STIHL 391 Chainsaw – Price, Specs, Power, and Full Review
The STIHL 391 chainsaw, officially known as the STIHL MS 391, is one of the most versatile and powerful mid-range chainsaws in the STIHL lineup. Known for its reliability, balance between power and weight, and professional-grade performance, it’s a favorite among farmers, ranchers, and serious homeowners.
In this comprehensive guide, we’ll explore the Stihl 391 price, Stihl 391 specs, STIHL 391 HP, weight, common Stihl MS 391 problems, comparisons like Stihl 391 vs 362, and a full Stihl 391 review to help you decide if it’s the right saw for you.
Overview of the STIHL MS 391 Chainsaw
The STIHL MS 391 is designed for those who need a strong, durable chainsaw for demanding cutting tasks — from felling large trees to bucking firewood.
It combines high torque, a powerful 2-MIX engine, and ergonomic handling, making it ideal for both professional and heavy-duty home users.
The standout feature of the STIHL 391 is its 64.1 cc engine that produces plenty of power without being overly heavy or difficult to control.
STIHL 391 Specs – Technical Overview
Let’s take a closer look at the STIHL 391 specs that define its performance:
| Specification | STIHL MS 391 Specs |
|---|---|
| Engine Displacement | 64.1 cc |
| Engine Power (STIHL 391 HP) | 4.4 HP (3.3 kW) |
| Fuel Capacity | 600 ml |
| Oil Tank Capacity | 325 ml |
| STIHL 391 Weight | 6.2 kg (13.67 lbs) |
| Bar Length Options | 16” / 18” / 20” / 25” |
| Chain Pitch | 3/8” |
| Power-to-Weight Ratio | 1.4 kg per kW |
| Sound Pressure Level | 105 dB(A) |
These STIHL MS 391 Specs (cc and HP) show that it’s a high-powered chainsaw capable of handling large logs while maintaining smooth, efficient cutting.
STIHL 391 HP – Engine Performance and Power
The STIHL 391 HP rating stands at 4.4 horsepower, driven by a 64.1 cc 2-stroke engine. This means you get exceptional torque and power even at low RPMs — ideal for tough cuts.
This engine uses STIHL’s 2-MIX technology, which improves fuel efficiency by up to 20% and reduces emissions by nearly 50% compared to older models.
Thanks to its advanced combustion system, the STIHL MS 391 also delivers consistent power even under heavy loads — a big advantage for professionals cutting hardwood or dense timber. STIHL Fuel Injected Chainsaw – The Power and Innovation of the STIHL MS 500i
STIHL 391 Weight and Handling
Despite its power, the STIHL 391 weight is relatively moderate at just 6.2 kg (13.67 lbs) for the powerhead.
This balanced design, combined with anti-vibration technology and ergonomic handles, makes it easy to control during long cutting sessions.
For comparison:
- The lighter MS 362 weighs around 5.8 kg,
- While the heavier MS 661 weighs 7.4 kg.
This middle ground makes the MS 391 ideal for users who need both strength and maneuverability.
STIHL 391 Price – How Much Does It Cost?
The Stihl 391 price depends on your region, dealer, and whether the saw includes a guide bar and chain. On average:
| Region | STIHL 391 Price Range |
|---|---|
| USA | $699 – $799 USD |
| UK | £600 – £700 |
| Australia | AUD $1,250 – $1,400 |
| India | ₹60,000 – ₹80,000 |
| Europe (EUR) | €750 – €850 |
Buying from an authorized STIHL dealer ensures genuine parts, warranty, and the latest model version.
While slightly more expensive than homeowner models, the STIHL MS 391 price is justified by its power, durability, and ease of use — ideal for anyone needing a saw that can handle serious work. STIHL Battery Operated Chainsaw: Price, Models, and Full Review (2025 Guide)
STIHL MS 391 Review – Real Performance and User Experience
Users often describe the STIHL MS 391 as a “workhorse chainsaw” — one that starts easily, cuts aggressively, and runs smoothly for hours.
What Users Like:
✅ Excellent power-to-weight balance
✅ Durable engine and long-lasting components
✅ Easy start system (ElastoStart)
✅ Low vibration and ergonomic handle design
✅ Efficient fuel use and reduced emissions
What Could Be Better:
⚠️ Slightly heavier than the MS 362 for similar cutting tasks
⚠️ Air filter can clog faster in dusty conditions
⚠️ Not as high-revving as pro-level STIHL saws
Overall, the Stihl 391 review is overwhelmingly positive — it’s a reliable, powerful saw that’s perfect for heavy-duty tasks without being overkill.
STIHL MS 391 Problems – Common Issues and Fixes
Even a well-built saw like the MS 391 can experience minor issues if not properly maintained. Below are the most common Stihl MS 391 problems and how to address them:
1. Hard Starting or Flooding
Cause: Old or poor-quality fuel, dirty spark plug, or carburetor issues.
Fix: Replace fuel with a fresh 50:1 mix, clean or replace the spark plug, and clean the carburetor.
2. Loss of Power
Cause: Blocked air filter or clogged fuel filter.
Fix: Clean the air filter and replace the fuel filter regularly.
3. Overheating
Cause: Dirty cooling fins or extended use in high temperatures.
Fix: Keep air passages clean and allow the saw to cool between heavy cuts.
4. Chain Oil Leakage
Cause: Worn oil seals or loose fittings.
Fix: Check and replace damaged seals; store the saw upright to avoid leaks.
5. Excessive Vibration
Cause: Loose mounts or worn anti-vibration buffers.
Fix: Inspect and replace AV mounts during regular service.
Proper maintenance and genuine STIHL parts can prevent most of these Stihl 391 problems.
STIHL 391 vs 362 – Which One is Better?
A frequent question among buyers is how the Stihl 391 vs 362 comparison stacks up. Both are mid-size professional saws, but they cater to slightly different needs.
| Feature | STIHL MS 391 | STIHL MS 362 |
|---|---|---|
| Engine Displacement | 64.1 cc | 59.0 cc |
| Power Output | 4.4 HP | 4.6 HP |
| Weight | 6.2 kg | 5.8 kg |
| Technology | 2-MIX | M-Tronic (electronic carburetion) |
| Best Use | Farm & Ranch | Professional Forestry |
| Price | Slightly Lower | Slightly Higher |
The MS 391 offers simplicity, strength, and affordability, while the MS 362 is more high-tech and lightweight.
If you’re a farmer, landowner, or occasional pro user, the Stihl 391 is the better choice. For professional loggers who work all day in the woods, the MS 362’s M-Tronic system provides an advantage in responsiveness and fuel efficiency.
STIHL MS 391 Specs CC and Performance Summary
The STIHL MS 391 Specs (cc) highlight its balance between power and control. With a 64.1 cc engine producing 4.4 HP, the saw sits comfortably in the mid-pro class.
It’s ideal for:
- Felling medium to large trees
- Firewood cutting
- Logging and forestry work
- Clearing storm-damaged trees
In short, the STIHL 391 is built to handle both daily professional use and occasional heavy workloads with ease.
Maintenance Tips for the STIHL 391
To keep your STIHL MS 391 running like new:
- Use high-quality 2-stroke oil (STIHL HP Ultra recommended).
- Clean the air filter and spark arrestor screen regularly.
- Sharpen the chain frequently for smoother, safer cutting.
- Inspect the fuel lines, filters, and chain oil system every 3 months.
- Store the saw with drained fuel if not used for over 30 days.
Following these steps ensures long life and consistent performance.
FAQs About STIHL MS 391 Chainsaw
1. What is the STIHL 391 price?
The Stihl 391 price typically ranges from $699 to $799 USD, depending on location and bar length. In India, prices average between ₹60,000 and ₹80,000.
2. How many horsepower does the STIHL MS 391 have?
The STIHL 391 HP rating is 4.4 horsepower (3.3 kW), offering excellent torque and cutting power for its size.
3. What is the difference between the STIHL 391 and 362?
The Stihl 391 uses a traditional carburetor and 2-MIX engine, while the Stihl 362 has an advanced M-Tronic fuel system and slightly better power-to-weight ratio.
4. What are common STIHL MS 391 problems?
Typical Stihl MS 391 problems include hard starting, air filter clogging, overheating, and oil leakage — all preventable with regular maintenance.
5. How much does the STIHL 391 weigh?
The STIHL 391 weight is 6.2 kg (13.67 lbs) for the powerhead only, making it balanced and comfortable for extended use.
Final Verdict – Is the STIHL 391 Worth It?
Absolutely. The STIHL 391 is one of the best all-around chainsaws for serious users. It’s strong, efficient, and built to last. With 4.4 HP, a 64.1 cc engine, and rugged German engineering, it’s a powerhouse for firewood, forestry, and farm use.
While slightly heavier than the MS 362, the STIHL MS 391 offers incredible durability and raw cutting power at a great price point.
If you need a saw that can do it all — from felling large trees to splitting logs — the STIHL MS 391 remains one of the smartest choices in STIHL’s entire lineup.
