GS 461 Rock Boss®
A powerful concrete cutter designed for deep cutting and square corners – perfect for construction and renovation projects.
When you need to cut deep into concrete, reach for the Boss – the STIHL GS 461 Rock Boss®. This revolutionary concrete cutter changes the game with enhanced performance that cuts up to 15.7” deep into concrete, reinforced concrete (with rebar up to ½ inch), cinder blocks, masonry bricks, asphalt and soft stone. And it does all of this in a compact, lightweight package that is easy to maneuver and transport.
It’s a great addition to your construction site when you need to get serious with concrete materials. And because it’s a STIHL, you know it delivers excellent performance. GS 461 Rock Boss® features include a low exhaust emission engine, HD2 heavy-duty air filter, advanced water controls, low vibration, and our exclusive Diamond Abrasive Saw Chain.
| GS 461 Rock Boss® Specifications | |
| DISPLACEMENT | 76.5 cc (4.67 cu. in.) |
| ENGINE POWER | 4.3 kW (5.8 bhp) |
| WEIGHT (powerhead only) | 7.6 kg (16.8 lbs.) |
| FUEL CAPACITY | 780 cc (26.4 oz.) |
| DIAMOND ABRASIVE CHAIN | 3/8" 36 GBM |
| GUIDE BAR LENGTHS* (Recommended ranges) | 40 cm (16") STIHL ROLLOMATIC® G |
Important Information
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.
Standard Features
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Decompression Valve
Helps reduce the effort needed to pull the starter rope. -
HD2 Filter System
Long-life heavy duty (HD2), pleated air filter and a secondary filter that are easy to get on and off. -
Rubber Bumper
Rubber bumper in the front of the engine housing helps protect the unit in the cut. -
Upright Filter Cap
Designed for upright fueling. Keeps dust out.
You Will Also Need
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Black Widow Glasses
STIHL Black Widow Glasses offer an ideal combination of protection and style. These protective glasses have a lightweight, wrap-around design that blocks out 99% of harmful UV rays. Their soft-touch temple inserts provide additional comfort and are designed to help reduce slippage. The lenses are made from optical-grade polycarbonate and are available in multiple shade color options.
Meets ANSI Z87+ Standard
Available lens colors: Indoor/Outdoor Mirror, Smoke Mirror
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Reflective Safety Vest
The Reflective Safety Vest from STIHL meets the standard for use along highways and other high-traffic areas. It features a longer tail in back for maximum reflective exposure – great for workers using backpack blowers. Two front pockets and one chest pocket provide great utility for carrying job necessities.
Meets ANSI/ISEA 107-2004 standard
Available color: High-Visibility Yellow
Available sizes: M, L, XL, XXL
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STIHL MotoMix®
STIHL MotoMix® premixed fuel is specially blended for ultimate performance. Like a sports drink for your engine, this 50:1 mixture is a combination of premium non-ethanol, high-octane motor fuel and our highest-quality STIHL HP Ultra oil. Clean and convenient, MotoMix® eliminates the hassle of mixing your own 2-stroke engine fuel while providing superior performance and lubrication. Plus, we stand behind this formulation by doubling the limited warranty when you include MotoMix® with your power tool purchase. STIHL MotoMix® contains no ethanol, allowing it to maintain stability for up to two years after the seal is broken – so it stays fresh in your equipment during long storage periods. MotoMix® is also environmentally conscious, made of non-aromatic fuel and fully synthetic, highly biodegradable engine oil. It’s no surprise that MotoMix® is the official fuel of STIHL® TIMBERSPORTS®.
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STIHL Diamond Abrasive Chain 36 GBM
The STIHL Diamond Abrasive Chain 36 GBM is the first of its kind ever offered by STIHL. This chain features a pre-sharpened diamond segment on each link, making it immediately ready for cutting concrete and stone. It’s designed to deliver high cutting speed, smooth cuts and good performance during plunge cuts. The diamond segments reduce vibration, improving overall cutting speed. A depth gauge between each diamond segment improves chain ruggedness and plunge cut performance. The chain also features a “sandwich” segment design for faster cutting and longer service life. Expected service life is approximately 40-80 linear feet of cutting in 6-inch thick concrete (chain life will vary greatly depending on aggregates and steel reinforcement).
Applications: This chain is to be used exclusively with the GS 461 STIHL Rock Boss® concrete cutter and the STIHL ROLLOMATIC® G guide bar. The chain is designed to cut concrete, reinforced concrete (with rebar up to ½ inch), cinder blocks and masonry (including bricks, asphalt and soft stone such as sandstone). Cutting hard stone such as granite and ductile iron pipe are also approved applications but will reduce the service life of the chain.
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STIHL ROLLOMATIC® G Guide Bar
Based on STIHL’s many years of experience designing guide bars and chains, the STIHL ROLLOMATIC® G is a 16-inch guide bar that is designed for the professional application of concrete and stone cutting. The bar requires no bar oil – it uses water and features internal water channels that are directed toward the cutting area. This delivers optimal cooling and debris flushing of the chain and sprocket nose. The bar also features an additional tensioning hole to further increase chain tensioner travel. The expected service life of the STIHL ROLLOMATIC® G guide bar is equal to the service life to 2-3 STIHL Diamond Abrasive 36 GBM chains.
Applications: This guide bar is to be used exclusively with the GS 461 STIHL Rock Boss® concrete cutter and the STIHL Diamond Abrasive Chain 36 GBM; this guide bar is NOT to be used with any other STIHL products, including chain saws. The bar is designed to cut concrete, reinforced concrete (with rebar up to ½ inch), cinder blocks and masonry (including bricks, asphalt and soft stone such as sandstone).
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For Your Safety
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Pro Mark™ Apron Chaps - 9 layer
For heavyweight protection that won’t weigh you down, choose Pro Mark™ Apron Chaps from STIHL. They’re rugged, yet comfortable to wear and easily fit over your work clothes. Sewn into the legs of the chaps are nine layers of Engtex®, a cut-retardant material designed to reduce the risk or severity of injury to the body parts covered by the pads in the event of contact with the rotating saw chain of a gasoline-powered chain saw. The open-back design of these chaps makes them a great choice for hot working conditions. These Pro Mark™ apron chaps provide three additional layers of Engtex® than our standard apron chaps. STIHL chain saw protective apparel is also wash and wear, unlike some other brands that require dry cleaning or light surface cleaning.
The STIHL Pro Mark™ designation identifies products for professional users.
Available color: High Visibility Orange
Available lengths: 32", 36", 40"
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Cut-Retardant Mitts
Get a grip on your chain saw with STIHL Cut-Retardant Mitts. Made with water-resistant nylon backs and goatskin palms, these mitts offer exceptional comfort and grip without sacrificing dexterity. Engtex®, a cut-retardant material, is sewn into the back of the left glove. These mitt-style gloves also feature a separate index finger for chain saw throttle operation, while hook and loop wrist straps make fitting a breeze. These chain saw protective gloves are an excellent choice for the professional logger. STIHL chain saw protective apparel is also wash and wear, unlike some other brands that require dry cleaning or light surface cleaning.
Available color: High Visibility Orange
Available sizes: S (8), M (9), L (10), XL (11)
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STIHL Forestry Boots
Your work can take you to some of the toughest terrain. STIHL Forestry Boots are lined with two layers of cut-retardant Kevlar®, helping protect you from falling objects and hazards underfoot that can cause punctures. The boots are also flexible and water-resistant thanks to a leather upper construction. Foam padding from the heel to the wide steel toe enhances comfort while its Vibram® soles provide excellent abrasion resistance.
Meets OSHA Reg. 1910.266
Available sizes: 6-13 (in half-size increments), 14
NOTE: Women should order two sizes smaller than their normal shoe size.
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STIHL® Forestry Helmet System
The woods can hold many dangers. Stay one step ahead with the Forestry Helmet System from STIHL. The protection starts with a hard shell of ABS thermoplastic. It gets even better with a six-point, ratchet-style suspension system that absorbs shock and keeps the helmet stable while you work.
The system also features a Cool Guard sweatband to keep perspiration out of your eyes, as well as a built-in rain gutter to direct rain away from your face during inclement weather. Adjustable hearing protectors comfortably reduce noise while an epoxy-coated steel full-face screen helps protect from flying debris.
Hard hat meets ANSI Z89.1-2003 Type 1 Class G & C. Hearing protectors meet ANSI S3.19-1974 and have a Noise Reduction Rating (NRR) of 24 dB(A).
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Product Instruction Manual (PDF)
STIHL Limited Warranty
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