Chainsaw No Spark Issues (MS880 Coil Troubleshooting Tips)
Understanding the Importance of a Good Spark
A strong, consistent spark is essential for igniting the fuel-air mixture in your chainsaw’s cylinder, leading to combustion and powering the engine. The ignition coil is the heart of this system, responsible for generating the high voltage needed to create that spark. If the coil is faulty or if there are issues in the electrical circuit, you’ll likely end up with a chainsaw that won’t start or runs poorly.
My First Encounter with a Sparkless Chainsaw
I remember the first time I encountered a chainsaw with a spark issue. I was helping a friend clear some land for a new cabin. We had been working for hours, felling trees and bucking logs, when suddenly, his MS880 just died. We checked the fuel, the air filter, and everything else we could think of, but nothing seemed to work. It turned out to be a faulty ignition coil. Replacing it was a relatively simple process, and it got us back to work quickly. This experience taught me the importance of understanding the ignition system and having the right tools and knowledge to troubleshoot it.
Diagnosing Spark Issues on the MS880: A Step-by-Step Guide
Before you start replacing parts, it’s crucial to pinpoint the exact cause of the no-spark issue. Here’s a systematic approach:
1. Safety First
- Disconnect the spark plug wire: Always disconnect the spark plug wire before working on the ignition system to prevent accidental starting.
- Wear gloves: Use insulated gloves to protect yourself from electrical shock.
2. Check the Spark Plug
The spark plug is the most common culprit for no-spark issues.
- Visual inspection: Remove the spark plug and inspect it for damage, carbon buildup, or excessive wear. A fouled spark plug can prevent a spark from occurring.
- Cleaning: Clean the spark plug with a wire brush or spark plug cleaner.
- Testing: Use a spark plug tester to check if the spark plug is producing a spark. Connect the tester to the spark plug and ground it against the engine. Pull the starter cord and observe if a spark jumps across the tester’s gap.
- Replacement: If the spark plug is damaged or doesn’t produce a spark, replace it with a new one. Ensure you use the correct spark plug for your MS880 (typically an NGK BPMR6A or equivalent).
Cost Considerations: A new spark plug typically costs between $5 and $10.
3. Inspect the Spark Plug Wire and Boot
The spark plug wire and boot connect the ignition coil to the spark plug.
- Visual inspection: Check the wire for cracks, cuts, or damage. Inspect the boot for tears or looseness.
- Continuity test: Use a multimeter to check the continuity of the spark plug wire. Disconnect the wire from both the spark plug and the ignition coil. Set the multimeter to the continuity setting and connect the probes to each end of the wire. If the multimeter doesn’t show continuity, the wire is faulty and needs to be replaced.
- Secure connection: Ensure the spark plug wire is securely connected to both the spark plug and the ignition coil. A loose connection can prevent the spark from reaching the spark plug.
Cost Considerations: A new spark plug wire and boot assembly can cost between $10 and $20.
4. Check the Ignition Coil
The ignition coil is the heart of the ignition system.
- Visual inspection: Check the coil for any signs of damage, such as cracks, melted plastic, or corrosion.
- Air Gap: Make sure the air gap between the coil and the flywheel is correct. This gap is critical for proper spark generation. Use a business card or a specialized air gap tool to set the correct distance, typically around 0.012″ – 0.020″ (0.3mm – 0.5mm).
- Resistance test: Use a multimeter to measure the resistance of the primary and secondary windings of the ignition coil. Refer to the MS880 service manual for the correct resistance values. If the resistance is outside the specified range, the coil is likely faulty and needs to be replaced.
- Testing with a spark tester: Connect the spark plug to the spark plug wire and ground the spark plug against the engine. Pull the starter cord and observe if a spark jumps across the spark plug gap. If there’s no spark, the ignition coil may be faulty.
Cost Considerations: A new aftermarket ignition coil for the MS880 can range from $30 to $80, while a genuine Stihl coil can cost between $80 and $150.
5. Check the Kill Switch and Wiring
The kill switch is designed to ground the ignition system and stop the engine.
- Visual inspection: Check the kill switch and its wiring for any signs of damage, such as frayed wires, loose connections, or corrosion.
- Continuity test: Disconnect the kill switch from the ignition coil. Use a multimeter to check the continuity of the switch in both the “on” and “off” positions. In the “on” position, the switch should not have continuity. In the “off” position, the switch should have continuity. If the switch doesn’t function as expected, it may be faulty and needs to be replaced.
- Wiring harness: Check the wiring harness for any shorts or breaks. A damaged wiring harness can prevent the ignition system from functioning correctly.
Cost Considerations: A new kill switch typically costs between $5 and $15.
6. Inspect the Flywheel
The flywheel contains magnets that generate the electrical current for the ignition system.
- Visual inspection: Check the flywheel for any signs of damage, such as cracks, missing magnets, or corrosion.
- Magnet strength: Use a screwdriver or other metal object to test the strength of the magnets. The magnets should be strong enough to hold the screwdriver firmly in place. If the magnets are weak, the flywheel may need to be replaced.
- Keyway: Check the keyway on the flywheel and the crankshaft. A sheared key can cause timing issues and prevent the engine from starting.
Cost Considerations: A new flywheel can cost between $50 and $150.
7. Check the Fuel System
While not directly related to the ignition system, a faulty fuel system can mimic a no-spark issue.
- Fuel quality: Ensure the fuel is fresh and properly mixed with oil. Old or improperly mixed fuel can cause starting problems.
- Fuel filter: Check the fuel filter for clogs or debris. A clogged fuel filter can restrict fuel flow and prevent the engine from starting.
- Carburetor: Inspect the carburetor for dirt, varnish, or other obstructions. A dirty carburetor can prevent the engine from getting the fuel it needs to start.
Cost Considerations: A new fuel filter typically costs between $5 and $10. Carburetor rebuild kits can range from $20 to $50.
Budgeting for Repairs: A Cost Breakdown
Repairing a chainsaw can be expensive, but with a bit of knowledge and some careful planning, you can keep costs down. Here’s a breakdown of the typical costs associated with fixing spark issues on an MS880:
- Spark Plug: $5 – $10
- Spark Plug Wire and Boot: $10 – $20
- Aftermarket Ignition Coil: $30 – $80
- Genuine Stihl Ignition Coil: $80 – $150
- Kill Switch: $5 – $15
- Flywheel: $50 – $150
- Fuel Filter: $5 – $10
- Carburetor Rebuild Kit: $20 – $50
- Labor (if you hire a professional): $50 – $100 per hour
Total Estimated Cost: $25 – $525 (depending on the parts needed and whether you do the work yourself)
Data-Backed Insights on Timber Prices and Equipment Rental Fees:
According to the USDA Forest Service, timber prices fluctuate significantly based on species, grade, and location. For example, in the Pacific Northwest, Douglas fir sawtimber can range from $500 to $800 per thousand board feet (MBF), while in the Southeast, pine sawtimber might range from $300 to $500 per MBF. These prices directly impact the profitability of logging operations and influence the budget allocated for equipment maintenance and repairs.
Equipment rental fees also vary by region and equipment type. A heavy-duty log splitter can cost between $100 and $200 per day to rent, while a skidder might cost $500 to $1000 per day. These costs need to be factored into the overall budget for wood processing projects.
Statistical Data on Fuelwood Market Rates:
The price of firewood varies widely depending on location, species, and whether it’s seasoned or unseasoned. According to the U.S. Energy Information Administration (EIA), the average price of a cord of firewood in the United States ranges from $150 to $400. However, in some areas, particularly those with high demand and limited supply, prices can be significantly higher.
Practical Tips for Cost Optimization
- Do it yourself: If you’re comfortable working on small engines, you can save a lot of money by doing the repairs yourself. There are plenty of online resources, including videos and forums, that can help you troubleshoot and fix your chainsaw.
- Buy aftermarket parts: Aftermarket parts are often significantly cheaper than genuine Stihl parts. However, it’s important to choose reputable brands to ensure quality and reliability.
- Shop around: Compare prices from different retailers before buying parts. You may be able to find a better deal online or at a local hardware store.
- Preventive maintenance: Regular maintenance can help prevent costly repairs down the road. Keep your chainsaw clean, sharpen the chain regularly, and use fresh fuel.
- Proper storage: Store your chainsaw in a dry place to prevent corrosion and damage. Drain the fuel tank before storing the chainsaw for extended periods.
Case Study: Budgeting for a Firewood Preparation Project
Let’s say you’re planning to prepare 10 cords of firewood for the winter. Here’s a breakdown of the estimated costs:
- Timber Purchase: $50 – $150 per cord (depending on species and location) = $500 – $1500
- Chainsaw Maintenance (including potential repairs): $50 – $100
- Log Splitter Rental: $100 – $200 per day (assuming 2 days of rental) = $200 – $400
- Fuel and Oil: $50 – $100
- Labor (if you hire help): $20 – $30 per hour (assuming 20 hours of labor) = $400 – $600
- Permits (if required): $0 – $50
Total Estimated Cost: $1200 – $2750
Cost per Cord: $120 – $275
As you can see, the cost of preparing firewood can vary significantly depending on several factors. By carefully budgeting and planning, you can minimize your expenses and ensure you have a warm winter without breaking the bank.
Calculating Log Volume: Board Feet and Cords
Understanding how to calculate log volume is crucial for accurate cost estimation. Here’s a brief overview:
- Board Foot: A board foot is a unit of measurement for lumber, equal to 1 inch thick, 12 inches wide, and 12 inches long.
- Cord: A cord is a unit of measurement for firewood, equal to a stack of wood 4 feet high, 4 feet wide, and 8 feet long, totaling 128 cubic feet.
To calculate the volume of a log in board feet, you can use the Doyle Log Scale formula:
- Board Feet = (Diameter in inches – 4)² x Length in feet / 16
To estimate the number of cords in a stack of wood, you can use the following formula:
- Cords = Length x Width x Height / 128
Estimating Drying Time for Firewood
Drying firewood is essential for efficient burning and reducing creosote buildup in your chimney. The drying time depends on several factors, including wood species, climate, and how the wood is stacked.
As a general rule, firewood should be dried for at least six months, and preferably a year, before burning. Here’s a formula to estimate drying time based on moisture content:
- Drying Time (months) = (Initial Moisture Content – Target Moisture Content) / Drying Rate
The drying rate varies depending on the climate. In a dry climate, the drying rate might be 2-3% per month, while in a humid climate, it might be 1-2% per month.
The Importance of Proper Chainsaw Maintenance
Regular chainsaw maintenance is crucial for ensuring optimal performance and longevity. Here are some key maintenance tasks:
- Sharpening the chain: A sharp chain cuts more efficiently and reduces strain on the engine.
- Cleaning the air filter: A clean air filter ensures proper airflow to the engine.
- Checking the spark plug: A clean and properly gapped spark plug ensures reliable ignition.
- Lubricating the chain: Proper chain lubrication reduces friction and wear.
- Maintaining the fuel system: Use fresh fuel and clean the fuel filter regularly.
Global Perspectives on Wood Processing and Firewood Preparation
Wood processing and firewood preparation are essential activities in many parts of the world. In some regions, such as Scandinavia and Eastern Europe, firewood is a primary source of heating. In other regions, such as North America and Australia, wood processing is a significant industry, providing lumber and other wood products for construction and manufacturing.
The challenges faced by small-scale loggers, firewood suppliers, and independent wood processors vary depending on the region. In some areas, access to timber is limited, while in others, competition from larger companies is a major challenge. In all regions, however, cost management is crucial for success.
Overcoming Challenges: My Personal Experiences
I’ve spent years working with wood, from felling trees to processing firewood. Along the way, I’ve learned a few things about overcoming challenges and managing costs.
One of the biggest challenges I’ve faced is dealing with unexpected equipment failures. Chainsaws, log splitters, and other tools can break down at the most inconvenient times, costing time and money. To mitigate this risk, I always keep a spare chainsaw and a well-stocked toolbox on hand. I also make sure to perform regular maintenance on all my equipment to prevent breakdowns.
Another challenge is dealing with fluctuating timber prices. Timber prices can vary significantly depending on the species, grade, and location. To minimize this risk, I try to source timber from multiple suppliers and negotiate favorable prices. I also try to add value to the timber by processing it into lumber or firewood, which can command higher prices.
Actionable Takeaways and Next Steps
If you’re experiencing spark issues with your MS880 chainsaw, the first step is to diagnose the problem systematically. Start by checking the spark plug, spark plug wire, and ignition coil. If you’re comfortable working on small engines, you can do the repairs yourself and save money. If not, consider hiring a professional.
Here are some actionable takeaways:
- Always prioritize safety when working on chainsaws.
- Diagnose the problem systematically before replacing parts.
- Consider buying aftermarket parts to save money.
- Perform regular maintenance to prevent breakdowns.
- Shop around for the best prices on parts and services.
By following these tips, you can keep your MS880 chainsaw running smoothly and efficiently, and you can manage your costs effectively.
Final Thoughts: A Spark of Hope
Dealing with a chainsaw that won’t start can be frustrating, but with a bit of knowledge and some perseverance, you can get it running again. Remember to prioritize safety, diagnose the problem systematically, and don’t be afraid to ask for help if you need it. With a little effort, you can keep your MS880 chainsaw in top condition and tackle any wood processing or firewood preparation project with confidence. After all, a little spark is all it takes to ignite a lot of potential.
