Price is for 1 complete trimmer head kit. Please select quantity above.
SKU: 70662
Thread Size: 10mm × 1.25mm LEFT HAND THREAD
⚠️ CRITICAL: Turn COUNTER-CLOCKWISE to tighten!
Line Compatibility: 2.0mm · 2.4mm · 2.7mm · 3.0mm · 3.3mm
Includes: 4 meters × 2.4mm professional grade line
Replaces: 72560-VL1-631 · 72560-VL1-632
Australian Stock · Fast Dispatch · OZ Wonderful
⚠️ CRITICAL THREAD WARNING — READ BEFORE PURCHASE ⚠️
THIS TRIMMER HEAD HAS A LEFT HAND THREAD — 10mm × 1.25mm
To tighten, turn COUNTER-CLOCKWISE (left). To remove, turn CLOCKWISE (right).
Fits models with 10mm × 1.25mm left hand thread specification. WILL NOT fit standard right-hand thread models.
Compatible with: GX25 · GX35 · UMK425 · UMK435 · UMK431 · UMK422 · UMT431
Replaces: 72560-VL1-631 · 72560-VL1-632
Product: Universal Bump Feed Trimmer Head — SKU: 70662
Thread Size: 10mm × 1.25mm LEFT HAND THREAD — CRITICAL: Turn counter-clockwise to tighten!
Compatibility: GX25 Series · GX35 Series · UMK425 · UMK435 · UMT431 · UMK422 · UMK431 · Straight shaft models
Replaces Part Numbers: 72560-VL1-631 · 72560-VL1-632
Line Compatibility: 2.0mm · 2.4mm · 2.7mm · 3.0mm · 3.3mm
Included Line: 4 meters × 2.4mm professional grade trimmer line
Feed Type: Bump Feed (Tap & Go) — Quick line extension with simple ground tap
Material: High-Impact Polymer & Metal Components
Installation: Direct replacement — no modifications required
Applications: Brush cutting · Grass trimming · Weed whacking · Lawn maintenance · Professional landscaping
⚠️ SAFETY WARNING: Always wear safety glasses and protective clothing. Ensure engine is off and cool before installation. Check head tightness regularly.
Australian Stock: Yes — fast dispatch from local warehouse
Universal Bump Feed Trimmer Head — GX25/GX35 Compatible
10mm×1.25mm Left Hand Thread · 2.0-3.3mm Line · 4m Line Included
⚠️ CRITICAL: LEFT HAND THREAD — Turn COUNTER-CLOCKWISE to tighten! Compatible with GX25, GX35, UMK425, UMK435, UMT431, UMK422, UMK431.
🎯 Wide Compatibility — Fits These Models
Replaces Part Numbers: 72560-VL1-631 · 72560-VL1-632
📏 Line Size Compatibility — 5 Diameters Supported
💡 Line Selection Guide: 2.0-2.4mm Light · 2.7-3.0mm Medium · 3.3mm Heavy
✅ Approved Applications — What This Trimmer Head Is FOR
⚠️ IMPORTANT SAFETY & USAGE INFORMATION
⚠️ CRITICAL: LEFT HAND THREAD — This head has a 10mm × 1.25mm LEFT HAND THREAD. Turn COUNTER-CLOCKWISE to tighten! Turning the wrong direction will damage the threads and may cause the head to detach during operation.
🛡️ WEAR SAFETY EQUIPMENT — Always wear safety glasses and protective clothing when operating a trimmer. Debris and line fragments can cause serious injury.
🔧 PROPER INSTALLATION — Ensure the head is correctly installed and tightened before use. Improper installation can cause head detachment during operation.
📏 USE SPECIFIED LINE — Use only the specified line diameters (2.0-3.3mm). Using incorrect line sizes can cause damage or malfunction.
🔍 REGULAR INSPECTION — Check head tightness regularly during extended use. Inspect for cracks or wear — replace worn components immediately.
⚠️ INSTALLATION & MAINTENANCE GUIDELINES ⚠️
• Installation: Ensure engine is off and cool. Disconnect spark plug wire. Remove old head (turn clockwise). Clean threads. Install new head (turn counter-clockwise). Tighten securely but do not over-tighten.
• Line Loading: Follow manufacturer's line loading instructions for optimal performance.
• Maintenance: Clean head after each use to prevent debris buildup. Inspect for cracks or wear regularly. Store in dry location to prevent corrosion.
• Line Quality: Use quality trimmer line for best performance and longevity.
🛠️ Installation Guide — 6 Simple Steps
Safety First
Ensure engine off & cool. Disconnect spark plug wire.
Remove Old Head
Hold shaft, turn CLOCKWISE to remove (LH thread)
Clean Threads
Remove debris, inspect for damage
Install New Head
Thread COUNTER-CLOCKWISE until finger tight
Secure & Load
Tighten securely. Load line per instructions
Test Operation
Start engine, test bump-feed function
Product Description — Universal Bump Feed Trimmer Head
The Universal Bump Feed Trimmer Head (SKU: 70662) is a premium aftermarket replacement head designed for popular straight shaft brush cutters and trimmers. Featuring advanced bump-feed technology, this head allows quick line extension with a simple ground tap — no stopping required during operation.
⚠️ CRITICAL: This head has a 10mm × 1.25mm LEFT HAND THREAD. Turn COUNTER-CLOCKWISE to tighten! Compatible with GX25, GX35, UMK425, UMK435, UMT431, UMK422, UMK431 and similar straight shaft models. Replaces OEM part numbers 72560-VL1-631 and 72560-VL1-632.
The head accepts multiple line diameters from 2.0mm to 3.3mm, providing versatile cutting performance across different grass types and conditions. The kit includes 4 meters of 2.4mm professional-grade trimmer line for immediate use.
⚠️ IMPORTANT REMINDER: Always wear safety glasses and protective clothing. Ensure the head is correctly installed (counter-clockwise to tighten) and tightened securely. Check head tightness regularly during extended use.
⭐ Key Features & Benefits
📏 Technical Specifications
| SKU | 70662 |
| Product Type | Universal Bump Feed Trimmer Head |
| Thread Size | 10mm × 1.25mm LEFT HAND THREAD |
| ⚠️ Thread Direction | Turn COUNTER-CLOCKWISE to tighten! |
| Feed Type | Bump Feed (Tap & Go) |
| Line Capacity | 2.0mm – 3.3mm diameter |
| Included Line | 4 meters × 2.4mm professional grade |
| Material | High-Impact Polymer & Metal Components |
| Compatibility | GX25 · GX35 · UMK425 · UMK435 · UMT431 · UMK422 · UMK431 · Straight shaft models |
| Replaces | 72560-VL1-631 · 72560-VL1-632 |
| Package Includes | 1 × Trimmer Head · 4m × 2.4mm Line |
🌿 Why Choose This Trimmer Head
Professional Grade Quality
Engineered to match OEM specifications
Fast Shipping
Australian stock — ready to dispatch
Quality Guaranteed
Premium aftermarket construction
Perfect Fit
Direct replacement — no modifications needed
Ready to Use
4m line included for immediate installation
Bump Feed Technology
Quick line extension with simple ground tap
🌿 REAL USER FEEDBACK 🌿
✅ PROFESSIONAL LANDSCAPER: "This bump feed head is excellent quality. It fits perfectly on my GX35 — the left hand thread was a bit tricky at first but once I understood it, installation was easy. The bump feed works smoothly and the included line is good quality."
✅ HOMEOWNER: "Replaced the worn head on my UMK425 with this one. Fits perfectly and works great. The bump feed is much more convenient than the old manual feed system. Comes with plenty of line to get started."
✅ GARDENER: "I use this professionally for garden maintenance. The head is durable and the 2.4mm line handles most jobs well. The compatibility with multiple line sizes is a plus — I can switch to thicker line for tougher weeds."
✅ TRADIE: "Good replacement head for my brushcutter. The left hand thread is correct for my model (GX25). Bump feed works reliably and the head feels solid. Good value for money."
"The bump feed is so much better than the original head on my trimmer. Just tap the ground and you're back to work. The 4m of line included was enough to get me going straight away. Highly recommend." — Verified buyer
✅ Quality Assurance
Each Universal Bump Feed Trimmer Head is manufactured to professional quality standards with high-impact polymer and metal components. Every head is inspected for proper thread specification, bump-feed mechanism, and overall construction.
Every head is inspected to verify:
- ✅ 10mm × 1.25mm left hand thread — correct specification
- ✅ Bump-feed mechanism operates smoothly and reliably
- ✅ Line capacity accepts 2.0mm to 3.3mm diameters
- ✅ High-impact polymer and metal components are defect-free
- ✅ Included 2.4mm line is professional grade quality
- ✅ Fits GX25, GX35, UMK425, UMK435, UMT431, UMK422, UMK431
❓ Frequently Asked Questions
Shipping & Support — Australian Stock
🌿 Universal Bump Feed Trimmer Head — SKU: 70662
GX25/GX35 Compatible · 10mm×1.25mm LH Thread · 2.0-3.3mm Line · 4m Line Included
⚠️ CRITICAL: LEFT HAND THREAD — Turn COUNTER-CLOCKWISE to tighten!
💡 Bulk Orders Welcome! Contact us for volume pricing on multiple heads.
⚠️ REMINDER: This is a LEFT HAND THREAD (10mm×1.25mm). Turn COUNTER-CLOCKWISE to tighten. Ensure correct installation before use. Australian stock — fast dispatch.
EXTRA CHARGE FOR REMOTE AREA
Our shipping rates currently apply only to Metropolitan Areas (Capital Cities) and Major Regional Areas. For Rural and Remote Areas, we do not offer standard delivery, or an additional fee may be required. This policy also applies to oversized products that exceed 20kg or measure over 1 meter on any side. Please review these guidelines prior to placing an order to ensure smooth processing.