Gas String Trimmer Maintenance

Every equipment has the ability perform extremely well and last for a lot of years. However, they cannot do this alone. As an operator, it is your task to keep them in a good condition to help them reach their full potential.

For this reason, we have prepared a guide to the best way to maintain gas trimmers. In this guide, you will learn how to clean your trimmer, replace trimmer line, and  perform minor repairs.

Maintenance Preparation

Before performing any maintenance procedure, it is vital that an individual understands how important preparation fundamentals are in line with maintenance execution. This helps create a safe environment whilst performing repairs and other maintenance practices.

  • Workspace Preparation

    Ideally, you should opt for a well-ventilated flat area away from any combustible materials. Keep a safe distance of 10 feet or more from anything flammable. It is also a great idea to spread a cloth over your working space, so that you’ll have an easier time cleaning up after.
  • Personal Protective Equipment

    Wearing of protective equipment is not only done while operating your gas string trimmer, it’s also a practice that should be exercised even when performing maintenance procedures. In this way, you can avoid fatally injuring yourself while working on your trimmer.

    Below is a list of some protective gears you should consider wearing:

    • Gloves

      To protect your hands, wear heavy-duty work gloves made of leather or other wear-resistant material.
    •  Leg Protection

      Make sure to wear heavy trousers or long pants that are made of heavy materials to protect your legs.
    • Protective Boots

      Avoid wearing sandals or slippers when handling a brush cutter. To protect your feet from any injuries, wear safety boots.
  • Engine Preparation

    Always drain your fuel tank before working on your string trimmer. This is to avoid oil or gas from leaking all throughout your work area. And, remember to never work on your trimmer without making sure that the engine is completely turned off. To do this, disconnect the spark plug wire from the spark plug. This will help prevent your equipment from accidentally starting up.


Maintenance Procedures

Replacing the Trimmer Line

Eventually, you will be needing to replace your trimmer line at some point. There are several ways to do this, but the general procedure of winding a new line on your spool can be seen below.

Step 1: Take out the empty spool from the string trimmer cutting head.

Step 2: Thread the end of the line into the hole in the spool.

Step 3: Wind the line tightly around the spool in the direction of the arrow.

Step 4: Leave an excess length before the other end of the line. .

Step 5: Place the spool back in the string trimmer.

Step 6: Feed the other end of the line into the hole in the cutting head.

Step 7: Place the cap to cover the spool.

Tip: To prevent the line from being loosely winded, tug on the line as you wind it.. This will help create tension on the string to be tightly wound around the spool.

Replacing the Air Filter

A clean air filter is necessary for your trimmer to perform well. That’s why, it is important to keep it clean and in good condition. However, most air filters are not reusable, so you will need to replace it once damaged or darkened in color.

Reusable ones though are guaranteed to have a longer lifespan. This means that it will get by after you clean it thoroughly. Nevertheless, even reusable ones are recommended to be replaced when damaged.

Step 1: Make sure that the engine is turned off.

Step 2: Remove the air filter cover to get to the air filter chamber.

Step 3: Remove the air filter for inspection.

Step 4: Inspect the filter for any dust, debris, or damage.

Step 5: If damaged or considerably worn out, replace the air filter with a new one.

Step 6: Install the new air filter into the chamber and re-attach the air filter cover.

Replacing the Spark Plug

The spark plug plays a vital role in starting the engine of your trimmer. A dirty or damaged one may make the trimmer extremely difficult to start. Not to mention, it also affects the performance of your string trimmer while operating. To prevent start-up mishaps and poor performance, make sure that the spark plug is always in a good condition.

Step 1:  Remove the spark plug cover, boot, and wire.

Step 2: Clean the surrounding area of the spark plug using a cloth.

Step 3: Use a socket wrench or a spark plug wrench to loosen and remove the spark plug.

Step 4: Inspect the spark plug for dirt and damages. The tip should be intact and gray.

Step 5: If the spark plug is dirty, you can conveniently clean it using a cloth.

Step 6: If worn out or severely damaged, replace spark plug with an approved replacement.

Step 7: Check the gap distance at the end of the spark plug. Use a gap tool or feeler gauge.

Step 8: Adjust the gap distance if necessary.

Step 9: Install the spark plug and tighten it using the wrench. Do not overly tighten it.

Step 10: Reconnect the spark plug cover, boot, and wire.

Storage Procedure

Unbeknownst to everyone, proper storage is also a big part of string trimmer maintenance. It is important that you know how to correctly store your trimmer to ensure that it will be kept in a good condition, especially if it will be stowed away for a lengthy period of time.

Below is a quick guide on how to properly store your trimmer.

Step 1: Drain the fuel tank of your trimmer.

Step 2: Run the engine idly to make sure that all the fuel is used up.

Step 3: Clean the entire equipment thoroughly.

Step 4: After cleaning, make sure to dry the string trimmer properly.

Step 5: Safely store the trimmer away from the reach of children.

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