Snapper Lawn Mower Won’t Start

Why Your Snapper Lawn Mower Won’t Start

It is a pleasant time of the year to be outside enjoying the sun and the fresh air with your family, friends, and neighbors as spring and summer approach. After pulling the starter rope on your Snapper® mower to start it, you find that it will not start. This is despite the fact that you are planning backyard barbecues, pool parties, and yard games. There are plenty of simple fixes that may help you fix the issue within the next couple of minutes, so don’t let frustration get the best of you.

It is easy for a novice to repair the engines on Snapper riding mowers because they use Briggs & Stratton engines. If the engine is an electric start, it must have four things in order to work properly: spark, gas, air, and a fully charged battery. With a few common tools, as well as a battery tester and charger, you can troubleshoot and fix your Snapper riding lawnmower yourself and avoid a large mechanic bill.

Note: Before repairing or maintaining your lawn mower, Snapper recommends checking your operator manual. 

Few Reasons Your Snapper Lawn Mower Won’t Start

Fuel tank empty on Snapper 

Don’t forget to check your fuel tank in the heat of the moment. You should check your starting problem for other causes before proceeding.

Result

Make sure that the gas you use for your Snapper lawn mower is 87 octane or higher. The ethanol content of the gas is no higher than 10%. If you want to know more about the correct setting for your lawn mower, you can read about it here.

Battery that is faulty

Your Snapper lawn mower may not start due to a faulty battery, which is the main cause of your lawn mower not starting. 

Result

I would recommend turning on the battery tester as soon as possible. Make sure the battery is set to 6-volts, since small engines require batteries that are 6-volts in order to operate. The mower’s seat needs to be pulled back so that the battery located below it can be accessed. Using the red probe on the tester, you should take the red probe and touch it to the positive post on the battery. Using the black probe on the tester, touch the dark point on the battery to the dark point on the tester. In order to determine the voltage, you will need to check the meter between 5 and 6 volts. A battery charger with a 6-volt output will be needed if the battery does not charge after it has been discharged. 

Problems with mower carburetors

Carburetor problems are another problem that commonly plagues lawnmowers’ small engines, along with fuel problems.

What is the status of the lawn mower engine? Is it flooded?

The most reliable way to judge something is sometimes to use your nose. The odor of unburned gas will be present in the exhaust of an engine that has become flooded. Wait about 15 minutes for the gas in the mower to evaporate. Once you park it on a flat surface, you should see that the gas has evaporated. If your Snapper lawn mower is not starting again after using the choke off, you might want to try it again.

Problems with your lawnmower’s ignition

What are the chances of the lawn mower spark plug getting faulty?

It is critical to change spark plugs, oil and air filters regularly, because they are easy to replace and relatively inexpensive. Clean the contact surface of the spark plug or replace the spark plug after you have removed it.

A Snapper lawn mower dealer in your area or Briggs & Stratton’s online parts store are the right places to buy new spark plugs for your yard tractors.

Could it be that the spark plug lead has a problem?

It is extremely critical to first test the lead with a spark tester, and then to test the lawn mower engine as well.

Fuel pump problem with Snapper 

If the carburetor is located higher than the fuel tank on the mower, then a fuel pump is used to deliver fuel to the carburetor. For fuel to be pumped from the fuel tank, it has to be pumped up to the carburetor through a fuel pump.

A pump can fail over time because the pump components can deteriorate over time due to the presence of old fuel sat in the pump.

Result

If you are experiencing problems with your fuel pump, first check to see if there are any cracks in your vacuum fuel pump. A fuel pump will no longer be able to pump fuel if there are fuel leaks outside the fuel pump or cracks within the pump. This means that the pump is no longer able to generate the pressure that is required.

If your mower has a fuel shutoff valve, or if your mower comes with clamps to further control fuel flow, you can use them to control fuel flow by stopping and starting the flow of fuel. Ensure the flow of fuel to the pump is stopped and started on a regular basis.

If you have verified that your pump is receiving fuel, then you should look at whether the fuel is being pumped out of the pump in a steady or pulsating flow by removing the fuel line from your carburetor and storing it in a container until you are ready to continue.

This is a flywheel key for a Snapper lawnmower

A flywheel key that has sheared in half might be the cause of the generator engine not starting. An alloy flywheel key is a small, cylindrical metal piece that is used to engage the flywheel with the crankshaft. A flywheel key can break in half if the generator engine stops abruptly, which could lead to the failure of the generator.

Result

The flywheel key must be removed from the engine in order to inspect it. If the flywheel key seems to be broken, the flywheel must be replaced. Whenever there is a problem with the flywheel key, it needs to be replaced. 

There is a blockage in the fuel line of the Snapper

When dirt and old gasoline are left behind in the fuel line of a Snapper mower, it is possible for the fuel line to get clogged. Your carburetor and engine will not be able to receive fuel if this is done.

Result

The fuel line should be removed, then carb cleaner should be sprayed into the tube, and then compressed air should be used to force air into the tube. This will enable the air to clean the line of dirt and gummy residue. The fuel line can also be replaced with a brand-new one if it is damaged. 

Intense blade in Snapper mowers

A spark plug receives voltage from the ignition coil when the engine is running in order to ignite the spark plug. An engine that is difficult to start could be caused by a faulty ignition coil.

Result

Make sure the spark plug is in full working order before you replace the ignition coil. The next step should be to test the ignition coil with an ignition coil tester after you have confirmed that the spark plug is functioning properly. Ignition coils need to be replaced if they are defective.

In Summary/Conclusion

When you own a lawn mower long enough, you will start running into issues where it either won’t start, won’t run, smokes, leaks gas, cuts badly, vibrates, or any combination of these problems.

There is a guide I have written to help you troubleshoot problems that may happen with your Snapper mower, in order to save you time and money. I hope you find it useful.

After checking your Snapper Lawn Mower Won’t Start oil, gas, carburetor, and spark plugs, if it still doesn’t start after checking all of these things, it might be a serious issue with your lawn mower. A Snapper mower dealer with expertise in troubleshooting and providing expert service will be able to assist you.

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