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For technical questions and replacement parts, please call 

1-800-222-5381

.

Thank you very much for choosing a 

, Product! For future reference, please 

complete the owner's record below:
      

Model: _______________     Purchase Date: _______________

Save the receipt, warranty and these instructions. It is important that you read the entire 
manual to become familiar with this product before using it.

This machine is designed for certain applications only. 

strongly 

recommends that this machine is not modified and/or used for any application other than 
that for which it was designed. If you have any questions relative to a particular 
application, DO NOT use the machine until you have first contacted Northern Tool + 
Equipment to determine if it can or should be performed on the product.

Before using this product, please read the following instructions carefully.

SAVE THIS MANUAL

You will need this manual for the safety warnings and precautions, assembly, operating, 
inspection, maintenance and cleaning procedures, parts list and assembly diagram. Keep 
this manual and invoice in a safe and dry place for future reference.

GENERAL SAFETY RULES

Read and understand all instructions.
Failure to follow all instructions listed in the following pages may result in electric shock, 
fire, and/or serious injury.

WORK AREA

1.Keep your work area clean and well lit. 

Cluttered benches and dark areas invite 

accidents.

2.Do not operate pneumatic tools in explosive atmospheres, such as in the 
presence of flammable liquids, gases, or dust.

 Pneumatic tools create sparks which 

may ignite flammables.

3.Keep bystanders, children, pets and onlookers away while operating a pneumatic 
tool

. Distractions can cause you to lose control. Protect others in the work area from 

debris such as metal filings and sparks. Provide barriers or shields as needed.

Wel-Bilt  

The distributor 

TECHNICAL SPECIFICATIONS

PERSONAL SAFETY

1.Stay alert. Watch what you are doing, and use common sense when operating a 
pneumatic tool. Do not use a pneumatic tool while tired or under the influence of drugs, 
alcohol, or medication. A moment of inattention while operating pneumatic tools may 
result in serious personal injury.
2.Dress properly. Do not wear loose clothing or jewelry. Contain long hair. Keep your hair, 
clothing, and gloves away from moving parts. Loose clothes, jewelry, or long hair can be 
caught in moving parts.
3.Avoid accidental starting. 

Be sure the trigger is off before connecting to the air 

supply.

 Carrying pneumatic tools with your finger on the trigger, or connecting pneumatic 

tools to the air supply with the trigger on, invites accidents.

Item

Square Drive

Free Speed

Max. Torque

Air Consumption

Description

1/2in.

7000 RPM

230 ft-lbs

8 CFM

1/4in.- 18NPT

3/8in.

90 PSI

Description

Air Inlet Diameter

Min. Hose Size

Max. air pressure

Item

TM

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INSPECTION, MAINTENANCE AND CLEANING

1.Always make sure the trigger is in its "OFF" position, and disconnect the tool from its 
compressed air supply before performing any inspection, adjustments, maintenance, or 
cleaning.
2.Before each use, inspect the general condition of the tool. Check for loose screws, 
misalignment or binding of moving parts, cracked or broken parts, damaged air hose, and 
any other condition that may affect its safe operation. If abnormal noise or vibration 
occurs, have the problem corrected before further use. Do not use damaged equipment.
3.Daily: With a clean cloth, remove all dirt, oil, and grease from the tool. If necessary, you 
may use a mild detergent. Do not use solvents, as damaged to the tool may occur. Do not 
immerse the tool in any liquids.

GENERAL TOUBLE SHOOTING

TROUBLES

Ø

Tool does not run at a normal speed or at a variable speed

Ø

The motor blocks

Ø

Automatic start when connected to compressed air

Ø

Torque reduces

Ø

Abnormal vibrating  Heat rising at the housing

CAUSES

Ø

Air supply is not enough (air pressure not in a required standard)

Ø

Speed controller/switch breaks down

Ø

Rotor blades break or wear out

Ø

Dust gets into the motor

Ø

Throttle lever or starting trigger malfunctions

Ø

Air leakage at the inlet or somewhere else

Ø

Bearing damages

Ø

Correspondent O-rings wear out or out of position

Ø

Lack of lubricating

TROUBLE SHOOTING

Ø

Check the air hose to see whether it is blocked or twisted for less air supply

Ø

Check the air compressor to gain the correct air pressure required

Ø

Replace rotor blades

Ø

Disassemble the tool and clean the inner structure under proper instructions

Ø

Check and fix the throttle lever or starting trigger for accurate operation

Ø

Check the air leakage and fix it under proper instruction

Ø

Replace new bearing

Ø

Replace the damaged O-ring or put it back in correct position

Ø

Oil/Lubricate the tool consistently until it gains the right speed and torque.

NOTE: For any other problems that cannot be corrected by the operator, please 

contact the distributor from whom you purchased the tool.

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