BLADE PRO LAWN MOWER
BLADE SHARPENER
User’s Manual
INTRODUCTION
Thank you for your purchase of our Blade Pro Sharpener. This Manual has been specifically designed
to help you in installing, using and maintaining your Blade Pro Sharpener safely and correctly. Please
read the entire manual before you begin installation and use.
GENERAL SAFETY GUIDE
Working with blades and grinders presents several safety hazards. Strictly follow the instructions
below for your own safety.
A. It is your responsibility to make sure that all safety measures are taken during the installation and
use of this product.
B. Always use the required tools during installation of this product.
C. Make sure that your grinder is turned off and unplugged during installation.
D. Always wear the proper safety equipment such as goggles and ear plugs when using this product.
E. Keep out of reach of children and other people who are not qualified to use this product.
F. Read this manual in its entirety before installation and use of this product.
INSTALLING THE SHARPENER
We have designed the Blade Pro Sharpener so that it can be mounted in different congurations depending
on your need and work area. It can be mounted:
A. Using the Angle Bracket included with the product.
B. Using a vise attached to the Angle Bracket or directly to your work area.
C. Horizontally on a tabletop.
D. Vertically on the side of a table.
E. On a work trailer for offsite use with a cordless grinder.
ANGLE BRACKET
PREPARING THE GRINDER
REMINDER: Make sure your grinder is turned off and unplugged.
A. Take the Guide Rod included with this product.
B. Screw in the threaded end of the Guide Rod into the handle attachment hole of your grinder. This is
the threaded hole located on the right side of your grinder.
C. Screw it in as far as it can go.
D. Tighten the lock nut of the Guide Rod until it is snug to secure it on to the grinder.
WARNING: Do not overtighten the lock nut and do not use pliers to turn the Guide Rod to
avoid any damage.
ANGLE BRACKET
VISE
LOCK NUT
GUIDE ROD
SHARPENING YOUR LAWN MOWER BLADE
REMINDER: Make sure that your blade is completely clean and dry before sharpening.
A. Attaching the Blade to the Sharpener Clamp
1. Unscrew the vise handle to open the vise wide enough to allow the blade’s width to fit.
2. Center the blade between the two sets of 2 clamps. Ideally the center hole of your blade should
be centered between the 4 clamps. The blade must be properly aligned with the vise frame.
3. Tighten the vise handle to secure the blade in place.
VISE HANDLE
B. Attaching Small Blades to the Sharpener Clamp
The vise can be turned around to be able to fit blades of smaller width.
1. Unscrew the vise handle until it is fully detached from the clamp.
2. Remove the outer half of the vise by sliding it out of the assembly.
3. Turn it so that the opposite side will be facing the assembly.
4. Re-attach it to the assembly.
5. Screw back the Vise Handle.
WARNING: Do not overtighten the vise to avoid damaging the blade.
Unscrew and remove
Vise Handle
Remove Vise
C. Attaching the Grinder to the Guide Arm
REMINDER: Make sure your grinder is turned off and unplugged.
1. Take the grinder with the attached Guide Rod.
2. Insert the smooth end of the Guide Rod through the pivot hole of the Guide Arm.
3. Slide the Guide Rod all the way in. The grinder should be parallel to the Guide Arm and pointing
in the same direction.
NOTE: If the grinder has a guard, it may be necessary to adjust the position so that it does not obstruct
the movement of the Guide Arm and the grinder during use.
4. Position the grinder wheel on the blade area to be sharpened. The moveable joint of the Guide
Arm should be positioned towards you.
5. Align the center of the grinder wheel with the blade area to be sharpened. To do this, adjust
the position of the bushing and lock nut by turning them inwards or outwards until the wheel
of the grinder is centered on the blade.
6. Tighten the lock nut until snug. This will keep the grinder wheel in place during sharpening.
WARNING: Do not overtighten the lock nut. The bushing could get stuck during sharpening if
the lock nut is too tight.
NOTE: Re-adjusting the bushing and lock nut is usually not necessary after the first use if you will be
sharpening blades of similar width.
BLADE SHARP EDGE
GUIDE ARM
Adjust
Center
with
Grinder
Wheel
D. Sharpening a Standard (Straight) Blade
REMINDER: Wear the proper safety equipment such as goggles and ear plugs during sharpening.
NOTE: We recommend using a 36 or 60 grit apper wheel for sharpening. Using a hard disk is not recommended.
1. For sharpening standard blades put the vise handle to the “Low” position.
2. While holding the body of the grinder with your right hand rmly grasp the handle of the grinder
with your left hand.
3. Turn on the power of the grinder.
4. Lightly grind the blade starting at the bottom moving upward in a pushing motion. Make sure to
exert light and consistent pressure as you move upwards.
WARNING: If blue spots occur on the edge of the blade, it is an indication that you are
either moving too slowly or grinding too much material. Adjust to an even lighter pressure
to x this problem.
5. As soon as you reach the upper most cutting part of the blade release the pressure on the blade
and move the grinder back to the bottom position repeat the process.
6. After two or three passes of the grinder, check the sharpness of the blade.
WARNING: Be careful when testing for sharpness using your ngers as this could cause
injury. Turn the grinder off and set aside before checking for sharpness.
7. Repeat these steps until you are satised with the sharpness of the blade.
NOTE: When sharpening a blade for the rst time the blade angle will most likely not be at the
same angle of the “Low” position, which is 30 degrees. In such cases, it may be necessary to make
more grinding passes on the blade until it is of the same angle. It should take less time sharpening
after the rst time.
8. When you have achieved the desired sharpness, turn the power of the grinder off.
9. Set it aside by moving it down and let it hang while still attached to the Guide Arm.
10. Turn the Vise Handle loose to release the blade.
11. Turn the blade to position the blade on the other side for sharpening.
12. Re-attach the blade to the Sharpener Clamp.
13. Repeat the steps for sharpening the blade.
Low Position for
Standard Blades
E. Sharpening Mulching (Dual Angle) Blades
1. A mulching blade has different angled edges on each blade side:
2. When sharpening a mulching blade adjust the position of the vise handle to either “Low” or
“High” position based on the angle.
F. Sharpening a Counter Clockwise (Left Hand) Blade
To sharpen a counter clockwise blade the process is the same except you have to work on the bottom
blade instead of the top blade.
1. Attach the blade to the Sharpener Clamp (See VI-A).
2. Attach the grinder to the Guide Arm (See IV-C).
3. Extend the grinder all the way down to the lower part of the blade.
4. Follow the same steps in centering and grinding for Standard blades.
LOW POSITION HIGH POSITION
UPPER BLADE
LOWER BLADE
OTHER TIPS
A. When starting out with this product, it is highly recommended to use light pressure during grinding.
Light pressure means more grinding passes are required until you get to your desired sharpness but
it also decreases the chances of over grinding.
B. As you become more adept at using the product you can start experimenting and establish a technique
more suitable for you.
C. When sharpening a badly nicked or scarred blade it is best to keep the line straight by aligning the
movement of the grinder with the back side or the left side of the blade rather than aligning with the
sharp edge or right side of the blade.
D. Although it is highly recommended that you position the moveable joint of the Guide Arm towards
you, it is also possible to position it in the opposite direction when in use. Just make sure to test it
first before using it as it may obstruct certain movements.
E. It is highly recommended to balance the blade after sharpening. There are many methods of doing
this. There are establishments that offer the service and there are also do-it-yourself methods which
can be found on the internet.
PRODUCT CARE AND MAINTENANCE
A. Wipe the Blade Pro Sharpener clean with a dry cloth after every use.
B. Regularly apply a light coat of oil or any anti-rust solution on the Guide Arm, Guide Arm Bushing,
and Guide Rod.
C. For any repairs or replacement of parts always consult an authorized agent.
WARRANTY
We warrant this product against any manufacturing defects in material and workmanship for a period
of one (1) year from date of purchase. This warranty is valid only by completion of the warranty card
AND original or photocopy of sales receipt.
This warranty does not cover any defects or damages caused by the following:
• Misuse of the product
• Negligence or lack of maintenance
• Normal wear on parts
• Use of parts not manufactured by the manufacturer
• Modification or removal of parts
NOTE: DO NOT RETURN THIS PRODUCT TO THE STORE WHERE IT WAS PURCHASED.
To make a claim, write to MB Machine LLC at the address below. Customer Service will inform you of
the appropriate procedure to follow. The Warranty Card together with the sales receipt must be presented
when Warranty Services are required.
The purchaser is responsible for all related expenses if product is not covered under warranty.
MB Machine LLC
Address: 1430 Enterprise Ave.
Myrtle Beach, SC 29577
Email: [email protected]
Warranty Service
Contact MB Machine LLC for more information regarding obtaining warranty service. To obtain warranty
service, be ready to provide the following:
• Serial number
• Date and place of purchase
• Original dated sales slip
• Your name and address
• A description of the problem
All repair work will be done by MB Machine LLC or its authorized agents. Any replaced defective
parts will not extend this warranty period. Service under warranty will not extend this warranty period.
Warranty Limitations and Exclusions
There are no warranties, express or implied, which extend beyond the description contained herein
including the implied warranty of merchantability and tness for a particular purpose. MB Machine LLC’s
liability is limited to the cost of repair or replacement of the product. authorized agents will not be liable
for any consequential damages or incidental damages you incur in connection with your purchase and
use of your unit. This limitation is not allowed by some states and so this limitation may not apply to you.
This warranty gives you specic legal right. You may also have other rights that vary by state.
Sales outside the U.S.A.
For MB Machine LLC products sold outside the U.S.A, contact your dealer for warranty information
and service.
To access our youtube how-to videos,
Please use the QR code provided.
https://youtu.be/eeMQnLQXi7k
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