Stihl 031AV Parts Guide (7 Must-Know Tips For Vintage Saws)

Stihl 031AV: A Legacy of Power and Reliability

The Stihl 031AV is more than just a chainsaw; it’s a symbol of durability and German engineering. These saws were built to withstand rigorous use, and many are still in operation today. Their robust construction and relatively simple design make them easier to repair than modern saws, provided you can find the right parts.

Why the Stihl 031AV Still Matters

Durability: These saws were built to last, with heavy-duty components and a focus on reliability.
Simplicity: The relatively simple design makes them easier to diagnose and repair.
Power: The 031AV packs a punch, capable of handling a wide range of cutting tasks.
Collectibility: Many enthusiasts appreciate these saws for their historical significance and classic design.

The Challenge of Vintage Parts

Finding parts for a vintage saw like the Stihl 031AV can be tricky. Original parts are becoming increasingly scarce, and aftermarket options can vary significantly in quality. Knowing where to look and what to look for is crucial to keeping your saw running smoothly.

7 Must-Know Tips for Sourcing Stihl 031AV Parts

Over the years, I’ve developed a few key strategies for finding the parts I need for my vintage saws. These tips will help you navigate the world of aftermarket parts, identify reliable sources, and avoid common pitfalls.

1. Know Your Saw’s Specifics

The Stihl 031AV was produced over several years, and there may be slight variations in parts depending on the specific model and production year. Before you start searching for parts, take the time to identify your saw’s serial number and any other identifying marks. This information will help you narrow down your search and ensure you’re ordering the correct parts.

Serial Number Location: The serial number is usually stamped on the engine housing or near the starter assembly.
Model Variations: Be aware of any specific variations of the 031AV, such as the 031AVE (with electronic ignition).
Documentation: If possible, find a parts diagram or service manual specific to your saw’s production year.

Personal Story: I once ordered a carburetor for my 031AV, only to discover it didn’t fit because I hadn’t accounted for a minor design change in later models. Lesson learned: always double-check the specifics!

2. Master the Art of Online Research

The internet is your best friend when searching for Stihl 031AV parts. Several online retailers specialize in vintage chainsaw parts, and you can often find original or high-quality aftermarket options. However, it’s essential to be discerning and do your research before making a purchase.

Reputable Retailers: Stick to well-known and reputable retailers specializing in chainsaw parts.
Online Forums: Online chainsaw forums and communities can be valuable resources for finding parts and getting recommendations.
eBay and Online Marketplaces: While you can find good deals on eBay and other online marketplaces, be sure to check the seller’s feedback and carefully review the product description.

Example: I’ve had good luck finding hard-to-find parts on eBay, but I always make sure to ask the seller specific questions about the part’s condition and compatibility before bidding.

3. Explore Local Options: Small Engine Repair Shops and Salvage Yards

Don’t overlook local resources! Small engine repair shops and salvage yards can be goldmines for vintage chainsaw parts. These businesses often have a stock of used parts from saws that are beyond repair, and you might be able to find what you need at a reasonable price.

Small Engine Repair Shops: Call local small engine repair shops and ask if they have any Stihl 031AV parts in stock.
Salvage Yards: Check with local salvage yards that specialize in outdoor equipment or small engines.
Local Chainsaw Clubs: Join a local chainsaw club or organization – these groups often have members who are knowledgeable about vintage saws and may have parts to spare.

Insight: I once found a complete carburetor assembly for my 031AV at a local small engine repair shop for a fraction of the price of a new aftermarket unit.

4. Learn to Identify Quality Aftermarket Parts

Original Stihl parts are ideal, but they’re not always available. In many cases, you’ll have to rely on aftermarket parts. The quality of aftermarket parts can vary significantly, so it’s essential to know what to look for.

Material Quality: Look for parts made from high-quality materials that are durable and resistant to wear and tear.
Manufacturing Precision: Check for precise machining and tight tolerances. Poorly manufactured parts can cause performance problems and premature failure.
Brand Reputation: Stick to reputable brands that are known for producing quality aftermarket parts.

Warning: I’ve learned the hard way that cheap, low-quality aftermarket parts can end up costing you more in the long run. It’s better to invest in a slightly more expensive, higher-quality part that will last.

5. Focus on Essential Components First

When restoring a vintage saw, it’s often best to focus on the essential components first. These are the parts that are most likely to wear out or fail over time and that are critical to the saw’s performance.

Carburetor: The carburetor is responsible for mixing fuel and air, and it’s often one of the first parts to fail on a vintage saw.
Ignition System: The ignition system (including the spark plug, coil, and points) is responsible for igniting the fuel mixture.
Fuel Lines and Filter: Fuel lines and filters can become brittle and clogged over time, leading to fuel delivery problems.
Piston and Cylinder: The piston and cylinder are the heart of the engine, and they can wear out over time due to friction and heat.

Tip: Before replacing any parts, try cleaning and inspecting them thoroughly. Sometimes, a good cleaning is all that’s needed to restore proper function.

6. Consider Used Parts as a Viable Option

Don’t be afraid to consider used parts, especially for non-critical components. Used parts can be a cost-effective way to keep your saw running, and they can often be just as good as new aftermarket parts.

Inspect Carefully: When buying used parts, inspect them carefully for signs of wear, damage, or corrosion.
Ask Questions: Ask the seller about the part’s history and condition.
Negotiate Price: Don’t be afraid to negotiate the price, especially if the part is in less-than-perfect condition.

Experience: I’ve salvaged several useful parts from old saws that were beyond repair, including a perfectly good fuel tank and a set of clutch springs.

7. Don’t Underestimate the Power of a Good Cleaning

Before you start replacing parts, take the time to thoroughly clean your saw. Dirt, grime, and old fuel can wreak havoc on a chainsaw’s performance, and a good cleaning can often resolve many common problems.

Carburetor Cleaning: Disassemble the carburetor and clean it thoroughly with carburetor cleaner.
Fuel Tank Cleaning: Drain the fuel tank and clean it with a solvent.
Air Filter Cleaning: Clean or replace the air filter.
Cooling Fins Cleaning: Clean the cooling fins on the cylinder to ensure proper engine cooling.

Pro Tip: I use compressed air to blow out any remaining debris after cleaning the carburetor and other components.

Essential Stihl 031AV Parts: A Closer Look

Now that you know where to look for parts, let’s take a closer look at some of the most essential components of the Stihl 031AV and what to look for when replacing them.

Carburetor

The carburetor is arguably the most critical component for proper engine function. Over time, carburetors can become clogged with varnish and debris, leading to poor performance, hard starting, and stalling.

Common Issues: Clogged jets, worn needles, and leaking gaskets.
Replacement Options: New aftermarket carburetors are readily available, but make sure to choose a reputable brand. Rebuild kits are also available for those who prefer to rebuild their existing carburetor.
Adjustment: After replacing the carburetor, you’ll need to adjust the high and low-speed needles to ensure proper fuel mixture.

Technical Detail: The Stihl 031AV typically uses a Tillotson or Walbro carburetor. Make sure to identify the correct carburetor model for your saw before ordering parts.

Ignition System

The ignition system is responsible for generating the spark that ignites the fuel mixture. A faulty ignition system can cause hard starting, misfires, and a complete lack of spark.

Common Issues: Faulty spark plug, worn points, and a failing ignition coil.
Replacement Options: New spark plugs are readily available, and aftermarket ignition coils and points are also available.
Testing: Use a spark tester to check for spark at the spark plug. If there’s no spark, check the points and coil.

Measurement: The spark plug gap should be set to the manufacturer’s specification, typically around 0.020 inches.

Fuel System

The fuel system is responsible for delivering fuel from the fuel tank to the carburetor. Problems with the fuel system can cause fuel starvation, leading to poor performance and stalling.

Common Issues: Clogged fuel filter, cracked fuel lines, and a leaking fuel tank.
Replacement Options: New fuel filters and fuel lines are readily available. Fuel tanks can be more difficult to find, but used options are often available.
Inspection: Inspect the fuel lines for cracks and leaks. Replace the fuel filter regularly.

Best Practice: Use fresh, high-quality fuel mixed with the correct ratio of two-stroke oil.

Piston and Cylinder

The piston and cylinder are the heart of the engine, and they can wear out over time due to friction and heat. A worn piston or cylinder can cause a loss of compression, leading to poor performance and difficulty starting.

Common Issues: Scored cylinder walls, worn piston rings, and a damaged piston.
Replacement Options: New piston and cylinder kits are available, but they can be expensive.
Inspection: Check the cylinder walls for scoring or damage. Inspect the piston rings for wear and breakage.

Case Study: I once rebuilt a Stihl 031AV with a severely scored cylinder. After replacing the piston and cylinder, the saw ran like new.

Oil Pump

The oil pump is responsible for lubricating the chain and bar. A faulty oil pump can cause the chain to run dry, leading to premature wear and damage.

Common Issues: Clogged oil passages, a worn oil pump, and a leaking oil line.
Replacement Options: New oil pumps are available, but they can be difficult to install.
Testing: Check the oil flow to the chain. If there’s no oil flow, check the oil pump and oil lines.

Maintenance Tip: Use high-quality bar and chain oil to keep the chain and bar properly lubricated.

Step-by-Step Guide: Replacing Common Stihl 031AV Parts

Now, let’s walk through the process of replacing some common Stihl 031AV parts. These step-by-step instructions will help you get the job done right.

Replacing the Carburetor

Remove the Air Filter: Remove the air filter cover and the air filter.
Disconnect Fuel Lines: Disconnect the fuel lines from the carburetor.
Remove Linkage: Disconnect the throttle linkage and choke linkage from the carburetor.
Remove Carburetor: Remove the carburetor mounting bolts and remove the carburetor.
Install New Carburetor: Install the new carburetor in the reverse order of removal.
Adjust Carburetor: Adjust the high and low-speed needles to the manufacturer’s specifications.

Tool List: Screwdrivers, pliers, carburetor cleaner.

Replacing the Ignition Coil

Remove the Flywheel Cover: Remove the flywheel cover.
Disconnect Spark Plug Wire: Disconnect the spark plug wire from the spark plug.
Remove Ignition Coil: Remove the ignition coil mounting bolts and remove the ignition coil.
Install New Ignition Coil: Install the new ignition coil in the reverse order of removal.
Set Air Gap: Set the air gap between the ignition coil and the flywheel to the manufacturer’s specifications (typically around 0.012 inches).

Safety First: Disconnect the spark plug wire before working on the ignition system to prevent accidental starting.

Replacing the Fuel Filter

Locate Fuel Filter: Locate the fuel filter inside the fuel tank.
Remove Fuel Filter: Use a hooked wire or pliers to pull the fuel filter out of the fuel tank.
Install New Fuel Filter: Attach the new fuel filter to the fuel line and insert it into the fuel tank.

Easy Fix: Replacing the fuel filter is a quick and easy way to improve fuel flow and prevent carburetor problems.

Common Problems and Solutions for the Stihl 031AV

Even with proper maintenance and timely repairs, the Stihl 031AV can experience its share of problems. Here are some common issues and their solutions.

Hard Starting

Possible Causes: Clogged carburetor, faulty ignition system, low compression.
Solutions: Clean the carburetor, replace the spark plug, check the ignition coil, check the compression.

Stalling

Possible Causes: Clogged carburetor, fuel starvation, overheating.
Solutions: Clean the carburetor, check the fuel filter, check the fuel lines, clean the cooling fins.

Loss of Power

Possible Causes: Worn piston and cylinder, clogged carburetor, restricted exhaust.
Solutions: Check the compression, clean the carburetor, check the exhaust port.

Troubleshooting Tip: Start with the simplest solutions first, such as cleaning the carburetor or replacing the spark plug.

Maintaining Your Stihl 031AV for Longevity

Proper maintenance is crucial for keeping your Stihl 031AV running smoothly for years to come. Here are some essential maintenance tasks.

Regular Cleaning

Air Filter: Clean the air filter regularly to prevent dirt and debris from entering the engine.
Cooling Fins: Clean the cooling fins on the cylinder to ensure proper engine cooling.
Sawdust Removal: Remove sawdust and debris from the saw after each use.

Lubrication

Chain and Bar: Use high-quality bar and chain oil to keep the chain and bar properly lubricated.
Grease Fittings: Grease any grease fittings on the saw regularly.

Storage

Fuel Tank: Drain the fuel tank before storing the saw for an extended period.
Storage Location: Store the saw in a dry, protected location.

Maintenance Schedule: I recommend performing a thorough inspection and maintenance check at least once a year.

Safety First: Operating Your Stihl 031AV Safely

Chainsaws are powerful tools, and it’s essential to operate them safely to prevent accidents. Here are some safety tips.

Personal Protective Equipment (PPE)

Eye Protection: Wear safety glasses or a face shield to protect your eyes from flying debris.
Hearing Protection: Wear earplugs or earmuffs to protect your hearing from the loud noise of the chainsaw.
Gloves: Wear gloves to protect your hands from cuts and abrasions.
Chaps: Wear chainsaw chaps to protect your legs from accidental cuts.
Boots: Wear sturdy boots with good ankle support.

Safe Operating Practices

Clear Work Area: Clear the work area of any obstacles or hazards.
Firm Footing: Maintain a firm footing and a balanced stance.
Proper Grip: Grip the chainsaw firmly with both hands.
Avoid Kickback: Be aware of the risk of kickback and take steps to avoid it.
Never Cut Above Shoulder Height: Never cut above shoulder height.
Shut Off Engine: Shut off the engine before setting the saw down or carrying it.

Safety Reminder: Always read and follow the manufacturer’s instructions for operating your chainsaw.

The Future of Vintage Chainsaws: Keeping the Classics Alive

As modern chainsaws become increasingly complex and technologically advanced, there’s a growing appreciation for the simplicity and durability of vintage saws like the Stihl 031AV. By sourcing the right parts, performing regular maintenance, and operating them safely, we can keep these classics alive for generations to come.

The Resurgence of Interest

Nostalgia: Many people appreciate vintage saws for their historical significance and classic design.
Reliability: Vintage saws are often more reliable and easier to repair than modern saws.
Sustainability: Restoring and maintaining vintage saws is a sustainable alternative to buying new equipment.

The Community

Online Forums: Online chainsaw forums and communities provide a valuable resource for sharing information and connecting with other enthusiasts.
Local Clubs: Local chainsaw clubs and organizations offer opportunities to learn from experienced users and participate in group activities.

Final Thought: Owning and maintaining a vintage chainsaw like the Stihl 031AV is more than just a hobby; it’s a way to connect with the past and preserve a piece of history.

Conclusion: Your Stihl 031AV – A Timeless Workhorse

I hope this guide has provided you with the knowledge and resources you need to keep your Stihl 031AV running smoothly. Finding parts for vintage saws can be a challenge, but with a little research, patience, and the right strategies, you can keep these timeless workhorses cutting for years to come. Remember to prioritize safety, perform regular maintenance, and appreciate the legacy of these classic machines. Now, get out there and keep that Stihl 031AV roaring!