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how to start a stihl chainsaw

To safely and reliably start a STIHL chainsaw, you need to follow a specific sequence : safety checks, correct control‑lever/choke position, secure starting stance on the ground, and then a few firm pulls on the starter cord until the engine fires and idles.

Quick Scoop: Key Steps

1. Safety and Pre‑Start Checks

  • Put on PPE: eye protection, hearing protection, gloves, sturdy boots, and cut‑resistant chaps or pants.
  • Make sure the chain brake is engaged (pushed forward so the chain cannot move).
  • Check chain tension (no sag, but you can pull drive links slightly out of the bar groove by hand).
  • Confirm fresh fuel mix (for petrol models, typically 2‑stroke mix) and bar oil are filled, with caps closed securely.
  • Place the saw on clear, level ground where the chain cannot touch anything.

2. Set Controls for Cold Start

Most modern STIHL petrol saws have a Master Control Lever with positions like: Stop (0), Run (I), Warm Start, and Choke/Cold Start (bottom position).

  1. Engage the chain brake.
  2. Press the throttle trigger lockout and the throttle trigger, then move the Master Control Lever down to Choke/Cold start (lowest position).
  3. If your saw has a primer bulb, press it 2–3 times to pull fuel into the carburetor (you won’t “over‑prime”; excess fuel returns to the tank).

This puts the saw into a rich‑fuel cold‑start mode so it can fire quickly.

3. Ground Starting Position (Recommended)

Use the ground‑start method, which is the standard STIHL recommendation for control and safety:

  • Put the saw flat on the ground.
  • Ensure the guide bar and chain are clear of obstacles and not touching the ground.
  • Place your right foot through or on the rear handle to pin the saw down.
  • Grip the front handle firmly with your left hand , arm straight to hold the saw steady.

This stance keeps the saw stable and the bar away from your body as it starts.

4. Pulling to First “Fire” (Cold Engine)

  1. With the saw secured and Master Control Lever on Choke:
    • Pull the starter rope slowly until you feel resistance, then pull sharply and straight up.
    • Avoid letting the rope scrape against the housing and always let it rewind under control.
  2. Expect the engine to “burp” or briefly fire after about 3–5 pulls.
  3. As soon as you hear that first fire, move the Master Control Lever up one step (usually to a half‑choke or warm‑start position).

If you keep pulling on full choke after the first fire, you risk flooding the engine.

5. Starting to Idle (Warm‑Start Position)

  1. With the lever now at half‑choke or warm‑start:
    • Keep the same secure stance.
    • Pull the starter rope again, sharply and straight up.
  2. The engine should fully start within a few pulls and begin running.
  3. Tap the throttle trigger once; this usually allows the Master Control Lever to spring up into the normal Run (I) position and lets the saw settle into idle.

Let the saw idle for a short moment so oil circulates and the engine warms slightly.

6. Ready to Cut

  • Pick the saw up without touching the throttle yet.
  • With both hands on the handles and solid footing, pull the chain brake handle back toward you until it clicks to release the brake.
  • Squeeze the throttle gently; the chain will begin to move.
  • You are now ready to start cutting, following proper cutting techniques and kickback precautions.

Warm Start (Saw Recently Used)

If the chainsaw has been running recently and is still warm:

  • Engage chain brake and place the saw on the ground as before.
  • Set the Master Control Lever to the warm‑start or Run (I) position (some models use a mid‑position).
  • Skip full choke; you might only need a half‑choke or even no choke at all.
  • Pull the starter rope a few times until the engine starts and idles.
  • Tap the throttle to move the lever into normal run, release the chain brake, and resume work.

If You Flood the Engine

Common signs of flooding: strong fuel smell, saw won’t start but keeps “almost” firing. Typical recovery approach:

  • Move the Master Control Lever to the Run (I) position to reduce fuel.
  • Open the throttle fully (depending on model) and pull the starter rope several times to clear excess fuel.
  • If it still won’t start, you may need to remove and dry or replace the spark plug, then try again on a reduced‑choke or warm‑start setting.

(Always follow your exact model’s manual for flood‑clear instructions.)

Mini Forum‑Style Tips & “Obvious Things” People Miss

“I read the manual a dozen times and still missed one tiny lever position…”

Common gotchas:

  • Not engaging the throttle trigger and lockout before trying to move the Master Control Lever to full choke.
  • Forgetting the chain brake, letting the chain spin right at startup.
  • Trying to start with the saw in the air instead of on the ground.
  • Repeatedly pulling on full choke after the engine fires once, flooding it.

A simple real‑world pattern many users follow:

  1. Full choke until the first short “pop”.
  2. Immediately up one notch (half‑choke/warm‑start).
  3. Pull again until it runs.
  4. Tap throttle to go to Run.
  5. Release chain brake, then cut.

HTML Table: Quick Reference

html

<table>
  <thead>
    <tr>
      <th>Situation</th>
      <th>Control Lever</th>
      <th>Key Actions</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>Cold start</td>
      <td>Choke / Cold start (bottom)</td>
      <td>Engage chain brake, place on ground, foot in rear handle, pull 3–5 times until first fire, then move up one step and pull to start.</td>
    </tr>
    <tr>
      <td>Warm start</td>
      <td>Warm‑start or Run (I)</td>
      <td>Chain brake on, no full choke, a few pulls until it starts, tap throttle to go to Run and idle.</td>
    </tr>
    <tr>
      <td>After flooding</td>
      <td>Run (I)</td>
      <td>Throttle open (as manual specifies), pull repeatedly to clear fuel; if needed, dry/replace plug and retry with reduced choke.</td>
    </tr>
    <tr>
      <td>Ready to cut</td>
      <td>Run (I)</td>
      <td>Lift saw, release chain brake with a pull back, hold firmly with two hands, apply throttle and start cutting safely.</td>
    </tr>
  </tbody>
</table>

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Learn how to start a STIHL chainsaw safely and correctly, from cold and warm starts to avoiding flooding, with clear, step‑by‑step instructions and practical tips.

Bottom note: Information gathered from public forums or data available on the internet and portrayed here.