The Sun Joe SB600E, SB601E + SB602E electric trimmer + edger family uses the Sun Joe SharperBlade cutting system instead of traditional trimmer string.
This guide covers SharperBlade compatibility, intended uses, self-sharpening, blade life, care, and replacement for these electric models.
SharperBlade Basics + Compatibility
What Is SharperBlade?
SharperBlade is Sun Joe's patented self-sharpening trimmer blade system. The replacement blade is made from durable nylon embedded in polymer and cuts without the need for traditional trimmer string.
Which SharperBlade Fits My Electric Trimmer?
SB601RB / SB601RB-3PK
The approved SharperBlade replacement is listed for:
- SB600E
- SB601E
- SB602E
The replacement is available individually as SB601RB and as the SB601RB-3PK three-pack.
Use the SharperBlade replacement specified for your trimmer + edger. Do not substitute steel blades, wire, string, rope, or other materials.
How Does SharperBlade Self-Sharpen?
The SharperBlade is designed to wear down during use and expose a fresh cutting edge. This provides the self-sharpening action without a separate sharpening procedure.
What Can I Use SharperBlade For?
The electric SharperBlade trimmer + edger is designed for cutting grass and weeds and for trimming areas that may be difficult to reach with a conventional lawn mower.
Trimming
Use the trimmer to cut grass and weeds, including areas under bushes, on slopes, and along edges.
Hold the bottom of the trimmer head above the ground and allow only the SharperBlade to contact the cutting area. Do not force the blade into the work area.
Edging
The Twist-N-Groom rotating head converts the trimmer into an edger for working along lawn and flower-bed borders.
Mowing Hard-to-Reach Areas
The trimmer can be used for mowing in places that conventional lawn mowers cannot reach.
Keep the SharperBlade parallel to the ground and avoid pressing the trimmer head into the ground.
Scalping
The manual describes a scalping technique for removing unwanted vegetation down to the ground.
Be aware that allowing the SharperBlade to strike the ground during this technique increases blade wear.
Light Sweeping
The blade's fanning action can also be used for quick cleanup. Keep the SharperBlade parallel to and above the surface while moving the tool from side to side.
Blade Life + Care
How Long Does a SharperBlade Last?
The product information and operator's manual do not specify a fixed lifespan or number of seasons for the SharperBlade.
Blade life depends in part on how the trimmer is used, especially around hard surfaces.
How Can I Help the SharperBlade Last Longer?
Use minimal pressure when edging against concrete, brick, or stone.
The more pressure applied against a hard surface, the faster the SharperBlade will wear. For longer blade life, keep the blade just off the hard surface whenever possible.
Can the SharperBlade Break?
Yes. Do not force the SharperBlade.
The operator's manual warns that high speed combined with an impact against a hard surface can cause the blade to buckle near the center hub and tear.
Allow the SharperBlade to perform the cutting without applying unnecessary pressure.
Can I Use the SharperBlade Around Brick, Concrete + Stone?
The approved SharperBlade replacement is identified for use around brick, concrete, and stone.
Use minimal pressure around these surfaces to reduce blade wear.
Installing + Replacing the SharperBlade
What Tools Do I Need?
The installation procedure in the operator's manual does not list a separate hand tool for changing the SharperBlade.
The blade is secured using the trimmer's screw knob and washer.
How Do I Replace the SharperBlade?
-
Disconnect the Power
Switch the trimmer + edger off and disconnect the main plug before changing the blade.
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Remove the Screw Knob + Washer
Remove the screw knob and washer from the blade assembly.
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Install the SharperBlade
Position the approved SharperBlade on the electric trimmer + edger as shown in the operator's manual.
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Reinstall the Washer
Place the washer over the SharperBlade.
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Secure the Blade
Reinstall and tighten the screw knob to secure the blade assembly.
Always disconnect the trimmer from the power supply before installing, removing, inspecting, or maintaining the SharperBlade.
Where Can I Get a Replacement SharperBlade?
For the SB600E, SB601E + SB602E, use the approved SB601RB / SB601RB-3PK SharperBlade replacement.
Check Your Product Manual
For complete assembly, operation, blade replacement, maintenance, and safety instructions, visit the Shop Joe Product Manuals page and search using your complete trimmer + edger model number.
Need Help Finding the Correct Blade?
If you need help confirming the correct replacement blade for your electric trimmer + edger, contact Shop Joe Customer Support. Have your complete model number available.