Top 10 Causes of a Dead Honda String Trimmer

If your string trimmer suddenly stops working, you should try to fix it before buying a replacement. It could just be a broken piece of maintenance equipment.

When fuel, air, and spark are insufficient, the Honda string trimmer will start but quickly die.

Possible causes include debris in the carburetor, a clogged fuel filter, a blocked fuel line, a defective ignition coil, a blocked air filter, or a blocked spark arrestor.

If your car won’t start, there are a few additional possible causes detailed below. First, ensure that the string trimmer is completely stalled by removing the spark plug boot.

Honda String TrimmerBefore diagnosing, repairing, or operating, be sure you’ve read and understood all of the safety recommendations in the equipment’s operator’s manual.If you don’t feel confident in your ability to conduct the repair safely due to a lack of experience, training, or health, it’s best to call in an expert.

Top 10 Causes of a Short and Died Honda String Trimmer

Honda String Trimmer with Incorrect Choke Setting

Make sure the choke lever is in the correct place if your Honda string trimmer begins normally but immediately stops working.

When starting a cold engine, the choke is used to reduce airflow and increase fuel injection into the cylinder. Once the engine has warmed up, the choke can be left open to provide the necessary air flow.

Without the proper fuel-to-air ratio, the engine will splutter and die if the choke isn’t adjusted after it has warmed up.

After warming up the engine, ensure sure the choke lever is in the “off” position.

Honda String Trimmer with Attached Air Filter

A clogged air filter can have the same effect as leaving the choke on your Honda, preventing the engine from starting.

An air filter is necessary for your Honda string trimmer to protect the engine from damage caused by dirt and debris. It’s important to keep it in good shape so that dirt can’t get in and air can flow through.

Every year at the start of grass maintenance, you should change the air filter. The filter should be checked and cleaned often during the season.

Never, not even temporarily to get the job done, let your string trimmer run without an air filter. This is dangerous for the engine.

REMEDY: Having the air filter cleaned. If your air filter is really dirty or has been damaged, you should replace it.

Cleanse a Honda FOAM string trimmer air filter:

  • Take the air filter out of its housing.
  • Use water and a mild detergent to clean the foam air filter.
  • Make sure the water coming out of the filter is clear, and then set it aside to dry in the air.
  • When the filter is dry, soak it lightly in filter oil. Remove any surplus oil by squeezing the filter. (Pre-filters should not
  • be oiled)
  • Put the filter back in.
  • Replace the filter’s lid.

When it comes to cleaning different kinds of air filters, it’s best to refer to the manual that came with your equipment.

Using Old Gasoline in a Honda String Trimmer

If you put stale gas in your Honda string trimmer, it could halt or run very slowly. Ethanol, a fuel made from maize, is added to most gasoline to reduce pollution.

Although it’s better for the planet, the smaller engine in your Honda won’t like it. As soon as 30 days after purchase, the gas/ethanol blend can start to deteriorate.

The trimmer is corroded by ethanol and the water it collects. A varnish is left behind that restricts fuel flow to the engine.

The ideal fuel to use is one that has no ethanol, although this fuel is more expensive.

How to Choose Gas for a Honda 4-Cycle String Trimmer:

  • Straight gasoline is necessary for 4-cycle engines. Oil should not be added.
  • Fuel of at least 87 octane is recommended.
  • Ethanol (E10) levels in the gas cannot be more than 10%. Fuels labeled E15 and E85 contain up to 15% and 85% ethanol, respectively, therefore you should steer clear of these.
  • You should use the gas you buy within 30 days.
  • Put in a gasoline stabilizer to let the fuel last a little longer without going bad.

This article on gas and oil for Honda string trimmers will teach you how to pick the right fuel and maintain it properly.

REMEDY: Empty the gas tank of the string trimmer. To stabilize the fuel, remove moisture, and clean the fuel system, fill the tank with new fuel that has been treated with a fuel additive such as Sea Foam Motor Treatment.

For best results, start the trimmer and let it run for 5-10 minutes to distribute the gasoline.

Honda String Trimmer with Blocked Fuel Filter

The fuel filter is there to trap any dirt or debris before they might contaminate the fuel supply. Located inside the gasoline tank and connected to the fuel line is the fuel filter for your Honda string trimmer.

If you’re using unclean fuel, you should replace your fuel filter more frequently than once a year.

If you don’t change the filter regularly, it might become so clogged that not enough fuel can get through, causing your Honda trimmer to sputter or stop working altogether.

Resolved: Have gasoline filter changed. If the fuel is contaminated, you should switch to clean fuel.

Substitute a Honda fuel filter:

  • Remove the fuel cap and wipe the area around it to get rid of any dirt.
  • The gas tank should be emptied into a new container.
  • Place the trimmer in a level position.
  • With the help of a clean, bent wire, remove the fuel filter from the tank. It’s possible that needle-nose pliers might do the trick, too.
  • Pull the filter out of the gasoline line by firmly grasping the fuel line.
  • Replace the old fuel filter with a new one.
  • Reinstall the fuel filter inside the tank.
  • Put in new gas
  • Cover the tank with the gasoline lid.

Honda String Trimmer Fuel Lines Clogged

Deposits left behind by old fuel might cause fuel lines to become stuck. This reduces the pipe’s diameter and, by extension, the fuel flow rate.

When this occurs, the gasoline line must be disconnected and replaced with another fuel line of the same size. If you discover that your fuel line is dry, damaged, or kinked, you will need to get it replaced.

Honda String Trimmer with Blocked Fuel Tank Vent

A vent is necessary for the Honda fuel tank to allow air to circulate. The gasoline tank will develop a vacuum if its vent is blocked. It blocks the fuel from leaving the tank, killing the trimmer.

A clogged fuel tank vent may be to blame if fuel is not reaching the carburetor despite the use of a good filter and the absence of obstructions in the fuel lines.

The pressure in the tank can be checked with a gauge to ensure that sure there is no vacuum. A fuel line pressure gauge is useful, but few people keep one on hand.

If you want to know if your gasoline tank is venting correctly, here’s how to do that.

This easy test might help you determine if your gasoline tank’s vent is working properly.

  • Start the trimmer by releasing air from the fuel cap. Keep the fuel tank sealed at all times.
  • Turn on the car’s ignition and let it idle. It may be a vent issue if it works smoothly and never sputters or dies.
  • To be sure the vent is the source of the problem, you should attempt to recreate the issue.
  • Put the gasoline cap back on securely and start up the string trimmer. The fuel tank vent should be replaced if the vehicle loses power, stalls, and won’t restart unless the fuel cap is loosened.

The gasoline tank is an integral part of the Honda trimmer’s gas cap.

Honda String Trimmer with a Filthy Carburetor

Your Honda string trimmer won’t start until the carburetor is adjusted to the proper air-to-fuel ratio. When the channels get clogged up, the tiny parts stop working properly.

This can lead to an insufficient mixture of fuel and air, which in turn can cause the string trimmer to run poorly or even stop working altogether.

You may try cleaning the carburetor to see if it helps. If cleaning doesn’t fix it, you may need to rebuild it (if rebuild kits are available for your Honda carburetor) or get a new one.

It can be worth buying a new Honda string trimmer instead of spending money on a new carburetor if the two are comparably priced.

You might be better off getting a new string trimmer if your current one is old, expensive, or both.

Dirty Honda String Trimmer Spark Plug

Over time, carbon residue will accumulate on the spark plug, making it less effective. Because of this, the plug may misfire, resulting in sporadic starting issues.

You should also check for a spark plug wire that is too loose, an improper spark plug gap, and cracked porcelain or worn electrodes. Your Honda’s performance may be affected by any of these factors.

A dirty spark plug can be cleaned using a wire brush and perhaps reused. If that’s the case, I recommend getting a new trimmer.

It is a low-cost component that plays a crucial role in ensuring the optimal performance of your string trimmer.

Check that the spark plug wire boot is properly attached and that the distance between the plug and the spark plug is as specified by the manufacturer.

Honda String Trimmer Faulty Ignition Coil

A short can occur if the ignition coil’s winding comes loose. This prevents the necessary voltage from reaching the spark plug, preventing it from igniting. Your Honda will eventually die as a result of this.

The problem can be solved by using an ohmmeter to look for a break in continuity and thus identify a defective ignition coil. If you locate a broken ignition coil, you should get a new one.

Honda String Trimmer with Blocked Spark Arrestor

A tiny metal screen prevents burns and fires from being caused by hot exhaust particles erupting from the string trimmer. Carbon accumulation on this tiny screen will impair the performance of the engine.

The spark plug wire needs to be disconnected. The spark arrestor screen needs to be carefully taken out so any damage may be checked.

Reinstall it if it still functions properly after being cleaned with a wire brush. However, a new spark arrestor screen must be installed if the old one is broken or has a hole in it.

If you are unable to locate the spark arrestor screen or if you are still having issues with your Honda string trimmer, contact your local Honda service shop.