Quick answer: The Husqvarna 350 features a 49.4 cc (51.7 cc on late E-Tech models) 2-stroke engine producing 3.1 hp (2.3 kW) at 9,000 RPM. It weighs 10.6 lbs (4.8 kg) dry without cutting gear and runs best with a 16-inch or 18-inch guide bar using .325" pitch chain at a 50:1 fuel mixture.
Husqvarna 350 Chainsaw Specs: Complete Engine & Performance Data
Understanding the exact engineering specifications of the Husqvarna 350 explains why it continues to command strong value on the used market. The original model debuted with a 49.4 cc cylinder bore of 44 mm and a 32.5 mm stroke. Later EPA-compliant E-Tech variants received a minor cylinder upgrade to a 45 mm bore, bumping total displacement to 51.7 cc. Despite the slight displacement increase, both versions deliver roughly 3.1 horsepower (2.3 kW) and share identical crankcase dimensions. The engine reaches its peak power output at 9,000 RPM, with a maximum unloaded speed governed at 13,000 RPM by a Walbro or Zama diaphragm carburetor.
At a dry weight of just 10.6 lbs (4.8 kg) for the powerhead, the Husqvarna 350 boasts an impressive power-to-weight ratio for a mid-tier chainsaw. It delivers enough low-end grunt to pull through dense hardwoods like oak, hickory, and maple without stalling out under load. Fluid capacities are well proportional: the fuel tank holds 0.5 liters (16.9 fl oz) of mixed gas, while the bar oil reservoir holds 0.25 liters (8.4 fl oz). Under normal cutting conditions, a full tank of fuel exhausts at nearly the same time as the chain oil, preventing catastrophic dry-bar running.
| Specification Category | Factory Technical Parameter |
|---|---|
| Engine Displacement | 49.4 cc (Standard) / 51.7 cc (Late E-Tech) |
| Cylinder Bore & Stroke | 44 mm (45 mm E-Tech) x 32.5 mm stroke |
| Horsepower / Power Output | 3.1 hp (2.3 kW) @ 9,000 RPM |
| Maximum Operating Speed | 13,000 RPM (Unloaded maximum) |
| Powerhead Dry Weight | 10.6 lbs (4.8 kg) |
| Recommended Bar Lengths | 16 inches to 18 inches (20 inches max) |
| Standard Chain Pitch & Gauge | .325" pitch / .050" or .058" gauge |
| Fuel / Oil Ratio | 50:1 (89+ Octane + 2-stroke air-cooled oil) |
| Fuel Tank Capacity | 0.5 L (16.9 fl oz) |
| Bar Oil Capacity | 0.25 L (8.4 fl oz) |
Cutting Equipment, Bar Lengths, and Chain Pitch Setup
Selecting the right bar and chain combination is critical to preserving the engine life of your Husqvarna 350. The saw came equipped from the factory with a 7-tooth .325" pitch spur sprocket designed to drive semi-chisel or full-chisel chain in either .050" or .058" gauge. While the owner's manual suggests the powerhead can accept guide bars from 13 to 20 inches, running a 16-inch or 18-inch bar gives you the sweet spot between cutting reach and engine speed. An 18-inch setup allows you to comfortably cut medium-sized firewood logs without putting excessive load on the centrifugal clutch.
Mounting a 20-inch guide bar on the 350 is generally not recommended for regular hardwood cutting. The extra drive links add drag, causing the engine speed to drop below its optimum 9,000 RPM powerband during deep cuts. Furthermore, the oil pump struggles to deliver adequate lubrication across the entire length of a 20-inch bar when working in dry timber. Sticking to a high-quality 16-inch or 18-inch laminated bar running .325" chain ensures maximum chain acceleration, clean chip clearance, and long clutch life.
Pro tip: On used Husqvarna 350 models, always check the plastic engine riser bucket under the cylinder base. Heat over time can cause the cylinder bolts to loosen, drawing air into the crankcase and causing a lean condition that melts the piston. Whenever doing a teardown, replace the plastic bearing clamp with the metal clamp from a Husqvarna 353 or 346XP to permanently lock down the cylinder.
Key Features and Mechanical Design Advantages
The Husqvarna 350 stands out because it inherited several internal design features directly from Husqvarna’s professional logging tools. Central to its operator comfort is the LowVib anti-vibration system. Rather than using standard rubber bushings that degrade when exposed to chain oil and fuel spills, the 350 uses steel coil springs to isolate the rear handle and front handlebar from the engine housing. This drastically reduces high-frequency motor vibration passed to your hands, letting you work longer without palm numbness or fatigue.
Air filtration on the 350 is managed by Husqvarna’s Air Injection centrifugal cleaning system. The engine flywheel acts as a fan, pulling raw intake air and throwing large dust particles and wood chips outward before the air ever reaches the filter housing. This extends cleaning intervals significantly compared to standard filter designs. Accessing the air filter and spark plug requires no special tools thanks to the quick-release snap-lock top cover, making field inspection straightforward during intense work days.
The saw also features an adjustable automatic oil pump, allowing you to fine-tune oil delivery based on wood hardness and bar length. Turning the adjustment screw on the underside of the crankcase increases oil output for wide-diameter hardwood cuts or reduces flow when cutting soft pine with a short bar. For emergency stop situations, the double-acting inertia chain brake halts chain movement within milliseconds of kickback, working either automatically via inertia or manually through wrist contact with the front handguard.
Maintenance Practices and Common Operating Issues
To keep the Husqvarna 350 running reliably, routine mechanical attention is mandatory. Always mix fuel at a precise 50:1 ratio using fresh unleaded gas with an octane rating of 89 or higher combined with high-quality 2-stroke air-cooled engine oil. Avoid using ethanol fuel higher than E10, as ethanol attracts moisture and causes lean running conditions in diaphragm carburetors. When storing the saw over the winter, drain the fuel tank completely and run the engine dry to prevent varnish buildup inside the metering chamber.
Beyond fuel care, pay close attention to basic safety gear and chain maintenance. Inspect your drive sprocket for deep wear grooves every three or four chain changes, and clean out the bar groove and oil passage holes daily. Whenever operating any chainsaw, ensure you are wearing essential personal protective equipment (PPE), including cut-resistant chainsaw chaps, heavy leather boots, eye protection, and helmet system with integrated ear muffs. Proper field care coupled with defensive cutting techniques guarantees that your Husqvarna 350 remains a dependable firewood cutter for decades.
When shopping for replacement parts or maintaining an existing machine, look out for common wear points on this specific model. The fuel line inside the tank tends to dry rot over time, leading to hard starting or unexpected stalling when tilting the saw on its side. Inspecting the intake boot and impulse hose for cracks during annual tune-ups will keep air leaks at bay and maintain crisp throttle response across the entire rev range.
Final Recommendation
If you own or are looking to purchase a used Husqvarna 350, pair it with an 18-inch bar and a fresh loop of .325" pitch chain for the ultimate balance of weight and cutting power. Inspect the cylinder mounting bolts immediately to prevent lean air leaks, always run 89+ octane ethanol-free fuel at 50:1, and keep the chain razor-sharp to maximize engine performance without bogging down in hardwood.
Frequently Asked Questions
What is the fuel mix ratio for a Husqvarna 350 chainsaw?
The Husqvarna 350 requires a 50:1 gas-to-oil mix ratio. Combine 2.6 fluid ounces of high-quality two-stroke engine oil with one gallon of unleaded gasoline rated at 89 octane or higher. Ethanol-free gas is strongly recommended to prevent fuel system degradation.
What is the biggest bar you can put on a Husqvarna 350?
While the powerhead can physically accept up to a 20-inch guide bar, the recommended maximum practical length is 18 inches. Running an 18-inch bar maintains fast chain speed and proper bar oiling, whereas a 20-inch bar strains the 50cc engine in dense hardwoods.
How many horsepower does a Husqvarna 350 have?
The Husqvarna 350 produces approximately 3.1 horsepower (2.3 kW) at 9,000 RPM. This gives it ample cutting torque for felling small trees, bucking firewood, and limb clearing.
What year was the Husqvarna 350 made?
Husqvarna manufactured the 350 chainsaw from the late 1990s through approximately 2008, when it was superseded by newer models designed to meet updated environmental emissions regulations.
Sources
- Husqvarna Official Technical Documentation & Operator Manuals
- ANSI B175.1 Gasoline-Powered Chain Saws Safety Requirements
- OSHA 1910.266 Logging Operations Standards
