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oil tool before each use. 

4 to 5 drops of a good grade Air Tool Oil 

placed in the air inlet is sufficient. Use proper air pressure and 

CFM rating listed for this tool.

Drain water from hoses and compressor tank.

 Water in the 

air supply line will cause gumming and loss of power. Clean the 

air filter on the supply line and flush the tool with gum solvent or 

a 50/50 mix of air tool oil and kerosene. It may be necessary to 

disassemble the tool to properly clean and re-lubricate.

LUBRICATION & MAINTENANCE

AIR SOURCE

Clean air of correct air pressure is recommended for the power 

supply for this tool. A maximum of 90 PSI at the tool is recom-

mended for most air tools of this class. Check specifications sec-

tion for recommended pressure. (Depending on length of air hose 

and other circumstances, air pressure at compressor may need to 

be increased to 100 PSI to ensure 90 PSI at the tool.)

Water in the air hose and compressor tank contributes to reduced 

performance and damage of the air tool. Drain the air tank and fil-

ters before each use and as necessary to keep the air supply dry.

Hose length over 25’ causes loss in line pressure. Increase hose 

I.D. or increase compressor pressure to compensate for the pres-

sure loss. Use an in-line pressure regulator with gauge if air inlet

pressure is critical.

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No. DESCRIPTION 

QTY

No. DESCRIPTION 

QTY

1. 

Air Inlet Cover  

1

2. 

Air Inlet Screw 

1

3. 

Screw 

8

4. 

Washer 

8

5. 

Body 

1

6. 

Screw 

1

7. 

O-Ring (15 x 2.4)

1

8. 

Valve Spring 

1

9. 

O-Ring (9.6 x 2)

1

10. 

O-Ring (8 x 1.6)

1

11. 

Valve Stem 

1

12. 

Valve Cover 

1

13. 

Trigger Pin 

1

14. 

Trigger 

1

15. 

Gasket 

1

16. 

Ring 

1

17. 

Cylinder Pin 

1

18. 

Bearing 

1

19. 

Back Cover 

1

20. 

Rotor 

1

21. 

Rotor Blade 

4

22. 

Cylinder 

1

23. 

Front Cover 

1

24. 

Bearing 

1

25. 

Bearing 

1

26. 

Gear 

1

27. 

Gear Housing 

1

28. 

Exhaust Deflector 

1

29. 

Screw 

2

30. 

Side Handle 

1

31. 

Dust Cover 

1

32. 

Bearing 

33. 

Woodruf Key 

1

34. 

Arbor 

1

35. 

Retaining Ring 

1

36. 

Wave Washer 

1

37. 

Gear 

1

38. 

Housing Cap 

1

39. 

Bearing 

1

40. 

Bearing Washer 

1

41. 

Circlip 

1

42. 

Sanding Pad 

1

43. 

Lock Nut Wrench 

1

44. 

Wrench 

1

45. 

Lock Nut 

1

PARTS LIST

Summary of Contents for M643

Page 1: ...eye and ear protection when using air powered tools If raising dust debris wear a suitable mask Do not wear loose clothing or jewelry 5 Always operate tool a safe distance from yourself and others in the work area Keep footing and balance at all times 6 Make sure work piece is secure to allow safe operation of the tool with both hands Do not hold the work piece in your hand lap or against any part...

Page 2: ...wheel as indicated in Assembly 2 Grip tool with both hands and place onto the area to sand 3 Squeeze the Trigger 14 You can vary the speed of the tool to suit your needs by varying the amount of pressure applied 4 Move tool in a uniform pattern either up or down or side to side to ensure even grinding 5 Periodically check the tool for any potential wear Replace used grinding wheel when necessary P...

Page 3: ...ssor tank contributes to reduced performance and damage of the air tool Drain the air tank and fil ters before each use and as necessary to keep the air supply dry Hose length over 25 causes loss in line pressure Increase hose I D or increase compressor pressure to compensate for the pres sure loss Use an in line pressure regulator with gauge if air inlet pressure is critical 7 No DESCRIPTION QTY ...

Page 4: ...purpose for which it is not designed or which has been repaired or altered in any way so as to affect adversely its performance 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 liabilit...

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