MS 500¡ Petrol Chainsaw

Designed for high-production felling and big-stem dismantling, the MS 500i’s electronic fuel-injection system measures air pressure, internal and ambient temperature hundreds of times a second, metering fuel precisely so full 5 kW power arrives in milliseconds and stays constant at altitude or in cold starts. A lightweight magnesium piston and compact crankcase keep the dry weight to 6.3 kg, producing a class-leading 1.24 kg/kW power-to-weight ratio that foresters normally associate with 60 cc saws, not 80 cc.

Key features

• Fuel-injected 79.2 cm³ 2-MIX engine (5.0 kW) – 20% lower fuel use and 50% fewer emissions vs. non-stratified engines.
• Best-in-class 1.24 kg/kW ratio – lighter than many 60 cc saws yet more powerful than most 90 cc units.
• Instant throttle response – no mechanical carburettor lag; perfect for bore cuts and fast bore release.
• Long-life HD2 filtration – fleece element plus cyclone pre-separation multiplies service intervals five-fold.
• Adjustable oil-pump & side tensioner – tune flow for bar length and make safe chain adjustments with a scrench.

Technical highlights

Why professionals love it

With unmatched power-to-weight, auto-tuned injection, extended filter intervals and adjustable oil flow, the MS 500i fells, bucks and rings out sawlogs faster than any conventional carburettor saw in the 80 cc class—while saving fuel and reducing downtime.