Products Description
STIHL FS38/FS45/FS55 Brushcutter Grass Guard Assembly with Fitting Components
Complete OEM-Spec Guard Kit for STIHL FS 38, FS 45, FS 55 & Compatible Trimmers
The grass guard is an essential safety component on STIHL FS38, FS45, FS55, and compatible brushcutters. Mounted above the cutting attachment, the guard performs two critical functions: it deflects debris-grass clippings, stones, and dirt-away from the operator during cutting, and it provides a barrier between the cutting tool and hard objects on the ground. When using metal blades or mowing heads, a compatible heavy-duty guard is mandatory. This replacement assembly includes the guard body, mounting straps, screws, and associated hardware, providing a complete solution to restore original equipment safety and functionality.
Technical Profiles & Materials
Critical Operator Protection Component
Specifically designed for the STIHL FS38, FS45, FS55, and compatible models such as the FS46, FC55, and KM55. The guard is an essential safety device when using nylon line heads, mowing heads, or metal blades. Proper guard installation is required by STIHL operational guidelines for safe equipment use.
Compatibility with Multiple Cutting Attachments
The FS 38/45/55 platform guard is compatible with both nylon line heads (with or without grass skirts) and metal blades. This versatility allows operators to use the same guard for different cutting applications, from light grass trimming to heavy brush clearing, without needing to change the guard each time.
Durable & Impact-Resistant Construction
Manufactured from tough engineering-grade plastic, the guard withstands high-velocity debris impacts and daily outdoor use. The robust design protects the operator and also serves as the mounting base for the cutting tool. When used with metal cutting blades, STIHL offers specific guard variants designed for heavy-duty attachments.
Technical Specifications
| # | Parameter | Specification |
|---|---|---|
| 1 | Compatible Models | STIHL FS38, FS45, FS46, FS55, FC55, HL45, KM55 |
| 2 | Mounting Type | Clamp / bolt-on fixation |
| 3 | Primary Function | Debris deflection & cutting tool mounting base |
| 4 | Associated Hardware | Sealing ring (OEM 9639 003 1230) – 12mm ID × 22mm OD × 7mm thickness |
| 5 | Replacement OEM References | 4140 140 2850 (air filter cover), 4130 713 4100 (cutting blade) |
| 6 | Unit Weight (Typical) | Approx. 0.05kg (seal ring), 0.30kg (guard cover assembly) |
Products Application
Brushcutter Safety Maintenance
Direct replacement for damaged, cracked, or missing original guards on FS38/FS45/FS55 models. Restoring the guard is a fundamental safety requirement before operating the machine, as it protects the operator from debris and helps maintain safe cutting practices.
Cutting Attachment Upgrade or Change
When converting the machine from a nylon line head to a metal blade, the correct heavy-duty guard variant must also be installed. This ensures the guard is rated for the higher impact forces generated by metal blades and provides proper blade coverage for safe operation.
Complete Machine Overhaul
During routine servicing or when replacing major engine components such as the carburetor, it is standard practice to inspect and replace degraded gaskets, seals, or mounting hardware. Service kits are available that include the guard or guard mounting hardware alongside other maintenance items like air filters and spark plugs, ensuring the machine remains sealed and fully functional.
Quality and Craftsmanship Details
Products Package
About Us
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FAQ
Q: How do I confirm this grass guard fits my brushcutter?
A:Check your machine model number on the identification plate. This guard is confirmed compatible with STIHL FS38, FS45, FS46, FS55, FC55, HL45, and KM55 models. Also verify the cutting tool you are using (nylon line or metal blade) and select the corresponding guard type.
Q: Do I need a different guard when using a metal blade?
A: Yes. STIHL recommends using a specific guard variant designed for metal blades when converting from a nylon line head. The metal blade guard provides additional coverage and is engineered to withstand the higher impact forces associated with heavy brush clearing.
Q: What additional parts are needed to install a metal blade guard on an FS55?
A: Installing a metal blade on the FS55 requires a complete metal cutting attachment kit. This kit typically includes the metal blade, the dedicated guard, a clamping washer, a retaining nut, a locating pin, and an anti-vibration handle component to ensure safe and correct installation.
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