Question about Air Nailers
It is a finish gun sfn2
I have worked on many senco finish nailers including the sfn2 and have found them to be very reliable except when the wrong type of oil or too much is introduced into the gun. Some oils can swell the orings and cause the problem that you are having. No worries however, orings are available at www.toolpartsdirect.com as well as parts list. An oring kit costs less per oring. You must remove the head to access trigger parts. Part # LB5005 (firing valve) is the part that fails the most on your gun but failure of this part leaks air out of top. You should keep a spare firing valve just in case. Enjoy
Posted on Dec 09, 2008
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