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Repair Parts Home    Power Tool Articles    How to Replace an Echo Trimmer Starter Assembly

Why Read This Article?

  • Brand-specific repair steps.
  • Defective starter repair advice.
  • Video demonstration.

Article Breakdown

Remove the Old Trimmer Starter Asembly

1. Remove the top cover.

2. Remove the starter assembly screws.

3. Pull the starter assembly away.

Install the New Trimmer Starter Assembly

4. Set the new assembly in place.

5. Pull the start cord to engage the starter.

6. Replace the starter assembly screws.

7. Replace the top cover.

Video


Tools & Materials

  • Drivers for your trimmer.
  • A new starter for your Echo trimmer model.

How to Replace an Echo Trimmer Starter Assembly

June 14, 2010
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Every trimmer starter replacement is just a little different, and these are the steps for replacing a starter in Echo brand trimmers, a common parts replacement.

Starters consist of a pulley, a return spring, the starter cord, and a clutch-like system that engages the engine's drive shaft. Any part of a starter assembly can break from normal wear.

Echo brand gas-powered trimmers need their starters replaced occasionally when they break from wear or damage, just like all lawn trimmers. The steps for removing Echo trimmer starters are very similar to the removal steps for other trimmers and we're going to explain them here in this article.

Trimmer Starter Assembly

Starter assemblies are some of the most commonly-replaced parts of small engines, including 2-cycle gas engines. Starter assemblies need to be replaced when the trimmer's starter cord or another component of the assembly breaks or becomes inoperative.

Getting used to performing simple tool repairs like this one can save you hundreds of dollars a year at the shop, and this starter repair takes less than five minutes!

Tools and parts needed:

  • drivers to dismantle your Echo trimmer.
  • a new starter assembly for your Echo trimmer model.

 

Remove the Old Trimmer Starter Asembly

The first steps of this repair involve removing the shrouds and housings around the starter assembly. 

We use a newer Echo trimmer model as our example in this repair, the Echo SRM-225 Straight Shaft Trimmer. Newer Echo trimmers, like the SRM-225 pictured below, have a few more shrouds and screws to remove than the older models. Accessing the starter assembly on an older Echo trimmer may involve as few as four screws.

 

1. Remove the top cover.

No matter how many shrouds, screws and covers an Echo trimmer model has, removing them to access the starter is the first step in this repair. On our example trimmer, its top cover should be removed first.

Remove Top Cover

  • On the SRM-225, the top cover removes after unscrewing two screws.
  • The trimmer's spark plug boot must be removed and threaded through the top cover.
  • The SRM-225 also has two ignition wires that clip onto the top cover. The two ignition wires must be un-clipped from the cover in order to remove it.

 

2. Remove the starter assembly screws.

Six more screws must be removed from the Echo SRM-225 in order to free-up its starter.

Starter Assembly Side Screw

  • Remove the screw on the side of the starter assembly. This screw is only accessible after removing the top cover as in step #1.

Starter Assembly Bottom Screw

  • Unscrew the screw near the trimmer's fuel tank on the bottom of the starter assembly.

Starter Assembly Bottom Screws

  • Remove the four screws on the face of the starter assembly.

 

3. Pull the starter assembly away.

Now that it is freed-up, the starter assembly can be removed from the trimmer.

Remove Starter Assembly

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Install the New Trimmer Starter Assembly

Installing a completely new trimmer starter assembly is actually more practical than replacing its parts. It's true that the entire assembly will cost more than just one of its parts, but it will only cost a little more. 

The real issue is that rebuilding starter assemblies is difficult and time-consuming. Considering the meager savings on parts, it's usually worth it just to replace the whole assembly.

 

4. Set the new assembly in place.

Your new Echo trimmer starter assembly should be ready to install right out of the package.

  • With the shrouds and covers removed, move the new starter assembly into position.
  • On the SRM-225, the starter assembly unit also helps to hold the fuel tank in place on the engine.

 

5. Pull the start cord to engage the starter.

Here's how the starter on your Echo trimmer works:

The back of the starter assembly engages a clutch-like mechanism on the trimmer shaft. When the starter cord is pulled, the starter assembly's clutch system engages the trimmer shaft and turns it. The turning trimmer shaft causes the flywheel to rotate whose magnets then create an electrical spark in the ignition coil. The electrical spark travels from the ignition coil to the trimmer's spark plug, which then ignites the trimmer's fuel and starts it running.

In order to be properly installed, the starter assembly's clutch-like system must be properly engaged on the trimmer shaft before it is secured down.

Trimmer Starter Assembly

  • Pull the trimmer's starter cord a little until you feel the starter assembly engage the trimmer shaft.

 

6. Replace the starter assembly screws.

Now that the starter is properly engaged in the trimmer shaft, it is ready to be secured to the trimmer. Start reassembling the trimmer in reverse order.

Trimmer Starter Assembly Screws

  • Replace the four screws in the face of the starter assembly.
  • Replace the bottom and side screws around the starter assembly and the fuel tank.

 

7. Replace the top cover.

  • Thread the spark plug boot back through the cover and reattach it to the spark plug.
  • Once the top cover is positioned, clip the two ignition wires back onto it.
  • Reinstall the two top cover screws

The Echo SRM-225 trimmer is now reassembled with a new starter assembly and this repair is complete.

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Conclusion

Watch this article's repair video to see a demonstration of this repair on the Echo SRM-225.

If your Echo trimmer model needs a new starter assembly or other parts, visit our Echo trimmer parts page here at eReplacementParts.com to find your Echo trimmer model. You can also find Echo parts for you trimmer by typing its model number in the search field at the top of this or any eReplacementParts.com webpage.

We hope we've helped you save money on your tool repairs with this and other eReplacementParts information tools. In combination with our streamlined ordering and shipping services, we hope to put the power of professional tool repair in the hands of our customers.

 

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