Introduction

In the fast-moving world of power tools, 16 years is usually a lifetime. Battery technology evolves, emissions standards tighten, and new models come and go. But then there’s the STIHL MS 661 C-M.

Released back in 2010, this beast of a saw is about to celebrate its "Sweet 16," and it’s showing absolutely no signs of slowing down. For forestry contractors in the Bay of Plenty—from the deep pines of Kaingaroa to the steep terrain of the Kaimais—the MS 661 isn’t just a tool; it’s a legend.

Here is why STIHL's flagship professional chainsaw is still the undisputed King of the Forest.


M-Tronic Changed the Game

When the MS 661 launched, it brought a revolution: STIHL M-Tronic™ engine management.

Before this, adjusting carburetors for altitude or temperature on a crisp Tauranga morning versus a hot afternoon in the forest was a daily ritual. M-Tronic changed that overnight. By electronically controlling the fuel supply and ignition timing, it ensures optimal engine performance in all conditions.

Whether you're starting it cold on a frost-covered Te Puke orchard or running it hot clearing big gums, the MS 661 just runs. No manual carburetor adjustments. No fuss. Just pure, unadulterated power.


Power-to-Weight Perfection

At 7.3 hp (5.4 kW), the MS 661 C-M is built for extreme loads. It’s designed to pull long guide bars through the hardest NZ native timber or massive Radiata Pine without bogging down.

But power is nothing if you can’t wield it. Weighing in at just 7.4 kg (powerhead only), it boasts an incredible power-to-weight ratio. For our local arborists climbing sprawling oaks in the Avenues or forestry crews felling all day, that balance means less fatigue and more productivity.


Built for the Bay of Plenty

Our region throws everything at equipment. We have abrasive volcanic dust, high humidity, and heavy sap loads. The MS 661 C-M features the HD2 Air Filter, which keeps even the finest dust away from the engine, extending service intervals and engine life.

It's this durability that keeps local contractors coming back. We see 10-year-old 661s come into our Elizabeth Street workshop that, with regular maintenance, are still pulling chips like they did on day one.


The "Sweet 16" Verdict

Why fix what isn't broken? While STIHL continues to innovate with the incredible MSA battery range (like the MSA 300), the MS 661 C-M holds the line for heavyweight petrol performance.

It has survived the test of time because it got everything right:

  • Anti-vibration system for all-day comfort.
  • Captive nuts on the sprocket cover (no more losing them in the scrub!).
  • Variable-displacement oil pump to save bar oil.

The STIHL MS 661 C-M proves that true quality doesn’t age. As it approaches its 16th birthday, it remains the benchmark for professional felling saws. If you have big wood to move in the Bay, there is still only one choice.

Come see the legend yourself at STIHL SHOP Tauranga.