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

2.  Read and understand the warnings posted on the tool and in this manual. Failure to comply with all of 

these warnings may cause serious injury. 

3.  Replace the warning labels if they become obscured or removed. 

4.  This drill is designed and intended for use by properly trained and experienced personnel only. If you 

are not familiar with the proper and safe operation of an air operated drill, do not use until proper 
training and knowledge have been obtained. 

5.  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. 

6.  Always wear approved safety glasses/face shields while using this drill. (Everyday eyeglasses only 

have impact resistant lenses; they are 

not

 safety glasses.) 

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

8.  Use gloves if needed when operating the drill. Keep hands and body away from the working area of 

the tool. 

9.  Some dust created by power sanding, sawing, grinding, drilling and other construction activities 

contains chemicals known to cause cancer, birth defects or other reproductive harm. Some examples 
of these chemicals are: 

 

Lead from lead based paint. 

 

Crystalline silica from bricks, cement and other masonry products. 

 

Arsenic and chromium from chemically treated lumber. 

Your risk of exposure varies, depending on how often you do this type of work. To reduce your 
exposure to these chemicals, work in a well-ventilated area and work with approved safety 
equipment, such as face or dust masks that are specifically designed to filter out microscopic 
particles. 

10.  Do not operate this tool while tired or under the influence of drugs, alcohol or any medication. 

11. Maintain proper balance and keep your footing at all times. Non-slip footwear or anti-skid floor strips 

are recommended. 

12. Before operating this drill, remove tie, rings, watches and other jewelry, and roll sleeves up past the 

elbows. Remove all loose clothing and confine long hair.  

13. Excessive air pressure and too much free rotation may decrease the life of the tool and may cause a 

hazardous situation. 

14. Check air hoses for wear, and keep them away from heat and sharp edges. Do not carry the drill by 

the air hose. 

15.  Do not use this air tool near flammable objects or potentially explosive environments. 

16.  Do not leave a connected tool unattended. When not in use, disconnect tool from the air source. 

17.  Disconnect drill from air supply before making adjustments or changing accessories. 

18.  Keep work area clean and free of clutter.  

19.  Keep visitors a safe distance from the work area. 

Keep children away.

 

20. Give your work undivided attention. Looking around, carrying on a conversation and “horse-play” are 

careless acts that can result in serious injury. 

21. Do not force a tool or attachment to do a job for which it was not designed. The right tool will do the 

job better and safer. 

22. Repetitive motions and/or exposure to constant vibration can be harmful to hands and arms. Take 

breaks and relax your hands occasionally during extended operation of the air drill. 

Summary of Contents for JNS-4041KL

Page 1: ... Maintenance Instructions 1 2 inch Reversible Air Drill Model JNS 4041KL JET 427 New Sanford Road LaVergne Tennessee 37086 Part No M JNS4041KL Ph 800 274 6848 Revision A1 05 2014 www jettools com Copyright 2014 JET ...

Page 2: ... 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 State Law Applies This warranty gives you specific legal rights subject to applicable state law Limitations on This Warranty JET LIMITS ALL IMPLIED WARRANTIES TO THE PERIOD OF THE LIMI...

Page 3: ... do this type of work To reduce your exposure to these chemicals work in a well ventilated area and work with approved safety equipment such as face or dust masks that are specifically designed to filter out microscopic particles 10 Do not operate this tool while tired or under the influence of drugs alcohol or any medication 11 Maintain proper balance and keep your footing at all times Non slip f...

Page 4: ... load RPM 400 Required Air Pressure PSI 90 Average Air Consumption CFM 8 Air Inlet Diameter in 1 4 NPT Air Hose Inside Diameter in 3 8 Vibration Value m s 2 according to EN12096 x 0 7 y 0 7 z 0 5 Overall Length in 8 86 Net Weight lbs 3 86 The above specifications were current at the time this manual was published but because of our policy of continuous improvement JET reserves the right to change ...

Page 5: ...let During continual operation it should be re oiled every 1 to 2 hours This can be done either with an in line oiler or manually If done manually proceed as follows 1 Disconnect the air hose from the drill 2 Place four or five drops of air tool oil into the air inlet Figure 1 NOTE Air tool oil not provided It may be purchased from your JET dealer or is available at most major hardware and tool st...

Page 6: ...ctioning Have throttle valve trigger inspected and repaired at an authorized service center Torque is diminished Air leakage Check connections at the air inlet o rings etc Make adjustments repairs as needed Starts immediately as soon as air is connected without trigger being pressed Throttle valve or trigger are malfunctioning Inspect and repair throttle valve and or trigger Abnormal vibration and...

Page 7: ...7 ...

Page 8: ...8 427 New Sanford Road LaVergne Tennessee 37086 Phone 800 274 6848 www jettools com ...

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