Dosko Stump Grinder (691SP-20HE)

Regular price $9,599.99
Regular price -22% $12,299.99 Sale price $9,599.99

Call a log splitter expert at (888) 706-2434 or send us an email. Alternatively, you can chat with us.

Product Description

Flat Rate Shipping - No Sales Tax (Most States) 

The Dosko 691SP-20HE is self propelled by a hydrostatic drive system. All Dosko stump grinders are designed with safety in mind. Our front-mounted cutter wheel provides maximum operator safety at all times. The five-position handlebar adjustment gives the operator a comfortable working position and at the same time complete control of the machine while grinding.

This unit is powered by a proven Honda GX630 689cc commercial engine backed a 3 year warranty.  Check out the optional Safety Barricade.

  • Honda GX630 689cc
  • Electric start
  • Oil shutdown sensor
  • Electromagnetic Clutch
  • 1.375" diameter bearings
  • Unique side discharge frame
  • Comfortable to use
  • Handlebar has five different positions
  • 3-in-1 tooth system

Greenteeth® 700 series teeth Features concave "dish" cutting edge that sheers rather than shreds Teeth can be rotated in three 120° increments for fresh cutting edge.

Dosko 691SP-20 Manual

**Optional Rush Processing - We are pleased to offer RUSH PROCESSING for in stock items. Your equipment order is guaranteed to ship from our warehouse as fast as SAME DAY or by next business day (excluding Holidays).   Tracking information will be e-mailed as soon as your order is processed. You will have the ability to track your order all the way through final delivery.  If we don't get it shipped out by next business day its simple, you don't get charged the rush processing fee.

Please note these stump grinders are delivered via freight truck. You will be responsible to take the crate off the back of the truck unless you select lift gate delivery as an option. We are here to help. If you have any questions at all please don't hesitate to give us a call.

Detailed Specifications

Honda GX630 689cc
Fuel Tank Size:
3.2 GAL
Low Oil Shut Down:
Starting Type:
Electric Start
85"L x 30"W x 56"H
500 lbs
16-650 x 8"
RPM Operating:
3600 RPMS
Cutting Capacity (AG):
Above Grade 24 Inches
Cutting Capacity (BG):
Below Grade 18 Inches
Stump Diameter:
No Limit
2 Year consumer / 1 Year commercial

Shipping Disclaimer

Due to rising fuel costs and lack of space on shipping trucks the costs in certain areas have been affected. An "out of area" fee may be necessary. If additional funds are required to fulfill your order we will reach out to you after your order is placed and give you options including possible terminal pick up. (Read more about our shipping policy and how freight shipping works.)


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.

Customer Reviews

Based on 3 reviews
Kaleb K. (Cleveland, US)
Build Quality Issues

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.

Jeremy S. (Phoenix, US)
Prompt Delivery/Excellent

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!


Steve L. (Manassas, US)
Dosko 691SP-HE20 Stump Grinder

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.