Easy Steps How To Use A Stihl Chainsaw Sharpener

Can you sharpen a chainsaw chain with a Stihl sharpener? Yes, you absolutely can, and it’s a skill that will save you time, money, and frustration. Learning how to properly use a Stihl chainsaw sharpener is essential for maintaining the performance and safety of your Stihl chainsaw. A dull chain makes your work harder, wears down your chainsaw’s engine, and can be dangerous. This guide will walk you through everything you need to know to get your Stihl chain cutting like new again.

Why Sharpen Your Chainsaw Chain?

A sharp chainsaw chain is not a luxury; it’s a necessity. Here’s why:

Efficiency: A sharp chain cuts wood with less effort. It bites into the wood cleanly and quickly.
Safety: A dull chain can “push” or “kickback” unexpectedly, a common cause of serious injuries. A sharp chain bites into the wood and stays on course.
Reduced Wear: Forcing a dull chain through wood puts extra strain on your chainsaw’s engine, clutch, and bar. This can lead to premature wear and costly repairs.
Better Cuts: Sharp chains produce cleaner cuts, making your work easier and your results more professional.

Choosing the Right Stihl Sharpener

Stihl offers a few excellent options for keeping your chain sharp. The best choice for you depends on your needs and preferences.

The Stihl 2-in-1 Sharpener

This is a popular and user-friendly option, especially for those new to chainsaw sharpening. It combines a file and a guide into one unit.

How it Works: The 2-in-1 sharpener has a built-in guide that helps you maintain the correct filing angle. It uses a round file to shape the cutter and a flat file to set the depth gauge.
Advantages: Easy to use, portable, and good for field sharpening.
Disadvantages: May not offer the same precision as dedicated grinders for professional results.

Stihl Electric Sharpener

For those who sharpen frequently or have a large number of chains, a Stihl electric sharpener can be a significant time-saver.

How it Works: These grinders use a rotating abrasive wheel to shape the cutter. They often come with jigs and guides to ensure consistent angles.
Advantages: Fast, consistent results, excellent for multiple chains.
Disadvantages: Requires electricity, a larger investment, and a learning curve to master the adjustments.

The Traditional File and Guide Method

This is the classic way to sharpen a chainsaw chain and is still favored by many experienced users. It involves a separate round file, a file guide, and a flat file.

How it Works: You use a file guide to hold the round file at the correct angle and depth. This ensures each tooth is sharpened uniformly.
Advantages: Offers the most control and precision, very cost-effective in the long run.
Disadvantages: Requires more practice to achieve consistent results.

Gathering Your Sharpening Supplies

Regardless of the type of sharpener you choose, you’ll need a few key items:

The Sharpener: Your chosen Stihl sharpener (2-in-1, electric, or file and guide).
Stihl File Gauge: This is crucial for setting the correct depth of the round file relative to the cutter. It ensures you don’t over-sharpen or under-sharpen.
Round File: The diameter of the round file depends on your specific Stihl chainsaw chain. Stihl chains are marked with their recommended file size.
Flat File: Used for filing down the depth gauges.
Filing Vise or Clamp: To hold the guide bar securely while you work.
Gloves: For protection.
Safety Glasses: To protect your eyes from metal filings.
Rag: For cleaning.

Preparing Your Chainsaw Chain for Sharpening

Before you start sharpening, proper preparation is key.

Clean the Chain: Remove any dirt, sap, or debris from the chain. A clean chain allows the file to grip the metal better.
Secure the Chainsaw: Place your Stihl chainsaw on a stable surface. Use a filing vise or clamp to hold the guide bar firmly. This prevents the chain from moving while you sharpen.
Identify the Starting Tooth: Find the first cutter tooth on one side of the chain. You’ll work on all the teeth on this side before moving to the other.

Mastering the Stihl Chainsaw Chain Sharpening Process

Let’s break down the actual sharpening steps. The goal is to restore the cutting edge of each tooth to its original sharpness and angle.

Step 1: Setting Up Your Stihl File Guide (If Applicable)

If you’re using a Stihl file guide or the integrated guide on the 2-in-1 sharpener, this is where you ensure proper setup.

Stihl File Gauge: The Stihl file gauge is your best friend here. It helps you position the round file correctly. The gauge has markings that align with the top plate and side plate of the cutter.
Stihl Chain Filing Angle: Most Stihl chains are designed for a specific filing angle, typically 25 or 30 degrees. Your Stihl file guide will have these angles marked. Ensure the guide is flush against the top of the cutter and aligned with the chain’s direction.

Step 2: Sharpening the Cutter Teeth (Round File)

This is the core of the sharpening process. You’re aiming to create a sharp, refined cutting edge on each tooth.

Choosing the Right Stihl Round File Size: This is critical. Stihl specifies the correct round file size for each of their chains. You can usually find this information in your chainsaw’s manual or by looking at the chain itself for markings. Common sizes include 5/32″, 3/16″, and 7/32″. Using the wrong size file will not sharpen correctly.
Positioning the File: Place the round file in the gullet of the cutter, ensuring it’s centered.
The Filing Stroke:
- Engage the file with the cutter.
- Apply firm, even pressure on the forward stroke. This is where the sharpening happens.
- Lift the file on the backward stroke to avoid dulling the cutter.
Number of Strokes: Aim for a consistent number of strokes on each tooth. Usually, 3-5 firm strokes are sufficient. The goal is to remove metal until a shiny, sharp edge appears.
Maintaining the Stihl Chain Filing Angle: Keep the file at the designated angle. The Stihl file guide is designed to help you do this consistently. It should feel like you’re filing away a small sliver of metal, not grinding aggressively.

Step 3: Sharpening the Other Side of the Chain

Once you’ve sharpened all the cutters on one side, you need to do the same for the cutters on the other side.

Flip the Chainsaw: Rotate your Stihl chainsaw so you can access the teeth on the opposite side.
Repeat the Process: Apply the same filing technique, maintaining the correct Stihl chain filing angle and pressure, for all the cutters on this side.

Step 4: Filing the Depth Gauges (When Necessary)

The depth gauges, also called rakers, control how deep the cutter bites into the wood. If they are too high, the chain won’t cut efficiently. If they are too low, the chain can cut too aggressively and increase the risk of kickback.

When to File: You typically only need to file depth gauges when they protrude above the filed Stihl file gauge.
Using the Stihl File Gauge: Place the Stihl file gauge over the cutter. If the depth gauge is higher than the gauge’s marking, it needs filing.
Filing Technique: Use a flat file. Position the file so it rests on top of the depth gauge and is filed at a slight downward angle towards the nose of the chain. File just enough to bring the depth gauge down to the level of the Stihl file gauge.
Consistency is Key: File all depth gauges to the same level.

Step 5: Inspecting and Testing

After you’ve gone through all the teeth and depth gauges:

Inspect Each Tooth: Look at each cutter tooth. They should have a consistent shiny edge and the same shape.
Check the Depth Gauges: Ensure all depth gauges are at the same height.
Clean the Chain: Brush off any metal filings.
Test Cut: Mount the chain back on your chainsaw and make a test cut in a piece of scrap wood. A sharp chain will cut smoothly and cleanly with minimal effort. If it’s still struggling, you may need to go back and refine the sharpening.

Using a Stihl Grinder (Stihl Electric Sharpener)

For those using a Stihl electric sharpener, the process is similar in principle but different in execution.

Setup: Mount the grinder securely. Install the correct size grinding disc for your chain. Consult your Stihl electric sharpener’s manual for specific disc sizes and adjustments.
Adjusting the Jigs: Stihl grinders come with adjustable jigs that control the depth of cut and the filing angle. These are crucial for consistency. Set the angle to match your chain’s specifications (usually 25 or 30 degrees).
Grinding the Cutters:
- Position the chain under the grinding wheel.
- Engage the grinding wheel.
- Apply gentle pressure against the cutter. The wheel will remove metal quickly.
- Lift the wheel and advance the chain to the next cutter.
- Maintain consistent pressure and angle for each tooth.
Switching Sides: Once one side is done, adjust the grinder’s jig to sharpen the teeth on the other side.
Depth Gauges: Some Stihl grinders have attachments or require a separate step with a flat file to adjust depth gauges. Follow your grinder’s manual.

Maintaining Your Stihl Chainsaw Sharpener

Just like your chainsaw, your sharpener needs care to perform well.

Cleanliness: Keep your files, guides, and grinders clean. Metal filings can clog files and reduce their effectiveness.
File Condition: Replace round files when they become worn or dull. A dull file won’t sharpen effectively and can damage the chain.
Grinder Maintenance: For electric grinders, follow the manufacturer’s instructions for cleaning and maintaining the motor and grinding discs.

Common Mistakes to Avoid

Using the Wrong File Size: This is a common error that leads to poor sharpening. Always check your Stihl round file size.
Inconsistent Angles: Not maintaining the correct Stihl chain filing angle on each tooth will result in a poorly cutting chain.
Over-Sharpening: Removing too much metal can weaken the cutter and shorten its lifespan.
Under-Sharpening: Not removing enough metal means the chain won’t be sharp enough to cut efficiently.
Ignoring Depth Gauges: Properly set depth gauges are as important as sharp cutters.
Not Securing the Chain: A moving chain during sharpening is ineffective and dangerous.

Stihl Chainsaw Chain Sharpening Table

Here’s a quick reference for common Stihl chain types and their recommended sharpening parameters:

Stihl Chain Pitch	Stihl Round File Size	Stihl Chain Filing Angle	Stihl Depth Gauge Setting
Picco™ Micro	4.0 mm (5/32″)	25°	0.025″
Picco™ Mini	4.0 mm (5/32″)	25°	0.025″
Rapid™ Micro	4.0 mm (5/32″)	25°	0.025″
Rapid™ Super	4.5 mm (3/16″)	25°	0.020″
Rapid™ Duro	4.5 mm (3/16″)	30°	0.020″
Picco™ Duro	4.0 mm (5/32″)	25°	0.025″
Duro™ 3	5.5 mm (7/32″)	30°	0.025″
Rapid™	4.8 mm (Actually 3/16″)	25°	0.025″
Oilomatic™	4.0 mm (5/32″)	25°	0.025″

Note: Always refer to your specific Stihl chainsaw and chain manual for the most accurate specifications. The “Stihl file gauge” might have markings to help you set the depth gauge relative to the cutter’s top plate.

Frequently Asked Questions (FAQ)

Q: How often should I sharpen my Stihl chainsaw chain?
A: You should sharpen your Stihl chainsaw chain whenever you notice a decrease in cutting performance, if it’s taking excessive force to cut, or if you hear a rasping sound instead of a smooth cutting sound. For frequent users, this might be every few hours of use. For occasional users, it might be once a season.
Q: Can I use a generic file instead of a Stihl file?
A: While you can use generic files, Stihl files are designed to match the specific metallurgy and tooth geometry of Stihl chains. For optimal results and longevity of your chain, using Stihl-specified files is recommended. Always ensure the Stihl round file size is correct for your chain.
Q: What is the correct Stihl chain filing angle?
A: Most Stihl chains are designed for a 25-degree filing angle. Some heavy-duty or specialized chains might have a 30-degree angle. Always check your chain’s specifications or the markings on your Stihl file guide.
Q: How do I know if my depth gauges need filing?
A: Use your Stihl file gauge. Place it over the cutter so the gauge rests on the top plate. If the depth gauge (the small metal piece in front of the cutter) protrudes above the gauge’s slot, it needs to be filed down.
Q: What if I can’t find my Stihl file gauge?
A: A Stihl file gauge is a critical tool for correct sharpening. You can purchase a replacement from a Stihl dealer or an online retailer. Do not attempt to sharpen without it if you are using a standard file and guide.
Q: Is the Stihl 2-in-1 sharpener good for Stihl chisel sharpening?
A: The Stihl 2-in-1 sharpener is designed for general chain sharpening, which includes the Stihl chisel profile. It guides the file to maintain the correct angle for the chisel cutters. For very advanced or precise Stihl chisel sharpening, some professionals might opt for a dedicated Stihl grinder.
Q: My Stihl grinder seems to be removing too much metal. What am I doing wrong?
A: This could be due to excessive pressure, holding the grinding wheel against the cutter for too long, or incorrect adjustment of the grinding angle or depth. Ensure your Stihl grinder is properly adjusted and use light, consistent pressure. Refer to your Stihl electric sharpener manual.
Q: Can I sharpen my Stihl chainsaw chain on the saw without removing it?
A: While it is technically possible to sharpen a chain while it’s on the saw using portable tools like the Stihl 2-in-1 sharpener or a hand file, it is generally easier and safer to remove the chain or secure the saw very firmly in a vise. Removing the chain allows for better access and a more consistent sharpening job.

By following these steps, you can effectively use your Stihl chainsaw sharpener to keep your equipment in top condition. A sharp chain is a safe and efficient chain, and with a little practice, you’ll be able to achieve professional results right at home.