What Is a Stihl Easy File for .325-Inch Chain? (File Angles)
A STIHL 2-in-1 EasyFile, also called an Easy2File, is a guided sharpening tool for compatible chainsaw chains. For a standard .325-inch chain, it uses a round file to sharpen the cutters and a flat file to lower the depth gauges. Many such chains use a 4.8 mm (3/16-inch) round file and a 30-degree filing angle, but check your chain marking and STIHL chart first.
If you have found “EasyFile” or a filing angle in a manual, the key is to match the tool to the chain, not guess from the saw’s size. A correct file guide helps keep the cutter shape and angle consistent. The wrong file size or depth-gauge setting, however, can affect how the chain cuts and behaves.
I explain it as two jobs in one tool: sharpen the cutting teeth, then check the small depth gauges in front of them. This guide shows how to choose the right EasyFile, understand the angles, and work through the checks without treating every .325 chain as identical.
Choose the Correct EasyFile and Prepare Safely
A STIHL EasyFile is a guided sharpening tool that combines a round file for the cutters with a flat file for the depth gauges. Its guides set the filing geometry when you position and use the tool as instructed. Before starting, confirm the chain type and file size from the chain marking and STIHL’s sharpening information.
Pitch describes the chain’s size: it is half the distance between three consecutive rivets, measured from the centers of the first and third. A .325-inch pitch is one useful clue, but it does not by itself identify the correct file. Different chain designs can share a pitch and still call for different sharpening details.
Look for the chain identification printed or stamped on the chain, and check the saw or chain documentation. Then match that chain type to the STIHL sharpening chart and the markings on the EasyFile. Do not choose a file only because the bar is a certain length or the saw has a certain engine size.
| Check | What to confirm | Why it matters |
|---|---|---|
| Chain pitch | .325 in, if that is what the chain is marked as | Confirms one part of the chain specification |
| Chain type | The chain’s identification and the STIHL chart | Determines the suitable file and settings |
| Round-file diameter | Commonly 4.8 mm (3/16 in) for a standard STIHL .325 chain | The wrong diameter can change cutter shape |
| Depth-gauge setting | Often 0.65 mm (0.025 in) for a common .325 specification | The exact chain may call for a different setting |
| Filing angle | Typically 30° for STIHL .325 chain | The guide helps maintain the intended cutter geometry |
Before filing, switch off the saw. Disconnect its battery or remove the spark-plug boot, wear gloves and eye protection, and secure the saw and bar so the chain cannot move unexpectedly. Keep hands clear of the cutting edges, even when the saw is disabled.
Illustrative bench example: Suppose your chain is marked .325, and you have an EasyFile marked 4.8 mm. That pairing may be right for a common STIHL .325 chain, but you still need to compare the chain type with the sharpening chart. If the chart specifies another file or setting, follow it instead. The pitch alone is not enough.
File .325-Inch Cutters at the Correct Angle
A cutter is the sharp tooth that removes wood as the chain moves around the bar. The top plate is the visible upper surface of that tooth. For many STIHL .325 chains, the specified top-plate filing angle is 30 degrees, and the EasyFile guide helps hold the file in the correct position when used as directed.
An angle is only one part of the cutter’s shape. File diameter, the file’s position in the cutter, and the chain’s own specification also matter. The EasyFile is useful because it guides the file, but it cannot make a mismatched file size correct. Confirm the chain and tool before you begin.
A careful filing sequence:
- Set the guide on the cutter. Position the EasyFile according to its instructions. Keep its guide seated and aligned; do not twist it or let it rock as you file.
- Follow the indicated direction and angle. Use the tool’s guide to maintain the specified filing geometry. Do not substitute an angle based on memory or a different chain.
- Use steady, consistent strokes. Apply controlled strokes rather than forcing the file. Keep your technique as similar as possible from cutter to cutter.
- Work around the chain safely. Advance the chain only when it is safe to do so, and secure it again before filing. Keep track of where you started.
- Repeat on the cutters facing the other direction. Maintain the specified geometry on both sides and avoid making one group of cutters noticeably shorter than the other.
Equal cutter length matters because uneven teeth can make a chain cut poorly or pull to one side. If a tooth is damaged, unusually short, or missing material, do not keep filing blindly to match it. Check the chain maker’s guidance or have a qualified service provider inspect it.
The EasyFile is a guide, not a substitute for inspection. If the file does not sit properly in the cutter, stop and recheck the chain type, file diameter, and tool instructions. A smooth, repeatable setup is more useful than trying to correct a mismatch with extra pressure.
Set Depth Gauges and Inspect the Chain
Depth gauges, often called rakers, are the small metal projections ahead of the cutters. They control how much wood a cutter can take in each pass. The EasyFile’s flat-file part is designed to address these projections, but the correct setting depends on the chain type and should be checked with its matching depth-gauge tool.
A commonly specified depth-gauge setting for a standard STIHL .325 chain is 0.65 mm (0.025 in). Treat that as a common reference, not a universal rule for every chain marked .325. Use the STIHL chart and the correct gauge for your chain before filing any raker.
A depth-gauge tool sits over the chain and indicates whether a raker projects above the specified level. If it does, file only the part that stands above the gauge. Do not lower every raker by eye, and do not file below the chain’s specified setting. Rakers set too low can make the chain take a more aggressive bite and increase kickback risk.
To check and adjust depth gauges:
- Confirm the depth-gauge setting for the exact chain type.
- Place the matching gauge on the chain as its instructions show.
- File only rakers that stand above the gauge.
- Follow the chain maker’s instructions on rounding the raker’s leading edge.
- Recheck the rakers and cutters after filing.
The EasyFile may allow cutter sharpening and raker filing as part of its intended operation. Still, check the result with the chain-specific gauge rather than assuming every raker needs to be lowered each time. The gauge provides a clearer reference than judging the height by sight.
Clean, Check, and Store the Sharpening Tool
After filing, remove metal filings from the chain and tool, then inspect the cutters and depth gauges. Check that the chain is not damaged and that the cutters look consistent. Before using the saw, verify chain tension and free movement, then reinstall the spark-plug boot or battery only after the saw is correctly assembled.
Metal filings can collect around the file and guide, so clean the tool according to its instructions. Check the files for wear or damage, too. A file that no longer cuts effectively can make it harder to maintain a consistent finish; replace it when needed rather than pressing harder.
Before starting the saw, confirm that guards and covers are correctly fitted and that the chain moves freely by hand only when the saw is disabled and you can do so safely. Use the saw’s manual for the correct chain-tension procedure. The EasyFile does not set chain tension, control bar-oil flow, or affect fuel mix, engine speed, or saw torque.
Quick troubleshooting:
- File does not fit the cutter: Recheck the chain identification, chart, and file diameter.
- Cutters look uneven: Compare the two sides and check that the guide was seated consistently.
- Rakers appear too low: Stop filing and compare them with the correct depth-gauge setting tool.
- Chain is damaged or cuts poorly after sharpening: Do not assume more filing will solve it; inspect for damage and follow the chain maker’s guidance.
Key Takeaway
A STIHL EasyFile is a guided tool for sharpening compatible chain cutters and managing their depth gauges. A common setup for STIHL .325 chain uses a 4.8 mm (3/16-inch) round file, a 30-degree top-plate angle, and a 0.65 mm (0.025-inch) depth-gauge setting. Confirm each detail against the exact chain type before filing.
Frequently Asked Questions
What is a STIHL EasyFile for .325 chain?
It is a guided sharpening tool that combines a round file for cutters with a flat file for depth gauges. It is intended for compatible chain types, so check the chain marking and STIHL chart before use.
What size round file does a STIHL .325 chain use?
A common STIHL .325 chain specification uses a 4.8 mm (3/16-inch) round file. Do not rely on pitch alone; confirm the precise chain type and file size in STIHL’s sharpening chart.
What angle should I file a STIHL .325 chain at?
The typical top-plate filing angle is 30 degrees for STIHL .325 chain. Follow the chain-specific sharpening instructions and position the EasyFile as its guide directs.
Does every .325 chain use a 4.8 mm file?
No. The .325-inch pitch does not prove that every chain variant uses the same file. Check the chain identification and the manufacturer’s sharpening chart first.
What is the depth-gauge setting for a .325 chain?
A common STIHL .325 setting is 0.65 mm (0.025 in), but the correct value depends on the chain type. Use its matching depth-gauge tool and specification.
What do the EasyFile’s two files do?
The round file sharpens the cutters. The flat-file component addresses the depth gauges, which help control how much wood the cutters remove.
Can I lower depth gauges by eye?
No. Check them with the correct depth-gauge tool, and file only those that project above it. Rakers that are too low can make the chain more aggressive and increase kickback risk.
Does the EasyFile set chain tension?
No. It is for sharpening and depth-gauge work, not tension adjustment. Follow the saw manual to check and adjust chain tension.
Should I use the EasyFile based on my bar length or engine size?
No. Match the EasyFile to the chain pitch, chain type, and specified file size. Bar length and engine displacement do not identify the correct sharpening geometry.
What should I do if the file does not sit properly?
Stop and recheck the chain marking, file diameter, and EasyFile instructions. Do not force the file into the cutter or continue with a suspected mismatch.
(This article was written by one of our staff writers, Evan Bradley. Visit our Meet the Team page.)
