[Lifetime Warranty] Speed Feed 400 Trimmer Head Cap and Spring Kit - Compatible with Echo Weed Eater Head SRM-225 SRM-230 PAS-225 String Trimmer Echo Trimmer Parts X472000070 - Pack of 4
Set of four Speed Feed 400 trimmer head caps, springs, and eyelets compatible with Echo string trimmers.
Dimension diagram of Speed Feed 400 trimmer head cap, spring cap, and spring for Echo string trimmers.
Close-up views of the durable ABS plastic Speed Feed 400 trimmer head cap for Echo string trimmers.
Compatibility chart for Speed Feed 400 trimmer head cap and spring kit showing assembly steps for Echo string trimmers.
Instructional graphic showing easy installation of Speed Feed 400 trimmer head cap and spring for Echo string trimmers.
Infographic showing Echo string trimmer and Speed Feed 400 trimmer head cap and spring kit to fix common issues.
Comparison chart showing Speed Feed 400 trimmer head cap and spring quality versus generic alternatives.
Close-up of Speed Feed 400 trimmer head cap and spring for Echo string trimmers.
Set of 4 Speed Feed 400 trimmer head caps, springs, and eyelets for Echo string trimmers.
Set of four Speed Feed 400 trimmer head caps, springs, and eyelets compatible with Echo string trimmers.
Dimension diagram of Speed Feed 400 trimmer head cap, spring cap, and spring for Echo string trimmers.
Close-up views of the durable ABS plastic Speed Feed 400 trimmer head cap for Echo string trimmers.
Compatibility chart for Speed Feed 400 trimmer head cap and spring kit showing assembly steps for Echo string trimmers.
Instructional graphic showing easy installation of Speed Feed 400 trimmer head cap and spring for Echo string trimmers.
Infographic showing Echo string trimmer and Speed Feed 400 trimmer head cap and spring kit to fix common issues.
Comparison chart showing Speed Feed 400 trimmer head cap and spring quality versus generic alternatives.
Close-up of Speed Feed 400 trimmer head cap and spring for Echo string trimmers.
Set of 4 Speed Feed 400 trimmer head caps, springs, and eyelets for Echo string trimmers.
Lifetime Warranty

[Lifetime Warranty] Speed Feed 400 Trimmer Head Cap and Spring Kit - Compatible with Echo Weed Eater Head SRM-225 SRM-230 PAS-225 String Trimmer Echo Trimmer Parts X472000070 - Pack of 4

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Speed Feed 400 Trimmer Head Cap and Spring Kit - Compatible with Echo Weed Eater Head SRM-225 SRM-230 PAS-225 String Trimmer Echo Trimmer Parts X472000070 - Pack of 4

Key Features

  • Package includes: 4 replacement caps and 4 replacement springs.
  • Designed for trimmer heads with a rapid line loading system.
  • Constructed from high-impact plastic for durability.
  • Direct replacement for the original cap and spring assembly.

Replaces / Cross-Reference Part Numbers

  • X472000070
  • 90170Y

Compatibility & Fitment

  • Fits Echo Speed Feed 400 trimmer heads.
  • Compatible with Echo SRM series straight shaft trimmers, including: SRM-210, SRM-225, SRM-230, SRM-250, SRM-265, SRM-266, SRM-266S, SRM-280, SRM-2620.
  • Compatible with Echo PAS series attachments, including: PAS-225.
  • Compatible with Echo GT series trimmers, including: GT-225L, GT-230.

When to Replace

  • The existing cap is cracked, broken, or heavily worn from contact with hard surfaces.
  • The internal spring is lost, broken, or has lost tension.
  • The trimmer line fails to advance when the head is bumped on the ground.
  • The cap no longer fits securely onto the trimmer head housing.

Installation Tips

  • Ensure the trimmer engine is stopped and the spark plug is disconnected before performing maintenance.
  • Remove the old cap by pressing the locking tabs or unscrewing it from the trimmer head.
  • Remove the old spring and clear any debris from the head assembly.
  • Place the new spring into its housing.
  • Align the new cap with the trimmer head and press or twist until it locks into place.

FAQ

This kit is designed for Echo Speed-Feed 400 trimmer heads, including 4-inch Speed-Feed 400 applications. Compatible models include the Echo SRM-225, SRM-225i, SRM-225U, SRM-230, SRM-230S, SRM-230U, PAS-225, GT-225L, GT-225SF, GT-230, SRM-2620, SRM-2620T, SRM-2620U, and SRM-266. Because fitment can vary by trimmer head version, please match your existing cap and part number before ordering.
This kit replaces Echo part number X472000070, which serves as the Speed-Feed 400 trimmer head wear cap, spool cover, or head cover.
Common signs include a cracked or missing cap, the cap popping off during use, weak spring tension, difficulty holding the spool in place, excessive wobble at the trimmer head, or the head failing to feed line properly after the cap is installed. If the cap is badly worn from ground contact, replacement is recommended.
This kit includes both the outer wear cap/spool cover and the internal spring for the Speed-Feed 400 head. Replacing both parts together helps restore proper cap retention and spool pressure.
Installation is straightforward and typically takes 5 to 10 minutes. No special tools are required. Simply remove the old cap, inspect the spring seat and spool area, set the new spring in place, and snap or seat the new cap onto the trimmer head. If the cap does not lock in securely, check for damage to the head body or spool tabs.
Check the spool retainer area, locking tabs, spring seat, and the head body for cracks or wear. Additionally, inspect the line spool and eyelets for binding or damage. If the previous cap wore out quickly, the trimmer may have been run frequently against pavement or hard ground, which accelerates wear on this component.