

The Stihl 090 G was a large, heavy-duty chainsaw with a 137 cc engine producing around 8.5 to 13 horsepower. Key specs include a weight of about 30.6 lbs, a 404 pitch chain, and the ability to use guide bars up to 60 inches long. It was produced from 1969 to 1985 and features older controls, including a throttle lock, but lacks a chain brake and anti-vibration system.
Engine displacement: 137 cc 8.36 cu. Horsepower: Approximately 8.5-13 hp. Max engine RPM: 6,500-7,000 RPM (8,000 RPM free). Engine construction: Single cylinder with a 66mm bore and 40mm stroke. Fuel mix: 20:1 ratio (after break-in). Weight: Approximately 30.6 lbs (13.9 kg). Guide bar: Can use bars from 21 to 60 inches. Oiling: Automatic oiler with a manual assist. Throttle: Features a throttle lock for continuous operation. Air filter: Nylon mesh element. Spark plug: Bosch WKA 225 T 6 with a 0.51mm gap. Bearings: Needle roller crankshaft main bearings. Controls: Includes a kill switch, choke, and idle adjustments. Chain brake: Does not have a chain brake. Anti-vibration system: Lacks an anti-vibration system, making it less comfortable for extended use. Safety features: Does not have a chain brake or AV system.