PLEASE REVIEW ALL WARNING INSTRUCTIONS PRIOR TO OPERATION. SAVE ThIS mANUAL fOR fUTURE REfERENCE.
Rev. 06/20/06
6-767
6
The air regulator knob can be used
as an air throttle, if there are no
other means of regulating air. Turn
the air regulator knob all the way
to highest position for maximum
power.
The air regulator can be used to
adjust torque to the approximate
tightness of a known fastener.
To set the tool to desired torque,
select a nut or screw of known
tightness of the same size, thread
pitch and thread condition as
those on the job. Turn air
regulator to low position, apply
wrench to nut
and gradually
increase power
(turn regulator
to admit more
air) until nut
moves slightly
in the direction
it was originally
set. The tool is
now set to
duplicate that
tightness -
note regulator
setting for future use. When
tightening nuts not requiring
critical torque values, run nut
up flush and then tighten an
additional one-quarter to
one-half turn (slight additional
turning is necessary if gaskets are
being clamped). For additional
power needed on disassembly
work, turn regulator to its fully
open position. This impact wrench
is rated at /2" USS bolt size.
Rating must be down graded for
spring U bolts, tie bolts, long cap
screws, double depth nuts, badly
rusted conditions and spring
fasteners, as they absorb much of
the impact
power. When
possible,
clamp or
wedge the
bolt to
prevent
springback.
Soak rusted
nuts in
penetrating
oil and break
rust seal
before removing with impact
wrench. If nut does not start to
move in three to five seconds, use
a larger size impact wrench. Do
not use impact wrench beyond
rated capacity, as this will
drastically reduce tool life.
The forward/reverse lever is used
to change the rotation of the tool.
When the lever is moved to the
right, the tool is in a forward or
right hand rotation. When the
lever is moved to the left, the
rotation is reverse or left hand.
noTe: actual torque on a fastener
is directly related to joint hardness,
tool speed, condition of socket
and the time the tool is allowed to
impact.
use the simplest possible tool-to-
socket hook up. every connection
absorbs energy and reduces power.
OPERATION
S
pecificationS
Max. Free Speed ...... 7,500 RPM
Max. Torque ........... 550 ft. lbs.
Working Torque ...... 40-350 ft. lbs.
Air Inlet ................... /4" NPT
Min. Hose Size ......... 3/8" I.D.
Avg. Air Cons. ......... 4.7 CFM
Recom.
Air Pressure .............. 90 PSIG (6.2 bar)
Weight ..................... 5.7 lbs.
Length ...................... 7.9"
Sound Level ............. 88 dBA
WARRANTY POLICY:
This NAPA
PROFESSIONAL AIR TOOL, 6-767,
is warranted against defects in
material and workmanship for a
period of one () year from the
date of the original purchase.
We will replace any defective
part or unit which proves to
be defective in material or
workmanship during this one
year period. In the unlikely event
a replacement unit is required
during this one year period,
return the unit to your local
NAPA Auto Parts Store for the
free replacement. This warranty
does not cover damage to tools
rising from alteration, abuse,
misuse and does not cover any
repairs made by anyone other
than an authorized NAPA
PROFESSIONAL AIR TOOL
Service Center.
If service is required after the
one year limited warranty, return
tools to any authorized NAPA
PROFESSIONAL AIR TOOL Service
Center, transportation prepaid.
Be sure to include your name,
address and phone number with
each tool.
Forward/
Reversing
Lever
Air Inlet
