gauge to the spark plug hole.
  • Slowly pull the starter rope to crank the engine a few times.
  • Observe the compression reading on the gauge. It should be within the manufacturer’s recommended range.
  • If the compression reading is too low or uneven, there may be a leakage issue in the engine.
  • To further diagnose the problem, you can perform a wet and dry compression test. This involves adding a small amount of oil to the cylinder and testing the compression again. If the compression improves with the wet test, it indicates worn piston rings, while no change suggests valve-related issues.

Identify Any Potential Issues With The Piston Or Cylinder:

  • Inspect the piston for any signs of damage, such as cracks or scoring. Any abnormalities could affect the engine’s compression.
  • Check the cylinder walls for scratches or wear. Smooth and even cylinder walls are essential for proper compression.
  • If you notice any issues with the piston or cylinder, it may be necessary to repair or replace these components to restore optimal compression.

Inspect The Valves For Proper Seating And Operation:

  • Remove the valve cover to access the valves.
  • Visually inspect the valves for any signs of damage or wear.
  • Check if the valves are seating properly by using a feeler gauge. Insert the gauge between the valve and the valve seat to ensure the correct gap.
  • If there is excessive clearance or if the valves fail to seat properly, adjustments or valve replacements may be required.

Diagnose The Engine Mechanical Components

To diagnose the mechanical components of a 6. 75 Briggs and Stratton motor that won’t start, you need to inspect the spark plug, fuel system, and air filter.

Check for any signs of damage or blockage and clean or replace parts as needed to ensure optimal performance.

Here’s how to get started:

Check The Flywheel Key For Shearing Or Damage:

  • Inspect the flywheel key, which connects the flywheel to the crankshaft, for any signs of shearing or damage.
  • Look for visible cracks, chips, or any other irregularities in the flywheel key that could prevent the engine from starting.
  • If the flywheel key is sheared or damaged, it will need to be replaced to ensure proper engine performance.

Examine The Recoil Starter For Any Defects:

  • Take a closer look at the recoil starter, the mechanism responsible for pulling the engine’s crankshaft to start the motor.
  • Check for any visible defects, such as a broken cord or a worn-out recoil spring, that could prevent the motor from starting.
  • If you notice any issues with the recoil starter, repairs or replacements may be necessary to restore proper functionality.

Inspect The Engine Internal Components For Wear Or Damage:

  • Open up the engine housing to inspect its internal components, such as the piston, cylinder, valves, and connecting rod.
  • Look for any signs of wear, damage, or buildup of debris that could be impacting the engine’s ability to start.
  • Pay close attention to the piston rings and valve seals, as worn or damaged rings can cause compression loss, resulting in a no-start situation.
  • If you notice any issues with the internal components, it’s recommended to seek professional assistance or consult the engine’s user manual for further guidance.

Other Troubleshooting Tips

If your 6. 75 Briggs and Stratton motor won’t start, try these troubleshooting tips to get it up and running again.

Check the fuel, spark plug, air filter, and carburetor for any issues that may be preventing the engine from starting.

If you’re dealing with a Briggs and Stratton motor that won’t start, there are a few other troubleshooting tips you can try before giving up.

Below, you’ll find some simple steps to help you identify and resolve the issue:

Verify That The Engine Oil Level Is Adequate

  • Check the oil level in your Briggs and Stratton motor. Insufficient oil can prevent the engine from starting properly.
  • If the oil level is low, add the recommended amount of oil specified in the engine’s manual. This will ensure smooth operation and help prevent potential damage.

Check The Throttle And Choke Settings For Proper Operation

  • Ensure that the throttle and choke settings on your motor are properly adjusted. If these settings are off, it can affect the engine’s ability to start. Make sure the throttle is set to the appropriate position, usually marked as “Start” or “Run,” and adjust the choke accordingly. Refer to the engine’s manual for specific instructions on adjusting these settings.

Remove Any Excess Dirt Or Debris From The Engine

  • Over time, dirt and debris can accumulate in and around the engine, inhibiting its performance. Take a moment to inspect and clean the engine, removing any visible dirt or debris. An engine free of obstructions is more likely to start smoothly and run effectively.

Consult The Engine Manual For Additional Troubleshooting Steps

  • If the above steps haven’t resolved the issue, consult the engine’s manual for further troubleshooting guidance. Each engine model may have specific troubleshooting steps and recommendations. The manual can provide valuable information on diagnosing and resolving common problems. Consider referring to it for additional steps and guidance specific to your Briggs and Stratton motor.

Frequently Asked Questions

How Do I Troubleshoot A Briggs And Stratton Motor That Won't Start?

To troubleshoot a Briggs and Stratton motor that won’t start, first check the fuel level and quality, make sure the spark plug is clean and functioning, check the air filter for blockages, and examine the carburetor for clogs. If these steps don’t solve the issue, consider checking the ignition system or contacting a professional for assistance.

Why Is My Briggs And Stratton Motor Failing To Start?

There are several reasons why a Briggs and Stratton motor may fail to start. It could be due to a lack of fuel, a dirty or malfunctioning spark plug, a clogged air filter, or a problem with the carburetor or ignition system.

Make sure to carefully inspect and troubleshoot these components to determine the cause and resolve the issue.

What Should I Do If My Briggs And Stratton Motor Won't Start After Sitting Idle For A Long Time?

If your Briggs and Stratton motor won’t start after sitting idle for a long time, first check the fuel and oil levels. Drain and replace any old or stale fuel and oil. Clean or replace the spark plug, air filter, and carburetor if necessary.

You may also need to use a fuel stabilizer or consider contacting a professional for assistance.


To troubleshoot a 6. 75 Briggs and Stratton motor that won’t start, it is crucial to follow a step-by-step approach. Begin by checking the fuel levels, ensuring there is enough gasoline in the tank. Next, assess the spark plug, examining it for any signs of damage or wear and replacing it if necessary.

Additionally, inspect the air filter and clean or replace it if it appears dirty or clogged. Another potential culprit could be a clogged carburetor, which may require cleaning or adjustment. Lastly, consider the engine’s oil level, ensuring it is neither too high nor too low.

By carefully reviewing and addressing these key areas, you will increase the chance of resolving any starting issues with your Briggs and Stratton motor. With proper maintenance and care, your motor will be up and running smoothly, ready to tackle any task at hand.

Similar Posts

Leave a Reply

Your email address will not be published. Required fields are marked *