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SRM-400BE Echo Trimmer - Overview

Diagrams for SRM-400BE

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Nut 10 – Part Number: 90051100010
$6.40
In Stock
Nut 10
Part #90051100010
The m10 Left Hand Thread Nut is a 10mm, gold metal part, sold individually. This nut is a "reverse thread". It requires a wrench or socket set to install, and installation is rated as "Easy". Use this part to secure the blade to the unit, by attaching it to the shaft, securing the cutting blade. If broken or damaged, it should be replaced. Refer to your make, model and diagrams to check if this is the right part for you.
Split Pin 2 X 22 – Part Number: 90030020022
$6.55
In Stock
Split Pin 2 X 22
Part #90030020022
The Cotter Pin (or Split Pin) is a 2x22mm silver metal part, sold individually. It is rated as "Easy" to install, and installation will require a set of pliers. It can be attached in various locations on a variety of equipment and is used to secure and lock parts in place. If broken, damaged, or worn down the part it is securing may become loose, and the part should be replaced. If this part is removed for repairs, replace it with a new one. Refer to your make, model, and diagrams to make sure this is the correct part.
Spark Plug Champion Rcj6Y – Part Number: 15901010630
No Longer Available
Spark Plug Champion Rcj6Y
Part #15901010630
Trimmer Nut – Part Number: 90050000005
$6.06
In Stock
Trimmer Nut
Part #90050000005
This OEM nut is a 5mm, gold, metal nut, which is sold individually. It can be installed with a Wrench or Socket and Torque Wrench by torquing to the manufacturer specifications. This nut is used to secure another part in place, and should be replaced if damaged due to fatigue (such as damaged threads or rounded ends). This nut can have various uses on various equipment, and as such the difficulty of the installation can vary, but generally this is an easy repair.
Trimmer Spark Plug Coil – Part Number: 15901103432
$6.40
In Stock
Trimmer Spark Plug Coil
Part #15901103432
This spark plug wire, also known as a spark plug coil or spark plug cap coil, is compatible with various makes and models of hand-held outdoor power equipment and is sold individually. This wire is installed within the spark plug boot and attaches to the spark plug for the ignition of your equipment. The spark plug wire is often exposed to extreme heat and excessive vibrations, so through normal wear and tear, it will likely break down. If your equipment is having difficulty starting or has general performance issues, the wire may be the reason why. To replace this wire, make sure your equipment is off before removing the wire and boot from the spark plug. Remove the boot from the wire and install the new wire within the boot before re-installing the boot back to the spark plug.
Trimmer Shield Assembly – Part Number: 69900440931
$33.01
In Stock
Trimmer Shield Assembly
Part #69900440931
This trimmer shield assembly is designed to protect the operator by deflecting grass, dirt, and debris away from the cutting area during trimming. Made from durable, impact-resistant plastic, it helps improve safety while also shielding key components from damage. Many versions include an integrated line-cutting blade to keep trimmer line at the proper length for consistent performance. Ideal for replacing a cracked or missing guard, it restores safe operation and dependable trimming control.
Washer 5 – Part Number: 90060300005
$6.06
In Stock
Washer 5
Part #90060300005
This OEM metal washer is commonly used on a variety of different small engine/lawn equipment models and is sold individually. This washer is used to help evenly distribute pressure from the securing bolt or screw with the cylinder cover, to reduce any effects of vibration from the engine. If the connection between the securing fastener becomes loose, or if you are replacing the fastener itself, it is recommended that you replace this washer as well.
Screw-5x20 – Part Number: 90016205020
$6.40
In Stock
Screw-5x20
Part #90016205020
This replacement screw is specially designed for use with Echo handheld lawn and garden equipment. It is a high quality OEM sourced item, not an aftermarket imitation. This screw is a standard hardware which has multiple uses depending on the equipment. Please note, this hex socket head screw is sold individually.
Fixture-blade – Part Number: C535000150
$12.05
In Stock
Fixture-blade
Part #C535000150
The Blade Fixture is a silver, metal, individualy sold blade, which attaches at the bottom of the cutting head assembly, being held on by the nut and cotter pin. It is used to secure the blade fixing plate of the trimming tool. Installation is rated as "Easy" and requires a wrench and pliers to complete. If broken or damaged due to general wear, the cutting blade will not be secured, may be loose, or may not be able to stay on, which means you need to replace it. Refer to your make, model, and diagrams to ensure this is the correct part.
Grommet – Part Number: 13211504920
$6.40
In Stock
Grommet
Part #13211504920
This replacement grommet is an authentic OEM item that is produced for use with Echo gas powered equipment. It fits in the fuel tank to secure the hose and seal the opening. Over time it may deteriorate and crack eventually requiring replacement. It is made from durable rubber material and it is sold individually.
Spark Plug Cap – Part Number: 15901203433
$9.81
In Stock
Spark Plug Cap
Part #15901203433
This spark plug boot is an authentic OEM supplied replacement part, not an aftermarket equivalent. This rubber cap helps is used to connect the spark plug to the armature-magneto. Over time rubber material can dry out and crack requiring replacement. Please note, this part is sold individually.
Screw 4 X 10 – Part Number: 90024204010
$6.40
In Stock
Screw 4 X 10
Part #90024204010
This is an original Echo replacement part manufactured for use with outdoor power equipment. This special screw includes a washer and can be used with either flat or phillips head drivers. The screw has different applications, please see model diagram for part location and use. The screw is sold individually.

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Echo trimmer had narrow shield. Bought wider one which reduced rocks and debris
5 of 9 people found this instruction helpful.
  • Robert from COEUR D ALENE, ID
  • Very Easy
  • Less than 15 mins
  • Screw drivers
Easiest repair ever. Turn the trimmer upside down so you can access the string assembly. Find the small hole in the shaft beneath the string assembly and insert a heavy gauge nail into it to hold the shat in place. Turn the string assembly counterclockwise until it comes off. Lift off the round metal piece that was under the string assemb ly.Find the 3 screws holding the shield in place and unscrew them. Pull the shield off. Install the new one in reverse order. I used the original hex screws as the new ones were philips head. Hex worked perfectly. I was amazed how easy thus was to do.
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