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S A F E T Y  I N S T R U C T I O N S

5

Surface Prep
Division 

P: 877-817- 6687  F: 813-621-7125  

Visit us at www.ussaws.com 

sales@ussaws.com

4.18 

DO NOT OVERREACH.

Keep proper footing and balance at all times.

4.19 

MAINTAIN MACHINE WITH CARE.

Keep machine clean and follow maintenance procedures for better and 
safer performance. Keep handles dry, clean, and free from oil and grease. 
Follow instructions for lubricating and changing accessories.

4.20 

REMOVE ADJUSTING TOOLS.

Form a habit of checking to see that tools such as adjusting wrenches are 
removed from the machine and properly stored before starting the motor.

4.21 

STAY ALERT.

Watch what you are doing. Use common sense. Do not operate machine 
when you are tired or fatigued.

4.22 

DO NOT USE DRUGS, ALCOHOL, MEDICATION.

Do not operate machine while under the influence of drugs, alcohol, 

or any medication.

4.23 

KEEP THE RIGHT PARTS IN THE RIGHT POSITIONS.

Do not operate machine with parts missing or improperly mounted.

4.24 

CHECK DAMAGED PARTS.

Verify all partsare in good condition and will function properly before us-
ing the machine. Check for alignment of moving parts, binding of moving 
parts, breakage of parts, mounting, and any other conditions that may 
affect machine operation. Do not operate machine if lever or motor on/off 
switch does not function properly.

4.25 

SECURELY MOUNT ACCESSORIES TO THE MACHINE.

Extra care must be taken an elevated location to prevent injury to some-
one on a lower level in the event the tool or accessory should drop. Do 
not operate without fall protection for operator and debris protection for 
public.

4.26 

NEVER TOUCH THE MOVING PARTS.

Never touch moving parts such as blades, belts and others.

4.27 

STOP OPERATION IMMEDIATELY IF ANY ABNORMALITY IS 

DETECTED.

Stop using machine immediately if any abnormalities are observed during 
operation. Examples of abnormalities include unusual noise and vibration.

4.28 

WHEN REPLACING A PART, USE THE SAME TYPE 

AND QUALITY.

When replacing a component part with a new one, use only the same 
type and quality of new part. Never attempt to repair a machine if you are 
unfamiliar with proper procedures and techniques required.

4.29 

LOAD AND UNLOAD SAFELY. 

Use proper heavy lifting procedures. Read & understand manuals before 
loading & unloading.

4.30 

SAVE THESE INSTRUCTIONS.

Refer to this operations and maintenance manual as well as any addition-
al instructions included from other manufacturers and organizations such 
as the Masonry and Concrete Saw Manufacturers Institute®. Never permit 
anyone to operate the machine without proper instructions.

DUST WARNING

Cutting, especially when DRY cutting, generates dust that comes 
from the material being cut, which frequently contains silica. 

Silica is a basic component of sand, quartz, brick clay, granite and 
numerous other minerals and rocks. Exposure to excessive amount of 
such dust can cause:

• Respiratory diseases (affecting your ability to breath), including 

chronic bronchitis, silicosis and pulmonary fibrosis from exposure 

to silica. These diseases may be fatal;
• Skin irritation and rash; and
• Cancer according to NTP* and IARC*
* National Toxicology Program, International Agency for Research 
on Cancer

Take precautionary steps

• Avoid inhalation of and skin contact with dust, mist and fumes;
• Wet cut when feasible, to minimize dust;
• Wear and ensure that all bystanders wear appropriate respiratory 

protection such as dust masks designed to filter out microscopic 

particles. (See OSHA 29 CFR Part 1910.1200) 

California Prop 65 Warning: Use of this product can cause exposure to 
materials known to the State of California to cause cancer and/or birth 
defects or other reproductive harm.

Summary of Contents for MC-45

Page 1: ...tection Copyright 2020 by U S SAWS All rights reserved This work may not be reproduced or disseminated in whole or in part by any means without the prior written permission of U S SAWS Surface Prep Division P 877 817 6687 F 813 621 7125 Visit us at www ussaws com sales ussaws com ...

Page 2: ...nor or moderate injury It may also be used to alert against unsafe practices that may cause property damage 2 The owner s manual is intended to point out some of the basic safety situa tions that maybe encountered during the normal operation maintenance of the U S SAWS MC 45 Machine to instruct you in safety practices for dealing with these conditions Keep all manuals provided with your machine in...

Page 3: ...machine max rpm rating The use of any other blade could result in death or serious injury Surface Prep Division P 877 817 6687 F 813 621 7125 Visit us at www ussaws com sales ussaws com For Safe Operation You must be qualified for safe operation of the U S SAWS MC 45 walk behind machine You must clearly understand the written instructions supplied by U S SAWS be trained including actual operation ...

Page 4: ...ocations is unavoidable use a Ground Fault Circuit Interrupter GFCI protected supply Use of an GFCI reduce the risk of electric shock 4 9 ELECTRICAL SAFETY Power tool plugs must match the outlet Never modify the plug in any way Do not use any adapter plugs with earthed grounded power tools Unmodi fied plugs and matching outlets will reduce risk of electric shock Avoid body contact with earthed or ...

Page 5: ...ALITY IS DETECTED Stop using machine immediately if any abnormalities are observed during operation Examples of abnormalities include unusual noise and vibration 4 28 WHEN REPLACING A PART USE THE SAME TYPE AND QUALITY When replacing a component part with a new one use only the same type and quality of new part Never attempt to repair a machine if you are unfamiliar with proper procedures and tech...

Page 6: ...ealth hazards information WARNING The U S SAWS MC 45 maximum blade operating speed is 5000 rpm Do not use a blade that is not a dry cut diamond blade Using a non dry cut diamond blade or a blade rated below 5000 rpm could result in severe blade failure personal injury or death See Figure 8 and Figure 9 Never cut material for which the blade was not designed Check blade manufacturer s guidelines on...

Page 7: ...t the exact blade depth such as the exact diameter of a worn diamond blade If an accurate depth must be cut install the blade to be used with the motor in the OFF position Place the MC 45 in a secure position that allows the blade to overhang and be visibly measured at full blade depth An example would be blocking the wheels with the mo tor in the OFF position and lowering the MC 45 blade along si...

Page 8: ...igure 8 Warning label wear proper clothing ear and eye protection WARNING Recommended accessories for this tool including blades are listed in this manual or are available by calling customer service The use of any other attachment or accessory might be hazardous 5 11 MC 45 premium dry cut diamond blades U S SAWS recommends soft blond blades for use with the MC 45 Blades can be used in a variety o...

Page 9: ... Visit us at www ussaws com sales ussaws com SETTING THE BLADE DEPTH 6 1 Follow all pre operating instructions in section 5 0 6 2 The machine should be unplugged from electricity before start ing this operation WARNING Never attempt to start the motor with the diamond blade inserted in a joint or previous cut The blade will turn as soon as the MC 45 is started This could damage the blade or cause ...

Page 10: ... will cause excessive heat and may make cutting slower The saw must be guided in an accurate and skillful manner as to keep the saw in the joint fill material and not wander off into the concrete This is especially important when removing polyurea 6 12 Finishing a cut When the operator gets to a wall or other termi nation point with the blade still in the down position shut the saw off and wait fo...

Page 11: ...PARTS BREAKDOWN 11 Surface Prep Division P 877 817 6687 F 813 621 7125 Visit us at www ussaws com sales ussaws com ...

Page 12: ...PARTS BREAKDOWN 12 Surface Prep Division P 877 817 6687 F 813 621 7125 Visit us at www ussaws com sales ussaws com ...

Page 13: ...OPERATIONS BREAKDOWN 13 Surface Prep Division P 877 817 6687 F 813 621 7125 Visit us at www ussaws com sales ussaws com ...

Page 14: ...OPERATIONS BREAKDOWN 14 Surface Prep Division P 877 817 6687 F 813 621 7125 Visit us at www ussaws com sales ussaws com ...

Page 15: ...OPERATIONS BREAKDOWN 15 Surface Prep Division P 877 817 6687 F 813 621 7125 Visit us at www ussaws com sales ussaws com ...

Page 16: ...OPERATIONS BREAKDOWN 16 Surface Prep Division P 877 817 6687 F 813 621 7125 Visit us at www ussaws com sales ussaws com ...

Page 17: ...OPERATIONS BREAKDOWN 17 Surface Prep Division P 877 817 6687 F 813 621 7125 Visit us at www ussaws com sales ussaws com ...

Page 18: ...OPERATIONS BREAKDOWN 18 Surface Prep Division P 877 817 6687 F 813 621 7125 Visit us at www ussaws com sales ussaws com ...

Page 19: ...OPERATIONS BREAKDOWN 19 Surface Prep Division P 877 817 6687 F 813 621 7125 Visit us at www ussaws com sales ussaws com ...

Page 20: ...tion to return merchandise under warranty must first be obtained from U S SAWS 8 1 3 6 U S SAWS reserves the right to inspect and make the final decision on any merchandise returned under warranty 8 1 3 7 U S SAWS offers no warranty with respect to accessories including but not limited to engines motors batteries electrical boards tires and any other parts not manufactured by us but which the orig...

Page 21: ... the warranty registration card do not operate this machine before contacting U S SAWS at 1 877 817 6687 Verify the following before operating the equipment CHANGE OF OWNER OR NEW ADDRESS REGISTRATION CARD IMPORTANT To ensure that your U S SAWS machine is covered under warranty please fill in the following information and mail or fax it to U S SAWS 8004B E Broadway Ave Tampa FL 33619 Fax No 813 62...

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