MS 500i Petrol Chainsaw

The STIHL MS 500i petrol chainsaw is an innovative tool and the world’s first chainsaw with electronically controlled fuel injection. Its agile, performance-optimised engine accelerates very quickly. Thanks to its extremely successful lightweight design, this tool achieves an impressively low power-to-weight ratio of 1.24 kg/kW. This high-torque machine is a powerful solution for use in professionally harvesting large timber.

The MS 500i features a simple start-up sequence as well as very good starting behaviour under all usage conditions. Sensory fuel metering guarantees that the mixture is directly adapted to the oxygen content of the air. Like the MS 462, this saw can be very easily pivoted and – thanks to its new bumper spikes and sprocket cover – can be guided close to tree trunks.

HIGH PERFORMANCE IN COMPACT DESIGN

The electronic fuel injection control unit continuously calculates the correct fuel supply and the ideal ignition time, and injection is performed directly into the crankcase via the injection valve. Additionally, sensors measure air pressure and internal and external temperature, and pass information on to the control unit. This can use the identified values to determine the optimum fuel quantity and ignition timing. This means that your tool offers more power from a similar weight and installation space compared to engines without injection.

EFFORTLESS START-UP

The decompression valve makes it easier to start your tool. When starting, you can allow some of the compressed mixture to escape from the cylinder by opening the valve. This protects the start-up system and reduces the amount of force required on the starter cord.

FOR OPTIMISED RUNNING CHARACTERISTICS

During work, your chainsaw uses a pressure and temperature sensor on the engine to measure the fuel. The control unit processes the values measured by the sensor so that the system adapts to the operating conditions. The optimised measurement of the fuel also achieves the best possible running behaviour.

NO NEED FOR A START POSITION

Thanks to electronic fuel injection, your chainsaw does not need a start position. In addition, the manual fuel pump is easily accessible, making the start-up process even easier.

HIGHLY POWER-EFFICIENT

With the STIHL 2-MIX engine, you can reduce exhaust emissions and fuel consumption, and therefore operating costs. This 2-stroke engine is low-maintenance and uses fuel efficiently even at high power levels. Use a mixture of petrol and engine oil as fuel. The STIHL 2-MIX engine complies with the strict EU Stage V emissions directive.

FOR MORE PLEASANT WORK

Vibrations can occur when you put your tools through their paces, and these are particularly noticeable in the grip area. The buffer and spring elements of the STIHL anti-vibration system reduce the transmission of engine vibrations to the handle area and therefore to your body. The result is that your tool is more comfortable to hold and your work is much less tiring.

FOR A FIRM GRIP ON THE TREE

The rounded arrangement of the bumper spike teeth matches the radial contours of trees. This means that your chainsaw will bite even better into the wood when cutting to length and felling.

FOR SIMPLE AND SECURE RE-TENSIONING

Side-mounted chain tensioning allows for protected, easy and quick chain tensioning and replacement. The tensioning screw is inserted laterally through the sprocket cover.

SAVES YOUR ENERGY

The optimised sprocket cover is narrower and flatter than the previous model. This improvement enables effortless delimbing and excellent chip removal. It has integrated slide rails and a guide edge, making it easier to guide the power tool along the trunk.