feat: Initialize Husqvarna 440 CH chainsaw project

- Create project structure with README.md and ISSUE_TEMPLATE.md - Document chainsaw specifications (50.9cc, X-TORQ engine) - Include maintenance schedules and intervals - Add carburetor factory settings (L: 1-2.25 turns, H: 1.25-1.5 turns, 11,200 RPM max) - Include fuel/oil specs (50:1 mix ratio) - Add resource links and video tutorials - Ready for issue tracking and maintenance documentation
2026-03-22 20:01:51 -04:00
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+# Husqvarna 440 CH - Chainsaw Maintenance Tracker
+
+---
+
+## 🪵 Chainsaw Information
+
+| Field | Value |
+|-------|-------|
+| **Year/Make/Model** | Husqvarna 440 (X-TORQ) |
+| **Engine** | 50.9cc 2-cycle single cylinder |
+| **Displacement** | 50.9 cc |
+| **Power Output** | ~3.0 kW (4.0 HP) |
+| **Weight** | ~5.8 kg (12.8 lbs) |
+| **Bar Length** | 18-20 inches (varies) |
+| **Fuel Tank Capacity** | 0.61 liters (0.16 gallons) |
+| **Oil Tank Capacity** | 0.28 liters (0.07 gallons) |
+| **Chain Speed** | 20 m/s |
+| **Vibration** | Front: 5.5 m/s², Rear: 6.0 m/s² |
+| **Noise Level** | 101 dB(A) |
+| **Date Started** | 2026-03-22 |
+
+---
+
+## 📋 Project Overview
+
+This repository tracks all maintenance, repairs, and issues for the Husqvarna 440 CH chainsaw. Each subfolder represents a specific issue or maintenance task with its own progress tracking.
+
+**Current Status:** 🔍 INITIAL PROJECT SETUP
+
+---
+
+## 📁 Issue Folders
+
+Each folder below represents a specific maintenance issue or repair:
+
+- **TBD** - [Issue description]
+
+---
+
+## 🔧 Recommended Maintenance
+
+### Regular Maintenance Intervals
+
+**After Every Use:**
+- Clean external surfaces
+- Check chain tension
+- Clean air filter (if dirty)
+- Check fuel/oil levels
+
+**Every 10 Hours:**
+- Clean spark arrestor screen
+- Check chain brake operation
+- Inspect chain for damage
+
+**Every 50 Hours:**
+- Replace air filter
+- Clean carburetor intake screen
+- Check and clean fuel filter
+- Inspect starter assembly
+
+**Every 100 Hours:**
+- Replace spark plug
+- Inspect clutch and drive sprocket
+- Check crankcase seals
+- Full carburetor service
+
+**Annually:**
+- Complete carburetor rebuild or replacement
+- Inspect all hoses and connections
+- Check cylinder and piston for wear
+- Full inspection by certified technician
+
+### Carburetor Settings (Factory Default)
+
+**Starting Point for Adjustment:**
+- **L Screw (Low Speed):** 1¼ - 2¼ turns out from seated
+- **H Screw (High Speed):** 1¼ - 1½ turns out from seated
+- **T Screw (Idle):** Adjust for smooth idle, chain should not rotate
+
+**Maximum RPM:** ~11,200 RPM
+
+### Fuel and Oil
+
+**Fuel Mixture:**
+- **Gasoline:** 90+ octane, ethanol-free preferred
+- **Oil:** Husqvarna 2-stroke oil or equivalent JASO FD/ISO L-EGD
+- **Mix Ratio:** 50:1 (2.6 oz oil per 1 gallon gas)
+
+**Chain Oil:**
+- Use high-quality chainsaw bar and chain oil
+- Do not use waste motor oil
+
+### Spark Plug
+- **Type:** NGK BPMR7A or equivalent
+- **Gap:** 0.5 mm (0.020 inches)
+- **Replacement:** Every 100 hours or annually
+
+### Air Filter
+- **Type:** Foam pre-filter + paper main filter
+- **Cleaning:** Wash in warm soapy water, oil lightly, let dry
+- **Replacement:** Every 50 hours or when damaged
+
+---
+
+## 🔧 Common Husqvarna 440 Issues
+
+### Known Problem Areas
+1. **Carburetor adjustment** - Common issue, especially after storage
+2. **Spark arrestor clogging** - Causes poor performance
+3. **Chain tension** - Needs frequent adjustment
+4. **Fuel system** - Old fuel, clogged filters
+5. **Spark plug fouling** - Rich mixture or old plug
+6. **Starter assembly** - Rope wear, spring issues
+7. **Chain brake** - Can stick or not engage properly
+8. **Clutch/drive sprocket** - Wear over time
+
+### X-TORQ Specific
+- **Emissions compliant** - May have limiter caps on carb screws
+- **Fuel efficient** - Lower fuel consumption than non-X-TORQ
+- **Low emissions** - May require precise tuning
+
+---
+
+## 📚 Service Resources
+
+### Official Resources
+- **Husqvarna Owner's Manual:** [Download PDF](https://www-static-nw.husqvarna.com/hbd/tdrdownload/v2/pub000046069/doc000082661/OM/Lj7NenyPQSPFIfBht6hsmWQXAKY)
+- **Husqvarna Parts Catalog:** https://www.husqvarna.com/us/support/440/
+- **Service Bulletins:** Contact Husqvarna dealer
+
+### Third-Party Resources
+- **Axe and Answered:** https://axeandanswered.com/factory-carb-settings-for-husqvarna-chainsaw/
+- **Chainsaw Nerds:** https://chainsawnerds.com/husqvarna-440-carb-adjustment-tips/
+- **Engineer Fix:** https://engineerfix.com/how-to-adjust-the-carburetor-on-a-husqvarna-440/
+
+### Video Resources
+- 📺 [YouTube: Husqvarna 440 carburetor adjustment](https://www.youtube.com/watch?v=m2tuwRoaAdU)
+- 📺 [YouTube: Husqvarna 440 carburetor repair](https://www.youtube.com/watch?v=anP6UlOMN4Y)
+- 📺 [YouTube: General Husqvarna carb adjustment](https://www.youtube.com/watch?v=Jq3P6qjaKJ0)
+
+---
+
+## 🔗 Related Projects
+
+- [Husqvarna Rancher 450](../Husqvarna-Rancher-450/) - Similar chainsaw project
+
+---
+
+## 📊 Revision History
+
+| Date | Change |
+|------|--------|
+| 2026-03-22 | Project created with specifications and maintenance schedule |
+
+---
+
+## 🔗 See Also
+
+- [ISSUE_TEMPLATE.md](./ISSUE_TEMPLATE.md) - Standard issue tracking template