MS 500¡ Petrol Chainsaw

STIHL MS 500i is the world’s first fuel-injected chainsaw, pairing a 79.2 cc 2-MIX engine and electronic injection with a 5.0 kW output; even with a 20–25″ bar it tips the scales at just 6.3 kg, giving a class-leading 1.24 kg/kW power-to-weight ratio while its 785 ml fuel and 330 ml oil tanks keep you cutting longer between fills.

£1,829.00

Please enquire for pricing

Secure Payments:

Engineered for high-production felling and big-stem takedowns, the MS 500i’s electronic fuel-injection system measures air pressure and both internal and ambient temperature hundreds of times a second, delivering instant throttle response and full power in milliseconds. At 5.0 kW from only 79.2 cc the saw rivals many 90 cc competitors, yet its magnesium-alloy crankcase and lightweight flywheel keep the power-head to just 6.3 kg, yielding an unrivalled 1.24 kg kW⁻¹ ratio that crews notice the moment they pick it up.

Key features

  • Electronically controlled fuel injection – first on any production saw, giving blistering acceleration and automatic altitude/temperature compensation.
  • 79.2 cc, 5.0 kW 2-MIX engine – 6.7 bhp on tap with up to 20 % fuel-saving versus non-stratified engines.
  • Ultra-low weight 6.3 kg – magnesium piston/crankcase and slim housing keep fatigue down on big timber.
  • Recommended 20–25″ Light 04 bars – balances perfectly for hardwood felling, bucking and ringing out saw-logs.
  • Professional AV & HD2 filtration – 4.2 / 4.0 m s⁻² vibration and fleece filter extend run-time and service intervals.

Technical highlights

Displacement 79.2 cc
Engine power 5.0 kW / 6.7 bhp
Dry weight 6.3 kg (13.9 lb) power-head
Bar length range 50–63 cm (20–25″) Light 04 & Rollomatic ES
Chain spec 3/8″ RS3 or RS Rapid Super (full-chisel)
Fuel capacity 785 ml / 26.5 fl oz
Oil capacity 330 ml / 11 fl oz
Sound power level 119 dB(A) LWA
Vibration (L / R) 4.2 / 4.0 m s⁻²

Why pro fallers choose it

From its snap-fast throttle and unbeatable power-to-weight to the huge 25″ cutting capacity and tool-free side tensioner, the MS 500i slashes felling times, reduces fatigue and shrugs off altitude swings—making it the go-to big-wood saw for loggers, arborists and mill owners alike.

Frequently Asked Questions

The injection system constantly measures air pressure and temperature, then meters fuel precisely, giving instant throttle response, easier starts and no manual re-tuning at altitude.

STIHL pairs the 500i with 20″, 25″ or 28″ Light 04 or Rollomatic ES bars using 3/8″ RS3 or RS full-chisel chains for fast cutting.

At 6.3 kg and 5.0 kW, the saw achieves about 1.24 kg kW⁻¹—one of the best ratios in its class.

The 785 ml fuel tank gives roughly 45 minutes of heavy bucking before refuelling, with the 330 ml oil tank matched to run dry at the same time.

Yes—anti-vibration buffers keep handle vibrations to about 4.2 m s⁻² (left) and 4.0 m s⁻² (right), comparable to smaller farm saws and within HSE daily exposure limits.

KEEP IN TOUCH

Do you have a question you would like to ask us? Simply enter your details and message below and we will be in touch soon.

The above information will be used to respond to your enquiry and is kept private and confidential. We do not disclose your information to third parties.

COME TO VISIT US

Visit our store in Tranent for all your parts, equipment and work wear requirements.
now open!

Monday

8am - 5pm

Tuesday

8am - 5pm

Wednesday

8am - 5pm

Thursday

8am - 5pm

Friday

8am - 5pm

Saturday

8am - 12pm

Sunday

Closed