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Add Husqvarna T435 chainsaw documentation

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- Update chainsaw.md with full specs, safety info, and procedures
- Add complete maintenance schedule (daily/weekly/monthly)
- Include troubleshooting guide and storage instructions
- Add Husqvarna T435 operator manual PDF

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content/equipment/farm-machinery/chainsaw.md
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---
title: Chainsaw
description: Chainsaw safety, operation, and maintenance guide
description: Husqvarna T435 chainsaw safety, operation, and maintenance guide
tags:
- equipment
- machinery
@ -10,116 +10,279 @@ tags:
# Chainsaw
*TBD: Add make and model*
Husqvarna T435 - Professional top-handle chainsaw for tree maintenance.
> [!danger] High Risk Equipment
> Chainsaws are extremely dangerous. Proper training is mandatory before use. Always wear full PPE.
> [!danger] High Risk Equipment - Training Required
> This is a **top-handle chainsaw** designed specifically for tree surgery by trained professionals. Due to the compact handle design, there is an increased risk of losing control. Proper training is **mandatory** before use. Always wear full PPE.
## Specifications
| Spec | Value |
|------|-------|
| Make/Model | *TBD* |
| Bar length | *TBD* |
| Engine | *TBD* |
| Fuel mix | *TBD* |
| Make/Model | Husqvarna T435 |
| Engine | 35.2 cc, 2-stroke |
| Power | 1.5 kW / 2.0 HP @ 10,000 rpm |
| Idle speed | 2900 rpm |
| Weight | 3.4 kg (without bar/chain) |
| Fuel tank | 0.26 L (260 ml) |
| Chain oil tank | 0.17 L (170 ml) |
| Fuel mix | 50:1 (petrol:2-stroke oil) |
| Spark plug | NGK CMR6H (gap: 0.65 mm) |
| Oil pump | Adjustable |
| Drive sprocket | 3/8" Spur 6, 1/4" Spur 8, or 0.325" Spur 7 |
| Storage location | *TBD* |
## Required PPE
- Chainsaw chaps or trousers
- Steel-capped boots (chainsaw rated preferred)
- Safety helmet with visor and ear defenders
- Chainsaw gloves
> [!warning] Mandatory Safety Equipment
> Most chainsaw accidents occur when the chain touches the operator. PPE reduces injury severity.
- Chainsaw chaps or trousers (with saw protection)
- Steel-capped boots (chainsaw rated, non-slip sole)
- Approved protective helmet with visor and ear defenders
- Chainsaw gloves (with saw protection)
- High-vis vest (if working near others)
- First-aid kit nearby
- Fire extinguisher and shovel nearby (fire risk from sparks)
## Safety Devices
The T435 includes these safety features:
| Device | Function |
|--------|----------|
| **Chain brake** | Stops chain on kickback - engages manually (push forward) or automatically via inertia |
| **Throttle lockout** | Prevents accidental throttle activation |
| **Chain catcher** | Catches chain if it breaks or derails |
| **Vibration damping** | 3-unit system reduces hand-arm vibration |
| **Start/stop switch** | Quick engine shutoff |
## Pre-Use Checks
1. Check fuel and bar oil levels
2. Inspect chain tension (should lift slightly off bar)
3. Check chain sharpness
4. Inspect bar for damage or wear
5. Check all guards and handles secure
6. Test chain brake function
7. Check for fuel leaks
1. Check fuel level (correct 50:1 mix)
2. Check bar oil level
3. Inspect chain tension - should lift slightly off bar but still move freely
4. Check chain sharpness
5. Inspect bar for damage or wear
6. Check all guards and handles are secure
7. Test chain brake function (push forward to engage, pull back to release)
8. Check for fuel leaks
9. Make sure muffler is correctly attached with no damage
10. Check vibration damping units for cracks or deformation
## Starting Procedure
1. Place saw on flat ground
2. Engage chain brake
3. Set choke (if cold)
4. Press primer bulb (if equipped)
5. Hold front handle firmly, foot on rear handle
6. Pull starter cord until engine fires
7. Adjust choke, restart if needed
8. Let warm up briefly
9. Release chain brake only when ready to cut
### Cold Start
1. Place saw on flat, stable ground
2. **Engage chain brake** (push front hand guard forward)
3. Set choke to CHOKE position
4. Press air purge bulb until fuel is visible
5. Hold front handle firmly, secure rear with foot or between knees
6. Pull starter rope until engine fires (1-4 pulls typically)
7. Move choke to RUN position
8. Pull starter rope until engine starts
9. Let warm up briefly
10. **Release chain brake** only when ready to cut
### Warm Start
1. Engage chain brake
2. Leave choke in RUN position (no choke needed)
3. Press air purge bulb a few times
4. Pull starter rope until engine starts
> [!warning] Safety Interlocks
> Never start the engine indoors - exhaust fumes are dangerous. Never start without guide bar and chain fitted - clutch can come loose.
## Safe Operation
### General Rules
### Critical Rules
- Never cut above shoulder height
- **Never use with one hand** - always use both hands with firm grip
- **Never cut above shoulder height**
- Right hand on top handle, left hand on front handle (regardless of handedness)
- Keep firm footing at all times
- Be aware of kickback zone (top quarter of bar tip)
- Never cut with the tip of the bar
- Keep chain brake engaged when walking
- Two hands on saw at all times when cutting
- **Never cut with the tip of the bar**
- Keep chain brake engaged when walking between cuts
- Observe surroundings for people and animals
- Do not use when fatigued or under influence of alcohol/medication
### Felling Trees
### Kickback Prevention
> [!danger] Advanced Skill
> Tree felling requires specific training. Do not attempt without proper instruction.
> [!danger] Kickback Warning
> Kickback occurs when the chain at the bar tip catches an object, causing a lightning-fast reverse reaction that kicks the bar up toward the operator.
- Assess fall zone (2x tree height)
- Check for hazards (power lines, structures, other trees)
- Plan escape route (45° back from fall direction)
- Use proper notch and back cut technique
Prevent kickback by:
- Never letting the bar tip contact anything
- Keeping chain sharp and properly tensioned
- Not overreaching
- Using low-kickback chain if available
- Maintaining focus - lack of concentration is a major cause
## Kickback Prevention
### Tree Work
Kickback occurs when the chain at the tip catches and throws the saw back. Prevent by:
> [!danger] Advanced Skill Required
> This top-handle saw is designed for use **in** trees by trained arborists. Tree work requires:
> - Specific professional training
> - Proper safety harness, ropes, and climbing equipment
> - Always secured with **two ropes** (never one)
> - Never attempt to catch falling sections
- Never let tip contact anything
- Keep chain sharp and properly tensioned
- Don't overreach
- Use low-kickback chain if available
For ground-level work, a regular chainsaw (with wider-spaced handles) is recommended.
## After Use
## Shutdown Procedure
1. Engage chain brake
2. Let engine idle, then turn off
3. Allow to cool before storage
4. Clean saw body and bar
5. Check chain tension
1. Release throttle and let engine idle
2. Push start/stop switch to STOP
3. Engage chain brake
4. Allow to cool before storage
5. Clean saw body and bar
6. Top up bar oil
7. Store in case or with bar cover
## Fuelling
> [!warning] Fuel Safety
> - Never refuel while engine is running or hot
> - Use approved fuel containers
> - No smoking or open flames nearby
| Item | Specification |
|------|---------------|
| Fuel type | Unleaded petrol + 2-stroke oil |
| Mix ratio | **50:1** (2% oil) |
| Fuel tank | 0.26 L |
| Chain oil | Quality bar and chain oil |
| Oil tank | 0.17 L |
### Adjusting Chain Oil Flow
The oil pump is adjustable. Use a screwdriver on the adjustment screw:
- **Clockwise** = increase oil flow
- **Counterclockwise** = decrease oil flow
> [!warning] Stop the engine before adjusting oil pump.
## Maintenance
| Task | Frequency |
|------|-----------|
| Check chain tension | Before each use |
| Clean air filter | After each use |
| Sharpen chain | When cutting slows |
| Check spark plug | Monthly |
| Replace chain | When worn |
| Professional service | Annually |
### Daily
- [ ] Clean external parts, ensure no oil on handles
- [ ] Check throttle trigger and lockout function
- [ ] Check vibration damping units for damage
- [ ] Clean and check chain brake
- [ ] Check chain catcher condition
- [ ] Turn guide bar, check lubrication hole, clean groove
- [ ] Verify guide bar and chain getting oil
- [ ] Check saw chain condition
- [ ] Sharpen chain and check tension
- [ ] Check drive sprocket wear
- [ ] Clean air intake on starter
- [ ] Ensure nuts and screws are tight
- [ ] Check stop switch function
- [ ] Check for fuel leaks
- [ ] Verify chain doesn't rotate at idle
- [ ] Check muffler is secure and undamaged
### Weekly
- [ ] Clean cooling system (air intake, fins, cooling channel)
- [ ] Check starter, rope and return spring
- [ ] Lubricate needle bearing with grease gun
- [ ] Remove burrs from guide bar edges with file
- [ ] Clean or replace spark arrestor screen on muffler
- [ ] Clean or replace air filter
- [ ] Clean between cylinder fins
### Monthly
- [ ] Check brake band (min 0.6mm thick)
- [ ] Check clutch centre, drum and spring
- [ ] Clean spark plug
- [ ] Clean external carburetor parts
- [ ] Check fuel filter and hose, replace if needed
- [ ] Check all cables and connections
- [ ] Empty and clean fuel tank
- [ ] Empty and clean oil tank
### Chain Sharpening
A sharp chain produces long, thick wood chips. A dull chain produces sawdust and requires excessive pressure.
Use a round file and file gauge (Husqvarna recommended). Key points:
- File from inside of cutting tooth outward
- Maintain correct filing angle
- Keep all teeth the same length
- Adjust depth gauge after every 3rd sharpening
> [!warning] Incorrect sharpening increases kickback risk significantly.
## Troubleshooting
| Problem | Possible Cause | Solution |
|---------|----------------|----------|
| Won't start | Flooded | Wait 10 mins, try without choke |
| | No fuel | Refuel with correct mix |
| | Spark plug fouled | Clean or replace plug |
| Chain won't turn | Chain brake on | Release brake |
| | No fuel | Refuel with correct 50:1 mix |
| | Spark plug fouled/wet | Clean and dry spark plug |
| | Spark plug loose | Tighten spark plug |
| | Incorrect electrode gap | Set to 0.65 mm |
| | Starter pawls blocked | Clean around pawls |
| Starts but stops | Incorrect fuel | Drain and refill with correct mix |
| | Idle speed wrong | Contact servicing dealer |
| | Clogged air filter | Clean or replace |
| | Clogged fuel filter | Replace fuel filter |
| Chain won't turn | Chain brake engaged | Pull guard rearward to release |
| | Chain too tight | Adjust tension |
| Cuts crooked | Dull chain | Sharpen or replace |
| | Uneven sharpening | Professional sharpen |
| Cuts crooked | Dull/uneven chain | Sharpen evenly or replace |
| Poor lubrication | Blocked oil channel | Clean guide bar oil hole and groove |
| Chain rotates at idle | Idle speed too high | Turn idle screw counterclockwise; if persists, contact dealer |
## Storage
- Store in dry location with bar cover
- Drain fuel if storing long-term
- Location: *TBD*
### Short-term
- Engage chain brake
- Attach transportation guard
- Store in dry location
### Long-term
1. Let engine cool completely
2. Remove and clean chain and guide bar groove
3. Empty fuel tank and run engine until dry
4. Empty chain oil tank
5. Clean the entire product
6. Attach transportation guard
7. Store in dry location
> [!tip] Storage Location
> *TBD - Add chainsaw storage location*
## Emergency Procedures
### Kickback Injury
1. Stop the chainsaw immediately
2. Apply first aid / call for help
3. Seek medical attention
### Fire
- Keep fire extinguisher nearby during operation
- Hot muffler and sparks can ignite dry materials
### If Chain Jams in Cut
1. **Stop the engine immediately**
2. Do not try to free while running
---
## Documentation
- [Husqvarna T435 Manual (PDF)](/equipment/farm-machinery/manuals/husqvarna-t435-manual.pdf) - Complete operator's manual
---
## Contact
| Service | Contact |
|---------|---------|
| Repairs/Service | *TBD* |
| Training | *TBD* |

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