The STIHL MS 500i R is a revolutionary milestone in forestry equipment, featuring a wrap-handle design and the world’s first electronically controlled fuel injection. Specifically engineered for forestry personnel and tree service professionals, the "R" version allows the saw to be used in multiple positions for felling, bucking, and delimbing with the operator's hands always in the proper ergonomic position.
Driven by a high-performance 79.2 cc engine delivering a massive 6.7 bhp, the MS 500i R provides unparalleled acceleration and uncompromising power. With no carburetor to adjust, the sensor-controlled fuel metering automatically provides the perfect amount of fuel for any work environment. This saw combines leading-edge innovation with world-class engineering to maximize jobsite productivity while minimizing user fatigue.
Key Features & Benefits
Revolutionary Fuel Injection & Handling
- Electronic Fuel Injection: The first of its kind, providing rapid acceleration and optimal power across varying altitudes and temperatures without manual adjustments.
- MS-Wrap Handle (R): Enables the saw to be used comfortably in multiple orientations, providing superior maneuverability for professional felling and limbing.
- Sensor-Controlled Fuel Metering: Automatically delivers the precise amount of fuel needed for peak performance in every cut.
Advanced Professional Engineering
- HD2 Air Filter: A washable, long-life filter with a large surface area that maintains high performance even in dusty, dry conditions.
- Extended Chip Deflector: Specially designed sprocket cover routes chips, dust, and debris downward and away from the operator.
- High Power-to-Weight Ratio: Delivers heavy-duty 6.7 bhp performance while maintaining an ergonomic profile to help pros get more done with less fatigue.
Efficient Maintenance & Safety
- Captive Bar Nuts: Held securely in the lightweight sprocket cover, ensuring you never lose your hardware during field maintenance.
- MDG 1 Diagnostic Support: Compatible with new-generation diagnostic software to help dealers quickly identify service needs and minimize downtime.
- Decompression Valve & ElastoStart: These features work together to significantly reduce the effort required to pull the starter rope.
- Anti-Vibration System: Minimizes handle vibration to provide a more comfortable working experience during long professional shifts.
Technical Specifications
| Intended Use | Professional / Forestry |
| Displacement | 79.2 cc |
| Engine Power | 6.7 bhp |
| Powerhead Weight | 14.8 lbs. |
| Fuel Capacity | 26.5 oz. |
| Chain Oil Capacity | 11.0 oz. |
| Recommended Bar Length | 25 in. |
| Chain Type | 3/8" RS3 |