Husqvarna Power Axe 350i Problems | Battery Chainsaw Guide
The Husqvarna Power Axe 350i brings professional-grade battery chainsaw performance to serious homeowners and property managers. Part of Husqvarna’s 40V battery system, it delivers gas-like cutting power without exhaust emissions, fuel mixing or pull-start hassles. This saw handles firewood, storm cleanup and property maintenance with impressive capability. When issues arise, this guide helps diagnose and resolve common problems so you can get back to cutting.
Table of Contents
- Specifications
- Battery System
- Motor Issues
- Chain and Bar
- Oiling System
- Maintenance
- Troubleshooting Tips
- Frequently Asked Questions
Specifications
The Power Axe 350i sits at the top of Husqvarna’s consumer battery chainsaw lineup.
| Feature | Specification |
|---|---|
| Bar length | 18” |
| Chain speed | 65 ft/s |
| Weight (bare) | 9.5 lbs |
| Weight (with battery) | 13.2 lbs |
| Battery system | 40V BLi series |
| Chain pitch | 3/8” LP |
| Chain gauge | .050” |
| Oil tank capacity | 7 oz |
The Power Axe 350i delivers gas-equivalent performance for homeowner cutting tasks
The 350i uses all Husqvarna 40V BLi batteries, making it compatible with Husqvarna’s full lineup of 40V outdoor power equipment including blowers, trimmers and lawn mowers. Higher capacity batteries provide longer runtime - the BLi300 (7.5Ah) nearly doubles cutting time compared to the BLi200 (5.0Ah).
Husqvarna built this saw with a brushless motor that delivers consistent power throughout the battery discharge cycle. Unlike brushed motors that lose torque as battery voltage drops, the 350i maintains cutting performance until the battery is nearly depleted.
Battery System
Battery-related issues are the most common problems with the Power Axe 350i. Understanding the BLi system helps troubleshoot effectively.
Saw Won’t Power On
When you press the trigger and nothing happens, work through these checks systematically.
Safety interlock verification:
- Battery fully inserted - listen for the audible click
- Battery has charge - press the gauge button on the battery
- Chain brake lever pushed forward (disengaged position)
- Trigger lockout button pressed before pulling trigger
If still no power after safety checks:
- Remove battery completely, wait 10 seconds, reseat firmly
- Clean battery contacts with dry cloth or contact cleaner
- Try a different BLi battery if available
- Inspect battery and saw contacts for visible damage or corrosion
- Check for debris in the battery slot preventing full insertion
The 350i has multiple electronic protections that prevent operation. If any safety condition isn’t met, the saw simply won’t respond. This is intentional - it prevents accidental starts.
Understanding BLi Battery Options
| Battery Model | Capacity | Weight | Typical Runtime |
|---|---|---|---|
| BLi100 | 2.6Ah | 1.3 lbs | 15-25 minutes |
| BLi200 | 5.0Ah | 2.4 lbs | 30-45 minutes |
| BLi300 | 7.5Ah | 3.5 lbs | 50-70 minutes |
Runtime varies significantly based on cutting demands. Bucking 6” hardwood logs uses battery faster than pruning small branches.
BLi batteries feature built-in charge indicators - press the button to check remaining charge
Short Runtime
Shorter-than-expected runtime frustrates users. Several factors affect how long you can cut on a charge.
Normal runtime reducers:
- Large diameter cuts - Cutting through bigger wood draws more power
- Hardwood species - Oak and hickory demand more than pine or poplar
- Dull chain - This is huge. A dull chain can cut runtime in half by forcing the motor to work harder
- Cold weather - Batteries deliver less capacity below 50°F
- Battery age - All lithium batteries lose capacity over time (typically 20% loss after 300-500 cycles)
Maximizing runtime:
- Keep chain sharp - single most important factor
- Let cold batteries warm to room temperature before use
- Don’t force the saw through cuts - let the chain do the work
- For big cutting sessions, bring a spare battery
Battery Won’t Charge
When the charger won’t charge your BLi battery, troubleshoot methodically.
Charger diagnostic steps:
- Verify the power outlet works (plug in something else)
- Check charger LED indicators when battery is inserted
- Clean battery and charger contacts with isopropyl alcohol
- Ensure battery is at room temperature (40-100°F)
LED indicator meanings:
- Solid green = fully charged
- Flashing green = charging in progress
- Red = error condition
- Flashing red = temperature out of range
Temperature-related charging failures are common. Batteries won’t charge if too hot (just used) or too cold (stored in garage during winter). Bring the battery inside and let it reach room temperature before charging.
If charging still fails:
- Try a different battery in the same charger
- If different battery charges, original battery may be damaged
- If no battery charges, charger may be faulty
Motor Issues
The brushless motor in the 350i is reliable but can exhibit issues under certain conditions.
Motor Won’t Engage
When the motor doesn’t respond despite pressing the trigger, the saw’s safety systems are likely preventing operation.
Systematic diagnosis:
- Battery properly seated and charged
- Chain brake lever in forward (disengaged) position
- Trigger lockout pressed before trigger squeeze
- No visible damage to housing or controls
Motor clicks but doesn’t spin:
- Chain brake is engaged - most common cause
- Chain is binding on the bar
- Overload protection has tripped (let saw cool 5 minutes)
- Foreign object jamming sprocket
The chain brake can sometimes partially engage without being obvious. Push the front hand guard firmly forward to ensure full disengagement.
Motor Stalls During Cutting
The motor stopping mid-cut indicates the system is protecting itself from damage.
Common stall causes:
- Dull chain - The #1 cause. Dull teeth increase cutting resistance dramatically, overloading the motor.
- Chain too tight - Excessive tension creates friction that the motor can’t overcome under load
- Low battery - Insufficient voltage to maintain power under load
- Thermal protection - Motor overheated from heavy use; let it cool 10-15 minutes
- Pinched bar - Wood closing on the bar during cuts binds the chain
Check chain sharpness regularly - dull chains cause most motor overload issues
Reduced Power
If the motor runs but seems weaker than normal, address these causes in order.
Power loss causes (most to least common):
- Dull chain - Sharp chains cut with minimal motor effort
- Partially discharged battery - Charge fully before diagnosing further
- Incorrect chain tension - Too tight creates drag, too loose wastes energy
- Dirty bar groove - Packed sawdust interferes with chain movement
- Motor brush wear - Rare on brushless motors but possible after years of heavy use
Chain and Bar
The cutting system needs regular attention for safe, efficient operation.
Chain Won’t Move
When the motor runs but the chain doesn’t turn, something is interfering with chain rotation.
Diagnosis sequence:
- Check chain brake - Push hand guard forward firmly
- Inspect for derailed chain - Chain jumped off bar rails
- Check tension - Overtightened chain can’t rotate
- Look for debris - Wood chips or debris jamming sprocket area
- Examine drive links - Bent or broken links prevent rotation
Chain Derails Frequently
Repeated derailment indicates an underlying problem that needs correction.
Derailment causes:
- Improper tension - Chain too loose allows it to jump the bar
- Worn bar rails - Rails spread over time, allowing chain to escape
- Stretched chain - Old chains elongate and fit poorly
- Bar damage - Bent or burred bar edges derail chains
- Wrong chain - Incorrect pitch or gauge for the bar
Proper tensioning procedure:
- Loosen bar cover nuts (don’t remove)
- Turn the tool-free tensioner clockwise
- Chain should lift 1/4” from bar bottom and snap back
- Hold bar nose up while tightening cover nuts
- Verify chain pulls freely around bar by hand
Chain Sharpness
A sharp chain is essential for battery chainsaw performance. Dull chains waste battery power fighting through wood instead of cutting cleanly.
Signs your chain needs sharpening:
- Fine sawdust instead of chips
- Must push hard to cut
- Saw pulls to one side (uneven tooth wear)
- Smoke from the cut
- Chattering or bouncing during cuts
Sharpening options:
- File by hand using correct diameter round file
- Electric sharpener for faster results
- Professional sharpening service ($5-10 per chain)
Sharpening frequency: Touch up every 2-3 hours of cutting. More often if hitting dirt or cutting dirty wood.
Oiling System
The automatic oiler keeps the bar and chain lubricated. Running without proper lubrication destroys chains quickly.
No Oil Reaching Chain
Diagnostic steps:
- Check oil tank through sight window - add oil if low
- Run the saw briefly and look for oil on the chain
- Inspect the oil outlet port for blockage
- Clean the bar groove where oil flows to the chain
- Check that the oil pump pickup tube isn’t clogged
Check oil level before each use through the sight window
Testing oil output: Remove the bar and chain. Run the saw briefly over cardboard. Oil should spray from the output port. If no oil appears, the pump may need service.
Oil Consumption
The 350i uses bar oil quickly compared to some saws - this is normal. Husqvarna designed it to provide ample lubrication.
Normal oil use: Empty oil tank roughly coincides with one battery discharge Excessive use: Oil draining when saw is stored indicates a seal issue
Oil selection: Use quality bar and chain oil. Avoid motor oil - it’s too thin and slings off. Winter-weight bar oil flows better in cold weather.
Maintenance
Regular maintenance keeps the Power Axe 350i performing reliably for years.
Before Each Use
- Check oil level through sight window
- Verify chain tension
- Inspect chain for dull or damaged teeth
- Test chain brake function
- Confirm battery has adequate charge
After Each Use
- Clean sawdust from around the sprocket cover
- Wipe down the bar
- Store with chain brake disengaged to prevent spring fatigue
Monthly (or every 10 hours of use)
- Remove bar and clean groove thoroughly
- Flip bar to promote even rail wear
- Deep clean the saw body and air vents
- Sharpen or replace chain as needed
- Inspect bar for damage or excessive wear
Seasonal Storage
- Remove battery and store separately at 40-60% charge
- Clean saw thoroughly
- Apply light oil to chain and bar
- Store indoors away from moisture
- Check battery charge monthly and top up if below 20%
Troubleshooting Tips
Quick reference for common issues:
| Problem | Likely Cause | Solution |
|---|---|---|
| Won’t start | Chain brake engaged | Push guard forward |
| Short runtime | Dull chain | Sharpen chain |
| Motor stalls | Chain too tight | Adjust tension |
| No oil | Empty tank | Add bar oil |
| Chain derails | Loose tension | Tighten properly |
| Weak cutting | Dull chain | Sharpen or replace |
Common Parts
| Part | Description | Cost |
|---|---|---|
| Chain (18”) | H37 .050” | $20-30 |
| Bar (18”) | Replacement bar | $35-50 |
| BLi200 Battery | 5.0Ah | $179-219 |
| BLi300 Battery | 7.5Ah | $249-299 |
| QC330 Charger | Fast charger | $89-129 |
| Bar oil | Various brands | $10-15/qt |
Warranty
Husqvarna warranty coverage:
- Tool: 3 years for residential use
- Battery: 2 years
- Commercial use reduces warranty to 90 days
Register your product at Husqvarna’s website to activate full warranty coverage.
Frequently Asked Questions
How does the Power Axe 350i compare to gas Husqvarna saws?
The 350i matches or exceeds Husqvarna’s smaller gas saws (135 Mark II, 440) for most homeowner tasks. It won’t replace a 455 Rancher for felling large trees or all-day production work, but it handles firewood, limbing and storm cleanup impressively well. The convenience of battery power - no fuel mixing, instant starts, quiet operation - makes it preferable for many users.
Can I use the Power Axe 350i in rain?
Not recommended. While the saw has some weather resistance, battery electronics and water don’t mix well. Light moisture is unlikely to cause immediate problems, but regular wet use can lead to corrosion and electrical issues. If you must cut in damp conditions, keep the battery area as dry as possible and dry the saw thoroughly before storage.
What replacement chain should I use?
Husqvarna H37 chains are the OEM option. Compatible alternatives include Oregon 91PX or 91VXL chains in the correct length for your bar. Stick with low-kickback chains unless you’re an experienced user.
Why does my saw vibrate more than when new?
Increased vibration usually indicates chain issues - either dull teeth, damaged teeth, or a bent tie strap. Inspect the chain carefully. A severely worn bar can also cause vibration. Check bar rails for spreading.
How long should the battery last before replacement?
BLi batteries typically deliver 500+ charge cycles before significant capacity loss. With normal homeowner use (10-20 charges per year), batteries should last 5-7 years or more. Heavy users may see 3-4 years.
Can I use other 40V batteries from different brands?
No. Husqvarna BLi batteries are proprietary. Other manufacturers’ 40V batteries won’t fit and attempting to modify them voids warranties and creates safety hazards.
Related Guides
- Husqvarna 455/460 Rancher Problems
- EGO CS1800/CS2005 Chainsaw Problems
- Milwaukee M18 Chainsaw Problems
- Chainsaw Won’t Start
The Husqvarna Power Axe 350i delivers serious cutting power without gas engine hassles. Keep the chain sharp, oil flowing and battery charged for years of reliable service. For most homeowner cutting tasks, this saw performs as well as gas while being quieter, cleaner and easier to maintain.