Dosko Stump Grinder (691SP-20HE)
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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
NOTE: Most products require at least some assembly.
Shipping Disclaimer
Due to rising fuel costs, limited freight capacity, and delivery restrictions in certain areas, some shipments may be subject to an additional remote area, out-of-area or limited-access delivery fee. If additional shipping charges are required to complete your order, we will contact you after the order is placed and provide available options including possible terminal pick up. (Read more about our shipping policy and how freight shipping works.)
CALIFORNIA PROPOSITION 65 WARNING
Some (not all) of the products we carry can potentially expose you to chemicals including Benzene and Carbon Monoxide, which are known to the State of California to cause cancer and birth defects or other reproductive harms. If you have any questions you can always contact us.
Upon receiving the unit, I had several minor issues including small metal balls in the gas tank, extra weld material preventing clevis pin insertion for handle installation, and several nuts missing washers.
The most concerning was a metal piece falling off of the clutch assembly before 10 hours of use. The metal piece extended through a hole in the belt cover facing the operator, and developed a vibration against the cover due to improper alignment. This vibration was short lived until it broke the metal piece off of the assembly.
The balance of the machine is great, drive wheels work well, and engine runs great. The build quality is not in line with the purchase price, though. Some of the controls, including the pull switch to allow the engine to run, are made of cheap and thin plastic and seem fragile.
Very easy to work with, product came very fast, would buy from again!
Thank you for your kind words about our Dosko Stump Grinder! We appreciate your business and look forward to serving you again in the future.
Thanks, WSD
Got Exactly what we ordered within a few weeks. Machine runs great.
Great to hear! Thanks for talking the time to leave a review. Happy grinding!
WSD
Overall, I'm very pleased with the unit. It is clearly a very high quality unit. Final Assembly after I received was straightforward with the instructions provided. I was able to use the machine once before snow and it performs exceptionally. I would have rated it 5 stars but I was contacted by Northern Tool and informed that it requires service due to concerns with improper assembly. They sent the instructions and it looks to be straightforward although I had to buy a tool I didn't have to comply with the instructions. This was disappointing but I'm thankful they notified me so I can take care of it before anything breaks.
I wanted to know what length of trailer I need to haul the Dosko Stump Grinder 691SP (691SP-20HE) ?
Hello, these are the dimensions of the machine: 85" L x 30" W x 56" H. 7 foot trailer should be adequate.
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