SR 450 - $699.95 DSRP


Zoom
Distributor Suggested Retail Price DSRP: $699.95

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

For both the distribution of liquid or solid insecticides, fertilizers, or herbicides, the low-emission, fuel-efficient STIHL SR 450 Backpack Sprayer has a larger, more powerful engine that provides a spray range 20% wider than previous models, taking 20% less time to spray the same area, depending on application. The SR 450 easily converts from misting to dusting applications without special tool...Read More
Print Spec Sheets
SR 450 Specifications
DISPLACEMENT 63.3 cc (3.86 cu. in.)
ENGINE POWER 2.9 kW (3.9 bhp)
WEIGHT 12.8 kg (28.2 lbs.)
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)
SPRAY RANGE (Maximum) Vert.: 13.0 m (43 ft.)
Horz.: 14.5 (48 ft.)
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.
Model Features
  • Zoom
    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.
  • Zoom
    Anti-Vibration System
    STIHL has a system for minimizing the vibration levels of handheld outdoor power equipment. The STIHL anti-vibration system helps reduce operator fatigue and provides a more comfortable working experience.
  • Zoom
    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!

You Will Also Need
  • Zoom
    HP Ultra 2-Cycle Engine Oil
    No matter how you slice it (or trim it or shred it), there’s no better protection for your high performance 2-stroke engine than STIHL HP Ultra. This 2-cycle engine oil has outstanding engine cleaning characteristics, plus “ultra” lubricating qualities that’s superior to other 2-cycle engine oils. This fully synthetic oil is also highly biodegradable, degrading by 80% in 21 days. We’re so confident this oil will protect your engine, we’ll double your STIHL limited warranty* when you use it. It’s that good.

    *Double your warranty when you include 6 bottles of STIHL HP Ultra Oil or 6 cans of STIHL MotoMix® Premixed Fuel with your STIHL product purchase. Double limited warranty protection applies to STIHL gasoline-powered products purchased and registered for personal non-income producing, family and household purposes only. Other restrictions apply. See dealer for details.
For Your Safety
  • Zoom
    Work Gloves
    These STIHL Work Gloves are ready to go to work for you. Made of premium goat skin leather at the palms and fingertips, they provide durability and softness for a comfortable fit. The high-visibility orange back of the gloves feature breathable knit material for improved airflow. And the knit wrist is elongated for a secure fit under a sleeve, keeping out dirt and other debris.

    Materials: Goat skin leather with knit backing
    Available sizes: One size fits most

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.
Click to view the STIHL Limited Warranty Time Periods
Rated 4.2 out of 5 by 6 reviewers.
Rated 4 out of 5 by Gets the job done We use four of these on a daily basis during mosquito season & they work as hard as we do. Its a bit heavy ( about 54lbs with 3 gal in tank ) & awkward, but you can do the same job with 3 gallons of water as you could with a skip sprayer & 15-20 gallons of water. They always run great with little maintenance, we use only the Stihl Ultra fully synthetic oil as the exhaust screens will clog if you use traditional two stroke oil. The straps are very thin, for the price they should be as nice as the straps on the BR600 blower. As of this posting you cannot buy upgraded straps. Overall its a hardworking machine that gets the job done with less water, less chemical, and in less time making us more profitable. October 14, 2013
Rated 5 out of 5 by This product is great to use. Makes money I bought this mist blower to add the service for my mosquito control business. Not only did it help the control of the mosquitos but it increased my business. Very easy to operate. A little heavy at first until the tank gets below 21/2 gallons. Love using it because every time I start the unit I know I am making money. Paid for itself in two weeks. August 23, 2013
Rated 3 out of 5 by Meh... As a company I own 6 of these. I like them for the fact that I'm a bigger guy and that they are easy to use for a first time user. They are awkward, cumbersome, and a bit on the heavy side. They do put out alot of power and get the job done right. I'm just sad STIHL stopped making the 420 model. I feel that was a better version. The 450 seems to always be having some mechanical issue. Overall it is a decent enough blower/sprayer. I just think STIHL needs to up their game for a better model. The only reason I do recomend this blower/sprayer is because I have tried other ones and this is the better of the options out there. August 20, 2013
Rated 5 out of 5 by EXCELLENT PRODUCT, EASY TO USE, MUCH MORE FLEXIBILITY After pulling over 300 feet of hose in the heat of summer with full PPE (respirator, long sleeves, long pants, heavy rubber gloves) I can only say it was a joy to use the Stihl. Yes the pack is a bit heavy when 1st loaded. After being a US Marine for 10 years, a pack s a pack. My suggestion would be perhaps dont fill so full if you can avoid it. I AM GOING TO PURCHASE A 2ND UNIT IN THE NEXT WEEK. June 17, 2013
Rated 4 out of 5 by easy to use, heavy to wear. bought the SR 450 and put it to the test right away by puting 60 gallons through it at a campground. first impression was that it was very heavy and awkward when full. The Stanley manual pump backpack sprayer that i own has more padding and a chest strap. I struggled with the shoulder straps digging into my shoulders. The power was good and the flow takes some getting used to. Easy to over apply if not careful. ready to find new straps and keep on spraying. April 28, 2013
Rated 4 out of 5 by Great Product Amazing product, Would recommened it to anyone. There are only two things I don't like. The weight of the unit when its full of chemical's, and that you can't fully shut the air flow off to the blower when not in use. March 17, 2013
1-6 of 6