Description

Overview
The STIHL SG 20 is a professional-grade manual backpack sprayer engineered for landscaping experts and homeowners who require surgical precision and consistent flow. Unlike standard pump sprayers that lose pressure as the tank empties, the SG 20 features a specialized pressurized fluid reservoir that is separate from the main 4.75-gallon (18-liter) tank. This innovative design allows the operator to maintain a constant working pressure of 40 psi, even while refilling the main container. Lightweight and built with high-impact polymers, the SG 20 is the ideal choice for the targeted application of herbicides, pesticides, and fertilizers in large gardens or commercial landscapes.
Comfort and durability are the hallmarks of this manual unit. It is equipped with an adjustable, padded support harness that distributes weight evenly across the shoulders and back, significantly reducing physical strain during long-duration spraying. The sprayer utilizes a fabric-reinforced pressure hose and a fiber-reinforced spray lance for maximum chemical resistance and longevity. With its internal pump located inside the tank to prevent leaks onto the operator and a large filler opening for spill-free mixing, the STIHL SG 20 is a high-efficiency, low-maintenance tool built to provide professional-grade results on every pass.

Top Performance Features

Separate Pressurized Reservoir: Maintains a consistent 40 psi of working pressure, ensuring a uniform spray pattern from the first gallon to the last, even during tank refills.

4.75-Gallon (18L) High-Capacity Tank: A large, translucent polymer container that reduces the frequency of refills and allows for easy liquid level monitoring.

Ergonomic Support Harness: Features wide, adjustable shoulder straps designed to minimize fatigue by centering the weight of the liquid on the user’s hips and back.

Internal Pump Design: The manual pump mechanism is housed inside the tank, offering an extra layer of protection against accidental leaks or chemical contact with the operator.

Fiber-Reinforced Spray Lance: A lightweight yet rugged wand designed to resist corrosion from harsh agricultural chemicals and withstand accidental impacts.

Fabric-Reinforced Pressure Hose: Engineered for high-pressure durability and flexibility, preventing kinks and ensuring a steady flow of liquid to the nozzle.

Large Tank Opening: A wide-mouth filler neck makes it easy to add concentrates and water without the need for a funnel, reducing the risk of environmental contamination.

Left-Side Pump Lever: Positioned for natural, ergonomic pumping action that allows the operator to maintain pressure while moving through dense vegetation.

Core Specifications

Model Number: SG 20

Power Source: Manual Pump

Tank Capacity: 4.75 Gallons (18.0 Liters)

Working Pressure: 40 psi (+/- 10%)

Weight (Dry): ~11.2 lbs

Hose Length: Professional Reinforced Grade

Wand Material: Fiber-Reinforced Polymer

Seals: Chemical-Resistant Elastomers

The Definitive Choice for Precision Chemical Application
The STIHL SG 20 Manual Backpack Sprayer is the ultimate workhorse for those who view property care as a high-accuracy task. By merging a separate pressure-stabilizing reservoir with a high-capacity, lightweight tank and an ergonomic harness, STIHL has created a machine that excels in both control and comfort. It is a rugged, highly efficient, and exceptionally reliable tool built to provide professional-grade coverage and a lifetime of service for your garden, farm, or landscaping business.