How To Start A Stihl Chain Saw: A Step-by-Step Guide

What is the Stihl chainsaw starting procedure? Starting a Stihl chainsaw involves a series of steps including safety checks, priming the engine, setting the choke, pulling the starter cord, and adjusting the throttle. This guide breaks down each step for both cold and warm starts, ensuring a smooth and safe operation.

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Getting Ready to Start Your Stihl Chainsaw

Before you even think about pulling that starter cord, preparation is key. A little time spent on safety and checks can save you from injury and frustration.

Stihl Chainsaw Safety Start: Prioritizing Your Well-being

Safety first! Always wear the appropriate safety gear:

• Eye protection: Safety glasses or a face shield.
• Hearing protection: Earplugs or earmuffs.
• Gloves: To improve your grip and protect your hands.
• Long pants and sturdy boots: To protect your legs and feet.

Make sure the chainsaw is on a stable, flat surface, away from flammable materials. Keep bystanders at a safe distance.

Performing Essential Pre-Start Checks

Before each use, inspect your chainsaw:

• Chain: Check for sharpness and proper tension. A dull chain is dangerous! The chain should move freely but not sag.
• Bar: Ensure the bar is properly lubricated and not damaged.
• Fuel and Oil Levels: Make sure both the fuel and chain oil tanks are adequately filled. Never start the chainsaw without chain oil – it will ruin the bar and chain.
• Throttle Trigger and Lockout: Check that the throttle trigger and lockout function correctly. The chain should not move when the engine is idling.
• Spark Arrestor: Confirm the spark arrestor screen is clean. A clogged screen can cause the engine to overheat.

Mixing the Right Fuel for Success: Stihl Chainsaw Fuel Mixture

Stihl chainsaws use a two-stroke engine, requiring a specific fuel mixture. Using the wrong mixture can damage the engine.

• Ratio: Typically, Stihl recommends a 50:1 fuel-to-oil ratio. This means 50 parts gasoline to 1 part two-stroke oil.
• Gasoline: Use high-quality gasoline with a minimum octane rating of 89. Avoid using fuel containing ethanol if possible, as it can damage the engine. If you must use fuel with ethanol, use it quickly and don’t let it sit in the saw.
• Two-Stroke Oil: Use Stihl-branded two-stroke oil for optimal performance and engine protection. Other high-quality two-stroke oils can be used, but ensure they meet or exceed the specifications recommended by Stihl.
• Mixing: Mix the fuel and oil thoroughly in a separate, clean fuel container. Shake well before filling the chainsaw’s fuel tank.

Here’s a quick reference table:

Gasoline (Gallons)	Two-Stroke Oil (Ounces)
1	2.6
2	5.2
2.5	6.4

Starting a Cold Stihl Chainsaw: A Detailed Guide

A cold start means the engine hasn’t been running recently and is completely cold. This requires a specific procedure to get it going.

Activating the Choke: Stihl Chainsaw Choke Position

The choke enriches the fuel mixture, making it easier to start a cold engine.

• Locate the Choke: The choke lever is typically located near the carburetor. Its position varies depending on the Stihl chainsaw model, but it is usually marked with a choke symbol.
• Engage the Choke: Move the choke lever to the fully closed position. This usually involves pushing or pulling the lever outwards. Consult your owner’s manual for the exact location and operation of the choke on your specific model.

Priming the Engine: Priming a Stihl Chainsaw

Priming introduces fuel directly into the carburetor, aiding in the starting process.

• Locate the Primer Bulb: The primer bulb is a small, clear plastic bulb located near the carburetor.
• Press the Primer Bulb: Press the primer bulb several times (usually 5-8 times) until you see fuel flowing through the bulb. This indicates that fuel is being drawn into the carburetor.

The Initial Start: Pulling the Cord

Now it’s time to pull the starter cord.

• Placement: Place the chainsaw firmly on the ground, ensuring the chain is not touching anything. Use your left hand to grip the front handle securely. Place your right foot through the rear handle for stability.
• Pull the Cord: Gently pull the starter cord handle until you feel resistance. This engages the starter mechanism. Then, give the cord a sharp, full pull. Do not pull the cord all the way out.
• Listen for a Pop: After a few pulls, the engine should “pop” or briefly sputter. This indicates that the engine is getting fuel and is attempting to start.

Disengaging the Choke

Once the engine pops, disengage the choke to allow the engine to run smoothly.

• Move the Choke Lever: Move the choke lever to the half-choke position (if available) or to the open position.
• Continue Pulling: Continue pulling the starter cord until the engine starts and runs smoothly.

Warming Up the Engine

Let the engine run for a few moments to warm up. This allows the engine to reach its optimal operating temperature.

• Idle Speed: The engine may initially run rough or stall. Allow it to idle for a minute or two to stabilize.
• Throttle Blips: Gently blip the throttle to clear out any remaining fuel and ensure smooth acceleration.

Starting a Warm Stihl Chainsaw: A Streamlined Approach

A warm start is easier because the engine is already partially heated.

Skip the Choke (Usually)

In most cases, a warm engine doesn’t need the choke.

• Choke Position: Leave the choke in the open position.

No Priming Necessary

Priming is generally not required for a warm start.

• Skip Priming: Proceed directly to pulling the starter cord.

Pulling the Cord: A Quick Start

The process is the same as with a cold start, but usually requires fewer pulls.

• Placement: Secure the chainsaw on the ground, as before.
• Pull the Cord: Pull the starter cord sharply and fully until the engine starts. It should start relatively easily.

Stihl Chainsaw Troubleshooting Start: Common Issues and Fixes

Even with the best technique, problems can arise. Here are some common issues and how to address them:

Stihl Chainsaw Flooding Fix: Clearing a Flooded Engine

Flooding occurs when too much fuel enters the engine, preventing it from starting.

• Symptoms: The engine may smell strongly of fuel and refuse to start.
• Solution:
  • Remove Spark Plug: Remove the spark plug and dry it thoroughly.
  • Clear the Cylinder: Pull the starter cord several times with the spark plug removed to clear excess fuel from the cylinder.
  • Reinstall Spark Plug: Reinstall the spark plug and try starting the engine without the choke.

Stihl Chainsaw Pull Cord Problems: Diagnosing and Resolving Issues

A stuck or difficult-to-pull starter cord can be frustrating.

• Causes:
  • Engine Seizure: The engine may be seized due to lack of lubrication or overheating.
  • Pawls: The pawls (small mechanisms that engage the flywheel) may be stuck or broken.
  • Cord Binding: The starter cord may be tangled or binding within the recoil mechanism.
• Solutions:
  • Check Engine: Ensure the engine is not seized by trying to manually turn the flywheel.
  • Inspect Pawls: Remove the starter assembly and inspect the pawls for damage or debris. Clean and lubricate them if necessary.
  • Replace Cord: If the cord is damaged or tangled, replace it with a new one.

No Spark: Inspecting the Ignition System

If the engine is getting fuel but not starting, the ignition system may be the problem.

• Check Spark Plug:
  • Remove and Inspect: Remove the spark plug and inspect it for damage or fouling.
  • Test for Spark: Reconnect the spark plug to the spark plug wire and ground the electrode against the engine. Pull the starter cord. You should see a strong, blue spark.
• Inspect Ignition Coil:
  • Check Wiring: Ensure the wiring to the ignition coil is intact and properly connected.
  • Replace Coil: If the spark is weak or non-existent, the ignition coil may need to be replaced.

Fuel Delivery Issues: Identifying and Resolving Problems

Problems with fuel delivery can also prevent the chainsaw from starting.

• Fuel Filter:
  • Check Filter: Check the fuel filter inside the fuel tank. A clogged filter can restrict fuel flow.
  • Replace Filter: Replace the fuel filter if it is dirty or clogged.
• Fuel Lines:
  • Inspect Lines: Check the fuel lines for cracks, leaks, or blockages.
  • Replace Lines: Replace any damaged or deteriorated fuel lines.
• Carburetor:
  • Clean Carburetor: A dirty or clogged carburetor can prevent fuel from reaching the engine. Clean the carburetor using carburetor cleaner.
  • Rebuild Carburetor: If cleaning doesn’t resolve the issue, the carburetor may need to be rebuilt or replaced.

Troubleshooting Table

Problem	Possible Cause	Solution
Engine won’t start (cold)	Choke not engaged	Engage choke
	Fuel not reaching carburetor	Prime engine, check fuel filter/lines
Engine won’t start (warm)	Flooded engine	Remove spark plug, clear cylinder, try starting without choke
Pull cord hard to pull	Engine seizure	Check engine lubrication, check for overheating
	Stuck pawls	Inspect and clean pawls in starter assembly
No spark	Faulty spark plug	Replace spark plug
	Faulty ignition coil	Replace ignition coil
Engine starts then stalls	Dirty carburetor	Clean or rebuild carburetor
	Improper fuel mixture	Use correct fuel mixture (50:1)

Keeping Your Chainsaw Running Smoothly: Maintenance Tips

Regular maintenance is essential for extending the life of your chainsaw and ensuring reliable starting.

• Clean Air Filter: Clean the air filter regularly to maintain proper airflow to the engine.
• Sharpen Chain: Keep the chain sharp for efficient cutting and reduced strain on the engine.
• Check Spark Plug: Inspect the spark plug regularly and replace it when necessary.
• Empty Fuel Tank: If you’re storing the chainsaw for an extended period, empty the fuel tank to prevent fuel from going stale.
• Store Properly: Store the chainsaw in a dry, clean place.

FAQ: Common Questions About Starting Stihl Chainsaws

• Why won’t my Stihl chainsaw start even after following all the steps?

  If your Stihl chainsaw won’t start after following all the steps, the issue could stem from several factors, including a fouled spark plug, a clogged fuel filter, or a malfunctioning carburetor. Start by inspecting the spark plug for signs of wear or fouling. If it appears dirty or damaged, replace it with a new one. Next, check the fuel filter and fuel lines for any blockages or damage. Replace the fuel filter if it’s dirty. If the problem persists, the carburetor might need cleaning or rebuilding.

• Can I use regular gasoline in my Stihl chainsaw?

  No, you shouldn’t use regular gasoline alone in your Stihl chainsaw. Stihl chainsaws have a 2-stroke engine which require a mix of gasoline and 2-stroke oil. Using regular gasoline without the oil can cause severe engine damage.

• What do I do if my Stihl chainsaw starts but then immediately stalls?

  If your Stihl chainsaw starts but stalls right away, the carburetor might be dirty or improperly adjusted. A too-lean fuel mixture can cause this behavior. Clean the carburetor and check the fuel mixture settings. If that doesn’t work, take it to a qualified repair technician.

• How often should I replace the spark plug on my Stihl chainsaw?

  The spark plug on your Stihl chainsaw should be replaced annually or after every 100 hours of use, whichever comes first. Regular replacement ensures optimal engine performance.

• What is the best way to store my Stihl chainsaw for the winter?

  To properly store your Stihl chainsaw for the winter, start by emptying the fuel tank to prevent fuel from going stale and damaging the carburetor. Clean the chainsaw thoroughly, paying special attention to the air filter, spark plug, and chain. Remove the chain and bar, clean them, and apply a rust inhibitor. Store the chainsaw in a dry, clean place, away from direct sunlight and extreme temperatures.