Ways in Troubleshooting Homelite String Trimmers

Homelite string trimmers are types of gardening tool that utilize an engine containing 1 small piston only. Usually, these have displacements which are less than 50 cm3. If you own a gardening tool like the homelite string trimmer, then it you should always know how to troubleshoot it. At least, you can make sure that you will have a proper maintenance of the item that you have.

In order to diagnose some of the non-major problems of an engine, you have to isolate first the problems from the 3 most significant systems. These are the spark, compression and fuel. Through isolating these 3 significant systems into one, you may be able to scrutinize the whole system and check if there are still some other problems that need to be repaired. You may read more product reviews online and explore how you can maintain the quality and longevity of a certain product.

You have to be conscious enough in troubleshooting some essential parts of the string trimmer. For you to explore these fundamental instructions, you may refer to the following tips:


  • Remove the rubberized plug which is connected to spark plug. Then, unscrew the plug spark and get rid of it from its engine. After that’s, you need to replace it with a new one and connect it to the rubber plug again. Do not clasp it up to its engine.
  • Hold the spark plug and rubberized plug using your protective leather gloves. It should be near the metal spot on engine or cylinder block. Tug it on a starter cord in a few times. Then, seek for blue spark along the points.
  • Unscrew the housing of ignition and remove the ground wire form the ignition switch. Then, you may repeat the processes for the test of the spark plug. If there is a spark, you need to replace the flawed ignition switch. On the other hand, if there is a weak yellow or no spark at all, you may check the 2 lead wires and examine if there is any loose connection or damage.
  • Take away the cord starter, cover starter, recoil spring and the pulley. Always check the flywheel key of the string trimmer so as to ensure that it is not damaged or sheared. If necessary, you may also replace its flywheel key.
  • Start testing the tool’s ignition system so that you can have an assurance that the charge has on its full circuit. Then, you may also test its starter coil so as to know if it will have a proper charge. Also, check or verify the distance of the flywheel to the starter.


  • Pull up the string trimmer from the ground through the starter cord. Your compression is said to be low if the weight of the engine pulls out its cord. Any kind of starter cord should not be too easy or too hard to pull.
  • Unscrew the cover muffle and take away the arrestor screen spark from its engine system. You may clean the screen using brush and soapy water. You may also examine the exhaust port and muffler to ensure that there will be no buildups of thick carbon or clogs. If necessary, you m ay also clean then using a brush. Always ensure that the trimmer’s muffler is appropriately connected to the engine system.
  • Take away the cylinder and the muffler from its crankcase. Scrutinize these parts of there are dents or cracks which could be a cause in losing an engine’s compression. Remove the ring of the piston and the whole piston. Then, check these parts if there are damages. Do some polishing procedures to remove the minor scratches. Moreover, you have to replace these compression parts if you found out that there are some deep groves or cracks.
  • Check seals of the crankshaft and the whole crankshaft too to ensure damage-free. If you found out that there’s damage, then you need to replace its engine system or the entire string trimmer.

Fuel System

  • Drain the old gas which has been on the string trimmer. Then, pout the gas into the container. Examine the hole of the vent on the cap so as to ensure that it is not plugged out. If you observed that it is leaking or too dirty, then you need to change the cap in order to restore the pressure on the tank.
  • Remove the filter and its cover. Clean the parts with warm water and let them dry overnight. Change the filter it cannot be cleaned.
  • Unscrew the cover choke plate that sits on top of the carburetor. This is to have an access to the lines of fuel. Disconnect the lines of the return and tank from the elbow connectors. Flip the engine while you are holding it. Then, you have to check if there’s a drop of gas from the engine.
  • Change the fuel line and the fuel filter of there is no gas that comes out from the carburetor. If there’s a gas that comes out from the carburetor, then you need to spray at least 1 second blast of cleaner to the neck of carburetor. Then, switch on the gardening tool and check it functions well.
  • Disassemble the parts of the trimmer and clean its carburetor. Then, you need to test it to ensure positive pressure. If you noticed that that it does not hold pressure, then you have to change the carburetor. However, if it holds pressure, then you just need to reinstall it with carb kit in order to change all the filters, seals, needle valve and Welch plugs.

With these proper procedures of maintenance, you can have an assurance that your weed eater will always functions up to its maximum extent. Just remember how to troubleshoot its main parts and you will have the best outcomes in cleaning your garden.

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