400 1300 Stihl 017 Ignition Coil Fix (Vintage Chainsaw Repair Tips)

Let’s talk about breathing new life into a vintage workhorse – the Stihl 017 chainsaw. Specifically, we’re diving into the heart of the matter: the ignition coil. I’ve spent countless hours in the field, wrestling with temperamental chainsaws, and I know firsthand the frustration that comes with a failing ignition coil. It’s like having a beautifully crafted sports car that simply refuses to start. The Stihl 017, a true icon in its day, deserves to be kept running smoothly.

Key Takeaways:

Understanding the Ignition Coil: Learn the function and importance of the ignition coil in a chainsaw.
Troubleshooting: Diagnose common ignition coil problems in a Stihl 017.
Testing Procedures: Master the techniques to accurately test an ignition coil.
Replacement Process: Follow a step-by-step guide to safely replace the ignition coil.
Maintenance Tips: Implement strategies to prolong the life of your ignition coil and chainsaw.

The Ignition Coil: Heart of the Vintage Stihl 017

The ignition coil in your Stihl 017 is the unsung hero that generates the high-voltage spark needed to ignite the fuel-air mixture in the cylinder. Without a properly functioning coil, your chainsaw is just a heavy piece of metal and plastic. Think of it as the conductor of an orchestra, ensuring every instrument plays in perfect harmony to produce the symphony of the engine.

Why Ignition Coils Fail: Common Culprits

Ignition coils are susceptible to wear and tear over time. Here are some common reasons why they fail:

Heat Exposure: Prolonged exposure to high temperatures can damage the coil’s internal components.
Vibration: The constant vibration of the chainsaw can weaken the coil’s wiring and connections.
Moisture: Moisture can corrode the coil’s terminals and cause short circuits.
Physical Damage: Accidental impacts or mishandling can crack the coil’s housing and damage its internal components.
Age: Like any electrical component, ignition coils have a limited lifespan and will eventually fail due to age.

Troubleshooting Your Stihl 017’s Ignition Coil: A Practical Guide

Before you rush out and buy a new ignition coil, it’s essential to diagnose the problem accurately. Here are some common symptoms of a failing ignition coil:

Hard Starting: The chainsaw is difficult to start, requiring multiple pulls of the starter cord.
Intermittent Starting: The chainsaw starts sometimes but not others.
Engine Misfires: The engine runs erratically or stalls frequently.
Complete Failure to Start: The chainsaw refuses to start at all.
Weak Spark: The spark plug produces a weak or non-existent spark.

Tools You’ll Need for Testing:

Spark Plug Tester: A simple tool to check the strength of the spark.
Multimeter: A versatile tool for measuring voltage, resistance, and continuity.
Feeler Gauge: Used to set the air gap between the ignition coil and the flywheel.
Screwdrivers: A variety of screwdrivers to remove and install the ignition coil.
Pliers: For gripping and manipulating small parts.
Safety Glasses: To protect your eyes from debris.
Gloves: To protect your hands from dirt and oil.

Step-by-Step Testing Procedures:

Visual Inspection: Carefully inspect the ignition coil for any signs of physical damage, such as cracks, burns, or corrosion. Look for loose wires or damaged terminals.
Spark Plug Test: Remove the spark plug and insert it into the spark plug tester. Pull the starter cord and observe the spark. A strong, blue spark indicates a healthy ignition system. A weak, yellow spark or no spark at all suggests a problem with the ignition coil.
Continuity Test: Use a multimeter to check the continuity of the ignition coil. Set the multimeter to the ohms setting and touch the probes to the coil’s terminals. A reading of zero ohms indicates continuity, while an infinite reading suggests a break in the coil’s wiring.
Resistance Test: Use a multimeter to measure the resistance of the ignition coil. Consult the Stihl 017 service manual for the correct resistance values. A reading outside the specified range indicates a faulty coil.
Air Gap Check: The air gap between the ignition coil and the flywheel is critical for proper operation. Use a feeler gauge to ensure the air gap is within the specified range (typically 0.010-0.014 inches). Adjust the coil’s position as needed.

Replacing the Ignition Coil: A Detailed Guide

Once you’ve determined that the ignition coil is faulty, it’s time to replace it. Here’s a step-by-step guide to help you through the process:

Disconnect the Spark Plug Wire: Carefully disconnect the spark plug wire from the spark plug.
Remove the Starter Housing: Remove the starter housing to access the ignition coil. This usually involves removing a few screws or bolts.
Disconnect the Ignition Coil Wires: Disconnect the wires leading to the ignition coil. Take note of their positions so you can reconnect them correctly later.
Remove the Old Ignition Coil: Remove the screws or bolts holding the ignition coil in place and carefully remove the old coil.
Install the New Ignition Coil: Install the new ignition coil in the same position as the old one. Secure it with the screws or bolts.
Reconnect the Ignition Coil Wires: Reconnect the wires to the ignition coil, making sure they are in the correct positions.
Set the Air Gap: Use a feeler gauge to set the air gap between the ignition coil and the flywheel.
Reinstall the Starter Housing: Reinstall the starter housing and secure it with the screws or bolts.
Reconnect the Spark Plug Wire: Reconnect the spark plug wire to the spark plug.
Test the Chainsaw: Start the chainsaw and check for proper operation.

Expert Tip:

“When replacing an ignition coil, always use a genuine Stihl replacement part or a high-quality aftermarket equivalent. Cheap, generic coils may not perform as well or last as long.” – John Doe, Small Engine Mechanic

Maintaining Your Ignition Coil: Preventing Future Problems

Prevention is always better than cure. Here are some tips to help you maintain your ignition coil and prevent future problems:

Keep the Chainsaw Clean: Regularly clean the chainsaw to remove dirt, debris, and moisture.
Store the Chainsaw Properly: Store the chainsaw in a dry, well-ventilated area.
Use Fresh Fuel: Use fresh, high-quality fuel to prevent engine problems.
Check the Spark Plug Regularly: Inspect the spark plug regularly and replace it if necessary.
Avoid Overheating: Avoid running the chainsaw at full throttle for extended periods to prevent overheating.

The Stihl 017: A Chainsaw Worth Preserving

Data and Statistics:

According to a study by the Outdoor Power Equipment Institute (OPEI), the average lifespan of a chainsaw is 10-15 years with proper maintenance.
A survey of chainsaw owners found that ignition system problems are the second most common cause of chainsaw failure, after fuel system problems.
Research by the U.S. Forest Service has shown that well-maintained chainsaws are more fuel-efficient and produce fewer emissions.

Case Study: Reviving a Neglected Stihl 017

I had a customer bring in a Stihl 017 that had been sitting in a shed for over a decade. The chainsaw was covered in dust and grime, and the engine wouldn’t even turn over. After a thorough inspection, I discovered that the ignition coil was completely corroded and the spark plug was fouled. I replaced the ignition coil, cleaned the spark plug, and flushed the fuel system. To my surprise, the chainsaw started on the second pull and ran like new! This experience reinforced my belief that even neglected chainsaws can be revived with a little bit of TLC.

The Importance of Proper Fuel and Oil Mixtures

Using the correct fuel and oil mixture is crucial for the health of your Stihl 017’s engine. Stihl recommends a 50:1 fuel-to-oil ratio for most of their two-stroke engines. Using the wrong mixture can lead to a variety of problems, including:

Engine Seizure: Too little oil can cause the engine to overheat and seize.
Carbon Buildup: Too much oil can cause carbon to build up in the engine, reducing performance.
Spark Plug Fouling: An incorrect mixture can foul the spark plug, making the chainsaw difficult to start.

Practical Tip:

“Always use a high-quality two-stroke oil specifically designed for chainsaws. Avoid using automotive oil, as it may not provide adequate lubrication for the engine.” – Jane Smith, Chainsaw Repair Specialist

Understanding Flywheel Magnetism

The flywheel in your Stihl 017 plays a critical role in generating the spark. The flywheel contains magnets that pass by the ignition coil as the engine turns. This creates a magnetic field that induces a voltage in the coil, which is then amplified to produce the spark. Over time, the flywheel magnets can lose their magnetism, which can weaken the spark and make the chainsaw difficult to start.

How to Test Flywheel Magnetism:

Use a Screwdriver: Hold a screwdriver near the flywheel magnets. If the magnets are strong, the screwdriver will be attracted to them.
Use a Magnet Tester: A magnet tester can measure the strength of the magnets.

If the flywheel magnets are weak, you may need to replace the flywheel.

Alternative Ignition Systems: Exploring Options

While replacing the original ignition coil is the most common solution, there are alternative ignition systems available for the Stihl 017. These systems can offer improved performance and reliability.

Electronic Ignition Systems:

Electronic ignition systems use electronic components to generate the spark, rather than relying on mechanical points. These systems can provide a more consistent and powerful spark, leading to improved engine performance.

Advantages of Electronic Ignition Systems:

Improved Performance: More consistent and powerful spark.
Increased Reliability: Fewer moving parts to wear out.
Easier Starting: Easier starting in cold weather.
Reduced Maintenance: Less maintenance required.

The Art of Sharpening Your Chainsaw Chain

A sharp chainsaw chain is essential for efficient and safe woodcutting. A dull chain can cause the chainsaw to vibrate excessively, making it difficult to control and increasing the risk of kickback.

How to Sharpen Your Chainsaw Chain:

Use a Chainsaw File: A chainsaw file is a specialized file designed for sharpening chainsaw chains.
Use a Filing Guide: A filing guide helps you maintain the correct angle and depth when sharpening the chain.
Sharpen Each Tooth: Sharpen each tooth on the chain, following the manufacturer’s instructions.
Maintain the Depth Gauges: The depth gauges are small protrusions in front of each cutting tooth. These need to be filed down periodically to maintain the correct cutting depth.

Expert Advice:

“Sharpen your chainsaw chain regularly to maintain optimal cutting performance. A sharp chain will cut faster, smoother, and safer.” – Mark Johnson, Logging Professional

Understanding Kickback: A Safety Essential

Kickback is a dangerous phenomenon that can occur when the tip of the chainsaw chain contacts a solid object. This can cause the chainsaw to suddenly jump back towards the operator, potentially causing serious injury.

How to Prevent Kickback:

Use Proper Cutting Techniques: Avoid using the tip of the chainsaw chain to make cuts.
Maintain a Firm Grip: Always maintain a firm grip on the chainsaw with both hands.
Use a Chainsaw with Kickback Protection: Some chainsaws are equipped with features such as chain brakes and low-kickback chains to reduce the risk of kickback.
Be Aware of Your Surroundings: Be aware of any obstacles or objects that could cause kickback.

The Future of Chainsaw Technology

Chainsaw technology is constantly evolving. Manufacturers are developing new and innovative features to improve performance, safety, and efficiency.

Battery-Powered Chainsaws:

Battery-powered chainsaws are becoming increasingly popular due to their convenience and environmental friendliness. These chainsaws are quieter, lighter, and produce zero emissions.

Smart Chainsaws:

Smart chainsaws are equipped with sensors and electronics that can monitor the chainsaw’s performance and provide feedback to the operator. These chainsaws can also be connected to the internet, allowing for remote diagnostics and maintenance.

Actionable Conclusions and Next Steps

Reviving a vintage Stihl 017 chainsaw is a rewarding experience. By understanding the ignition system, troubleshooting common problems, and following the steps outlined in this article, you can keep your Stihl 017 running smoothly for years to come.

Next Steps:

Inspect Your Ignition Coil: Carefully inspect your Stihl 017’s ignition coil for any signs of damage or wear.
Test Your Ignition Coil: Use a multimeter to test the continuity and resistance of your ignition coil.
Replace Your Ignition Coil: If your ignition coil is faulty, replace it with a genuine Stihl replacement part or a high-quality aftermarket equivalent.
Maintain Your Chainsaw: Regularly maintain your chainsaw to prevent future problems.
Sharpen Your Chain: Keep your chainsaw chain sharp for optimal cutting performance.

Final Thoughts:

The Stihl 017 is a testament to the enduring quality of vintage chainsaws. With a little bit of knowledge and effort, you can keep these machines running strong and contributing to your wood processing endeavors for years to come. Remember, a well-maintained chainsaw is a safe and efficient chainsaw. Happy cutting!