Dosko 620-20HE Walk-Behind Stump Grinder | 20 HP Honda GX630, Electric Start
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Product Description
The Dosko 620-20HE puts serious 20 HP power in a walk-behind frame, so you get commercial grinding force without the cost or bulk of a self-propelled machine. It is the grinder for the operator who wants to drop big stumps fast and keep the setup simple.
A Honda GX630 electric-start engine, 688cc, drives a 14-inch cutter wheel through a 4-groove belt system, taking stumps 20 inches above grade and 16 inches below. The Greenteeth 700 Series teeth rotate to a fresh edge in minutes, so a full day of stumps never wears down your pace.
This grinder earns its place on a job site or a rental lot. Renting a 20 HP grinder runs well over a hundred dollars a day, and the pro crews charge by the stump. Own this one and a couple of jobs cover it, then it keeps making money load after load.
Turn the key, set the 5-position handlebar where you want it, and grind. The oil-alert shutdown protects the engine, and the heavy frame soaks up the vibration of back-to-back stumps without flexing.
Ideal For: Tree crews, landscapers, rental fleets, and large-acreage owners who want 20 HP grinding power in a straightforward walk-behind machine.
Key Features
▪ 20 HP Honda GX630 Engine: Big commercial electric-start power for fast, aggressive grinding through large stumps
▪ 14-Inch Cutter Wheel: Grinds 20 inches above grade and 16 inches below for complete stump removal
▪ Greenteeth 700 Series Teeth: Eight teeth rotate in 120-degree increments for a fresh cutting edge in minutes
▪ 4-Groove Belt Drive: Power band with idler-bearing tensioners puts the full 20 HP into the wheel
▪ Walk-Behind Simplicity: Commercial power without the cost or bulk of a self-propelled machine
▪ Oil-Alert Shutdown: Protects the engine from low oil for fewer breakdowns on the job
▪ All-Terrain Tires with Brake Band: 4.80/4.00-8 tires roll over rough ground and lock in place while you work
▪ 5-Position Adjustable Handlebar: Set a comfortable working height for long grinding days
▪ Electric Start: Turn-key starting, job after job
Technical Specifications
| Model / SKU | 620-20HE |
| Engine | Honda GX630 |
| Displacement | 688cc |
| Horsepower | 20 HP |
| Fuel Type | Gasoline |
| Operating RPM | 2500 |
| Starter | Electric |
| Drive | Direct belt drive (4-groove power band, idler-bearing tensioners) |
| Cutter Wheel | 14 in. diameter x 3/8 in. thick |
| Cutting Capacity Above Grade | 20 in. |
| Cutting Capacity Below Grade | 16 in. |
| Cutter Teeth | Greenteeth 700 Series (8 teeth, rotatable) |
| Bearings | 1.375 in. |
| Tires | 4.80/4.00-8 in. with adjustable brake band |
| Low-Oil Shutdown | Yes |
| Dry Weight | 400 lbs. |
| Handlebar | 5-position adjustable |
| Optional | Tow bar package |
What's Included
▪ Dosko 620-20HE Walk-Behind Stump Grinder ▪ Greenteeth 700 Series teeth (installed) ▪ Owner's Manual
Run it on removal jobs, rent it out, or clear your own land. The 620 pays for itself in a couple of jobs, so add to cart and get grinding.