The STIHL SR 450 is a professional-grade sprayer that covers all the bases. Its low exhaust emission, fuel-efficient engine delivers a 20% greater spray range when compared to previous models. Ideal for distributing liquid or solid compounds, this backpack sprayer/duster converts from misting to dusting applications without any special tools or additional equipment. It’s easy to use and provides excellent control over product feed and air speed.
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SR 450 Features & Benefits

  • Anti-Vibration System - The STIHL anti-vibration system helps reduce operator fatigue and provides a more comfortable working experience.
  • Multi-Function Control Handle - Having easy access to all of the controls on one comfortable handle makes it easy to complete tasks so the operator’s hand never has to leave the handle.
  • Adjustable Support Harness - STIHL backpack blowers and sprayers are equipped with an adjustable support harness that distributes weight evenly across the shoulders and back, reducing user fatigue.

SR 450 Specs & Compare

POWER SOURCE Gas
WEIGHT 28.2 lbs.
CONTAINER CAPACITY 3.7 gal.
MAXIMUM SPRAY RANGE 48 ft.
AIR VOLUME 542 cfm
ENGINE POWER 3.9 bhp
FUEL CAPACITY 57.5 oz.
DISPLACEMENT 63.3 cc

Note: Weight displayed does not include liquid. The pressure pump kit is recommended for applications in which the spray tube is held at an upward angle of more than 30 degrees in order to maintain a consistent discharge rate.