Dosko Stump Grinder (691SP-20HE)
Dosko Stump Grinder (691SP-20HE)
Self-Propelled • Honda GX630 Power • Greenteeth 700 Series Cutter Teeth
The Dosko 691SP-20HE is a heavy-duty, self-propelled stump grinder built for powerful cutting performance, operator control, and long-term durability. Powered by a dependable Honda GX630 688cc engine, this machine is designed for serious stump removal in commercial, rental, and demanding property maintenance applications.
Its hydrostatic self-propelled drive system makes it easier to maneuver, while the front-mounted cutter wheel helps maximize operator safety during grinding. With a 5-position handlebar, electric start, and a durable 14-inch cutter wheel, the 691SP-20HE is designed to deliver aggressive cutting performance with better control and operator comfort.
Equipped with Greenteeth® 700 Series teeth, this stump grinder uses a 3-in-1 tooth system with a concave cutting edge that shears rather than shreds. Each tooth can be rotated in three 120-degree increments to provide fresh cutting edges and longer service life.
Note: Due to shipping restrictions and battery safety requirements, electric start units are not sold with a battery.
Key Features & Benefits
-
Honda GX630 Engine
Commercial-grade 688cc Honda engine delivers dependable power and long service life. -
Hydrostatic Self-Propelled Drive
Makes the machine easier to move and maneuver during operation. -
Front-Mounted Cutter Wheel
Designed to help maximize operator safety while grinding. -
Electric Start
Convenient electric starting system for easier operation.
Battery required, not included. -
Greenteeth® 700 Series Teeth
8-tooth cutting system designed for aggressive cutting and longer usable life. -
3-in-1 Tooth System
Teeth can be rotated in three 120-degree increments for fresh cutting edges. -
14" Cutter Wheel
Heavy-duty cutter wheel measures 14" diameter x 3/8" thick. -
Cuts 24" Above and 18" Below Grade
Strong stump removal capability for tough, real-world jobs. -
Direct Belt Drive System
Durable drive setup uses a 4-groove power band with idler bearing belt tensioners. -
1.375" Diameter Bearings
Heavy-duty bearings built for strength and durability. -
5-Position Handlebar
Helps improve operator comfort and control during grinding. -
Unique Side Discharge Frame
Designed for practical chip discharge and efficient stump grinding operation. -
All-Terrain Tires
Helps keep the unit stable and on track over varied jobsite surfaces. -
Optional Safety Barricade


Quick Specs
| Specification | Details |
|---|---|
| Model | 691SP-20HE |
| Equipment Type | Self-Propelled Stump Grinder |
| Engine Brand | Honda |
| Engine Model | GX630 |
| Displacement | 688cc |
| Fuel Type | Gasoline |
| Starter | Electric |
| Battery Required | Yes – 12V lawn tractor size battery (Group U1) |
| Battery Included | No |
| Drive System | Hydrostatic / Direct Belt Drive |
| Belt Drive | 4-Groove Power Band with Idler Bearing Belt Tensioners |
| Bearings | 1.375 in. Diameter |
| Cutter Wheel | 14 in. Dia. x 3/8 in. Thick |
| Cutting Capacity | 24 in. Above Grade / 18 in. Below Grade |
| Teeth | Greenteeth® 700 Series Teeth (8) |
| Tires | 16 in. x 6.50-8 in. Adjustable Brake Band |
| RPM | 3000 |
| Dry Weight | 500 lbs. |
| Warranty | 2-Year Limited Consumer / Commercial |
What’s Included
- Dosko 691SP-20HE Stump Grinder
-
Dosko 691SP-20 Manual
Ideal For
- Commercial stump grinding
- Rental fleet use
- Landscapers and contractors
- Property maintenance crews
- Heavy-duty stump removal jobs

















Description
Dosko Stump Grinder (691SP-20HE)
Self-Propelled • Honda GX630 Power • Greenteeth 700 Series Cutter Teeth
The Dosko 691SP-20HE is a heavy-duty, self-propelled stump grinder built for powerful cutting performance, operator control, and long-term durability. Powered by a dependable Honda GX630 688cc engine, this machine is designed for serious stump removal in commercial, rental, and demanding property maintenance applications.
Its hydrostatic self-propelled drive system makes it easier to maneuver, while the front-mounted cutter wheel helps maximize operator safety during grinding. With a 5-position handlebar, electric start, and a durable 14-inch cutter wheel, the 691SP-20HE is designed to deliver aggressive cutting performance with better control and operator comfort.
Equipped with Greenteeth® 700 Series teeth, this stump grinder uses a 3-in-1 tooth system with a concave cutting edge that shears rather than shreds. Each tooth can be rotated in three 120-degree increments to provide fresh cutting edges and longer service life.
Note: Due to shipping restrictions and battery safety requirements, electric start units are not sold with a battery.
Key Features & Benefits
-
Honda GX630 Engine
Commercial-grade 688cc Honda engine delivers dependable power and long service life. -
Hydrostatic Self-Propelled Drive
Makes the machine easier to move and maneuver during operation. -
Front-Mounted Cutter Wheel
Designed to help maximize operator safety while grinding. -
Electric Start
Convenient electric starting system for easier operation.
Battery required, not included. -
Greenteeth® 700 Series Teeth
8-tooth cutting system designed for aggressive cutting and longer usable life. -
3-in-1 Tooth System
Teeth can be rotated in three 120-degree increments for fresh cutting edges. -
14" Cutter Wheel
Heavy-duty cutter wheel measures 14" diameter x 3/8" thick. -
Cuts 24" Above and 18" Below Grade
Strong stump removal capability for tough, real-world jobs. -
Direct Belt Drive System
Durable drive setup uses a 4-groove power band with idler bearing belt tensioners. -
1.375" Diameter Bearings
Heavy-duty bearings built for strength and durability. -
5-Position Handlebar
Helps improve operator comfort and control during grinding. -
Unique Side Discharge Frame
Designed for practical chip discharge and efficient stump grinding operation. -
All-Terrain Tires
Helps keep the unit stable and on track over varied jobsite surfaces. -
Optional Safety Barricade


Quick Specs
| Specification | Details |
|---|---|
| Model | 691SP-20HE |
| Equipment Type | Self-Propelled Stump Grinder |
| Engine Brand | Honda |
| Engine Model | GX630 |
| Displacement | 688cc |
| Fuel Type | Gasoline |
| Starter | Electric |
| Battery Required | Yes – 12V lawn tractor size battery (Group U1) |
| Battery Included | No |
| Drive System | Hydrostatic / Direct Belt Drive |
| Belt Drive | 4-Groove Power Band with Idler Bearing Belt Tensioners |
| Bearings | 1.375 in. Diameter |
| Cutter Wheel | 14 in. Dia. x 3/8 in. Thick |
| Cutting Capacity | 24 in. Above Grade / 18 in. Below Grade |
| Teeth | Greenteeth® 700 Series Teeth (8) |
| Tires | 16 in. x 6.50-8 in. Adjustable Brake Band |
| RPM | 3000 |
| Dry Weight | 500 lbs. |
| Warranty | 2-Year Limited Consumer / Commercial |
What’s Included
- Dosko 691SP-20HE Stump Grinder
-
Dosko 691SP-20 Manual
Ideal For
- Commercial stump grinding
- Rental fleet use
- Landscapers and contractors
- Property maintenance crews
- Heavy-duty stump removal jobs





















