Overview

The STIHL SR 420 Backpack Petrol Mist Blower is a high-performance, professional-grade agricultural sprayer designed for large-scale liquid application in fruit orchards, vineyards, coffee plantations, vector control, and crop protection. Driven by a powerful 56.5 cc STIHL 2-stroke engine producing 2.6 kW (3.5 hp), the SR 420 generates a massive air stream that atomizes liquid spray into a fine mist, achieving a horizontal reach of up to 12 meters and a vertical reach of up to 11.5 meters.

Built for extended daily operations, it features a large 13-liter translucent chemical tank with an integrated volume scale for quick mixing and level monitoring. The multi-function control handle houses all engine throttle and liquid metering switches in a single grip, allowing effortless single-handed operation. Equipped with padded backpack shoulder straps, STIHL ElastoStart for smooth pull-starting, an anti-vibration system, and conversion versatility (allowing it to double as a powerful leaf blower), the SR 420 delivers continuous reliability and maximum spray coverage across demanding terrain.

Key Features & Benefits

• Powerful 56.5 cc Engine: Generates 2.6 kW (3.5 hp) of consistent power, delivering a maximum air throughput of 1,260 m³/h for deep foliage penetration.

• Large 13-Liter Container: Translucent liquid container with fill level markings allows long spraying intervals without frequent refills.

• Long Spray Reach: Covers up to 12 meters horizontally and 11.5 meters vertically, ideal for tall trees and wide crop rows.

• Single-Handed Multi-Function Handle: Engine controls and liquid metering valves are conveniently integrated into the main handle grip.

• STIHL ElastoStart System: Spring-loaded starter handle absorbs compression peaks during pull-starting to protect muscles and joints.

• Anti-Vibration Rubber Buffers: Reduces engine vibration transferred to the frame, significantly lowering back and shoulder strain during long shifts.

• Versatile Dual-Function Tool: Easily converts from liquid mist blowing to a high-velocity dry blower for ground cleaning.