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1/2 IN. DRIVE TWIN HAMMER 

IMPACT WRENCH

OWNER'S MANUAL

Stock Number M624

Please read these instructions carefully and retain them for future use.

WARNING

It is the owner and/or operators’ responsibility to study all WARNINGS, operating, and maintenance 

instructions contained on the product label and instruction manual prior to operation of this product. 

The owner/operator shall retain product instructions for future reference.
The owner and/or operator are responsible for maintenance, maintaining all decals or warning 

labels and while in use, maintaining the unit in good working order. If the owner and/or operator are 

not fluent in English, the product warnings and instructions shall be read and discussed with the 

operators’ native language by the purchaser/owner or his designee. Make sure that the operator 

comprehends its contents. Safety information shall be emphasized and understood prior to usage. 

The product shall be inspected per the operating instructions.
Users of this product must fully understand these instructions. Each person operating this product 

must also be of sound mind and body and must not be under the influence of any substance that 

might impair their vision, dexterity or judgment.
Protect yourself and others by observing all safety information.
Failure to comply with instructions could result in personal injury and/or property damage! 

If you encounter any problems or difficulties, please contact our customer service department at:

1-800-426-1262 between 6:30 a.m. and 4:30 p.m. Pacific time. 

Summary of Contents for M624

Page 1: ...ings and instructions shall be read and discussed with the operators native language by the purchaser owner or his designee Make sure that the operator comprehends its contents Safety information shall be emphasized and understood prior to usage The product shall be inspected per the operating instructions Users of this product must fully understand these instructions Each person operating this pr...

Page 2: ...nt information which if not followed MAY cause damage to equipment After opening the carton unpack your new product and related parts accessories Please inspect it carefully for any damage that may have occurred during transit Please check it against the photograph on carton If any parts are missing please call customer service at 1 800 426 1262 between 6 a m and 5 p m Pacific time WARNING DO NOT ...

Page 3: ... area or work piece The tool can quickly penetrate material If working directly on the ground make sure you are not directly above shallow cables lines or pipes Keep your limbs and body clear of the tool If an accessory or attachment breaks off the tool tends to surge forward suddenly Operate tool a safe distance from yourself and others in the work area Make sure the immediate area is clear of ot...

Page 4: ...ith gauge if air inlet pressure is critical AIR SOURCE 13 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 d...

Page 5: ...uble depth nuts badly rusted conditions and spring fasteners as they absorb much of the impact power When possible clamp or wedge the bolt to prevent spring back 5 Soak rusted nuts in penetrating oil and break rust seal before removing with impact wrench If nut does not start to move in three to five seconds use a larger size impact wrench Do not use impact wrench beyond rated capacity as this wil...

Page 6: ...1 33 Band 1 34 Screen 1 35 Cover 1 36 End Plate Gasket 1 37 O Ring 45X2 2 38 Reverse Valve 1 39 O Ring 8X1 8 1 40 Back Cover 1 41 Even washer 4 42 Hammer Case Bushing 4 43 Spring 1 44 Steel Ball 1 45 Regulator Knob 1 46 Screw 1 Description Quantity Description Quantity REPLACEMENT PARTS LIST INSUFFICIENT POWER Probable Cause Solution Dirty or clogged air passages Flush and lubricate tool drain air...

Page 7: ...7 REPLACEMENT PARTS LIST ...

Page 8: ...erformance or reliability nor shall these warranties apply to any product or part which has been subject to misuse neglect accident or wear and tear incident to normal use and service PERFORMANCE TOOL does not authorize any other person to make any warranty or to assume any liability in connection with its products Except for warranties of title and the limited express warranties set forth above P...

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