Use and Care Manual
0908
HTTP://WWW.NUMAXTOOLS.COM 1-888-669-5672 HTTP://WWW.NUMAXTOOLS.COM 1-888-669-5672
MODEL: SFR2890 MODEL: SFR2890
UNLOADING FASTENERS
Unloading is  the reverse of loading, except 
always disconnect the tool from the air source 
before unloading.
Always  unload  all  fasteners  before 
removing the tool from service.
 WARNING:
!
Always disconnect the air source before 
unloading.
 WARNING:
!
CLEARING JAMS
Occasionally, a fastener may become jammed 
in the firing mechanism of the tool, making the 
tool inoperable. To remove a jammed fastener, 
follow these steps below: 
Disconnect the tool from air source.
Remove fasteners from the tool. Failure to 
do so will cause the fasteners to eject from 
the front of the tool.
Pull the jammed fastener out from the nose, 
use pliers or a flat-head screwdriver if 
required to clear the jammed fastener. 
Using caution not to bend or damage the 
drive blade.
Reconnect the tool to the air source.
Reload the tool with fasteners.
Make sure there are no fasteners in the 
magazine before clearing a jam.
 WARNING:
!
NON-MARRING PAD
The non-marring pad attached the nose of the 
tool  helps  prevent  marring  and  denting  when 
working with softer woods.
Disconnect  the  tool  from  the  air  source 
before  removing  or replacing  the  n-no
marring pad or replacing the  n-marring no
pad. Failure to do so could result in serious 
personal injury.
 WARNING:
!
Disconnect  the  tool from  the  air  source 
wh ene ver   cl ear ing   a   ja m.  A fte r 
disconnecting  the  tool  from  the  air 
compressor, there should still be enough 
air pressure to fire the tool. After the air 
hose is disconnected, always fire the tool 
into scrap wood repeatedly to make sure 
all of the compressed air is expended.
 WARNING:
!
SETTING THE AIR PRESSURE
The amount  of  air pressure  required  depends 
on the size of the fasteners and the workpiece 
material. 
Begin testing the depth of drive by driving a test 
nail  into the same type  of workpiece  material 
used for the actual job.
Drive a test fastener with the air pressure set at 
90-95 psi. Raise or lower the air pressure to find 
the lowest setting that will perform the job with 
consistent results.
It may be possible to achieve the desired depth 
with air pressure adjustments alone. 
DEPTH ADJUSTMENT
The  driving  depth  of  the  fasteners  are 
adjustable. To  adjust the depth,  use the  drive 
depth adjustment wheel(D) on the tool.
Disconnect the tool from the air source.
Turn the depth wheel left or right to change 
the driving depth. 
Reconnect the tool to the air source.
Drive a test nail after each adjustment until 
the desired depth is set.
Turn the adjustment knob clockwise
Turn the adjustment knob count clockwise 
Too Deep
Adjustment 
wheel(D)
Flush
Flush
Too Shallow
Adjustment 
wheel(D)
It is advisable to test the depth on a scrap 
workpiece  to  determine  the required 
depth for the application.
To determine depth of drive, first adjust 
the air pressure and drive a test fastener. 
Never exceed 115 psi.
 CAUTION:
FIRING THE TOOL
(USING THE SELECTABLE TRIGGER)
The tool is equipped with  a selectable  trigger 
set  in  the  single  sequential  actuation 
mode(black trigger). The selectable trigger(red 
trigger) can  also  be set  for  contact  actuation 
mode.
This action mode is factory preset.
Connect the tool to the air source.
Grip  the  tool  firmly  to maintain  control. 
Position the nose of the tool onto the work 
surface. 
Squeeze the trigger to drive a fastener.
The  work  contact  element  must  be 
completely depressed by placing the nose 
of the tool against the work piece.
The trigger must be pulled firmly and then 
released.
The  tool  must  be  allowed  to  recoil  away 
from the work piece.
Disconnect the tool from the air source.
Remove the o-ring from the trigger pin (E).
Pull the trigger pin (E) out.
Put the RED trigger on.
Push the trigger pin (E) back, using a small 
hammer if necessary. 
Put the o-ring back to fasten the trigger pin 
(E).
Connect tools to the air source.
Pull and hold the trigger with the tool off the 
work piece.
Press the work contact element against the 
work piece. A nail will be driven.
The  tool  must  be  allowed  to  recoil  away 
from the work piece.
Move the tool along the work piece with a 
bouncing  motion.  Each  time  the  work 
contact element is depressed a nail will be 
driven.
As soon as the desired number of nails has 
been driven, remove the finger from trigger.
CONTACT ACTUATION MODE
Contact actuation allows very fast repetitive 
fastener placement. 
To use  the  tool to drive nails in  this actuation 
mode the work contact element and trigger can 
be actuated in any order.
Single sequential actuation provides the most 
accurate fastener placement.  This  is 
considered to  be  more restrictive  mode of 
operation, suitable for less experienced users.
To use  the  tool to drive nails in  this actuation 
mode, work contact element and trigger must 
be used in a specific order.
SINGLE SEQUENTIAL ACTUATION MODE
(This firing mode is preset by factory)
1.
2.
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5.
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Trigger pin (E)







