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Description
99944200907B Speed-Feed 400 Trimmer Head - Fits Echo SRM Series & Straight Shaft Trimmers (SRM-225, SRM-220, SRM-23099944200907B Trimmer Head Key Features Patented "Speed Feed" Reloading: Engineered for maximum efficiency, this head allows you to reload the entire spool in under 30 seconds without disassembling the housing or using any tools. Commercial Grade Bump Advance: Features a high response internal spring and balanced centrifugal design for reliable, jam free line advancement with a light tap on the ground. Split Spool Internal Divider: Designed with a
99944200907B Trimmer Head
Key Features
- Patented "Speed-Feed" Reloading: Engineered for maximum efficiency, this head allows you to reload the entire spool in under 30 seconds without disassembling the housing or using any tools.
- Commercial-Grade Bump Advance: Features a high-response internal spring and balanced centrifugal design for reliable, jam-free line advancement with a light tap on the ground.
- Split-Spool Internal Divider: Designed with a specialized internal wall that keeps the two line segments separate, preventing line "welding" and overlapping that causes feeding failures.
- Reinforced Alloy Eyelets: Equipped with heavy-duty metal line exits that resist friction-induced heat, ensuring the line remains flexible and doesn't snap at the head during thick brush clearing.
- Universal Straight-Shaft Balance: Specifically balanced to reduce vibration across a wide range of engine displacements, protecting your gear head bearings and reducing hand fatigue.
Replaces / Cross-Reference Part Numbers
- 99944200907B
- 99944200907
- 99944200908
- X047000800
Compatibility & Fitment
This "400" series head is the primary replacement for Echo's professional-grade straight-shaft trimmers. Key compatible models include:
- Echo SRM Entry Series: SRM-210, SRM-220, SRM-225, SRM-225i, SRM-230, SRM-231.
- Echo Professional Series: SRM-265, SRM-266, SRM-266T, SRM-280.
- Echo High-Torque & New Models: SRM-2320T, SRM-2620, SRM-2620T, SRM-3020.
- Technical Specification: Fits all straight-shaft models utilizing the M10 x 1.25 LHF (Left Hand Female) arbor thread.
When to Replace
- Worn-Through Bump Cap: The center knob has ground down from pavement contact to the point where the internal spring is visible or the line release no longer functions.
- Cracked Housing: Visible stress fractures or missing chunks of the black outer shell, which can cause the head to shatter at high RPMs.
- Eyelet Failure: The metal eyelets have fallen out or are deeply grooved, causing the trimmer line to snap off inside the head repeatedly.
- Loading Mechanism Jam: The internal indexing mechanism is seized with dried sap and debris, preventing the arrows from aligning for a reload.
- Excessive Vibration: The head has become unbalanced due to uneven wear, putting unnecessary stress on the trimmer's gear head and drive shaft.
Installation Tips
- Left-Hand Threads: Remember, this head is Left-Hand Threaded. To tighten it onto the trimmer, you must turn it Counter-Clockwise.
- Lock the Gear Head: Use a small screwdriver or the factory locking pin to hold the gear head shaft stationary while you spin the old head off and the new one on.
- Alignment for Reloading: To reload, rotate the top knob until the arrows on the knob align perfectly with the metal eyelets. Push your line through until it is even on both sides, then twist the knob to wind.
- Soak Your Line: To extend the life of your trimmer line, soak the spool in water for 24 hours. This keeps the nylon hydrated, making it more flexible and resistant to snapping at the eyelet.
- Clean the Spring: Every time you reload the line, shake out any dirt or grass trapped around the internal spring to ensure the "bump" action stays smooth and responsive.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 15 reviews
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Product Reviews
★★★★★ 5
Can I have Term 2 now?
Format: Kindle
This is by far my favorite book of Lyra's to date. I gobbled this book up so fast, I was so upset I finished it. I know this is going to be a book I reread, just like Fate Hollow Academy.
I loved Fate Hollow Academy, so I was excited when Lyra announced she was taking us readers back to Kalista. Although the characters from Fate Hollow are mentioned several times throughout the book, this book is about Pandora and her love interests in the Demon Realm.
Before you deep dive into this book, definitely look at the trigger warnings before you start. When Lyra says there's dark themes in this book, she meant it. Also, just know this book does end on a cliffhanger and will probably leave you with as many questions as it did me.
Below may contain some minor spoilers, so keep that in mind if you want to keep reading my review.
Pandora's first 2 decades of her life are full of torture, hatred, and confinement in a cellar. That is until her father finds her and brings her into the world she was supposed to live in. Because of her upbringing she wasn't acclimated to the Demon world and the way their society works so when she is offered the chance to go to a Demon Reform Accademy, she accepts it to learn the ways of society and how she is supposed to feed.
Pandora isn't like the other common demons in this world, no. She, like her father Death, are soul-eaters. Pandora is too scared to release her powers because she doesn't want to kill anyone, so she needs to learn how to feed off of a piece of soul instead of taking the whole thing.
Because of who her father is, she's classed as a Noble, and while she doesn't agree with her fellow Noble students, who look down on the "lower" class, she also is faced with 3 Demons who hate her for being a Noble. Theses a lot of back and forth tension which these 3 demons who have issues of their own. One is obsessed with her, and wants to know all of her secrets. One leaks fear all over the place, but also is scared of the "princess" -wink- -wink-. One is a complete drunk who doesn't like her just because he's got family Noble problems.
Don't worry, there are 2 other demons who are just the sweetest towards her. One who will get vengeance for anything done to her, he's got Golden Retriever energy around her and touch her and die energy for anyone around her. Finally, there is one who is friends with her even when the whole school is scared of her, who brings her into his dreams and will create nightmares for those who bother her.
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Reviewed in the United States on June 4, 2024
★★★★★ 4
This was more than I expected...
Format: Kindle
So...I finished this book at nearly 2am! It was just that hard to put down. I loved that it's set in the same world as Fates Hollow but in the future. Poor Pandora has been through so much but there's light at the end of the tunnel for her. She finally meets her dad and it turns out he's amazing. In order to help her learn about demon society and how to control her magic he sends her to the Demon Reform Academy. There she meets 2 awesome demons who help her and care for her. She also sadly meets her 3 tormentors. I will say though that while they do bully Pandora they also rescue her several times and defend her. They too have traumatizing pasts and can't see the good that is in front of them. Of course demon society needs to be shaken up too since that's part of the problem. I really enjoyed this read. I teared up a few times throughout the book but I liked the characters and that ending...well it looks like 3 in denial are going to need to grovel hard.
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Reviewed in the United States on June 1, 2024
★★★★★ 5
MUST READ BOOK!!
Format: Kindle
I was in a huge reading slump, when one of my favorite authors recommended this book in her readers group (The amazing Marie Mistry 🫶) and I absolutely DEVOURED this book. Now I’m in the club crying about having to wait until December for Term 2!
This book is about a girl named Pandora who has suffered a life that nobody would ever wish to have. This book is about Pandora learning how to live, learning about herself and what she really wants. She has a long journey to find out all of these things, but she took the first steps in this book and it was beautiful to read. Some of the men in this book are our dream men, Hunter and Reed 😍 and then we have the men who need some work and who we all really just want to beat up until they admit what they really feel, Skel, Bram and Dexter. But that cliffy was a killer and I absolutely cannot wait until the next book!!
You have written an absolute dream of a book Lyra and I eagerly await the next installment in this series!!!
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Reviewed in the United States on June 7, 2024
★★★★★ 5
Monstrously Sweet
Format: Kindle
This book packs an emotional punch, especially if you’ve experienced childhood trauma (particularly abuse and/or neglect). Alexandra creates these three strong protectors who love her and will do anything to make her feel happy and safe. She started out drawing them when she was a small child, and then transitioned to stories as she grew up. Lucien, Elwin, and Kylo look frightening in their monster forms, but it’s clear that they would never hurt Alexandra, and she has never felt afraid of them. They have very distinct personalities that we get to know better throughout the book. The love and devotion they have for Alexandra is sweet and unwavering.
This is a fantastic and creative story! The world-building is wonderful - it’s a shared world with M. Sinclair, and takes place at a university for supernatural beings. The additional world-building within Alexandra’s story added even more depth and intrigue. The spicy times were 🥵 and it’s more of a medium burn, but it works with the characters and I expect that it’ll pick up quite a bit in the next books.
Monsters Within has a unique way of addressing mental health issues that can come from being abused and neglected. There are some flashbacks to Alexandra’s childhood that provide some insight but they don’t go into heavy details.
I absolutely adored this book and can’t wait for more!
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Reviewed in the United States on March 21, 2022
★★★★★ 4
One of us
Format: Kindle
Alexandra is literally one of us. She's just lucky her fictional men became a reality hahaha. This was a good start to what I know is going to be a great series. This was fast paced and kept me entertained. Im ready for the chaos to slow down a little bit so we can get more into the character development. There's so much happening, I feel like we hardly know anything about anyone BUT that's why this is a series so let's get to the next one!
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Reviewed in the United States on April 19, 2025