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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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--- ---
title: Chainsaw title: Chainsaw
description: Chainsaw safety, operation, and maintenance guide description: Husqvarna T435 chainsaw safety, operation, and maintenance guide
tags: tags:
- equipment - equipment
- machinery - machinery
@ -10,116 +10,279 @@ tags:
# Chainsaw # Chainsaw
*TBD: Add make and model* Husqvarna T435 - Professional top-handle chainsaw for tree maintenance.
> [!danger] High Risk Equipment > [!danger] High Risk Equipment - Training Required
> Chainsaws are extremely dangerous. Proper training is mandatory before use. Always wear full PPE. > 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 ## Specifications
| Spec | Value | | Spec | Value |
|------|-------| |------|-------|
| Make/Model | *TBD* | | Make/Model | Husqvarna T435 |
| Bar length | *TBD* | | Engine | 35.2 cc, 2-stroke |
| Engine | *TBD* | | Power | 1.5 kW / 2.0 HP @ 10,000 rpm |
| Fuel mix | *TBD* | | 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* | | Storage location | *TBD* |
## Required PPE ## Required PPE
- Chainsaw chaps or trousers > [!warning] Mandatory Safety Equipment
- Steel-capped boots (chainsaw rated preferred) > Most chainsaw accidents occur when the chain touches the operator. PPE reduces injury severity.
- Safety helmet with visor and ear defenders
- Chainsaw gloves - 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) - 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 ## Pre-Use Checks
1. Check fuel and bar oil levels 1. Check fuel level (correct 50:1 mix)
2. Inspect chain tension (should lift slightly off bar) 2. Check bar oil level
3. Check chain sharpness 3. Inspect chain tension - should lift slightly off bar but still move freely
4. Inspect bar for damage or wear 4. Check chain sharpness
5. Check all guards and handles secure 5. Inspect bar for damage or wear
6. Test chain brake function 6. Check all guards and handles are secure
7. Check for fuel leaks 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 ## Starting Procedure
1. Place saw on flat ground ### Cold Start
2. Engage chain brake
3. Set choke (if cold) 1. Place saw on flat, stable ground
4. Press primer bulb (if equipped) 2. **Engage chain brake** (push front hand guard forward)
5. Hold front handle firmly, foot on rear handle 3. Set choke to CHOKE position
6. Pull starter cord until engine fires 4. Press air purge bulb until fuel is visible
7. Adjust choke, restart if needed 5. Hold front handle firmly, secure rear with foot or between knees
8. Let warm up briefly 6. Pull starter rope until engine fires (1-4 pulls typically)
9. Release chain brake only when ready to cut 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 ## 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 - Keep firm footing at all times
- Be aware of kickback zone (top quarter of bar tip) - Be aware of kickback zone (top quarter of bar tip)
- Never cut with the tip of the bar - **Never cut with the tip of the bar**
- Keep chain brake engaged when walking - Keep chain brake engaged when walking between cuts
- Two hands on saw at all times when cutting - Observe surroundings for people and animals
- Do not use when fatigued or under influence of alcohol/medication
### Felling Trees ### Kickback Prevention
> [!danger] Advanced Skill > [!danger] Kickback Warning
> Tree felling requires specific training. Do not attempt without proper instruction. > 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) Prevent kickback by:
- Check for hazards (power lines, structures, other trees) - Never letting the bar tip contact anything
- Plan escape route (45° back from fall direction) - Keeping chain sharp and properly tensioned
- Use proper notch and back cut technique - 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 For ground-level work, a regular chainsaw (with wider-spaced handles) is recommended.
- Keep chain sharp and properly tensioned
- Don't overreach
- Use low-kickback chain if available
## After Use ## Shutdown Procedure
1. Engage chain brake 1. Release throttle and let engine idle
2. Let engine idle, then turn off 2. Push start/stop switch to STOP
3. Allow to cool before storage 3. Engage chain brake
4. Clean saw body and bar 4. Allow to cool before storage
5. Check chain tension 5. Clean saw body and bar
6. Top up bar oil 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 ## Maintenance
| Task | Frequency | ### Daily
|------|-----------|
| Check chain tension | Before each use | - [ ] Clean external parts, ensure no oil on handles
| Clean air filter | After each use | - [ ] Check throttle trigger and lockout function
| Sharpen chain | When cutting slows | - [ ] Check vibration damping units for damage
| Check spark plug | Monthly | - [ ] Clean and check chain brake
| Replace chain | When worn | - [ ] Check chain catcher condition
| Professional service | Annually | - [ ] 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 ## Troubleshooting
| Problem | Possible Cause | Solution | | Problem | Possible Cause | Solution |
|---------|----------------|----------| |---------|----------------|----------|
| Won't start | Flooded | Wait 10 mins, try without choke | | Won't start | Flooded | Wait 10 mins, try without choke |
| | No fuel | Refuel with correct mix | | | No fuel | Refuel with correct 50:1 mix |
| | Spark plug fouled | Clean or replace plug | | | Spark plug fouled/wet | Clean and dry spark plug |
| Chain won't turn | Chain brake on | Release brake | | | 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 | | | Chain too tight | Adjust tension |
| Cuts crooked | Dull chain | Sharpen or replace | | Cuts crooked | Dull/uneven chain | Sharpen evenly or replace |
| | Uneven sharpening | Professional sharpen | | 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 ## Storage
- Store in dry location with bar cover ### Short-term
- Drain fuel if storing long-term - Engage chain brake
- Location: *TBD* - 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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