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JET   

 

 

 

Safety warnings 

General air tool warnings 

1. 

Read  and  understand  this  entire  manual 
before attempting assembly or operation. 

2. 

Read and understand all warnings posted on 
the tool and in this manual. Failure to comply 
with all of these warnings may cause serious 
injury. 

3. 

Replace  warning  labels  if  they  become 
obscured or removed. 

4. 

Do not use this tool for other than its intended 
use. If used for other purposes, JET disclaims 
any  real  or  implied  warranty  and  holds  itself 
harmless from any injury that may result from 
that use. 

5. 

Always wear approved safety glasses or face 
shield  while  using  this  tool.  (Everyday 
eyeglasses only have impact resistant lenses; 
they are 

not 

safety glasses.) 

6. 

Wear  ear  protectors  (plugs  or  muffs)  if  the 
noise exceeds safe levels. 

7. 

Wear  gloves  and  protective  clothing  if 
operation produces sparks or flying particles. 
Gloves  should  be  tight-fitting,  without  frayed 
fingers  or  hanging  threads.  Keep  hands  and 
body away from the working area of tool. 

8. 

Do  not  operate  an  air  tool  continually  at  full 
throttle without a work load on the tool. 

9. 

The air tool must be properly lubricated before 
operating.  

10.  Never start a percussion type air tool (chipper, 

breaker,  buster,  etc.)  without  securing  the 
tooling  in  the  retainer  and  placing  the  tip 
against the work surface. 

11.  Do  not  operate  air  tool  without  its  guards  in 

place. Do not modify the tool. 

12.  Do  not  operate  this  tool  while  tired  or  under 

the  influence  of  drugs,  alcohol,  or  any 
medication. 

13.  Adopt  a  comfortable  posture  with  proper 

balance,  and  maintain  secure  footing  at  all 
times.  Non-slip  footwear  or  anti-skid  floor 
strips are recommended. 

14.  Do not wear loose clothing or jewelry. Confine 

long hair. 

15.  Excessive  air  pressure  and  too  much  free 

rotation may decrease life of the tool and may 
cause a hazardous situation. 

16.  Check  air  hoses  for  wear,  and  keep  them 

away  from  heat  and  sharp  edges.  Repair  or 
replace  damaged  air  hose  immediately.  Do 
not carry tool by the air hose. 

17.  Air  hose  may  cause  tripping  hazards;  keep 

hose away from traffic areas. 

18.  Do not  use this tool  near flammable  objects, 

or  in  potentially  explosive  environments.  Do 
not use near live electrical wires. 

19.  Do  not  use  power  tools  in  damp  or  wet 

location,  or  expose  them  to  rain.  Keep  work 
area well lighted. 

20.  Do  not  leave  a  connected  tool  unattended. 

When  not  in  use,  disconnect  tool  from  air 
source. 

21.  Shut off air supply and discharge any residual 

pressure  from  tool  before  removing  hose, 
making  adjustments,  changing  accessories, 
or storing tool. 

22.  Make sure tool is switched off, and your finger 

off the trigger, before connecting to air supply. 

23.  Remove adjusting keys and wrenches before 

turning on tool. 

24.  Keep  visitors  a  safe  distance  from  the  work 

area. 

Keep children away.

 

Summary of Contents for JAT-741

Page 1: ...Pneumatic 7in Angle Polisher 505741 JAT 741 Operation Parts Manual M 505741 Edition 3 11 2018 JET 427 New Sanford Road LaVergne TN 37086 Ph 800 274 6848 www jettools com Copyright 2015 JET ...

Page 2: ...h any additional action needed JET has Authorized Service Centers located throughout the United States For the name of an Authorized Service Center in your area call 1 800 274 6846 or use the Service Center Locator on the JET website More Information JET is constantly adding new products For complete up to date product information check with your local distributor or visit the JET website How Stat...

Page 3: ...p against the work surface 11 Do not operate air tool without its guards in place Do not modify the tool 12 Do not operate this tool while tired or under the influence of drugs alcohol or any medication 13 Adopt a comfortable posture with proper balance and maintain secure footing at all times Non slip footwear or anti skid floor strips are recommended 14 Do not wear loose clothing or jewelry Conf...

Page 4: ... Do not modify the tool or use bushings adaptors etc to mount accessories that are not designed for the tool 37 Speed rating of polishing pad must match or exceed free speed rating of sander 38 Use both hands to operate this polisher Use side handle if tool is provided with one 39 Inspect pads and discs for any fractures nicks deformation lack of concentricity or other damage Do not use a damaged ...

Page 5: ...in this document The instructions and warnings in this manual may not encompass all possible workplace environments The operator is expected to take appropriate precautions and exercise common sense As with any tool operation safety of operator and bystanders should be first priority If there are questions or comments please contact your local supplier or JET JET can also be reached at our web sit...

Page 6: ... Overall Length 12 in 304 8 mm Housing material Aluminum with rubber grip Net weight 4 74 lb 2 15 kg Shipping weight 5 41 lb 2 45 kg 1 The specified values are emission levels and are not necessarily to be seen as safe operating levels As workplace conditions vary this information is intended to allow the user to make a better estimation of the hazards and risks involved only Specifications were c...

Page 7: ...the connection to fail Instead add a leader hose and install any quick change couplings farther down the line 8 Grip handle firmly and place other hand on dead handle Push throttle lock to release throttle lever 9 Gently press throttle lever Pressure against throttle lever determines rotation speed of tool 10 For best results keep polisher moving in wide overlapping motions while holding it agains...

Page 8: ...e tool for the job Poor maintenance practices such as using excessive air pressure or air volume Improper or no lubrication Rule of Thumb If it takes more than 8 seconds to tighten or loosen a bolt or nut with an air impact wrench at maximum setting the air wrench is too small or the air compressor CFM is not powerful enough for the job Continued use in either capacity will cause damage to the too...

Page 9: ... the environment Your tool contains materials which can be recovered or recycled When its useful life has expired please leave tool at a specialized facility Figure 2 Recommended arrangement of air piping and air line system ...

Page 10: ...ormal vibration Bearings worn Disassemble and inspect bearing Grease or replace as needed Loss of power erratic action Low air pressure Verify compressor has proper CFM rating for tool Check compressor regulator setting set air pressure to 90 psi Set regulator dial on tool to maximum setting Check for loose connections Moisture or obstruction in air hose Air supply must be clean and dry Clean out ...

Page 11: ...lowing pages To order parts or reach our service department call 1 800 274 6848 Monday through Friday 8 00 a m to 5 00 p m CST Please have the stock number and serial number of your tool available when you call so that we may serve you quickly and accurately ...

Page 12: ...e Polisher 505741 JAT 741 7in Angle Polisher exploded view 32 38 36 19 18 16 14 37 3 9 31 25 24 5 6 7 2 33 23 4 34 8 30 26 10 1 29 11 27 22 20 21 28 12 12 12 12 13 13 13 13 17 23 23 39 43 44 40 41 42 35 45 46 47 48 15 ...

Page 13: ...BB 608ZZ Ball bearing 608ZZ 3 24 JAT741 24 Spindle 5 8 11 1 Index Part No Description Qty 25 JAT741 25 Retaining ring STW 16 1 26 JAT741 26 Wave washer WW 16 1 27 JAT741 27 Pinion gear 1 28 JAT741 28 Bevel gear 1 29 JAT740 29 Spacer 1 30 JAT741 30 Retaining ring RTW 40 1 31 JAT450 34 Key 3x13 1 32 BB 6201Z Ball bearing 6201Z 1 33 JAT740 33 Spindle cap 1 34 JAT741 34 Spring pin 4x25L 1 35 JAT741 35...

Page 14: ...14 JAT 741 Angle Polisher This page intentionally left blank ...

Page 15: ...JET 15 This page intentionally left blank ...

Page 16: ...16 JAT 741 Angle Polisher 427 New Sanford Road LaVergne Tennessee 37086 Phone 800 274 6848 www jettools com ...

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