Air supply, Lubrication, Operation – Sunex Tools SX221B User Manual
Page 4: Limited warranty

SX221B
4
Rev. 06/01/04
Operating Instructions • Warning Information • Parts Breakdown
Air Supply...
Tools of this class operate on a wide range of air pressures. 
It is recommended that air pressure of these tools measures 
90 PSI at the tool while running free. Higher pressure (over 
90 psig; 6.2 bar) raises performance beyond the rated 
capacity of the tool, which will shorten tool life because of 
faster wear and could cause injury.
Always use clean, dry air. Dust, corrosive fumes and/or 
water in the air line will cause damage to the tool. Drain the 
air tank daily. Clean the air inlet filter screen on at least a 
weekly schedule. The recommended hookup procedure can 
be viewed in the above figure.
The air inlet used for connecting air supply, has standard 
1/4" NPT . Line pressure should be increased to compensate 
for unusually long air hoses (over 25 feet). Minimum hose 
diameter should be 3/8" I.D. and fittings should have the 
same inside dimensions and be tightly secured.
Lubrication...
Lubricate the air motor daily with quality air tool oil. If no 
air line oiler is used, run a teaspoon of oil through the tool. 
The oil can be squirted into the tool air inlet or into the hose 
at the nearest connection to the air supply, then run the tool. 
The amount of oil to be used is 1 ounce. Overfilling will 
cause a reduction in the power of the tool.
Operation...
Locate center of new hole by using a center punch. Place 
drill bit tip in punch mark. Hold drill square with work and 
start motor. Apply steady, even pressure. Do not force. Too 
much pressure can cause bit to break or overheat. Too little 
pressure will keep bit from cutting and cause it to overheat. 
Reduce pressure just before bit cuts through the work. When 
bit has penetrated work and is spinning freely, take it from 
the work while the motor is running, then turn off drill. If the 
drill jams in the work, release throttle immediately. 
Disconnect the drill before removing bit and determining 
cause of trouble. Do not attempt to free the bit by starting 
and stopping the motor.
Trigger
Forward & 
Reverse Lever
Air Inlet
Limited Warranty...
SUNEX INTERNATIONAL, INC. WARRANTS TO
ITS CUSTOMERS THAT THE COMPANY’S SUNEX
TOOLS® BRANDED PRODUCTS ARE FREE FROM
DEFECTS IN WORKMANSHIP AND MATERIALS. 
Sunex International, Inc. will repair or replace its Sunex 
Tools® branded products which fail to give satisfactory 
service due to defective workmanship or materials, based 
upon the terms and conditions of the following described 
warranty plans attributed to that specific product. This 
product carries a ONE-YEAR warranty. During this warranty 
period, Sunex Tools will repair or replace at our option 
any part or unit which proves to be defective in material or 
workmanship.
Other important warranty information...
This warranty does not cover damage to equipment or tools 
arising from alteration, abuse, misuse, damage and does not 
cover any repairs or replacement made by anyone other than 
Sunex Tools or its authorized warranty service centers.The 
foregoing obligation is Sunex Tools’ sole liability under this or 
any implied warranty and under no circumstances shall we 
be liable for any incidental or consequential damages.
Note: Some states do not allow the exclusion or limitation of 
incidental or consequential damages, so the above limitation 
or exclusion may not apply to you. Return equipment or parts 
to Sunex Tools, or an authorized warranty service center, 
transportation prepaid. Be certain to include your name and 
address, evidence of the purchase date, and description of 
the suspected defect.
If you have any questions about warranty service, please 
write to Sunex Tools. This warranty gives you specific legal 
rights and you may also have other rights which vary from 
state to state. Repair kits and replacement parts are available 
for many of Sunex Tools products regardless of whether or 
not the product is still covered by a warranty plan.
Shipping Address: Sunex Tools • 315 Hawkins Rd. 
Travelers Rest, SC 29690
Mailing Address: Sunex Tools • P.O. Box 4215 
Greenville, SC 29608
SX221B_opMan_060104.indd 4
6/15/04 11:49:56 AM
