Harbor Freight Tools Trimmer 90757 User Manual

8” MINI SHEAR BRAKE  
90757  
ASSEMBLY AND OPERATING INSTRUCTIONS  
3491 Mission Oaks Blvd., Camarillo, CA 93011  
Copyright © 2003 by Harbor Freight Tools®. All rights reserved. No portion of  
this manual or any artwork contained herein may be reproduced in any shape  
or form without the express written consent of Harbor Freight Tools.  
For technical questions and replacement parts, please call 1-800-444-3353  
 
8.  
9.  
Do not overreach. Keep proper footing and balance at all times. Do not reach over  
or across running machines.  
Maintain tools with care. Keep tools sharp and clean for better and safer  
performance. Follow instructions for lubricating and changing accessories. Inspect  
tool cords periodically and, if damaged, have them repaired by an authorized  
technician. The handle must be kept clean, dry, and free from oil and grease at all  
times.  
10. Remove adjusting keys and wrenches. Check that keys and adjusting wrenches  
are removed from the tool or machine work surface before operating.  
11. Stay alert. Watch what you are doing, use common sense. Do not operate any tool  
when you are tired.  
12. Check for damaged parts. Before using any tool, any part that appears damaged  
should be carefully checked to determine that it will operate properly and perform its  
intended function. Check for alignment and binding of moving parts; any broken parts  
or mounting fixtures; and any other condition that may affect proper operation. Any  
part that is damaged should be properly repaired or replaced by a qualified  
technician.  
13. Guard against electric shock. Prevent body contact with grounded surfaces such  
as pipes, radiators, ranges, and refrigerator enclosures.  
14. Replacement parts and accessories. When servicing, use only identical  
replacement parts. Use of any other parts will void the warranty. Only use accessories  
intended for use with this tool. Approved accessories are available from Harbor  
Freight Tools.  
15. Do not operate tool if under the influence of alcohol or drugs. Read warning  
labels if taking prescription medicine to determine if your judgment or reflexes are  
impaired while taking drugs. If there is any doubt, do not operate the tool.  
16. Maintenance. For your safety, service and maintenance should be performed  
regularly by a qualified technician.  
17. Workpiece may be sharp. After bending or cutting workpieces use caution. Be aware  
of sharp edges or sharp shreds of metal that may be created. Use heavy duty gloves when  
handling the workpiece.  
Warning:The warnings, cautions, and instructions discussed in this instruction manual  
cannot cover all possible conditions and situations that may occur. It must be under-  
stood by the operator that common sense and caution are factors which cannot be  
built into this product, but must be supplied by the operator.  
Unpacking  
When unpacking, check to make sure the parts listed on page 6 are included. If any parts  
are missing or broken, please call Harbor Freight Tools at the number on the cover of this  
manual as soon as possible.  
SKU 90757  
Page 3  
 
Assembly and Operation  
FIGURE 1  
Handle (31)  
Mounting Hole  
Handle Bolt (29)  
Rear side of  
Lower Bending Die (2)  
Driving Gear (30)  
Mounting Hole  
1. Mount the Shear Brake by driving the 4 mounting bolts (not included) through the 11/16”  
mounting holes, into your workbench. Secure each bolt in place with included washer and  
nut. Make sure the workbench is level and solid enough to support the Brake Shear, the  
workpieces, and the pulling force associated with operation of the tool.  
See FIGURE 1.  
2. Insert the Handle (31) into the Driving Gear (30) and secure it with the Handle Bolt (29).  
See FIGURE 1.  
Inserting the Lower Bending Die (2)  
Note: The Lower Bending Die (2) is reversible and can be inserted using either the top or  
bottom, depending on the thickness of the metal you are working with.  
1. To insert the Lower Bending Die 2, slide the smaller end first, into the bottom of the ma-  
chine as shown in FIGURE 2. The rear side of the Lower Bending Die (2) is shown on the  
back side of the Shear Brake in FIGURE 1. Make sure the Lower Bending Die (2) lines up  
with the upper Dies (3, 37-41). FIGURE 3 shows the front side of the unit with the Lower  
Bending Die (2) installed.  
FIGURE 2  
FIGURE 3  
Cutting  
Slot  
Bolt (5)  
Jaw Opening  
Front Side of  
Lower Bending Die (2)  
Lower Bending Die (2)  
REV 03/04  
SKU 90757  
Page 4  
 
Assembly and Operation (continued)  
Inserting the upper Dies (37-41)  
1. Loosen the Bolts (5) and insert the desired size Die (3, 37-41), or combination of dies, and  
then tighten the Bolts (5). See FIGURE 3. Make sure the upper Dies (3, 37-41) you insert are  
lined up with the Lower Die (2).  
Cutting Metal  
1. Insert the metal workpiece into the cutting slot (See FIGURE 3). Make sure that your  
hands are clear, and move the Handle (31) away from you to cut. When finished cutting  
return the Handle (31).  
Bending Metal  
Note: We recommend you practice on a scrap piece of metal.  
Warning! Always check to see that the Dies (3, 37-41) and the Lower Bending Die (2) are  
securely attached.  
Warning! Do not exceed the Shear Brake’s listed capacities (see the Specifications table on  
page 2).  
1. After installing the appropriate Die (3, 37-41), insert the the workpiece into the jaw opening.  
See FIGURE 3.  
Warning! Keep your fingers and hands clear of the jaw opening when bending metal or  
removing workpieces.  
2. Work the Handle (31) toward you until the workpiece is bent to the desired angle.  
3. Lift the Handle (31) and remove the workpiece.  
Maintenance  
1. Clean out the Shear Brake after each use. Make sure any metal filings, dirt, grease, or  
debris are removed from the unit.  
2. Use a light machine oil to lubricate the moving parts on a regular basis to maintain smooth  
movement.  
3. Periodically check the Shear Brake for signs of wear including cracks, bends, or signs of  
stress or breakage. Do not use the Shear Brake if faults are discovered. Take the Shear  
Brake to an authorized service technician if repairs are required.  
SKU 90757  
Page 5  
 
Parts List  
Part No.  
1
2
3
4
5
6
7
8
Description  
Base  
Lower Bending Die  
8” Die  
Qty.  
1
1
1
1
4
1
2
1
1
1
4
2
3
1
1
1
2
1
2
1
2
Part No.  
Description  
Gear Shaft  
Transfering Gear  
Bushing  
Driven Gear  
Screw M4x5  
Gear Shaft  
Cover  
Handle Bolt  
Driving Gear  
Handle  
Nut  
Bolt  
Hex Wrench 5mm  
Hex Wrench 4mm  
Hex Wrench 3mm  
1-19/32” Die  
1” Die  
25/32” Die  
13/32” Die  
23/64” Die  
T-Block  
Qty.  
1
1
1
1
4
1
1
1
1
1
4
4
1
1
1
1
1
1
1
1
1
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
37  
38  
39  
40  
41  
42  
Clamping Bar  
Bolt M5x12  
Lower Blade Body  
Bolt M5x15  
Lower Blade Support Bar  
Lower Blade  
Upper Blade  
Hex Head Bolt  
Bolt M4x15  
Adjustment Bolt M4x25  
Upper Blade Holder  
Bolt  
Guide  
Screw M4x12  
0-ring  
Pin  
Shaft  
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
Bushing  
PLEASE READTHE FOLLOWING CAREFULLY  
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDEDTHE PARTS DIAGRAM INTHIS  
MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER NOR DISTRIBU-  
TOR MAKES ANY REPRESENTATION OR WARRANTY OF ANY KINDTOTHE BUYERTHAT HE  
OR SHE IS QUALIFIED TO MAKE ANY REPAIRS TO THE PRODUCT OR THAT HE OR SHE IS  
QUALIFIED TO REPLACE ANY PARTS OF THE PRODUCT. IN FACT, THE MANUFACTURER  
AND/OR DISTRIBUTOR EXPRESSLY STATESTHAT ALL REPAIRS AND PARTS REPLACEMENTS  
SHOULD BE UNDERTAKEN BY CERTIFIED AND LICENSED TECHNICIANS AND NOT BY THE  
BUYER. THE BUYER ASSUMES ALL RISK AND LIABILITY ARISING OUT OF HIS OR HER  
REPAIRS TO THE ORIGINAL PRODUCT OR REPLACEMENT PARTS THERETO, OR ARISING  
OUT OF HIS OR HER INSTALLATION OF REPLACEMENT PARTS THERETO.  
NOTE: Some parts are listed and shown for illustration purposes only and are not available  
individually as replacement parts.  
REV 03/04; REV 12/06  
SKU 90757  
Page 6  
 
Assembly Drawing  
SKU 90757  
REV 03/04  
Page 7  
 
WARRANTY  
LIMITED 90 DAY WARRANTY  
Harbor FreightTools Co.makes every effort to assure that its products meet high quality and durability standards,  
and warrants to the original purchaser that this product is free from defects in materials and workmanship for  
the period of ninety days from the date of purchase. This warranty does not apply to damage due directly or  
indirectly, to misuse, abuse, negligence or accidents, repairs or alterations outside our facilities, or to lack of  
maintenance.We shall in no event be liable for death, injuries to persons or property, or for incidental, contingent,  
special or consequential damages arising from the use of our product. Some states do not allow the exclusion or  
limitation of incidental or consequential damages, so the above limitation of exclusion may not apply to you. THIS  
WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING  
THE WARRANTIES OF MERCHANTABILITY AND FITNESS.  
To take advantage of this warranty, the product or part must be returned to us with transportation charges prepaid.  
Proof of purchase date and an explanation of the complaint must accompany the merchandise. If our inspection  
verifies the defect, we will either repair or replace the product at our election or we may elect to refund the purchase  
price if we cannot readily and quickly provide you with a replacement. We will return repaired products at our  
expense, but if we determine there is no defect, or that the defect resulted from causes not within the scope of  
our warranty, then you must bear the cost of returning the product.  
This warranty gives you specific legal rights and you may also have other rights which vary from state to state.  
3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • (800) 444-3353  
REV 12/06  
SKU 90757  
Page 8  
 

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