Meet the AJ805E
Key Components
Upper handle frame — main grip and control handle
Handle knobs + bolts — secure the upper, middle, and lower handle sections
Middle handle bars — connect the upper and lower handle assembly
Lower handle bars — attach to the adjusting gear wheels on the body
Ejector flap — covers the rear discharge opening and collection bag area
Scarifying cylinder — pre-assembled cylinder with slicing blades
Dethatcher cylinder — spring tine cylinder for raking and thatch removal
Hex key wrench — used when changing the cutting cylinder
Depth adjustment lever — changes the raking or scarifying depth
Thatch collection bag — collects removed thatch and debris
Extension cord restraint holder — helps secure the extension cord during use
Safety lock button + switch lever — required to start the unit
Technical Specifications
| Specification | AJ805E |
|---|---|
| Product Type | Electric lawn scarifier + dethatcher |
| Rated Voltage | 120V ~ 60 Hz |
| Motor | 13 amp |
| No Load Speed | 3000 rpm |
| Maximum Raking Width | 15 in. / 38 cm |
| Scarifying Depth | -0.4 in. to 0 in. / -10 mm to 0 mm |
| Raking Depth | 0 in. to 0.4 in. / 0 mm to 10 mm |
| Depth Adjustment | 5 positions |
| Thatch Bag Capacity | 13.2 gal / 50 L |
| Dethatcher Cylinder | 24 spring steel raking tines, 1.5 mm thick and 1.2 in. / 30 mm long |
| Scarifier Cylinder | 26 slicing blades, 5.1 in. / 130 mm long |
| Wheel Size | 8 in. front wheels / 4 in. rear wheels |
| Product Dimensions | 34.4 in. x 24.2 in. x 46 in. |
| Net Weight | 23.4 lbs / 10.6 kg |
| Warranty | 2 Year Warranty |
What's in the Box
| Included Item | AJ805E |
|---|---|
| Scarifier + dethatcher body | ✔ |
| Handle knobs | ✔ 6 |
| Bolts | ✔ 4 |
| Adjusting gear wheels | ✔ 2 |
| Upper handle frame | ✔ |
| Middle handle bars | ✔ 2 |
| Lower handle bars | ✔ 2 |
| Thatch collection bag | ✔ |
| Cable clip | ✔ |
| Hex key wrench | ✔ |
| Scarifying cylinder | ✔ pre-assembled |
| Dethatcher cylinder | ✔ |
| Operator's manual | ✔ |
Assembly
Getting Started
-
Inspect the lawn first
Remove stones, sticks, wire, bones, and other objects that could be thrown or damage the unit.
-
Attach the thatch collection bag
Lift the ejector flap and hang the collection bag on the mounting hooks before operation.
-
Set the cutting depth
Pull the depth adjustment lever away from the wheel, then move it forward or backward to select one of the five depth settings.
-
Connect the power cord
Use the extension cord restraint holder and plug the appliance cord into a proper outdoor extension cord.
-
Start the unit
Press and hold the safety lock button, then pull the switch lever toward you. Release the safety lock button once the unit starts.
-
Work in overlapping rows
Push the machine forward slowly in straight, slightly overlapping rows for even coverage.
-
Stop the unit
Release the switch lever and wait for the cylinder to stop completely before lifting, tilting, or servicing the unit.
| Depth Setting | Use |
|---|---|
| 10 mm | For pushing the machine and removing thin thatch layers. Do not use for scarifying. |
| 5 mm | For raking healthy lawn. Do not use for scarifying. |
| 0 mm | For transport, storage, scarifying, and raking. |
| -5 mm | For scarifying. Not recommended for raking. |
| -10 mm | For scarifying only. Do not use for raking. |
Maintenance & Care
Keep fasteners tight
Check nuts, bolts, knobs, and screws regularly so the unit remains in safe working condition.
Clean the cylinder area after each use
Grass clippings can accumulate around the cylinder and cause overheating. Remove clippings after every use.
Keep air vents clear
Blocked vents can reduce performance and cause overheating. Clean vents with a soft brush when needed.
Inspect the collection bag
Check the thatch collection bag for wear or deterioration before use. Let it dry fully before storing.
Clean with a brush or cloth only
Do not use water, solvents, or polishes to clean the machine.
Store in a dry place
Allow the unit to cool before storage. Do not place other objects on top of the unit while stored.
Troubleshooting Guide
Only perform the steps described below. If the issue cannot be resolved, contact an authorized service center or Shop Joe customer support.
Possible Causes
- Unit is not connected to power
- Power cord or plug is defective
- Other electrical defect
- Safety lock button was not pressed
- Machine overheated
Solutions
- Connect the unit to a power supply
- Press the safety lock button first, then pull the switch lever
- Clean grass clippings around the cylinder
- Allow the machine to cool before restarting
- Contact an authorized service agent for cord, plug, or electrical defects
Possible Cause
- Wrong extension cord is being used
Solution
- Use a 14-gauge 50-foot extension cord
- For 50–100 feet, use a 12-gauge extension cord
Possible Causes
- Extension cord is not suitable for this product
- Air vents are blocked
Solutions
- Use a proper outdoor extension cord
- Clean the air vents with a soft brush
Possible Causes
- Cutting device is worn
- Scarified material exceeds machine capacity
- Scarifying depth is incorrect
Solutions
- Replace the tine cylinder if worn
- Only scarify material within the machine’s capacity
- Adjust the depth setting
Possible Cause
- Machine is clogged
Solution
- Unplug the unit
- Remove dead grass from the tines
- Confirm there are no clogs preventing normal operation
Possible Causes
- Cutting device is unbalanced
- Cutting device has been damaged by impact
Solutions
- Switch off and unplug the unit immediately
- Inspect the cutting device for damage
- Replace or have the cutting device repaired before reuse
Video Guide
Frequently Asked Questions
What is the difference between scarifying and dethatching?
How often should I dethatch or rake my lawn?
When is the best time to scarify?
Can I use the AJ805E on wet grass?
Is the AJ805E for commercial use?
What replacement accessories are available?
Compatible optional accessories listed for this model include:
- AJ805E-DTNS — replacement dethatcher tines
- AJ805E-SCRF — replacement scarifier blade
- PJEXT50-B — Snow Joe® + Sun Joe® SJTW-A 14-gauge 50-foot extension cord with lighted end