Use and Care Manual
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HTTP://WWW.NUMAXTOOLS.COM 1-888-669-5672 HTTP://WWW.NUMAXTOOLS.COM 1-888-669-5672
MODEL: SFR2890 MODEL: SFR2890
During  normal  use  the  tool  will  recoil 
immediately after driving a fastener. This is 
a  normal  function  of  the  tool.  Do  not 
attempt to prevent the recoil by holding the 
tool  against  the  work.  Restriction to  the 
recoil can result in a second fastener being 
driven from the tool. Grip the handle firmly 
and let the tool do the work. Failure to heed 
this warning can result in serious personal 
injury.
MAINTENANCE
 WARNING:
!
Each tool is packed with an anti-dust cap on the 
air connector.
Keep the air connector covered with the anti-
dust cap when the tool is not in use.
Lubricate the tool only with specified 
lubricants.
 CAUTION:
Do  not  at  any  time  let  brake  fluids, 
gasoline,  petroleum-based  products, 
penetration oils, ect., come in  contact 
with  plastic  parts.  Chemicals  can 
damage, weaken or destroy plastic which 
may result in serious personal injury.
 WARNING:
!
Avoid  using  solvents  when  cleaning  plastic 
parts. Most plastics are susceptible to damage 
from various types of commercial solvents and 
may be damaged by their use. Use clean cloths 
to remove dirt, dust, oil, grease, etc.
CLEANING
Do  not  store  tools in a cold  weather 
environment  to  prevent  frost  or  ice 
formation on the tool's operating valves 
and  mechanisms  that  could  cause  tool 
failure.
 CAUTION:
COLD WEATHER OPERATION
For  cold  weather  operation,  near  and  below 
freezing, the moisture in the air line may freeze 
and prevent tool operation. We recommend the 
use of air tool lubricant or permanent antifreeze 
(ethylene glycol) as a cold weather lubricant.
ANTI-DUST CAP
Turn the  tool  so  the air  inlet is  facing  up. 
Place  2  -  3  drops  of  pneumatic  fastening 
tool oil into air inlet. Do not use detergent 
oils,  oil  additives,  or  air-tool  oils  as  these 
lubricants  will  cause  accelerated  wear  to 
the seals and bumpers in the tool, resulting 
in poor tool performance and frequent tool 
maintenance.
After adding oil, connect the tool to the air 
source, run tool briefly. Wipe off any excess 
oil from the cap exhaust.
RECOMMENDED HOOKUP
The  air  compressor  must  be  able  to 
maintain a minimum of 70 psi when the tool 
is being used. An inadequate air supply can 
cause a loss of power and inconsistent 
driving.
An  oiler  can  be  used  to  provide  oil 
circulation through the tool. A filter can be 
used to remove liquid and solid impurities 
which can rust or gum up internal parts of 
the tool.
Always  use  air  supply  hoses  with  a 
minimum working pressure rating equal to 
or greater than the pressure from the power 
source  if  a  regulator  fails, or  150  psi, 
whichever is greater. Use 3/8 in. air hose for 
runs  up  to  50  ft.  and  use  a  3/8  in.  quick 
coupler on the air hose.
Us e   a   pre ss ure   re gu la to r  o n   th e 
compressor, with an operating pressure of 
0-125 psi. A pressure  regulator is required 
to control the operating pressure of the tool 
between 70 and 115 psi.
The  air  compressor  must  be  able  to 
maintain a  minimum of 70 psi when the 
tool  is being  used. An  inadequate  air 
supply  can  cause  a  loss  of  power  and 
inconsistent driving.
 CAUTION:
Do  not  connect with  an  air  compressor 
which can potentially exceed 200 psi. As 
tool may burst, possibly causing injury. 
 WARNING:
!
Quick 
connector
Quick 
Coupler
Air hose
Quick 
connector
Oiler
Regulator
Filter
Compressor
Quick 
Coupler
Note:
This actuation mode is  recommended  when 
less precise nail placement is required. 
Extreme care should be taken because a nails 
will be driver when the work contact element is 
pressed against any surface.
Since  the  tool  can  be  actuated  without 
removing the  finger from the trigger, this is 
considered  to  be  a  less  restrictive  mode, 
suitable for more experienced users.
Disconnect the tool from the air source to 
add  lubricant. the
LUBRICATION
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Frequent,  but  not  excessive,  lubrication  is 
required  for  best  performance.  The  oil  added 
through the air  line  helps  to  prevent  rust  and 
lubricate the internal parts of the nailer.
This  tool  will    firing  after    or  less stop 7  nails
are  left  in the  magazine. Insert  another  strip 
of nails behind the remaining nails to resume 
firing. This helps to prevent wear and extends 
the tool life.
ANTI-DRY-FIRING MECHANISM







