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Please note: The same product has three mounting nut sizes, this product size is 12x1.75L, Save yourself the hassle of returns and exchanges by double-checking your engine's model number and part number before ordering any parts.
T35 Trimmer Head Replacement fit Husqvarna 578446401 T35 Tap Advance Straight Shaft String Trimmer Head fit for .095-Inch Trimmer Line
578446401 Trimmer Head Fit for Husqvarna 135R 143R 143R-II 153R 235FR 235R 235R-II 236R 241R String Trimmer Parts
Fit for Husqvarna 243RJ 253RB 333R 333RJ 335FR 335LS 335Lx 335RJx 335Rx 336FR 336FRD String Trimmer Parts
Fit for Husqvarna 535LS 535RJ 535Rx 353Rxt 543RS 543RBDx 553RBx String Trimmer Parts
Fit for Husqvarna 122LDX, 123L, 123LD, 125L, 128L, 128LDX,129L, 129LDX, 129DJX, 223L, 224L, 225L, 225LD, 225R, 225RJ, 232L, 232R, 235RJX String Trimmer Parts
Package Includes
1 * trimmer head as pictured.
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2."How do I load the string on a trimmer head?"
A:"To load string onto a trimmer head, first turn off the trimmer and remove the trimmer head if needed. Take out the spool and cut a length of trimmer line, typically 10-20 feet. Wind the string onto the spool in the direction indicated (usually clockwise), ensuring it is wound tightly and evenly. For dual-line spools, divide the string into two parts and wind each separately. After loading, reattach the spool to the trimmer head and thread the string through the eyelets. Finally, test the trimmer to ensure proper string feed."
3."Are there different types of trimmer heads for different brands?"
A:"Common types of trimmer heads include bump feed, auto-feed, manual feed, fixed line, plastic blade, and spool-less. Each type has its advantages, such as convenience, durability, or ease of use. Compatibility depends on the trimmer model, so it's essential to check your trimmer's specifications before purchasing a new head to ensure it fits correctly."
4."Why is the trimmer head not feeding line properly?"
A:"A trimmer head may fail to feed line properly due to several reasons, including clogged spools, incorrect line installation, damaged spools, or using the wrong line thickness. Other possible causes include issues with the trimmer's feed mechanism (such as bump feed or auto-feed), worn springs, overloading the spool with too much line, or a low power supply. To resolve the issue, inspect and clean the spool, ensure proper line installation, and check for any worn or damaged parts. Regular maintenance and using the correct line size can help prevent these problems."
5."Can I use a universal trimmer head for Echo/Stihl/Husqvarna?"
A:"While a universal trimmer head can work across different brands like Echo, Stihl, and Husqvarna, it’s crucial to check the compatibility with your trimmer's shaft size, mounting system, and line specifications."
6."What size string should I use with my trimmer head?"
A:"Check Your Trimmer’s Manual: Always refer to the manual for your specific model, as manufacturers may have different recommendations for line thickness.
Match the Line with the Job: Lighter, thinner lines (0.080" to 0.095") are good for regular grass trimming, while thicker lines (0.110" to 0.130") are better for tougher weeds or brush.
String Type: You can also choose between different types of string, like round, square, or twisted, depending on your needs. Square or twisted strings tend to cut more efficiently for heavy-duty use.
Always ensure the line size you choose is compatible with your trimmer head, as using too large of a string could cause feeding issues or damage."
7."Why does my trimmer head keep getting stuck?"
A:"A trimmer head can get stuck for several reasons, including clogged or jammed spools, worn or broken feed mechanisms, incorrectly loaded or overloaded trimmer line, and debris buildup. Other possible causes include a damaged spool spring, dirt in the mechanism, a faulty trimmer head, low power in cordless models, or using the wrong line type or thickness. Regular cleaning, proper line loading, and timely replacement of worn parts can prevent these issues. If the problem persists, some components may need to be replaced."
8."How do I maintain my trimmer head?"
A:"Regular cleaning after each use is essential, followed by checking the spool for damage and ensuring the trimmer line is properly loaded. Replacing worn or broken line, lubricating the moving parts, and inspecting the line feed mechanism are important tasks to avoid feed issues. Additionally, tightening bolts and screws, checking the head for wear, and replacing it when necessary will keep your trimmer in top condition."
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