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We currently only cover the following areas : Gloucestershire, South Herefordshire and Monmouthshire

Very powerful high-performance saw with advanced 2-MIX technology and STIHL M-Tronic (M). This electronic engine management system regulates the ignition timing and the fuel supply and automatically registers the external temperature for optimal engine performance, great acceleration and sustained maximum torque. Extremely robust and durable with low vibration levels. Designed for professional use within forestry and big timber harvesting. Supplied with rollomatic E guide bar, not rollomatic ES light as pictured.


  • High-performance petrol saw for even the toughest jobs
  • For professional hardwood forestry
  • Easy starting and optimised engine performance with STIHL M-Tronic
  • Competition chainsaw in the STIHL TIMBERSPORTS® series

STIHL MS 661 Petrol chainsaw

SKU: 1144-200-0324
Sales Tax Included
Call us 01594 516613 for expected delivery date.
  • Bar length 71-90 cm
    Bar length 28-36 in
    Displacement 91.1 cm³
    STIHL Oilomatic saw chain pitch/type 3/8" RS
    Power output 5.4/7.3 kW/bhp
    Weight 7.5 kg 1)
    Tank volume 0.85 l
    Speed at maximum power 9500 rpm
    Bumper spike Steel claw
    Sprocket - number of teeth 7 Z
    Power-to-weight ratio 1.4 kg/kW
    Cylinder Chrome
    Filter material PET fabric
    Oil pump Adjustable
    Filter Cartridge filter HD2,HD2 filter
    Sprocket Ring sprocket
    Chain tensioning Lateral chain tensioning
    Anti vibration system Standard AV-System
    Weight 9.22 / 10.38 kg 2)
    Handle type Standard grip
    Exhaust Standard muffler,Standard silencer
    Filler cap Tool free filler cap,WTV tool-free tank cap
    Chain pitch 3/8"
    Carburettor STIHL M-Tronic
    Sound pressure level 105 dB(A) 3)
    EPA Certified fuel consumption 0.751 glh
    EPA Certified fuel consumption 2.841 l/h
    Oil tank volume 400 cm³
    Sound power level 118 dB(A) 3)
    Vibration values left/right 6.9/5.6 m/s2 4)
    STIHL Oilomatic saw chain pitch/type 3/8"
    CO² ­ 711 g/kWh
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