Dosko 691SP-20HE Self-Propelled Stump Grinder | 20 HP Honda GX630, Hydrostatic Drive, Electric Start

SKU: 691SP-20HE
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Full Warranty Included
Made in USA
$ 10984 00
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Product Description

When stumps are the job and not just a chore, you need a grinder that pulls its own weight. The Dosko 691SP-20HE is self-propelled, so its hydrostatic drive moves the machine to the stump and around the site under its own power. You guide it, the machine does the hauling, and a 500-pound grinder suddenly handles like a push mower.

A 20 HP Honda GX630 electric-start engine spins a 14-inch cutter wheel hard enough to take stumps 24 inches above grade and 18 inches below. The 4-groove belt drive puts every bit of that power into the wheel, and the Greenteeth 700 Series teeth rotate to a fresh edge in minutes, so an all-day removal route never slows you down.

This is a machine built to earn. Rental yards keep it on the lot, tree crews run it stump to stump, and property pros bill by the job. A 20 HP grinder rents for well over a hundred dollars a day, so a few jobs cover the unit and the rest is margin. The front-mounted cutter wheel keeps the cutting action out front for better control and sight lines on every pass.

Turn the key and go. The hydrostatic drive makes loading, unloading, and repositioning effortless, and the 5-position handlebar sets a working height that keeps you comfortable through a long day on the controls.

Ideal For: Rental fleets, tree services, landscapers, and commercial property crews who grind stumps all day and need a self-propelled machine that moves itself and pays for itself fast.

Key Features

20 HP Honda GX630 Engine: Commercial electric-start power with the service network to back it, built for all-day grinding

Hydrostatic Self-Propelled Drive: Moves the 500-pound machine to the stump and around the site under its own power for easy maneuvering and loading

14-Inch Cutter Wheel: Grinds 24 inches above grade and 18 inches below for deep, complete stump removal

Greenteeth 700 Series Teeth: Eight teeth rotate in 120-degree increments for a fresh cutting edge in minutes, no tooth changes mid-job

4-Groove Belt Drive: Power band with idler-bearing tensioners delivers the full engine output to the wheel

Front-Mounted Cutter Wheel: Keeps the cutting action and sight lines out front for better control on every pass

Heavy-Duty Tires with Brake Band: 16 x 6.50-8 tires roll over rough ground and lock in place while you grind

5-Position Adjustable Handlebar: Dial in a comfortable height for long days on the controls

Electric Start: Turn-key starting for fast, repeatable starts job after job

Technical Specifications

Model / SKU 691SP-20HE
Engine Honda GX630
Displacement 688cc
Horsepower 20 HP
Fuel Type Gasoline
Operating RPM 3000
Starter Electric
Drive Direct belt drive (4-groove power band, idler-bearing tensioners)
Propulsion Hydrostatic self-propelled
Cutter Wheel 14 in. diameter x 3/8 in. thick
Cutting Capacity Above Grade 24 in.
Cutting Capacity Below Grade 18 in.
Cutter Teeth Greenteeth 700 Series (8 teeth, rotatable)
Bearings 1.375 in.
Tires 16 in. x 6.50-8 in. with adjustable brake band
Dry Weight 500 lbs.
Handlebar 5-position adjustable

What's Included

▪ Dosko 691SP-20HE Self-Propelled Stump Grinder ▪ Greenteeth 700 Series teeth (installed) ▪ Owner's Manual

Add it to your rental fleet, run it stump to stump on removal jobs, or clear your own acreage. The 691SP pays for itself in a handful of jobs, so add to cart and put it to work.

Warranty

This stump grinder is covered by a 1-year limited warranty through Dosko against defects in materials and workmanship under normal use. The Honda engine is covered separately under Honda's own engine warranty and serviced through the Honda dealer network.

Manuals & Downloads

Product Manual

Q&A

Q: Does the self-propelled drive move the machine on its own?
A: Yes. The hydrostatic drive powers the wheels, so the 500-pound machine moves to the stump and around the site under its own power. You steer, it does the hauling, including loading and unloading.

Q: How big a stump can it take?
A: The 14-inch cutter wheel grinds 24 inches above grade and 18 inches below, enough for large stumps and deep below-surface removal.

Q: Does it come with a battery?
A: No. Electric-start units ship without a battery due to shipping and battery-safety rules. A standard battery from any auto parts store installs in minutes.

Q: What engine does it run and who services it?
A: A 20 HP Honda GX630 commercial engine. Honda's nationwide dealer network services it and parts are easy to find.

Q: Is this a good machine for a rental fleet or stump-removal business?
A: Yes. The self-propelled drive, 20 HP power, and rotatable Greenteeth make it built for all-day commercial use, which is why rental yards and tree crews run it.

Q: How are the teeth maintained?
A: The Greenteeth 700 Series teeth, eight total, rotate in 120-degree increments for a fresh edge in minutes instead of replacing teeth.

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