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SR 450

SR 450
A powerful backpack sprayer/duster that easily converts from liquid to granular applications.

Model Features

  • 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.

    See it in action!

Specifications

WEIGHT WITHOUT LIQUID
12.8 kg (28.2 lbs.)
DISPLACEMENT
63.3 cc (3.86 cu. in.)
ENGINE POWER
2.9 kW (3.9 bhp)
FUEL CAPACITY
1700 cc (57.5 oz.)
CONTAINER CAPACITY
14.0 L (3.7 gals.)
AIR VOLUME
With Tubes: 920 m3/h (542 cfm)
AIR VELOCITY
90 m/sec. (201 mph)
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.

Important Information

Note: STIHL recommends use of fuel with no more than 10% Ethanol content. Using fuel with greater than 10% Ethanol content may cause damage to your equipment and may void your STIHL warranty. Learn More…

WARNING! Improper use of any power tool may cause serious or fatal injury. Read, understand and follow carefully the operating and safety instructions in your instruction manual before using such products.

STIHL products sold through U.S. STIHL Dealers are for distribution in the United States only.

Reviews

SR 450 is rated 4.4 out of 5 by 21.
Rated 5 out of 5 by from EXCELLENT VALUE *Heavy as other have said*Tank needs gallon- quart graduations not liter for USA sales*Will pay for itself quickly
Date published: 2017-07-13
Rated 5 out of 5 by from Bought mine a couple months ago Haven't had any issues yet, it appears heavy at first, but you have the tank on your back, so it'll lighten as the product disperses.
Date published: 2017-07-07
Rated 4 out of 5 by from Great product - except overall weight can post repetitive use issues. Wish Stihl would utilize a backpackers shoulder harness and restraint system to properly strap the unit to ones body and eliminate unit migration anytime the operator leans to one side or another, and then having to deal with sloshing liquid transfer. A proper backpackers harness would improve this unit 10fold!
Date published: 2017-07-02
Rated 5 out of 5 by from Great Performing Sprayer I purchased this sprayer to apply pest control in my yard. The SR450 is powerful enough to get high into my privacy hedges and trees. It also works great to move leave when I just need a reliable, powerful backpack blower.
Date published: 2017-06-22
Rated 5 out of 5 by from Great product Love the product and works as expected. The diffusers on the end of the wand do not attach very securely. It would be nice if they had a better locking mechanism. The price is a bit high also, but it is a good product.
Date published: 2017-06-12
Rated 5 out of 5 by from Great for diy mosquito control It's a little heavy with a full tank though does a great job with mosquito control. This sprayer will pay for itself in one season of treating your outdoor space for mosquitos.
Date published: 2017-06-03
Rated 1 out of 5 by from Sr450 backpack mister This product has a defective tank. This tank will eventually leak. When I say leak I mean like a broken pipe, extremely bad. The chemical you put in the tank will leak all over your legs and lower bank. We bought 3 of them for our company and all 3 eventually leaks.
Date published: 2017-04-30
Rated 5 out of 5 by from Had a leak problem at the chemical tank from dealer but I was able to solve it. works good after I found a weeping leak. I think the dealer had installed the low volume filter that I ordered with it. It leaked a little at the tank connection. I removed the tank and cleaned up the gasket (it wasn't noticeably dirty) but when i reassembled it, the machine worked great.
Date published: 2016-08-30
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